---

注：
文章信息来源：b站黑马程序员相关的教学视频
资料链接：b站黑马程序员有资料的获取方式，大家自行get

---

自媒体文章发布

1)自媒体前后端搭建

1.1)后台搭建

①：资料中找到heima-leadnews-wemedia.zip解压

拷贝到heima-leadnews-service工程下，并指定子模块

在heima-leadnews-service工程的pom文件中添加heima-leadnews-wemedia模块

创建leadnews_wemedia数据集，然后执行leadnews-wemedia.sql脚本：

添加对应的nacos配置

spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/leadnews_wemedia?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
    username: root
    password: root
# 设置Mapper接口所对应的XML文件位置，如果你在Mapper接口中有自定义方法，需要进行该配置
mybatis-plus:
  mapper-locations: classpath*:mapper/*.xml
  # 设置别名包扫描路径，通过该属性可以给包中的类注册别名
  type-aliases-package: com.heima.model.media.pojos

②：资料中找到heima-leadnews-wemedia-gateway.zip解压

拷贝到heima-leadnews-gateway工程下，并指定子模块

在heima-leadnews-gateway工程的pom文件中添加heima-leadnews-wemedia-gateway模块

添加对应的nacos配置

spring:
  cloud:
    gateway:
      globalcors:
        cors-configurations:
          '[/**]': # 匹配所有请求
            allowedOrigins: "*" #跨域处理 允许所有的域
            allowedMethods: # 支持的方法
              - GET
              - POST
              - PUT
              - DELETE
      routes:
        # 平台管理
        - id: wemedia
          uri: lb://leadnews-wemedia
          predicates:
            - Path=/wemedia/**
          filters:
            - StripPrefix= 1

③：在资料中找到类文件夹

拷贝wemedia文件夹到heima-leadnews-model模块下的com.heima.model

启动WemediaApplication和WemediaGatewayAplication，可以成功运行了

1.2)前台搭建

通过nginx的虚拟主机功能，使用同一个nginx访问多个项目

搭建步骤：

①：资料中找到wemedia-web.zip解压

②：在nginx中leadnews.conf目录中新增heima-leadnews-wemedia.conf文件

• 网关地址修改（localhost:51602）

• 前端项目目录修改（wemedia-web解压的目录）

• 访问端口修改(8802)

upstream  heima-wemedia-gateway{
    server localhost:51602;
}

server {
	listen 8802;
	location / {
		root D:/java_doc/02-projects/wemedia-web/;
		index index.html;
	}
	
	location ~/wemedia/MEDIA/(.*) {
		proxy_pass http://heima-wemedia-gateway/$1;
		proxy_set_header HOST $host;  # 不改变源请求头的值
		proxy_pass_request_body on;  #开启获取请求体
		proxy_pass_request_headers on;  #开启获取请求头
		proxy_set_header X-Real-IP $remote_addr;   # 记录真实发出请求的客户端IP
		proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;  #记录代理信息
	}
}

③：启动nginx，启动自媒体微服务和对应网关（WemediaApplication和WemediaGatewayAplication）

④：联调测试登录功能 http://localhost:8802

2)自媒体素材管理

2.1)素材上传

2.2.1)需求分析

图片上传的页面，首先是展示素材信息，可以点击图片上传，弹窗后可以上传图片

2.2.2)素材管理-图片上传-表结构

媒体图文素材信息表wm_material

对应实体类：

package com.heima.model.wemedia.pojos;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;

import java.io.Serializable;
import java.util.Date;

/**
 * <p>
 * 自媒体图文素材信息表
 * </p>
 *
 * @author itheima
 */
@Data
@TableName("wm_material")
public class WmMaterial implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * 主键
     */
    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;

    /**
     * 自媒体用户ID
     */
    @TableField("user_id")
    private Integer userId;

    /**
     * 图片地址
     */
    @TableField("url")
    private String url;

    /**
     * 素材类型
            0 图片
            1 视频
     */
    @TableField("type")
    private Short type;

    /**
     * 是否收藏
     */
    @TableField("is_collection")
    private Short isCollection;

    /**
     * 创建时间
     */
    @TableField("created_time")
    private Date createdTime;

}

2.2.3)实现思路

①：前端发送上传图片请求，类型为MultipartFile

②：网关进行token解析后，把解析后的用户信息存储到header中

//获得token解析后中的用户信息
Object userId = claimsBody.get("id");
//在header中添加新的信息
ServerHttpRequest serverHttpRequest = request.mutate().headers(httpHeaders -> {
    httpHeaders.add("userId", userId + "");
}).build();
//重置header
exchange.mutate().request(serverHttpRequest).build();

完整代码如下：

package com.heima.wemedia.gateway.filter;


import com.heima.wemedia.gateway.util.AppJwtUtil;
import io.jsonwebtoken.Claims;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
import org.springframework.http.HttpStatus;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

@Component
@Slf4j
public class AuthorizeFilter implements Ordered, GlobalFilter {
    @Override
    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
        //1.获取request和response对象
        ServerHttpRequest request = exchange.getRequest();
        ServerHttpResponse response = exchange.getResponse();

        //2.判断是否是登录
        if(request.getURI().getPath().contains("/login")){
            //放行
            return chain.filter(exchange);
        }

        //3.获取token
        String token = request.getHeaders().getFirst("token");

        //4.判断token是否存在
        if(StringUtils.isBlank(token)){
            response.setStatusCode(HttpStatus.UNAUTHORIZED);
            return response.setComplete();
        }


        //5.判断token是否有效
        try {
            Claims claimsBody = AppJwtUtil.getClaimsBody(token);
            //是否是过期
            int result = AppJwtUtil.verifyToken(claimsBody);
            if(result == 1 || result  == 2){
                response.setStatusCode(HttpStatus.UNAUTHORIZED);
                return response.setComplete();
            }
            //获得token解析后中的用户信息
            Object userId = claimsBody.get("id");
            //在header中添加新的信息
            ServerHttpRequest serverHttpRequest = request.mutate().headers(httpHeaders -> {
                httpHeaders.add("userId", userId + "");
            }).build();
            //重置header
            exchange.mutate().request(serverHttpRequest).build();

        } catch (Exception e) {
            e.printStackTrace();
        }

        //6.放行
        return chain.filter(exchange);
    }

    /**
     * 优先级设置  值越小  优先级越高
     * @return
     */
    @Override
    public int getOrder() {
        return 0;
    }
}

③：自媒体微服务使用拦截器获取到header中的的用户信息，并放入到threadlocal中

在heima-leadnews-utils中新增工具类

注意：需要从资料中找出WmUser实体类拷贝到model工程下

package com.heima.utils.thread;

import com.heima.model.wemedia.pojos.WmUser;

public class WmThreadLocalUtils {

    private final static ThreadLocal<WmUser> WM_USER_THREAD_LOCAL = new ThreadLocal<>();

    /**
     * 添加用户(存入线程)
     * @param wmUser
     */
    public static void  setUser(WmUser wmUser){
        WM_USER_THREAD_LOCAL.set(wmUser);
    }

    /**
     * 获取用户（从线程中获取）
     */
    public static WmUser getUser(){
        return WM_USER_THREAD_LOCAL.get();
    }

    /**
     * 清理用户
     */
    public static void clear(){
        WM_USER_THREAD_LOCAL.remove();
    }
}

在heima-leadnews-wemedia中新增拦截器

package com.heima.wemedia.interceptor;

import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.thread.WmThreadLocalUtils;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Optional;

@Slf4j
public class WmTokenInterceptor implements HandlerInterceptor {
	/**
     * 得到header中的用户信息，并且存入到当前线程中
     * @param request
     * @param response
     * @param handler
     * @return
     * @throws Exception
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //得到header中的信息
        String userId = request.getHeader("userId");
        Optional<String> optional = Optional.ofNullable(userId);
        if(optional.isPresent()){
            //把用户id存入threadloacl中
            WmUser wmUser = new WmUser();
            wmUser.setId(Integer.valueOf(userId));
            WmThreadLocalUtils.setUser(wmUser);
            log.info("wmTokenFilter设置用户信息到threadlocal中...");
        }

        return true;
    }
    
	/**
     * 清理线程中的数据
     * @param request
     * @param response
     * @param handler
     * @param modelAndView
     * @throws Exception
     */
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        log.info("清理threadlocal...");
        WmThreadLocalUtils.clear();
    }
}

配置使拦截器生效，拦截所有的请求

package com.heima.wemedia.config;

import com.heima.wemedia.interceptor.WmTokenInterceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new WmTokenInterceptor()).addPathPatterns("/**");
    }
}

④：先把图片上传到minIO中，获取到图片请求的路径——（2.2.5查看具体功能实现）

⑤：把用户id和图片上的路径保存到素材表中——（2.2.5查看具体功能实现）

2.2.4)接口定义

	说明
接口路径	/api/v1/material/upload_picture
请求方式	POST
参数	MultipartFile
响应结果	ResponseResult

MultipartFile ：Springmvc指定的文件接收类型

ResponseResult ：

成功需要回显图片，返回素材对象

{
  "host":null,
  "code":200,
  "errorMessage":"操作成功",
  "data":{
    "id":52,
    "userId":1102,
    "url":"http://192.168.200.130:9000/leadnews/2021/04/26/a73f5b60c0d84c32bfe175055aaaac40.jpg",
    "type":0,
    "isCollection":0,
    "createdTime":"2021-01-20T16:49:48.443+0000"
  }
}

失败：

• 参数失效
• 文章上传失败

2.2.5)自媒体微服务集成heima-file-starter

①：导入heima-file-starter

<dependencies>
    <dependency>
        <groupId>com.heima</groupId>
        <artifactId>heima-file-starter</artifactId>
        <version>1.0-SNAPSHOT</version>
    </dependency>
</dependencies>

②：在自媒体微服务的配置中心nacos添加以下配置：

minio:
  accessKey: minio
  secretKey: minio123
  bucket: leadnews
  endpoint: http://192.168.200.130:9000
  readPath: http://192.168.200.130:9000

2.2.6)具体实现

①：创建WmMaterialController

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/api/v1/material")
public class WmMaterialController {


    @PostMapping("/upload_picture")
    public ResponseResult uploadPicture(MultipartFile multipartFile){
        return null;
    }

}

②：mapper

package com.heima.wemedia.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.heima.model.wemedia.pojos.WmMaterial;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface WmMaterialMapper extends BaseMapper<WmMaterial> {
}

③：业务层：

package com.heima.wemedia.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.pojos.WmMaterial;
import org.springframework.web.multipart.MultipartFile;

public interface WmMaterialService extends IService<WmMaterial> {

    /**
     * 图片上传
     * @param multipartFile
     * @return
     */
    public ResponseResult uploadPicture(MultipartFile multipartFile);



}

业务层实现类：

package com.heima.wemedia.service.impl;


import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.file.service.FileStorageService;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.pojos.WmMaterial;
import com.heima.utils.thread.WmThreadLocalUtils;
import com.heima.wemedia.mapper.WmMaterialMapper;
import com.heima.wemedia.service.WmMaterialService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.Date;
import java.util.UUID;

@Slf4j
@Service
@Transactional
public class WmMaterialServiceImpl extends ServiceImpl<WmMaterialMapper, WmMaterial> implements WmMaterialService {

    @Autowired
    private FileStorageService fileStorageService;


    /**
     * 图片上传
     * @param multipartFile
     * @return
     */
    @Override
    public ResponseResult uploadPicture(MultipartFile multipartFile) {

        //1.检查参数
        if(multipartFile == null || multipartFile.getSize() == 0){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //2.上传图片到minIO中
        String fileName = UUID.randomUUID().toString().replace("-", "");
        //aa.jpg
        String originalFilename = multipartFile.getOriginalFilename();
        String postfix = originalFilename.substring(originalFilename.lastIndexOf("."));
        String fileId = null;
        try {
            fileId = fileStorageService.uploadImgFile("", fileName + postfix, multipartFile.getInputStream());
            log.info("上传图片到MinIO中，fileId:{}",fileId);
        } catch (IOException e) {
            e.printStackTrace();
            log.error("WmMaterialServiceImpl-上传文件失败");
        }

        //3.保存到数据库中
        WmMaterial wmMaterial = new WmMaterial();
        wmMaterial.setUserId(WmThreadLocalUtils.getUser().getId());
        wmMaterial.setUrl(fileId);
        wmMaterial.setIsCollection((short)0);
        wmMaterial.setType((short)0);
        wmMaterial.setCreatedTime(new Date());
        save(wmMaterial);

        //4.返回结果

        return ResponseResult.okResult(wmMaterial);
    }

}

④：控制器

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.wemedia.service.WmMaterialService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/api/v1/material")
public class WmMaterialController {

    @Autowired
    private WmMaterialService wmMaterialService;


    @PostMapping("/upload_picture")
    public ResponseResult uploadPicture(MultipartFile multipartFile){
        return wmMaterialService.uploadPicture(multipartFile);
    }

}

⑤：测试http://localhost:8802/#/login

启动自媒体网关WemediaGatewayAplication和自媒体微服务WemediaApplication，使用前端项目进行测试

回到数据库中，刷新列表

2.2)素材列表查询

2.2.1)接口定义

	说明
接口路径	/api/v1/material/list
请求方式	POST
参数	WmMaterialDto
响应结果	ResponseResult

WmMaterialDto ：

@Data
package com.heima.model.wemedia.dtos;

import com.heima.model.common.dtos.PageRequestDto;
import lombok.Data;

@Data
public class WmMaterialDto extends PageRequestDto {

    /**
     * 1 收藏
     * 0 未收藏
     */
    private Short isCollection;
}

ResponseResult （和代码无关）:

{
  "host":null,
  "code":200,
  "errorMessage":"操作成功",
  "data":[
    {
    "id":52,
      "userId":1102,
      "url":"http://192.168.200.130:9000/leadnews/2021/04/26/ec893175f18c4261af14df14b83cb25f.jpg",
      "type":0,
      "isCollection":0,
      "createdTime":"2021-01-20T16:49:48.000+0000"
    },
    ....
  ],
  "currentPage":1,
  "size":20,
  "total":0
}

2.2.2)功能实现

①：在WmMaterialController类中新增方法

@PostMapping("/list")
public ResponseResult findList(@RequestBody WmMaterialDto dto){
    return null;
}

完整代码如下：

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.dtos.WmMaterialDto;
import com.heima.wemedia.service.WmMaterialService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/api/v1/material")
public class WmMaterialController {

    @Autowired
    private WmMaterialService wmMaterialService;


    @PostMapping("/upload_picture")
    public ResponseResult uploadPicture(MultipartFile multipartFile){
        return wmMaterialService.uploadPicture(multipartFile);
    }

    @PostMapping("/list")
    public ResponseResult findList(@RequestBody WmMaterialDto dto){
        return null;
    }

}

②：mapper已定义

③：业务层

在WmMaterialService中新增方法

/**
     * 素材列表查询
     * @param dto
     * @return
     */
public ResponseResult findList( WmMaterialDto dto);

完整代码如下：

package com.heima.wemedia.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.dtos.WmMaterialDto;
import com.heima.model.wemedia.pojos.WmMaterial;
import org.springframework.web.multipart.MultipartFile;

public interface WmMaterialService extends IService<WmMaterial> {

    /**
     * 图片上传
     * @param multipartFile
     * @return
     */
    public ResponseResult uploadPicture(MultipartFile multipartFile);

    /**
     * 素材列表查询
     * @param dto
     * @return
     */
    public ResponseResult findList( WmMaterialDto dto);

}

实现方法：

/**
     * 素材列表查询
     * @param dto
     * @return
     */
@Override
public ResponseResult findList(WmMaterialDto dto) {

    //1.检查参数
    dto.checkParam();

    //2.分页查询
    IPage page = new Page(dto.getPage(),dto.getSize());
    LambdaQueryWrapper<WmMaterial> lambdaQueryWrapper = new LambdaQueryWrapper<>();
    //是否收藏
    if(dto.getIsCollection() != null && dto.getIsCollection() == 1){
        lambdaQueryWrapper.eq(WmMaterial::getIsCollection,dto.getIsCollection());
    }

    //按照用户查询
    lambdaQueryWrapper.eq(WmMaterial::getUserId,WmThreadLocalUtils.getUser().getId());

    //按照时间倒序
    lambdaQueryWrapper.orderByDesc(WmMaterial::getCreatedTime);


    page = page(page,lambdaQueryWrapper);

    //3.结果返回
    ResponseResult responseResult = new PageResponseResult(dto.getPage(),dto.getSize(),(int)page.getTotal());
    responseResult.setData(page.getRecords());
    return responseResult;
}

完整代码如下：

package com.heima.wemedia.service.impl;


import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.file.service.FileStorageService;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.dtos.WmMaterialDto;
import com.heima.model.wemedia.pojos.WmMaterial;
import com.heima.utils.thread.WmThreadLocalUtils;
import com.heima.wemedia.mapper.WmMaterialMapper;
import com.heima.wemedia.service.WmMaterialService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.Date;
import java.util.UUID;

@Slf4j
@Service
@Transactional
public class WmMaterialServiceImpl extends ServiceImpl<WmMaterialMapper, WmMaterial> implements WmMaterialService {

    @Autowired
    private FileStorageService fileStorageService;


    /**
     * 图片上传
     * @param multipartFile
     * @return
     */
    @Override
    public ResponseResult uploadPicture(MultipartFile multipartFile) {

        //1.检查参数
        if(multipartFile == null || multipartFile.getSize() == 0){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        //2.上传图片到minIO中
        String fileName = UUID.randomUUID().toString().replace("-", "");
        //aa.jpg
        String originalFilename = multipartFile.getOriginalFilename();
        String postfix = originalFilename.substring(originalFilename.lastIndexOf("."));
        String fileId = null;
        try {
            fileId = fileStorageService.uploadImgFile("", fileName + postfix, multipartFile.getInputStream());
            log.info("上传图片到MinIO中，fileId:{}",fileId);
        } catch (IOException e) {
            e.printStackTrace();
            log.error("WmMaterialServiceImpl-上传文件失败");
        }

        //3.保存到数据库中
        WmMaterial wmMaterial = new WmMaterial();
        wmMaterial.setUserId(WmThreadLocalUtils.getUser().getId());
        wmMaterial.setUrl(fileId);
        wmMaterial.setIsCollection((short)0);
        wmMaterial.setType((short)0);
        wmMaterial.setCreatedTime(new Date());
        save(wmMaterial);

        //4.返回结果

        return ResponseResult.okResult(wmMaterial);
    }
    /**
     * 素材列表查询
     * @param dto
     * @return
     */
    @Override
    public ResponseResult findList(WmMaterialDto dto) {

        //1.检查参数
        dto.checkParam();

        //2.分页查询
        IPage page = new Page(dto.getPage(),dto.getSize());
        LambdaQueryWrapper<WmMaterial> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        //是否收藏
        if(dto.getIsCollection() != null && dto.getIsCollection() == 1){
            lambdaQueryWrapper.eq(WmMaterial::getIsCollection,dto.getIsCollection());
        }

        //按照用户查询
        lambdaQueryWrapper.eq(WmMaterial::getUserId,WmThreadLocalUtils.getUser().getId());

        //按照时间倒序
        lambdaQueryWrapper.orderByDesc(WmMaterial::getCreatedTime);


        page = page(page,lambdaQueryWrapper);

        //3.结果返回
        ResponseResult responseResult = new PageResponseResult(dto.getPage(),dto.getSize(),(int)page.getTotal());
        responseResult.setData(page.getRecords());
        return responseResult;
    }
}

④：控制器：

@PostMapping("/list")
public ResponseResult findList(@RequestBody WmMaterialDto dto){
    return wmMaterialService.findList(dto);
}

完整代码如下：

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.dtos.WmMaterialDto;
import com.heima.wemedia.service.WmMaterialService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/api/v1/material")
public class WmMaterialController {

    @Autowired
    private WmMaterialService wmMaterialService;


    @PostMapping("/upload_picture")
    public ResponseResult uploadPicture(MultipartFile multipartFile){
        return wmMaterialService.uploadPicture(multipartFile);
    }

    @PostMapping("/list")
    public ResponseResult findList(@RequestBody WmMaterialDto dto){
        return wmMaterialService.findList(dto);
    }

}

⑤：在自媒体引导类中添加mybatis-plus的分页拦截器

@Bean
public MybatisPlusInterceptor mybatisPlusInterceptor() {
    MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
    interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
    return interceptor;
}

完整代码如下：

package com.heima.wemedia;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.context.annotation.Bean;


@SpringBootApplication
@EnableDiscoveryClient
@MapperScan("com.heima.wemedia.mapper")
public class WemediaApplication {

    public static void main(String[] args) {
        SpringApplication.run(WemediaApplication.class,args);
    }

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }
}

测试：http://localhost:8802/#/login

启动自媒体网关WemediaGatewayAplication和自媒体微服务WemediaApplication，使用前端项目进行测试

3)自媒体文章管理

3.1)查询所有频道

3.1.1)需求分析

3.1.2)表结构

wm_channel 频道信息表

对应实体类：

package com.heima.model.wemedia.pojos;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;

import java.io.Serializable;
import java.util.Date;

/**
 * <p>
 * 频道信息表
 * </p>
 *
 * @author itheima
 */
@Data
@TableName("wm_channel")
public class WmChannel implements Serializable {

    private static final long serialVersionUID = 1L;

    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;

    /**
     * 频道名称
     */
    @TableField("name")
    private String name;

    /**
     * 频道描述
     */
    @TableField("description")
    private String description;

    /**
     * 是否默认频道
     * 1：默认     true
     * 0：非默认   false
     */
    @TableField("is_default")
    private Boolean isDefault;

    /**
     * 是否启用
     * 1：启用   true
     * 0：禁用   false
     */
    @TableField("status")
    private Boolean status;

    /**
     * 默认排序
     */
    @TableField("ord")
    private Integer ord;

    /**
     * 创建时间
     */
    @TableField("created_time")
    private Date createdTime;

}

3.1.3)接口定义

	说明
接口路径	/api/v1/channel/channels
请求方式	POST
参数	无
响应结果	ResponseResult

ResponseResult （与代码无关） ：

{
  "host": "null",
  "code": 0,
  "errorMessage": "操作成功",
  "data": [
    {
      "id": 4,
      "name": "java",
      "description": "java",
      "isDefault": true,
      "status": false,
      "ord": 3,
      "createdTime": "2019-08-16T10:55:41.000+0000"
    },
    Object {  ... },
    Object {  ... }
  ]
}

3.1.4)功能实现

接口定义：

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/v1/channel")
public class WmchannelController {


    @GetMapping("/channels")
    public ResponseResult findAll(){
        return null;
    }
}

mapper：

package com.heima.wemedia.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.heima.model.wemedia.pojos.WmChannel;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface WmChannelMapper extends BaseMapper<WmChannel> {
}

service：

package com.heima.wemedia.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.pojos.WmChannel;

public interface WmChannelService extends IService<WmChannel> {

    /**
     * 查询所有频道
     * @return
     */
    public ResponseResult findAll();


}

实现类：

package com.heima.wemedia.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.pojos.WmChannel;
import com.heima.wemedia.mapper.WmChannelMapper;
import com.heima.wemedia.service.WmChannelService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@Transactional
@Slf4j
public class WmChannelServiceImpl extends ServiceImpl<WmChannelMapper, WmChannel> implements WmChannelService {


    /**
     * 查询所有频道
     * @return
     */
    @Override
    public ResponseResult findAll() {
        return ResponseResult.okResult(list());
    }
}

控制层：

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.wemedia.service.WmChannelService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/v1/channel")
public class WmchannelController {

    @Autowired
    private WmChannelService wmChannelService;

    @GetMapping("/channels")
    public ResponseResult findAll(){
        return wmChannelService.findAll();
    }
}

3.1.5)测试

测试：http://localhost:8802/#/login

启动自媒体网关WemediaGatewayAplication和自媒体微服务WemediaApplication，使用前端项目进行测试

3.2)查询自媒体文章

3.2.1)需求说明

3.2.2)表结构分析

wm_news 自媒体文章表

对应实体类：

package com.heima.model.wemedia.pojos;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
import org.apache.ibatis.type.Alias;

import java.io.Serializable;
import java.util.Date;

/**
 * <p>
 * 自媒体图文内容信息表
 * </p>
 *
 * @author itheima
 */
@Data
@TableName("wm_news")
public class WmNews implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * 主键
     */
    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;

    /**
     * 自媒体用户ID
     */
    @TableField("user_id")
    private Integer userId;

    /**
     * 标题
     */
    @TableField("title")
    private String title;

    /**
     * 图文内容
     */
    @TableField("content")
    private String content;

    /**
     * 文章布局
            0 无图文章
            1 单图文章
            3 多图文章
     */
    @TableField("type")
    private Short type;

    /**
     * 图文频道ID
     */
    @TableField("channel_id")
    private Integer channelId;

    @TableField("labels")
    private String labels;

    /**
     * 创建时间
     */
    @TableField("created_time")
    private Date createdTime;

    /**
     * 提交时间
     */
    @TableField("submited_time")
    private Date submitedTime;

    /**
     * 当前状态
            0 草稿
            1 提交（待审核）
            2 审核失败
            3 人工审核
            4 人工审核通过
            8 审核通过（待发布）
            9 已发布
     */
    @TableField("status")
    private Short status;

    /**
     * 定时发布时间，不定时则为空
     */
    @TableField("publish_time")
    private Date publishTime;

    /**
     * 拒绝理由
     */
    @TableField("reason")
    private String reason;

    /**
     * 发布库文章ID
     */
    @TableField("article_id")
    private Long articleId;

    /**
     * //图片用逗号分隔
     */
    @TableField("images")
    private String images;

    @TableField("enable")
    private Short enable;
    
     //状态枚举类
    @Alias("WmNewsStatus")
    public enum Status{
        NORMAL((short)0),SUBMIT((short)1),FAIL((short)2),ADMIN_AUTH((short)3),ADMIN_SUCCESS((short)4),SUCCESS((short)8),PUBLISHED((short)9);
        short code;
        Status(short code){
            this.code = code;
        }
        public short getCode(){
            return this.code;
        }
    }

}

3.2.3)接口定义

	说明
接口路径	/api/v1/news/list
请求方式	POST
参数	WmNewsPageReqDto
响应结果	ResponseResult

WmNewsPageReqDto :

package com.heima.model.wemedia.dtos;

import com.heima.model.common.dtos.PageRequestDto;
import lombok.Data;

import java.util.Date;

@Data
public class WmNewsPageReqDto extends PageRequestDto {

    /**
     * 状态
     */
    private Short status;
    /**
     * 开始时间
     */
    private Date beginPubDate;
    /**
     * 结束时间
     */
    private Date endPubDate;
    /**
     * 所属频道ID
     */
    private Integer channelId;
    /**
     * 关键字
     */
    private String keyword;
}

ResponseResult :

{
  "host": "null",
  "code": 0,
  "errorMessage": "操作成功",
  "data": [
    Object { ... },
    Object { ... },
    Object { ... }
    
  ],
  "currentPage":1,
  "size":10,
  "total":21
}

3.2.4)功能实现

①：新增WmNewsController

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.dtos.WmNewsPageReqDto;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController {


    @PostMapping("/list")
    public ResponseResult findAll(@RequestBody WmNewsPageReqDto dto){
        return  null;
    }

}

②：新增WmNewsMapper

package com.heima.wemedia.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.heima.model.wemedia.pojos.WmNews;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface WmNewsMapper  extends BaseMapper<WmNews> {
    
}

③：新增WmNewsService

package com.heima.wemedia.service;


import com.baomidou.mybatisplus.extension.service.IService;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.dtos.WmNewsPageReqDto;
import com.heima.model.wemedia.pojos.WmNews;

public interface WmNewsService extends IService<WmNews> {

    /**
     * 查询文章
     * @param dto
     * @return
     */
    public ResponseResult findAll(WmNewsPageReqDto dto);

}

实现类：

package com.heima.wemedia.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.PageResponseResult;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.dtos.WmNewsPageReqDto;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.thread.WmThreadLocalUtils;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.service.WmNewsService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
@Slf4j
@Transactional
public class WmNewsServiceImpl  extends ServiceImpl<WmNewsMapper, WmNews> implements WmNewsService {

    /**
     * 查询文章
     * @param dto
     * @return
     */
    @Override
    public ResponseResult findAll(WmNewsPageReqDto dto) {

        //1.检查参数
        if(dto == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }
        //分页参数检查
        dto.checkParam();
        //获取当前登录人的信息
        WmUser user = WmThreadLocalUtils.getUser();
        if(user == null){
            return ResponseResult.errorResult(AppHttpCodeEnum.NEED_LOGIN);
        }

        //2.分页条件查询
        IPage page = new Page(dto.getPage(),dto.getSize());
        LambdaQueryWrapper<WmNews> lambdaQueryWrapper = new LambdaQueryWrapper<>();
        //状态精确查询
        if(dto.getStatus() != null){
            lambdaQueryWrapper.eq(WmNews::getStatus,dto.getStatus());
        }

        //频道精确查询
        if(dto.getChannelId() != null){
            lambdaQueryWrapper.eq(WmNews::getChannelId,dto.getChannelId());
        }

        //时间范围查询
        if(dto.getBeginPubDate()!=null && dto.getEndPubDate()!=null){
            lambdaQueryWrapper.between(WmNews::getPublishTime,dto.getBeginPubDate(),dto.getEndPubDate());
        }

        //关键字模糊查询
        if(StringUtils.isNotBlank(dto.getKeyword())){
            lambdaQueryWrapper.like(WmNews::getTitle,dto.getKeyword());
        }

        //查询当前登录用户的文章
        lambdaQueryWrapper.eq(WmNews::getUserId,user.getId());

        //发布时间倒序查询
        lambdaQueryWrapper.orderByDesc(WmNews::getCreatedTime);

        page = page(page,lambdaQueryWrapper);

        //3.结果返回
        ResponseResult responseResult = new PageResponseResult(dto.getPage(),dto.getSize(),(int)page.getTotal());
        responseResult.setData(page.getRecords());

        return responseResult;
    }
   
}

④：控制器

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.dtos.WmNewsPageReqDto;
import com.heima.wemedia.service.WmNewsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController {


    @Autowired
    private WmNewsService wmNewsService;

    @PostMapping("/list")
    public ResponseResult findAll(@RequestBody WmNewsPageReqDto dto){
        return  wmNewsService.findAll(dto);
    }

}

3.2.5)测试

测试：http://localhost:8802/#/login

启动自媒体网关WemediaGatewayAplication和自媒体微服务WemediaApplication，测试文章列表查询

3.3)文章发布

3.3.1)需求分析

3.3.2)表结构分析

保存文章，除了需要wm_news表以外，还需要另外两张表

wm_material 素材表

wm_news_material 文章素材关系表

其中wm_material和wm_news表的实体类已经导入到了项目中，下面是wm_news_material表对应的实体类：

package com.heima.model.wemedia.pojos;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableField;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;

import java.io.Serializable;

/**
 * <p>
 * 自媒体图文引用素材信息表
 * </p>
 *
 * @author itheima
 */
@Data
@TableName("wm_news_material")
public class WmNewsMaterial implements Serializable {

    private static final long serialVersionUID = 1L;

    /**
     * 主键
     */
    @TableId(value = "id", type = IdType.AUTO)
    private Integer id;

    /**
     * 素材ID
     */
    @TableField("material_id")
    private Integer materialId;

    /**
     * 图文ID
     */
    @TableField("news_id")
    private Integer newsId;

    /**
     * 引用类型
            0 内容引用
            1 主图引用
     */
    @TableField("type")
    private Short type;

    /**
     * 引用排序
     */
    @TableField("ord")
    private Short ord;

}

3.3.3)实现思路分析

1.前端提交发布或保存为草稿

2.后台判断请求中是否包含了文章id

3.如果不包含id,则为新增

​ 3.1 执行新增文章的操作

​ 3.2 关联文章内容图片与素材的关系

​ 3.3 关联文章封面图片与素材的关系

4.如果包含了id，则为修改请求

​ 4.1 删除该文章与素材的所有关系

​ 4.2 执行修改操作

​ 4.3 关联文章内容图片与素材的关系

​ 4.4 关联文章封面图片与素材的关系

3.3.4)接口定义

	说明
接口路径	/api/v1/channel/submit
请求方式	POST
参数	WmNewsDto
响应结果	ResponseResult

WmNewsDto ：

package com.heima.model.wemedia.dtos;

import lombok.Data;

import java.util.Date;
import java.util.List;

@Data
public class WmNewsDto {
    
    private Integer id;
     /**
     * 标题
     */
    private String title;
     /**
     * 频道id
     */
    private Integer channelId;
     /**
     * 标签
     */
    private String labels;
     /**
     * 发布时间
     */
    private Date publishTime;
     /**
     * 文章内容
     */
    private String content;
     /**
     * 文章封面类型  0 无图 1 单图 3 多图 -1 自动
     */
    private Short type;
     /**
     * 提交时间
     */
    private Date submitedTime; 
     /**
     * 状态 提交为1  草稿为0
     */
    private Short status;
     
     /**
     * 封面图片列表 多张图以逗号隔开
     */
    private List<String> images;
}

前端给传递过来的json数据格式为（与代码无关）：

{
    "title":"黑马头条项目背景",
    "type":"1",//这个 0 是无图  1 是单图  3 是多图  -1 是自动
    "labels":"黑马头条",
    "publishTime":"2020-03-14T11:35:49.000Z",
    "channelId":1,
    "images":[
        "http://192.168.200.130/group1/M00/00/00/wKjIgl5swbGATaSAAAEPfZfx6Iw790.png"
    ],
    "status":1,
    "content":"[
    {
        "type":"text",
        "value":"随着智能手机的普及，人们更加习惯于通过手机来看新闻。由于生活节奏的加快，很多人只能利用碎片时间来获取信息，因此，对于移动资讯客户端的需求也越来越高。黑马头条项目正是在这样背景下开发出来。黑马头条项目采用当下火热的微服务+大数据技术架构实现。本项目主要着手于获取最新最热新闻资讯，通过大数据分析用户喜好精确推送咨询新闻"
    },
    {
        "type":"image",
        "value":"http://192.168.200.130/group1/M00/00/00/wKjIgl5swbGATaSAAAEPfZfx6Iw790.png"
    }
]"
}

ResponseResult:

{
    “code”:501,
    “errorMessage”:“参数失效"
}

{
    “code”:200,
    “errorMessage”:“操作成功"
}

{
    “code”:501,
    “errorMessage”:“素材引用失效"
}

3.3.5)功能实现

①：在新增WmNewsController中新增方法

@PostMapping("/submit")
public ResponseResult submitNews(@RequestBody WmNewsDto dto){
    return null;
}

完整代码如下：

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.dtos.WmNewsDto;
import com.heima.model.wemedia.dtos.WmNewsPageReqDto;
import com.heima.wemedia.service.WmNewsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController {


    @Autowired
    private WmNewsService wmNewsService;

    @PostMapping("/list")
    public ResponseResult findAll(@RequestBody WmNewsPageReqDto dto){
        return  wmNewsService.findAll(dto);
    }

    @PostMapping("/submit")
    public ResponseResult submitNews(@RequestBody WmNewsDto dto){
        return null;
    }

}

②：新增WmNewsMaterialMapper类，文章与素材的关联关系需要批量保存，索引需要定义mapper文件和对应的映射文件

package com.heima.wemedia.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.heima.model.wemedia.pojos.WmNewsMaterial;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;

import java.util.List;

@Mapper
public interface WmNewsMaterialMapper extends BaseMapper<WmNewsMaterial> {

     void saveRelations(@Param("materialIds") List<Integer> materialIds,@Param("newsId") Integer newsId, @Param("type")Short type);
}

WmNewsMaterialMapper.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.heima.wemedia.mapper.WmNewsMaterialMapper">

    <insert id="saveRelations">
        insert into wm_news_material (material_id,news_id,type,ord)
        values
        <foreach collection="materialIds" index="ord" item="mid" separator=",">
            (#{mid},#{newsId},#{type},#{ord})
        </foreach>
    </insert>

</mapper>

③：常量类准备

package com.heima.common.constants;

public class WemediaConstants {

    public static final Short COLLECT_MATERIAL = 1;//收藏

    public static final Short CANCEL_COLLECT_MATERIAL = 0;//取消收藏

    public static final String WM_NEWS_TYPE_IMAGE = "image";

    public static final Short WM_NEWS_NONE_IMAGE = 0;
    public static final Short WM_NEWS_SINGLE_IMAGE = 1;
    public static final Short WM_NEWS_MANY_IMAGE = 3;
    public static final Short WM_NEWS_TYPE_AUTO = -1;

    public static final Short WM_CONTENT_REFERENCE = 0;
    public static final Short WM_COVER_REFERENCE = 1;
}

④：在WmNewsService中新增方法

/**
 *  发布文章或保存草稿
 * @param dto
 * @return
 */
public ResponseResult submitNews(WmNewsDto dto);

完整代码如下：

package com.heima.wemedia.service;


import com.baomidou.mybatisplus.extension.service.IService;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.dtos.WmNewsDto;
import com.heima.model.wemedia.dtos.WmNewsPageReqDto;
import com.heima.model.wemedia.pojos.WmNews;

public interface WmNewsService extends IService<WmNews> {

    /**
     * 查询文章
     * @param dto
     * @return
     */
    public ResponseResult findAll(WmNewsPageReqDto dto);

    /**
     *  发布文章或保存草稿
     * @param dto
     * @return
     */
    public ResponseResult submitNews(WmNewsDto dto);

}

实现方法：

/**
     * 发布修改文章或保存为草稿
     * @param dto
     * @return
     */
@Override
public ResponseResult submitNews(WmNewsDto dto) {

    //0.条件判断
    if(dto == null || dto.getContent() == null){
        return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
    }

    //1.保存或修改文章

    WmNews wmNews = new WmNews();
    //属性拷贝 属性名词和类型相同才能拷贝
    BeanUtils.copyProperties(dto,wmNews);
    //封面图片  list---> string
    if(dto.getImages() != null && dto.getImages().size() > 0){
        //[1dddfsd.jpg,sdlfjldk.jpg]-->   1dddfsd.jpg,sdlfjldk.jpg
        String imageStr = StringUtils.join(dto.getImages(), ",");
        wmNews.setImages(imageStr);
    }
    //如果当前封面类型为自动 -1
    if(dto.getType().equals(WemediaConstants.WM_NEWS_TYPE_AUTO)){
        wmNews.setType(null);
    }

    saveOrUpdateWmNews(wmNews);

    //2.判断是否为草稿  如果为草稿结束当前方法
    if(dto.getStatus().equals(WmNews.Status.NORMAL.getCode())){
        return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);
    }

    //3.不是草稿，保存文章内容图片与素材的关系
    //获取到文章内容中的图片信息
    List<String> materials =  ectractUrlInfo(dto.getContent());
    saveRelativeInfoForContent(materials,wmNews.getId());

    //4.不是草稿，保存文章封面图片与素材的关系，如果当前布局是自动，需要匹配封面图片
    saveRelativeInfoForCover(dto,wmNews,materials);

    return ResponseResult.okResult(AppHttpCodeEnum.SUCCESS);

}

/**
     * 第一个功能：如果当前封面类型为自动，则设置封面类型的数据
     * 匹配规则：
     * 1，如果内容图片大于等于1，小于3  单图  type 1
     * 2，如果内容图片大于等于3  多图  type 3
     * 3，如果内容没有图片，无图  type 0
     *
     * 第二个功能：保存封面图片与素材的关系
     * @param dto
     * @param wmNews
     * @param materials
     */
private void saveRelativeInfoForCover(WmNewsDto dto, WmNews wmNews, List<String> materials) {

    List<String> images = dto.getImages();

    //如果当前封面类型为自动，则设置封面类型的数据
    if(dto.getType().equals(WemediaConstants.WM_NEWS_TYPE_AUTO)){
        //多图
        if(materials.size() >= 3){
            wmNews.setType(WemediaConstants.WM_NEWS_MANY_IMAGE);
            images = materials.stream().limit(3).collect(Collectors.toList());
        }else if(materials.size() >= 1 && materials.size() < 3){
            //单图
            wmNews.setType(WemediaConstants.WM_NEWS_SINGLE_IMAGE);
            images = materials.stream().limit(1).collect(Collectors.toList());
        }else {
            //无图
            wmNews.setType(WemediaConstants.WM_NEWS_NONE_IMAGE);
        }

        //修改文章
        if(images != null && images.size() > 0){
            wmNews.setImages(StringUtils.join(images,","));
        }
        updateById(wmNews);
    }
    if(images != null && images.size() > 0){
        saveRelativeInfo(images,wmNews.getId(),WemediaConstants.WM_COVER_REFERENCE);
    }

}


/**
     * 处理文章内容图片与素材的关系
     * @param materials
     * @param newsId
     */
private void saveRelativeInfoForContent(List<String> materials, Integer newsId) {
    saveRelativeInfo(materials,newsId,WemediaConstants.WM_CONTENT_REFERENCE);
}

@Autowired
private WmMaterialMapper wmMaterialMapper;

/**
     * 保存文章图片与素材的关系到数据库中
     * @param materials
     * @param newsId
     * @param type
     */
private void saveRelativeInfo(List<String> materials, Integer newsId, Short type) {
    if(materials!=null && !materials.isEmpty()){
        //通过图片的url查询素材的id
        List<WmMaterial> dbMaterials = wmMaterialMapper.selectList(Wrappers.<WmMaterial>lambdaQuery().in(WmMaterial::getUrl, materials));

        //判断素材是否有效
        if(dbMaterials==null || dbMaterials.size() == 0){
            //手动抛出异常   第一个功能：能够提示调用者素材失效了，第二个功能，进行数据的回滚
            throw new CustomException(AppHttpCodeEnum.MATERIASL_REFERENCE_FAIL);
        }

        if(materials.size() != dbMaterials.size()){
            throw new CustomException(AppHttpCodeEnum.MATERIASL_REFERENCE_FAIL);
        }

        List<Integer> idList = dbMaterials.stream().map(WmMaterial::getId).collect(Collectors.toList());

        //批量保存
        wmNewsMaterialMapper.saveRelations(idList,newsId,type);
    }

}


/**
     * 提取文章内容中的图片信息
     * @param content
     * @return
     */
private List<String> ectractUrlInfo(String content) {
    List<String> materials = new ArrayList<>();

    List<Map> maps = JSON.parseArray(content, Map.class);
    for (Map map : maps) {
        if(map.get("type").equals("image")){
            String imgUrl = (String) map.get("value");
            materials.add(imgUrl);
        }
    }

    return materials;
}

@Autowired
private WmNewsMaterialMapper wmNewsMaterialMapper;

/**
     * 保存或修改文章
     * @param wmNews
     */
private void saveOrUpdateWmNews(WmNews wmNews) {
    //补全属性
    wmNews.setUserId(WmThreadLocalUtils.getUser().getId());
    wmNews.setCreatedTime(new Date());
    wmNews.setSubmitedTime(new Date());
    wmNews.setEnable((short)1);//默认上架

    if(wmNews.getId() == null){
        //保存
        save(wmNews);
    }else {
        //修改
        //删除文章图片与素材的关系
        wmNewsMaterialMapper.delete(Wrappers.<WmNewsMaterial>lambdaQuery().eq(WmNewsMaterial::getNewsId,wmNews.getId()));
        updateById(wmNews);
    }

}

完整代码如下：

添加MATERIASL_REFERENCE_FAIL常量：

    //自媒体文章错误3501~3600
    MATERIASL_REFERENCE_FAIL(3501,"素材引用失效");

④：控制器

@PostMapping("/submit")
public ResponseResult submitNews(@RequestBody WmNewsDto dto){
    return  wmNewsService.submitNews(dto);
}

完整代码如下：

package com.heima.wemedia.controller.v1;

import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.dtos.WmNewsDto;
import com.heima.model.wemedia.dtos.WmNewsPageReqDto;
import com.heima.wemedia.service.WmNewsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/api/v1/news")
public class WmNewsController {


    @Autowired
    private WmNewsService wmNewsService;

    @PostMapping("/list")
    public ResponseResult findAll(@RequestBody WmNewsPageReqDto dto){
        return  wmNewsService.findAll(dto);
    }

    @PostMapping("/submit")
    public ResponseResult submitNews(@RequestBody WmNewsDto dto){
        return  wmNewsService.submitNews(dto);
    }

}

3.3.6)测试

测试：http://localhost:8802/#/login

启动自媒体网关WemediaGatewayAplication和自媒体微服务WemediaApplication，测试

点击提交审核，查看内容列表：

到数据库中，可以查看到刚刚保存的文章：