Spring+SprinMVC+MyBatis注解方式简易模板代码Demo GitHub访问 ssm-tpl-anno
一、数据准备
创建数据库test，执行下方SQL创建表ssm-tpl-cfg
/*
Navicat Premium Data Transfer
Source Server : 127.0.0.1
Source Server Type : MySQL
Source Server Version : 80030
Source Host : 127.0.0.1:3306
Source Schema : test
Target Server Type : MySQL
Target Server Version : 80030
File Encoding : 65001
Date: 17/10/2022 00:52:07
*/
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
-- ----------------------------
-- Table structure for ssm-tpl-cfg
-- ----------------------------
DROP TABLE IF EXISTS `ssm-tpl-cfg`;
CREATE TABLE `ssm-tpl-cfg` (
`id` bigint NOT NULL COMMENT '主键编号',
`name` varchar(255) COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '测试名称',
PRIMARY KEY (`id`)
) COMMENT '初始SSM表结构数据' ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci;
-- ----------------------------
-- Records of ssm-tpl-cfg
-- ----------------------------
BEGIN;
INSERT INTO `ssm-tpl-cfg` (`id`, `name`) VALUES (2210162246100000, '左翰林');
INSERT INTO `ssm-tpl-cfg` (`id`, `name`) VALUES (2210162257100000, '刘卓神');
COMMIT;
SET FOREIGN_KEY_CHECKS = 1;
二、代码实现
2.1 pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tpl.ssm.anno</groupId>
<artifactId>ssm-tpl-anno</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<spring_version>5.1.18.RELEASE</spring_version>
<jackson_version>2.9.7</jackson_version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-messaging</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring_version}</version>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus</artifactId>
<version>3.4.2</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-annotation</artifactId>
<version>3.4.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.11</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.2.16</version>
</dependency>
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.5</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.15.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.15.2</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.15.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>2.0.7</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.36</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.2</version>
</dependency>
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.9.4</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>commons-pool</groupId>
<artifactId>commons-pool</artifactId>
<version>1.6</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.9.7</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.7</version>
</dependency>
<dependency>
<groupId>com.google.code.findbugs</groupId>
<artifactId>annotations</artifactId>
<version>2.0.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.alibaba.fastjson2</groupId>
<artifactId>fastjson2</artifactId>
<version>2.0.25</version>
</dependency>
</dependencies>
</project>
2.2 Spring和Mybatis配置
package com.tpl.ssm.anno.config;
import com.alibaba.druid.pool.DruidDataSource;
import com.baomidou.mybatisplus.core.MybatisConfiguration;
import org.apache.ibatis.logging.stdout.StdOutImpl;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import javax.sql.DataSource;
import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/*
* Spring配置类
*
* <!-- 扫描service -->
* <context:component-scan base-package="com.tpl.ssm.cfg.service"/>
*/
@ComponentScan(basePackages = {"com.tpl.ssm.anno.service"}, excludeFilters = {
@ComponentScan.Filter(type = FilterType.ANNOTATION, value = org.springframework.stereotype.Controller.class)
})
@EnableTransactionManagement
@Configuration
public class SpringConfig {
private static final Logger logger = LoggerFactory.getLogger(SpringConfig.class);
/*
* <!-- 配置数据库连接池 -->
* <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
* <!-- 四大连接参数 -->
* <property name="driverClassName" value="${jdbc.driverClassName}"/>
* <property name="url" value="${jdbc.url}"/>
* <property name="username" value="${jdbc.username}"/>
* <property name="password" value="${jdbc.password}"/>
* <!-- 连接池配置信息 -->
* <property name="initialSize" value="${jdbc.initialSize}"/>
* <property name="minIdle" value="${jdbc.minIdle}"/>
* <property name="maxActive" value="${jdbc.maxActive}"/>
* <property name="maxWait" value="${jdbc.maxWait}"/>
* <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 -->
* <property name="timeBetweenEvictionRunsMillis" value="60000"/>
* <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 -->
* <property name="minEvictableIdleTimeMillis" value="300000" />
* <!-- Druid用来测试连接是否可用的SQL语句,默认值每种数据库都不相同-->
* <property name="validationQuery" value="SELECT 'x'" />
* <!-- 指明连接是否被空闲连接回收器(如果有)进行检验.如果检测失败,则连接将被从池中去除. -->
* <property name="testWhileIdle" value="true" />
* <!-- 指明是否在从池中取出连接前进行检验,如果检验失败,则从池中去除连接并尝试取出另一个 -->
* <property name="testOnBorrow" value="false" />
* <!-- 指明是否在归还到池中前进行检验 -->
* <property name="testOnReturn" value="false" />
* <!-- 配置监控统计拦截的filters -->
* <property name="filters" value="wall,stat" />
* </bean>
*/
@Bean(name = "dataSource")
public DruidDataSource druidDataSource() {
// 基本属性 url、user、password
DruidDataSource druidDataSource = new DruidDataSource();
druidDataSource.setUrl("jdbc:mysql://localhost:3306/test");
druidDataSource.setUsername("root");
druidDataSource.setPassword("root");
// 配置初始化大小、最小、最大
druidDataSource.setInitialSize(10);
druidDataSource.setMinIdle(10);
druidDataSource.setMaxActive(50);
// 配置获取连接等待超时的时间
druidDataSource.setMaxWait(60000);
// 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
druidDataSource.setTimeBetweenEvictionRunsMillis(60000);
// 配置一个连接在池中最小生存的时间，单位是毫秒
druidDataSource.setMinEvictableIdleTimeMillis(300000);
druidDataSource.setValidationQuery("SELECT 1");
druidDataSource.setTestWhileIdle(true);
druidDataSource.setTestOnBorrow(false);
druidDataSource.setTestOnReturn(false);
// 打开PSCache，并且指定每个连接上PSCache的大小
// 如果用Oracle，则把poolPreparedStatements配置为true，
// mysql可以配置为false。
druidDataSource.setPoolPreparedStatements(true);
druidDataSource.setMaxPoolPreparedStatementPerConnectionSize(20);
// 配置监控统计拦截的filters
try {
druidDataSource.setFilters("wall,stat");
} catch (SQLException e) {
logger.error("配置监控统计拦截的filters error: ", e);
}
return druidDataSource;
}
/*
* <!-- 配置sessionFactory -->
* <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
* <!-- 注入数据源 -->
* <property name="dataSource" ref="dataSource"/>
* <!-- mapper文件位置 -->
* <property name="mapperLocations" value="classpath:mapper/*DAO.xml"/>
* <!-- mybatis核心配置文件位置 -->
* <property name="configLocation" value="classpath:config/mybatis-config.xml"/>
* </bean>
*/
@Bean(name = "sqlSessionFactory")
public SqlSessionFactoryBean sqlSessionFactoryBean() {
SqlSessionFactoryBean sqlSessionFactory = new SqlSessionFactoryBean();
sqlSessionFactory.setMapperLocations(resolveMapperLocations());
sqlSessionFactory.setDataSource(druidDataSource());
/*
* <?xml version="1.0" encoding="UTF-8" ?>
* <!DOCTYPE configuration
* PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
* "http://mybatis.org/dtd/mybatis-3-config.dtd">
* <configuration>
*
* <!-- 配置信息 -->
* <settings>
* <!-- 映射下划线到驼峰命名 -->
* <setting name="mapUnderscoreToCamelCase" value="true"/>
* <!-- 配置开启二级缓存 -->
* <setting name="cacheEnabled" value="true"/>
* <!-- 开启控制台打印SQL -->
* <setting name="logImpl" value="STDOUT_LOGGING"/>
* </settings>
*
* <!-- 别名 -->
* <typeAliases>
* <package name="com.tpl.ssm.cfg.entity"/>
* </typeAliases>
* </configuration>
*/
MybatisConfiguration mybatisConfiguration = new MybatisConfiguration();
mybatisConfiguration.setMapUnderscoreToCamelCase(true);
mybatisConfiguration.setCacheEnabled(true);
mybatisConfiguration.setLogImpl(StdOutImpl.class);
mybatisConfiguration.getTypeAliasRegistry().registerAliases("com.tpl.ssm.anno.entity");
sqlSessionFactory.setConfiguration(mybatisConfiguration);
return sqlSessionFactory;
}
// https://wenku.baidu.com/view/1b9ade1640323968011ca300a6c30c225901f0c2.html
public Resource[] resolveMapperLocations() {
PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
List<String> mapperLocations = new ArrayList<>();
mapperLocations.add("classpath:mapper/*DAO.xml");
List<Resource> resources = new ArrayList<>();
for (String mapperLocation : mapperLocations) {
Resource[] mappers = new Resource[0];
try {
mappers = resolver.getResources(mapperLocation);
} catch (IOException e) {
e.printStackTrace();
}
resources.addAll(Arrays.asList(mappers));
}
return resources.toArray(new Resource[0]);
}
/*
* <!-- 配置扫描mapper生成代理对象 -->
* <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
* <property name="basePackage" value="com.tpl.ssm.cfg.dao"/>
* <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
* </bean>
*/
@Bean
public MapperScannerConfigurer mapperScannerConfigurer() {
MapperScannerConfigurer mapperScannerConfigurer = new MapperScannerConfigurer();
mapperScannerConfigurer.setBasePackage("com.tpl.ssm.anno.dao");
mapperScannerConfigurer.setSqlSessionFactoryBeanName("sqlSessionFactory");
return mapperScannerConfigurer;
}
/* 事务管理器配置
* <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
* <property name="dataSource" ref="dataSourceProxy"/>
* </bean>
*/
@Bean(name = "transactionManager")
public DataSourceTransactionManager transactionManager(DataSource dataSource) {
DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();
dataSourceTransactionManager.setDataSource(dataSource);
return dataSourceTransactionManager;
}
}
2.3 SpringMVC配置
package com.tpl.ssm.anno.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
/* 开启controller注解支持
* 注意事项请参考：http://jinnianshilongnian.iteye.com/blog/1762632
*
* <context:component-scan base-package="com.tpl.ssm.cfg.controller"/>
*/
@ComponentScan(basePackages = {
"com.tpl.ssm.anno.controller"
}, includeFilters = {
@ComponentScan.Filter(type = FilterType.ANNOTATION, value = org.springframework.stereotype.Controller.class),
@ComponentScan.Filter(type = FilterType.ANNOTATION, value = org.springframework.web.bind.annotation.ControllerAdvice.class)
}, useDefaultFilters = false)
@EnableWebMvc
@Configuration
// <import resource="spring-mvc-xxx.xml"/>
// @Import(value = {SpringMvcXxxConfig.class})
public class SpringMVCConfig implements WebMvcConfigurer {
/* <!-- 配置SpringMVC视图解析器 -->
* <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
* <property name="prefix" value="/pages/"/>
* <property name="suffix" value=".jsp"/>
* </bean>
*/
@Bean
public InternalResourceViewResolver viewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setViewClass(org.springframework.web.servlet.view.JstlView.class);
resolver.setPrefix("/pages/");
resolver.setSuffix(".jsp");
return resolver;
}
/* <!-- 释放静态资源文件 -->
* <mvc:resources mapping="/js/" location="/js/**"/>
* <mvc:resources mapping="/css/" location="/css/**"/>
* <mvc:resources mapping="/images/" location="/images/**"/>
*/
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/js/").addResourceLocations("/js/**");
registry.addResourceHandler("/css/").addResourceLocations("/css/**");
registry.addResourceHandler("/images/").addResourceLocations("/images/**");
}
// 文件解析器
@Bean
public CommonsMultipartResolver multipartResolver() {
CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver();
// maxUploadSizePerFile:单个文件大小限制（byte）
// maxUploadSize：整个请求大小限制（byte）
commonsMultipartResolver.setMaxUploadSizePerFile(10 * 1024 * 1024); // 10M
commonsMultipartResolver.setMaxUploadSize(100 * 1024 * 1024); // 100M
return commonsMultipartResolver;
}
}
2.4 web.xml配置
package com.tpl.ssm.anno.config;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.filter.CharacterEncodingFilter;
import org.springframework.web.servlet.DispatcherServlet;
import javax.servlet.FilterRegistration;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
/**
* Web应用启动入口
* <p/>
* <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
* xmlns="http://xmlns.jcp.org/xml/ns/javaee"
* xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
* http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
* </web-app>
*/
public class WebInitializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext servletContext) throws ServletException {
// 父容器配置
AnnotationConfigWebApplicationContext springCtx = new AnnotationConfigWebApplicationContext();
springCtx.setDisplayName("ssm-tpl-anno"); // 部署应用的名称 <display-name>ssm-tpl-anno</display-name>
/*
* <!-- Spring配置文件开始 -->
* <context-param>
* <param-name>contextConfigLocation</param-name>
* <param-value>
* classpath:spring-config.xml
* </param-value>
* </context-param>
* <listener>
* <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
* </listener>
* <!-- Spring配置文件结束 -->
*/
springCtx.register(SpringConfig.class);
// 通过监听器加载配置信息
servletContext.addListener(new ContextLoaderListener(springCtx));
/* 可以使用RequestContextHolder.currentRequestAttributes() 获取到请求的attr
* <listener>
* <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
* </listener>
*/
servletContext.addListener(org.springframework.web.context.request.RequestContextListener.class);
// 子容器配置
AnnotationConfigWebApplicationContext mvcCtx = new AnnotationConfigWebApplicationContext();
/*
* <!-- SpringMVC配置文件开始 -->
* <servlet>
* <servlet-name>springMVC</servlet-name>
* <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
* <init-param>
* <param-name>contextConfigLocation</param-name>
* <param-value>classpath:spring-mvc.xml</param-value>
* </init-param>
* <load-on-startup>1</load-on-startup>
* <async-supported>true</async-supported>
* </servlet>
* <servlet-mapping>
* <servlet-name>springMVC</servlet-name>
* <url-pattern>/</url-pattern>
* </servlet-mapping>
* <!-- SpringMVC配置文件结束 -->
*/
mvcCtx.register(SpringMVCConfig.class);
ServletRegistration.Dynamic servlet = servletContext.addServlet(
"DispatcherServlet",
new DispatcherServlet(mvcCtx));
servlet.setLoadOnStartup(1);
servlet.setAsyncSupported(true);
servlet.addMapping("/");
/*
* <!-- 设置servlet编码开始 -->
* <filter>
* <filter-name>CharacterEncodingFilter</filter-name>
* <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
* <async-supported>true</async-supported>
* <init-param>
* <param-name>encoding</param-name>
* <param-value>UTF-8</param-value>
* </init-param>
* <init-param>
* <param-name>forceEncoding</param-name>
* <param-value>true</param-value>
* </init-param>
* </filter>
* <filter-mapping>
* <filter-name>CharacterEncodingFilter</filter-name>
* <url-pattern>/*</url-pattern>
* </filter-mapping>
* <!-- 设置servlet编码结束 -->
*/
FilterRegistration.Dynamic encodingFilter = servletContext.addFilter(
"CharacterEncodingFilter",
new CharacterEncodingFilter("UTF-8", true));
encodingFilter.setAsyncSupported(true);
encodingFilter.addMappingForUrlPatterns(null, false, "/*");
}
}
2.5 Entity
package com.tpl.ssm.anno.entity;
import com.alibaba.fastjson2.JSONObject;
import com.baomidou.mybatisplus.annotation.TableField;
import com.fasterxml.jackson.annotation.JsonIgnore;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* 测试实体
*/
public class TestEntity {
/**
* 主键编号
*/
private Long id;
/**
* 测试名称
*/
private String name;
private JSONObject flowImg;
private String flowImgStr;
/**
* 扩展字段
*/
@JsonIgnore
@TableField(exist = false)
private Map<String, Object> ext = new LinkedHashMap<>(5);
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Map<String, Object> getExt() {
return ext;
}
public void setExt(Map<String, Object> ext) {
this.ext = ext;
}
public JSONObject getFlowImg() {
return flowImg;
}
public void setFlowImg(JSONObject flowImg) {
this.flowImg = flowImg;
}
public String getFlowImgStr() {
return flowImgStr;
}
public void setFlowImgStr(String flowImgStr) {
this.flowImgStr = flowImgStr;
}
}
2.6 Controller
package com.tpl.ssm.anno.controller;
import com.tpl.ssm.anno.entity.TestEntity;
import com.tpl.ssm.anno.service.TestService;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import java.util.List;
/**
* 1. Spring5.1.x -> jackson2.9.x
* 2.The origin server did not find a current representation for the target resource
* 原因是WEB-INF只能转发进去, 重定向是进不去的
*/
@Controller
@RequestMapping("/test")
public class TestController {
private final TestService testService;
public TestController(TestService testService) {
this.testService = testService;
}
@GetMapping("/")
public String listTests(TestEntity test, Model model) {
List<TestEntity> tests = testService.listTests(test);
model.addAttribute("tests", tests);
return "test";
}
@PostMapping("/save")
public String saveTest(@RequestBody TestEntity test) {
testService.saveTest(test);
return "redirect:/test/";
}
@PostMapping("/modify")
public String modifyTest(TestEntity test) {
testService.modifyTest(test);
return "redirect:/test/";
}
@RequestMapping("/remove")
public String removeTest(TestEntity test) {
testService.removeTest(test);
return "redirect:/test/";
}
}
2.7 Service
package com.tpl.ssm.anno.service;
import com.tpl.ssm.anno.entity.TestEntity;
import java.util.List;
public interface TestService {
/**
* 测试集
*
* @param cond 查询条件
* @return 测试集
*/
public List<TestEntity> listTests(TestEntity cond);
/**
* 单一测试实体
*
* @param cond 查询条件
* @return 测试实体
*/
public TestEntity singleTest(TestEntity cond);
/**
* 新增测试记录
*
* @param cond 查询条件
* @return 受影响的条数
*/
public boolean saveTest(TestEntity cond);
/**
* @param cond 查询条件
* @return 受影响的条数
*/
public boolean modifyTest(TestEntity cond);
/**
* 删除一条测试记录
*
* @param cond 查询条件
* @return 受影响的条数
*/
public boolean removeTest(TestEntity cond);
/**
* 删除多条测试记录
*
* @param testIds 测试实体主键集
* @return 受影响的条数
*/
public boolean removeTests(List<Long> testIds);
}
package com.tpl.ssm.anno.service.impl;
import com.tpl.ssm.anno.dao.TestDAO;
import com.tpl.ssm.anno.entity.TestEntity;
import com.tpl.ssm.anno.service.TestService;
import com.tpl.ssm.anno.util.MajorKeyUtil;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
public class TestServiceImpl implements TestService {
private final TestDAO testDAO;
public TestServiceImpl(TestDAO testDAO) {
this.testDAO = testDAO;
}
@Override
public List<TestEntity> listTests(TestEntity cond) {
return testDAO.listTests(cond);
}
@Override
public TestEntity singleTest(TestEntity cond) {
return testDAO.singleTest(cond);
}
@Override
public boolean saveTest(TestEntity cond) {
cond.setId(MajorKeyUtil.idSeq());
cond.setFlowImgStr(cond.getFlowImg().toString());
return testDAO.insertTest(cond) > 0;
}
@Override
public boolean modifyTest(TestEntity cond) {
return testDAO.updateTest(cond) > 0;
}
@Override
public boolean removeTest(TestEntity cond) {
return testDAO.deleteTest(cond) > 0;
}
@Override
public boolean removeTests(List<Long> testIds) {
return testDAO.deleteTests(testIds) > 0;
}
}
2.8 DAO
package com.tpl.ssm.anno.dao;
import com.tpl.ssm.anno.entity.TestEntity;
import java.util.List;
/**
* 测试DAO
* <p>
* 1.查询测试记录列表 - listTests
* 2.查询单个测试记录 - singleTest
* 3.新增测试记录 - insertTest
* 4.修改测试记录 - updateTest
* 5.删除测试记录 - deleteTest
* 6.根据主键集删除测试记录 - deleteTests
*/
public interface TestDAO {
/**
* 测试集
*
* @param cond 查询条件
* @return 测试集
*/
public List<TestEntity> listTests(TestEntity cond);
/**
* 单一测试实体
*
* @param cond 查询条件
* @return 测试实体
*/
public TestEntity singleTest(TestEntity cond);
/**
* 新增测试记录
*
* @param cond 查询条件
* @return 受影响的条数
*/
public int insertTest(TestEntity cond);
/**
* @param cond 查询条件
* @return 受影响的条数
*/
public int updateTest(TestEntity cond);
/**
* 删除一条测试记录
*
* @param cond 查询条件
* @return 受影响的条数
*/
public int deleteTest(TestEntity cond);
/**
* 删除多条测试记录
*
* @param testIds 测试实体主键集
* @return 受影响的条数
*/
public int deleteTests(List<Long> testIds);
}
<?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.tpl.ssm.anno.dao.TestDAO">
<!-- 基础查询 sql 片段 -->
<sql id="baseSelect">
SELECT id, name
</sql>
<!-- 基础查询 where 片段 -->
<sql id="baseWhere">
<if test="id != null">
AND id = #{id}
</if>
<if test="name != null and name != ''">
AND name like CONCAT('%', #{name})
</if>
</sql>
<!-- 查询测试记录列表 -->
<select id="listTests" parameterType="com.tpl.ssm.anno.entity.TestEntity" resultType="com.tpl.ssm.anno.entity.TestEntity">
<include refid="baseSelect"/>
FROM `ssm-tpl-cfg`
WHERE
1 = 1
<include refid="baseWhere"/>
</select>
<!-- 查询单个测试记录 -->
<select id="singleTest" parameterType="com.tpl.ssm.anno.entity.TestEntity" resultType="com.tpl.ssm.anno.entity.TestEntity">
<include refid="baseSelect"/>
FROM `ssm-tpl-cfg`
WHERE
1 = 1
<include refid="baseWhere"/>
limit 1
</select>
<!-- 新增测试记录 -->
<insert id="insertTest" parameterType="com.tpl.ssm.anno.entity.TestEntity">
INSERT INTO `ssm-tpl-cfg`(id, name, flow_img)
VALUES (#{id}, #{name}, #{flowImgStr})
</insert>
<!-- 修改测试记录 -->
<update id="updateTest" parameterType="com.tpl.ssm.anno.entity.TestEntity">
UPDATE `ssm-tpl-cfg`
SET
<if test="name != null and name != ''">
name = #{name}
</if>
WHERE id = #{id}
</update>
<!-- 删除测试记录 -->
<delete id="deleteTest" parameterType="com.tpl.ssm.anno.entity.TestEntity">
DELETE
FROM `ssm-tpl-cfg`
WHERE 1 = 1
<include refid="baseWhere"/>
</delete>
<!-- 根据主键集删除测试记录 -->
<delete id="deleteTests" parameterType="long">
DELETE
FROM `ssm-tpl-cfg`
WHERE id in
<foreach collection="item" open="(" separator="," close=")">
#{item}
</foreach>
</delete>
</mapper>
2.9 webapps/pages/test.jsp
<%--
Created by IntelliJ IDEA.
User: wangfeihu
Date: 2022/10/16
Time: 18:35
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>CRUD TEST</title>
</head>
<body>
<table>
<c:forEach items="${tests}" var="test">
<tr>
<td>${test.id}</td>
<td>${test.name}</td>
<td>
<button onclick="let modifyForms = document.getElementsByName('modifyForm'); modifyForms.forEach(item => item.style.display = 'none'); document.getElementById('form${test.id}').style.display = 'inline'">修改</button>
<button onclick="location.href='${pageContext.request.contextPath}/test/remove?id=${test.id}'">删除</button>
</td>
<td>
<form id="form${test.id}" name="modifyForm" action="${pageContext.request.contextPath}/test/modify" method="post" style="display: none">
<input hidden name="id" value="${test.id}">
<input name="name" value="${test.name}">
<button type="submit">确认修改</button>
</form>
</td>
</tr>
</c:forEach>
</table>
<form action="${pageContext.request.contextPath}/test/save" method="post">
<label>
<input name="name" id="name" placeholder="请输入测试名称~">
</label>
<button type="submit">提交</button>
</form>
</body>
</html>
2.10 配置项目访问路径
三、访问测试
一个简单的基于注解的增删改查就实现了
![[小程序]使用代码渲染页面](https://img-blog.csdnimg.cn/direct/deff44aaaefd4ca89bd5f2f7ab49614a.png)
