pojo.Category
package com.lin.springboot01.pojo;
import jakarta.validation.constraints.NotEmpty;
import lombok.Data;
import java.time.LocalDateTime;
@Data
public class Category {
private Integer id;//主键
@NotEmpty
private String categoryName;//分类名称
@NotEmpty
private String categoryAlias;//分类别名
private Integer createUser;//创建人ID
private LocalDateTime createTime;//创建时间
private LocalDateTime updateTime;//更新时间
}
controller.CategoryController
package com.lin.springboot01.controller;
import com.lin.springboot01.pojo.Category;
import com.lin.springboot01.pojo.Result;
import com.lin.springboot01.service.CategoryService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.annotation.Validated;
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注解,相当于@Controller+@ResponseBody两个注解的结合,
// 返回json数据不需要在方法前面加@ResponseBody注解了,
// 但使用@RestController这个注解,就不能返回jsp,html页面,视图解析器无法解析jsp,html页面
@RestController
@RequestMapping("/category")
public class CategoryController {
@Autowired
private CategoryService categoryService;
@PostMapping
//@RequestBody,请求参数形式必须是json格式,表格提单不可以用。去掉就可以使用表单提交,不能用json提交
public Result add(@RequestBody @Validated Category category){
categoryService.add(category);
return Result.success();
}
}
service.CategoryService
package com.lin.springboot01.service;
import com.lin.springboot01.pojo.Category;
public interface CategoryService {
void add(Category category);
}
service.impl.CategoryServiceImpl
package com.lin.springboot01.service.impl;
import com.lin.springboot01.mapper.CategoryMapper;
import com.lin.springboot01.pojo.Category;
import com.lin.springboot01.service.CategoryService;
import com.lin.springboot01.utils.ThreadLocalUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.time.LocalDateTime;
import java.util.Map;
@Service
public class CategoryServiceImpl implements CategoryService {
@Autowired
private CategoryMapper categoryMapper;
@Override
public void add(Category category) {
category.setCreateTime(LocalDateTime.now());
category.setUpdateTime(LocalDateTime.now());
Map<String,Object> map = ThreadLocalUtil.get();
Integer id = (Integer) map.get("id");
category.setCreateUser(id);
categoryMapper.add(category);
}
}
mapper.CategoryMapper
package com.lin.springboot01.mapper;
import com.lin.springboot01.pojo.Category;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Mapper;
@Mapper
public interface CategoryMapper {
//新增
@Insert("insert into category(category_name,category_alias,create_user,create_time,update_time) values (" +
"#{categoryName},#{categoryAlias},#{createUser},#{createTime},#{updateTime })")
void add(Category category);
}
完成: