java根据id批量删除

1.mapper.xml

传入的参数可以是List也可以是Array数组，ParameterType都写List就可以 collection="array"也可以写成collection=“lsit”

 

    <!--批量删除-->
  <delete id="deleteMenuIds" parameterType="java.util.List">
      delete from sys_menu where menu_id in 
      <foreach collection="array" open="(" close=")" separator="," item="id">
          #{id}
      </foreach>
  </delete>

　

2.dao层

int deleteMenuIds(Long[] ids);

　　

3.pojo层

package com.qingfeng.pojo;

import java.io.Serializable;

public class SysMenu implements Serializable {
    private Long menuId;

    private Long parentId;

    private String name;

    private String url;


    public Long getMenuId() {
        return menuId;
    }

    public void setMenuId(Long menuId) {
        this.menuId = menuId;
    }

    public Long getParentId() {
        return parentId;
    }

    public void setParentId(Long parentId) {
        this.parentId = parentId;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name == null ? null : name.trim();
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url == null ? null : url.trim();
    }
  
}

　　

4.service层

public R deleteMenu(Long[] ids) {
        int i = sysMenuMapper.deleteMenuIds(ids);
        if (i>0){
            return R.ok();
        }else {
            return R.error("删除失败");
        }

    }

　　

5.controller层

@PostMapping("/sys/delete")
    @ResponseBody
    public R del(Long[] ids){
        return  sysMenuService.deleteMenu(ids);
    }

　　

6.测试

http://localhost:8080/sys/delete?ids=1,2,5