一、BrandMapper
添加删除单个数据的函数和sql语句
@Delete("delete from tb_brand where id=#{id}")void deleteById(int id);
二、BrandService
定义一个删除单个数据的接口
void deleteById(int id);
三、BrandServiceImpl
在BrandServiceImpl重写deleteById方法，实现具体功能
@Overridepublic void deleteById(int id) {//2.获取sqlsession对象SqlSession sqlSession = factory.openSession();//3.获取MapperBrandMapper mapper = sqlSession.getMapper(BrandMapper.class);//mapper.deleteById(id);//sqlSession.commit();//sqlSession.close();}
四、BrandServlet
public void deleteById(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {//1. 接收数据BufferedReader br = request.getReader();String params = br.readLine();//json字符串//转为 intint id = JSON.parseObject(params, int.class);System.out.println("id:"+id);//2. 调用service删除brandService.deleteById(id);//3. 响应成功的标识response.getWriter().write("success");}
五、前端
//删除品牌deleteById(index, row){// 弹出确认提示框this.$confirm('此操作将删除该数据, 是否继续?', '提示', {confirmButtonText: '确定',cancelButtonText: '取消',type: 'warning'}).then(() => {//用户点击确认按钮//2. 发送AJAX请求var _this = this;// 发送ajax请求，添加数据axios({method:"post",url:"http://localhost:8098/brand-case/brand/deleteById",data:row.id}).then(function (resp) {if(resp.data == "success"){//删除成功// 重新查询数据_this.selectAll();// 弹出消息提示_this.$message({message: '恭喜你，删除成功',type: 'success'});}})}).catch(() => {//用户点击取消按钮this.$message({type: 'info',message: '已取消删除'});});},
同时，给删除按钮绑定click事件
<el-button type="danger" @click="deleteById(scope.$index,scope.row)">删除</el-button>
