SpringBootRestFul快速入门

/**
     * ajax操作：保存客户信息
     * @param customer
     */
    @PostMapping("/saveCustomer")
    public ResponseEntity saveCustomer(Customer customer){
        //1、获取表单信息(参数)
        //2、调用service保存信息
        try {
            customerServiceImpl.saveCustomer(customer);
        } catch (Exception e) {
            //保存失败
//            return new Msg(e.getMessage(),false);
//            return new ResponseEntity(HttpStatus.INTERNAL_SERVER_ERROR);//只能抛出500状态码
            return ResponseEntity.ok(new Msg(e.getMessage(),false));
        }
        //保存成功
        //3、获取service结果，写出响应体
        return ResponseEntity.ok(new Msg("保存成功",true));
    }

/**
     * ajax修改客户信息
     * @return
     */
    @PutMapping("/modifyCustomer")
    public ResponseEntity modifyCustomer(Customer customer){
        //1、调用service进行修改
        try {
            customerServiceImpl.modifyCustomer(customer);
            //2、根据service处理结果，将结果写出响应体
        } catch (Exception e) {
            //若出现异常，修改失败，将异常信息写出响应体即可
            return ResponseEntity.ok(new Msg(e.getMessage(),false));
        }
        //若未出异常，修改成功
        return ResponseEntity.ok(new Msg("修改成功",true));
    }

/**
     * ajax删除客户信息
     * @return
     */
    @DeleteMapping("/deleteCustomerByCustId/{cust_id}")
    public ResponseEntity deleteCustomerByCustId(@PathVariable("cust_id")Long cust_id){
        //1、调用service进行删除
        //2、根据删除结果，进行响应体写出
        try {
            customerServiceImpl.deleteCustomerByCustId(cust_id);
        } catch (Exception e) {
            return ResponseEntity.ok(new Msg(e.getMessage(),false));
        }
        return ResponseEntity.ok(new Msg("删除成功",true));
    }

//1、页面加载完成时，为保存按钮绑定点击事件
      $("#saveBtn").click(function () {
        //2、点击事件中，发送ajax请求到控制器，提交整个表单数据
        $.ajax({
          type:"post",
          url:"${pageContext.request.contextPath}/customer/saveCustomer",
          data:$("#f1").serialize(),
          contentType:"application/x-www-form-urlencoded",
          dataType:"json",
          statusCode:{
            200:function (data) {
              alert(data.msg);
            },
            500:function () {
              alert("服务器异常，请联系管理员!");
            }
          }
        });
      });

//2、页面加载完成时，为修改按钮绑定点击事件，点击按钮，ajax方式提交表单
      $("#modifyBtn").click(function () {
        $.ajax({
          type:"put",
          url:"${pageContext.request.contextPath}/customer/modifyCustomer",
          data:$("#f1").serialize(),
          contentType:"application/x-www-form-urlencoded",
          dataType:"json",
          statusCode:{
            200:function (data) {
              //1、判断修改结果成功与否
              //2、根据修改结果，进行分别处理
              alert(data.msg);
              if(data.flag){
                //修改成功，跳转到 查询所有的功能
                location.href="${pageContext.request.contextPath}/customer/clist";
              }
            },
            500:function () {
              alert("服务器异常，请联系管理员！");
            }
          }
        });
      });

//删除某个客户信息
  function deleteCustomerByCustId(cust_id) {
    //加入是否删除判断
    if(confirm("是否删除该客户信息？")){
      //通过ajax，向控制器发送请求，请求删除该客户信息
      $.ajax({
        type:"delete",
        url:"${pageContext.request.contextPath}/customer/deleteCustomerByCustId/"+cust_id,
        dataType:"json",
        statusCode:{
          200:function (data) {
            //1、展示字符串结果
            alert(data.msg);
            //2、若删除成功，刷新整体页面
            if(data.flag){
              location.href="${pageContext.request.contextPath}/customer/clist";
            }
          },
          500:function () {
            alert("服务器异常，请联系管理员!");
          }
        }
      });
    }
  }