Java使用PUT提交请求错误码400及415解决方案

文章目录

• • • • 0. 初始状态
      • 1. 请求报错 `400` Required int parameter 'id' is not present
      • 2. `415` 不支持 'application/x-www-form-urlencoded;charset=UTF-8
      • 3. `400` Unrecognized token 'id': was expecting ('true', 'false' or 'null')
      • 4. delete操作

---

0. 初始状态

• 前端

<script>
    $("#btn").on("click", function (e) {
        $.ajax({
            url: "/xxx",
            type: "put",
            data: {
                'id': 1,
                'name': '你猜'
            }
        })
    });
</script>

• 后端

 @PutMapping("/test")
 public String updateTaskCordName(@RequestParam(name="id") int id, @RequestParam(name="name") String name) {
	//业务代码
}

1. 请求报错 400 Required int parameter ‘id’ is not present

• 问题描述

error: "Bad Request"
message: "Required int parameter 'id' is not present"
path: "/test"
status: 400

• 解决方案 更改后端代码

 @PutMapping("/test")
 public String updateTaskCordName(@RequestBody Map<String, String> map) {
 		Integer id = Integer.parseInt(map.get("id"));
        String name = map.get("name");
		//业务代码
}

2. 415 不支持 'application/x-www-form-urlencoded;charset=UTF-8

• 问题描述

  error: "Unsupported Media Type"
  message: "Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported"
  path: "/test"
  status: 415
  

• 解决方案
  ajax 请求添加配置参数 contentType: "application/json; charset=utf-8",
  即，前端

  <script>
      $("#btn").on("click", function (e) {
          $.ajax({
              url: "/xxx",
              type: "put",
              contentType: "application/json; charset=utf-8",
              data: {
                  'id': 1,
                  'name': '你猜'
              }
          })
      });
  </script>
  

3. 400 Unrecognized token ‘id’: was expecting (‘true’, ‘false’ or ‘null’)

• 问题描述

  error: "Bad Request"
  message: "JSON parse error: Unrecognized token 'id': was expecting ('true', 'false' or 'null'); nested exception is : Unrecognized token 'id': was expecting ('true', 'false' or 'null')↵ at [Source: (PushbackInputStream); line: 1, column: 4]"
  path: "/taskCord"
  status: 400
  

• 解决方案 data参数调用 ()函数

  <script>
      $("#btn").on("click", function (e) {
          $.ajax({
              url: "/xxx",
              type: "put",
              contentType: "application/json; charset=utf-8",
              data: JSON.stringify({
                  'id': 1,
                  'name': '你猜'
              })
          })
      });
  </script>
  

附：

4. delete操作

@DeleteMapping("/db/{id}")
public String deleteById(@PathVariable(name="id") int id) {
	//业务代码
}

<script>
    $("#btn").on("click", function (e) {
        $.ajax({
            url: "/db"+1,
            type: "delete"	          
        })
    });
</script>

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