前端传数据出错pleted 415 UNSUPPORTED_MEDIA_TYPE，Content type ‘application/json；charset=UTF-8‘ not supported

前端发送一个整型类型的数组发送给服务器报错

1.前端代码

      $(function () {
         $.ajax({
              url: "send/array/three.html",
              type: "post",
              contentType: "application/json;charset=UTF-8",
              data: JSON.stringify([5,8,12]),
              success: function (response) {
                  alert("成功"+response)
              },
              error: function (response) {
                  alert("失败"+response.toString())
              }
         })
       }); 

2.后端代码

    @RequestMapping("/send/array/three.html")
    @ResponseBody
    public String testReceiveArrayThree(@RequestBody Integer[] array) {
        Logger logger = LoggerFactory.getLogger(TestHandler.class);
        for (Integer number:array) {
            logger.info("number="+number);
        }
        return "target";
    }

3.前端请求后端报错

4.原因：SpringMVC配置文件的mvc命名空间错误

原来：

修改后：

 错误千万条，同个报错可能由多个原因造成的，还有可能的原因：

扫描二维码关注公众号，回复： 15190248 查看本文章

1.没有导包jackson

        <!-- Spring 进行 JSON 数据转换依赖 -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
        </dependency>

2.contentType不符合

3.前端请求添加了dataType: "json"，