org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'multipart/form-data;bounda

今天在编写SpringBoot 文件上传遇到这样的错误：org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'multipart/form-data;bounda

特此记录下：

错误的Controller 代码：

@ApiOperation(httpMethod = "POST", value = "文件块上传")
	@RequestMapping(value = "/upload", method = { RequestMethod.POST })
	@ResponseBody
	public Result upload(
			@RequestBody @ApiParam(name = "文件块对象", value = "表单对象")ChunkInfoModel         
            entity, HttpServletRequest request, HttpServletResponse response) {

			UploadFileCallback callback = new UploadFileCallback(entity, "upload", config.getLocation());
			Future<Result> result = this.uploadExecutor.submit(callback);
			try {
				return result.get();
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				log.error(e.getMessage());
				e.printStackTrace();
			} catch (ExecutionException e) {
				// TODO Auto-generated catch block
				log.error(e.getMessage());
				e.printStackTrace();
			}
		return Result.ok("文件块上传成功");
	}

正确的Controoler 代码：

@ApiOperation(httpMethod = "POST", value = "文件块上传")
	@RequestMapping(value = "/upload", method = { RequestMethod.POST })
	@ResponseBody
	public Result upload(
			ChunkInfoModel entity,
			HttpServletRequest request, HttpServletResponse response) {

			UploadFileCallback callback = new UploadFileCallback(entity, "upload", config.getLocation());
			Future<Result> result = this.uploadExecutor.submit(callback);
			try {
				return result.get();
			} catch (InterruptedException e) {
				// TODO Auto-generated catch block
				log.error(e.getMessage());
				e.printStackTrace();
			} catch (ExecutionException e) {
				// TODO Auto-generated catch block
				log.error(e.getMessage());
				e.printStackTrace();
			}
		return Result.ok("文件块上传成功");
	}

 原因：首先你在  multipart/form-data 就不能使用 @RequestBody

@RequestBody 的用法：

 1. 该注解用于读取Request请求的body部分数据，使用系统默认配置的HttpMessageConverter进行解析，然后把相应的数据绑定到要返回的对象上；

  2. 再把HttpMessageConverter返回的对象数据绑定到 controller中方法的参数上。

springboot  默认配置核心代码，涉及请求request数据转换配置：

总结：RequestBody 支持的请求方式和内容类型