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multipartrequest

admin 11月 12, 2020 0

描述
Android端使用okhttp,后台接口springmvc，当遇到一个功能模块，上传文件是非必须的条件时，在只传递字符串参数，不带files时报错：”The current request is not a multipart request”

错误代码：

("release")
public Result (@RequestParam("params") String params,
			@RequestParam(value = "files", required = false) MultipartFile[] files) {
      }

原因显而易见，未传递文件信息。解决办法，判断请求，从request中获取files

("release")
public Result updateUserInfo(@RequestParam("params") String params, HttpServletRequest request) {
    MultipartFile file = null;
    if (request instanceof MultipartHttpServletRequest) {
      file = ((MultipartHttpServletRequest) request).getFile("files");
    }
  }