uview2中的上传文件需要配合着自己后端的上传的代码

uview2 代码：

uploadFilePromise(url) {
				return new Promise((resolve, reject) => {
					// 后续自己封装
					let a = uni.uploadFile({
						//自己的请求路径
						url: that.$baseURL + '/uploadAvater', 
						//上传的文件
						filePath: that.userInfo.avatarUrl,
						name: 'file',
						//自己的请求头内容
						header: {
							Authorization: uni.getStorageSync("token")
						},
						success: (res) => {
							setTimeout(() => {
								resolve(res.data.data)
								let res = JSON.parse(uploadFileRes.data);
								that.userInfo.avatarUrl = res.data;
							}, 1000)
						}
					});
				})
			},

java 端（若依前后端分离）接口代码：

public AjaxResult uploadAvater(MultipartFile file){
        HttpServletRequest request = ServletUtils.getRequest();
        StringBuffer url = request.getRequestURL();
        String contextPath = request.getServletContext().getContextPath();
        String urlInfo = url.delete(url.length() - request.getRequestURI().length(), url.length()).append(contextPath).toString();

        try
        {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String urlFinal = urlInfo + fileName;
            AjaxResult ajax = AjaxResult.success();
            ajax.put("url", urlFinal);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return  AjaxResult.success(ajax.get("fileName"));
        }
        catch (Exception e)
        {
            return AjaxResult.error(e.getMessage());
        }

    }