问题补充 安卓5，6，7 安卓最新版微信（8.0.15）基础库2.20.0 该现象发生率 100% 小程序使用wx.uploadFile上传图片到后端,接口调用成功，后端用的MultipartFile接收时候发现缺少boundary参数，后台报错：the request was rejected because no multipart boundary was found，出现的概率大概1% org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested exception is java.io.IOException: org.apache.tomcat.util.http.fileupload.FileUploadException: the request was rejected because no multipart boundary was found