Java微信小程序上传图片文件 小程序+Java

小程序代码：

chooseImage(){ wx.chooseImage({ success: function (res) { var tempFilePaths = res.tempFilePaths wx.uploadFile({ url: 'http://127.0.0.1:8080/xxxx', // 后台上传文件url filePath: tempFilePaths[0], name: 'file', formData: { 'user': 'test' //需要传入的其它参数给后台 }, success: function (res) { var data = res.data //do something },fail:function(err){ console.log(err) } }) } }) }

Java代码：

`package com.core.controller;

import com.core.entity.Massage; import net.sf.json.JSONObject; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.multipart.MultipartHttpServletRequest; import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.*;

/**

• @ClassName WxUploadController

• @Description 微信文件上传

• @Author PengKe

• @Wx VIP694046220

• @Date 2018/9/19 0019 20:45

• @Version 1.0 **/ @Controller @RequestMapping(value = "wxUpload") public class WxUploadController {

  private static final Logger logger = LoggerFactory.getLogger(UploadController.class);

  @RequestMapping("/upload") public ModelAndView uploadImage(HttpServletRequest request, HttpServletResponse response) throws IOException { System.out.println("文件上传!");

       MultipartHttpServletRequest req =(MultipartHttpServletRequest)request;
       PrintWriter out = response.getWriter();
   Massage massage = new Massage();
       MultipartFile multipartFile =  req.getFile("file");
       String uId = request.getParameter("uId");//这就是获取微信传过来的其它参数
       String imgType = request.getParameter("imgType");
       System.out.println(uId+"---"+imgType);
  
       String realPath = request.getRealPath("/upload") + "/";
       try {
           File dir = new File(realPath);
           if (!dir.exists()) {
               dir.mkdir();
           }
           File file  =  new File(realPath,uId+"_"+imgType+".jpg");// 文件保存位置和文件名
           multipartFile.transferTo(file);
           massage.setCode(1);
           massage.setDatas("");
           massage.setMsg("上传成功");
       } catch (IOException e) {
           massage.setCode(0);
           massage.setDatas(e);
           massage.setMsg("上传失败");
           e.printStackTrace();
       } catch (IllegalStateException e) {
           massage.setCode(0);
           massage.setDatas(e);
           massage.setMsg("上传失败!");
           e.printStackTrace();
       }
   JSONObject jsonObject = JSONObject.fromObject(massage);
   out.print(jsonObject.toString());
   out.close();
       return null;
   }
  

}

可以了~

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