最近在做微信小程式圖片上傳，將程式碼上傳，造福後來人，廢話不多說，貼程式碼：

微信小程式端

  chooseImage(){
    wx.chooseImage({
      success: function (res) {
        var tempFilePaths = res.tempFilePaths
        wx.uploadFile({
          url: 'http://127.0.0.1:8888/pesss/weChat/uploadImage.do', 
          filePath: tempFilePaths[0],
          name: 'file',
          formData: {
            'user': 'test'
          },
          success: function (res) {
            var data = res.data
            //do something
          },fail:function(err){
            console.log(err)
          }
        })
      }
    })
  }
 

java 端：

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
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.File;
import java.io.IOException;

@Controller
public class ImageTestWebchatController {

    @RequestMapping(value = "/weChat/uploadImage", method = { RequestMethod.POST,RequestMethod.GET})
    public ModelAndView uploadImage(HttpServletRequest request, HttpServletResponse response) throws IOException {
        System.out.println("進入get方法！");

        MultipartHttpServletRequest req =(MultipartHttpServletRequest)request;
        MultipartFile multipartFile =  req.getFile("file");

        String realPath = "F:/image";
        try {
            File dir = new File(realPath);
            if (!dir.exists()) {
                dir.mkdir();
            }
            File file  =  new File(realPath,"aaa.jpg");
            multipartFile.transferTo(file);
        } catch (IOException e) {
            e.printStackTrace();
        } catch (IllegalStateException e) {
            e.printStackTrace();
        }
        return null;
    }

}
 

Java端的返回引數就自己拼寫吧，檔案路徑、名稱可以自行命名 ，因為是測試，這裡就不寫全了。

如有問題，請加入微信小程式開發群：563752274，答案：Tony