微信小程序上传图片实例

<view class='user_head'>  <view>   <image src='{{ptuser.avatarUrl}}' bindtap='updateHead'></image>  </view>  <text>点击选择头像</text> </view>

// 更换头像 span style="font-size:18px;color:#FF0000;"> updateHead: function () {   var that = this   // 上传图片 获取路径   wx.chooseImage({    success: function (res) {     console.log('临时路径：' + res.tempFilePaths[0])       wx.uploadFile({        url: app.globalData.baseUrl + '/file/uploadFile',        filePath: res.tempFilePaths[0],        name: 'file',        success: function (result) {         console.log("返回路径：" + result.data)        }       })    },   })  },

package cn.helloxhs.moudle.common;  import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream;  import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse;  import org.apache.commons.fileupload.disk.DiskFileItem; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.multipart.commons.CommonsMultipartFile;  import cn.helloxhs.base.controller.BaseController;  /**  * 类说明  *  * @author 肖荷山  * @version 创建时间：2017年12月23日 上午11:14:27  */ @Controller @RequestMapping("/file") public class FileController extends BaseController {   @RequestMapping("/uploadFile")   @ResponseBody   public Object uploadFile(HttpServletResponse response, HttpServletRequest request, MultipartFile file) {     String realPath = request.getSession().getServletContext().getRealPath("/temp");     try {       CommonsMultipartFile cf = (CommonsMultipartFile) file;       DiskFileItem fi = (DiskFileItem) cf.getFileItem();       File f1 = fi.getStoreLocation();       InputStream ips = new FileInputStream(f1);       OutputStream ops = new FileOutputStream(realPath + "/" + "xhs.jpg");       byte[] b = new byte[1024];       int len;       try {         while ((len = ips.read(b)) != -1) {           ops.write(b, 0, len);         }       } catch (IOException e) {         e.printStackTrace();       } finally {         // 完毕，关闭所有链接         try {           ops.close();           ips.close();         } catch (IOException e) {           e.printStackTrace();         }       }      } catch (FileNotFoundException e) {       e.printStackTrace();     }     return realPath;   }  }