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; 
 } 
 
}