微信小程序?qū)崿F(xiàn)上傳圖片功能

<view class="weui-cell"> 
 <view class="weui-cell__bd"> 
 <view class="weui-uploader"> 
 <view class="weui-uploader__hd"> 
 <view class="weui-uploader__title">營業(yè)執(zhí)照</view> 
 <view class="weui-uploader__info">{{imageList.length}}/{{count[countIndex]}}</view> 
 </view> 
 <view class="weui-uploader__bd"> 
 <view class="weui-uploader__files"> 
 <block wx:for="{{imageList}}" wx:for-item="image"> 
 <view class="weui-uploader__file"> 
 <image class="weui-uploader__img" src="{{image}}" data-src="{{image}}" bindtap="previewImage"></image> 
 </view> 
 </block> 
 </view> 
 <view class="weui-uploader__input-box"> 
 <view class="weui-uploader__input" bindtap="chooseImage"></view> 
 </view> 
 </view> 
 </view> 
 </view> 
</view> 

chooseImage: function () { 
 var that = this; 
 console.log('aaaaaaaaaaaaaaaaaaaa') 
 
 wx.chooseImage({ 
 count: this.data.count[this.data.countIndex], 
 success: function (res) { 
 console.log('ssssssssssssssssssssssssss') 
 //緩存下 
 wx.showToast({ 
 title: '正在上傳...', 
 icon: 'loading', 
 mask: true, 
 duration: 2000, 
 success: function (ress) { 
 console.log('成功加載動畫'); 
 } 
 }) 
 
 console.log(res) 
 that.setData({ 
 imageList: res.tempFilePaths 
 }) 
 //獲取第一張圖片地址 
 var filep = res.tempFilePaths[0] 
 //向服務(wù)器端上傳圖片 
 // getApp().data.servsers,這是在app.js文件里定義的后端服務(wù)器地址 
 wx.uploadFile({ 
 url: getApp().data.servsers + '/weixin/wx_upload.do', 
 filePath: filep, 
 name: 'file', 
 formData: { 
 'user': 'test' 
 }, 
 success: function (res) { 
 console.log(res) 
 console.log(res.data) 
 var sss= JSON.parse(res.data) 
 var dizhi = sss.dizhi; 
 //

//獲取當前日期時間的string類型用于文件名防重復(fù) 
 public String dates(){ 
 Date currentTime = new Date(); 
 SimpleDateFormat formatter = new SimpleDateFormat("yyyyMMddHHmmss"); 
 String dateString = formatter.format(currentTime); 
 return dateString; 
 } 
 @RequestMapping("wx_upload.do") 
 public void uploadPicture(HttpServletRequest request, HttpServletResponse response,PrintWriter writer) throws Exception { 
 System.out.println("進入get方法！"); 
 //獲取從前臺傳過來得圖片 
 MultipartHttpServletRequest req =(MultipartHttpServletRequest)request; 
 MultipartFile multipartFile = req.getFile("file"); 
 //獲取圖片的文件類型 
 String houzhu=multipartFile.getContentType(); 
 int one = houzhu.lastIndexOf("/"); 
 System.out.println(houzhu.substring((one+1),houzhu.length())); 
 System.out.println(multipartFile.getName()); 
 //根據(jù)獲取到的文件類型截取出圖片后綴 
 String type=houzhu.substring((one+1),houzhu.length()); 
 System.out.println(multipartFile.getContentType()); 
 
 String filename; 
 // request.getRealPath獲取我們項目的根地址在加上我們要保存的地址 
 String realPath = request.getRealPath("/upload/wximg/"); 
 try { 
 File dir = new File(realPath); 
 if (!dir.exists()) { 
 dir.mkdir(); 
 } 
 //獲取到當前的日期時間用戶生成文件名防止文件名重復(fù) 
 String filedata=this.dates(); 
 //生成一個隨機數(shù)來防止文件名重復(fù) 
 int x=(int)(Math.random()*1000); 
 filename="zhongshang"+x+filedata; 
 System.out.println(x); 
 將文件的地址和生成的文件名拼在一起 
 File file = new File(realPath,filename+"."+type); 
 multipartFile.transferTo(file); 
 //將圖片在項目中的地址和isok狀態(tài)儲存為json格式返回給前臺，由于公司項目中沒有fastjson只能用這個 
 JSONObject jsonObject=new JSONObject(); 
 jsonObject.put("isok",1); 
 jsonObject.put("dizhi","/upload/wximg/"+filename+"."+type); 
 
 writer.write(jsonObject.toString()); 
 } catch (IOException e) { 
 e.printStackTrace(); 
 } catch (IllegalStateException e) { 
 e.printStackTrace(); 
 } 
}