Nodejs+angularjs结合multiparty实现多图片上传的示例代码

npm install multiparty --save npm install fs --save 

const express = require('express')const multiparty = require('multiparty');const fs = require('fs');const router = express.Router()；router.post('/uploadImg', function (req, res,next) { //生成multiparty对象，并配置上传目标路径 var form = new multiparty.Form({ uploadDir: './public/uploads/',//路径需要对应自己的项目更改 /*设置文件保存路径 */ encoding: 'utf-8', /*编码设置 */ maxFilesSize: 20000 * 1024 * 1024, /*设置文件最大值 20MB */ keepExtensions: true, /*保留后缀*/ });  //上传处理 form.parse(req, function(err, fields, files) {  var filesTmp = JSON.stringify(files, null, 2);  console.log(files);    function isType(str) {   if (str.indexOf('.') == -1) {    return '-1';   } else {    var arr = str.split('.');    return arr.pop();   }  }    if (err) {   console.log('parse error: ' + err);  } else {  var inputFile = files.image[0];  var uploadedPath = inputFile.path;  var type = isType(inputFile.originalFilename);  /*var dstPath = './public/files/' + inputFile.originalFilename;//真实文件名*/  var name = new Date().getTime() + '.' + type; /*以上传的时间戳命名*/  var dstPath = './public/uploads/' + name; /*路径需要对应自己的项目更改*/  console.log("type---------" + type);    if (type == "jpg" || type == "png" || type == "exe") {   console.log('可以上传');   //重命名为真实文件名   fs.rename(uploadedPath, dstPath, function(err) {    if (err) {     console.log('rename error: ' + err);    } else {     console.log('上传成功');    }   });   res.writeHead(200, { 'content-type': 'text/plain;charset=utf-8' });   var data = { "code": "1",'result_code':'SUCCESS', "msg": "上传成功", "results": [{ "name": name, "path": "uploads/" + name }] };   console.log(JSON.stringify(data))   res.end(JSON.stringify(data));      } else {    fs.unlink(uploadedPath, function(err) {    if (err) {    return console.error(err);    }    console.log("文件删除成功！");    });        console.log('不能上传' + inputFile.originalFilename);    res.writeHead(200, { 'content-type': 'text/plain;charset=utf-8' });    var data = { "code": 0, "msg": "上传失败" };    res.end(JSON.stringify(data));      }  }   });}); 

appIndex.controller('createImgs',function($rootScope,$scope,$http){  // 图片上传  $scope.reader = new FileReader();  //创建一个FileReader接口  $scope.form = {   //用于绑定提交内容，图片或其他数据    image:{},  };  $scope.thumb = {};   //用于存放图片的base64  $scope.thumb_default = {  //用于循环默认的‘加号'添加图片的框    1111:{}  };  $scope.img_upload = function(files) {    //单次提交图片的函数    $scope.guid = (new Date()).valueOf();  //通过时间戳创建一个随机数，作为键名使用    $scope.reader.readAsDataURL(files[0]); //FileReader的方法，把图片转成base64    $scope.reader.onload = function(ev) {      $scope.$apply(function(){        $scope.thumb[$scope.guid] = {          imgSrc : ev.target.result, //接收base64        }      });    };        var data = new FormData();   //以下为像后台提交图片数据    data.append('image', files[0]);    data.append('guid',$scope.guid);    $http({      method: 'post',      url: '/uploadImg',      data:data,      headers: {'Content-Type': undefined},      transformRequest: angular.identity    }).then(function successCallBack(response) {      if (response.data.result_code == 'SUCCESS') {        $scope.form.image[$scope.guid] = response.data.results[0].path;        $scope.thumb[$scope.guid].status = 'SUCCESS';        console.log($scope.form)      }      if(data.result_code == 'FAIL'){        console.log(data)      }    }, function errorCallback(response) {      console.log('网络错误')    })  };  $scope.img_del = function(key) {  //删除，删除的时候thumb和form里面的图片数据都要删除，避免提交不必要的    var guidArr = [];    for(var p in $scope.thumb){      guidArr.push(p);    }    delete $scope.thumb[guidArr[key]];    delete $scope.form.image[guidArr[key]];  };  $scope.submit_form = function(){  //图片选择完毕后的提交，这个提交并没有提交前面的图片数据，只是提交用户操作完毕后，到底要上传哪些，通过提交键名或者链接，后台来判断最终用户的选择,整个思路也是如此    $http({      method: 'post',      url: '/insertImg',      data:$scope.form,    }).success(function(data) {      console.log(data);      })  };  }) 

<div class="col-md-12 col-lg-7 fill">  <div class="form-group">    <h4>图片</h4>    <p>支持批量上传，支持照片的格式为<span class="label label-default">jpg & png</span> 。每张照片请不要超过<span class="label label-default">50M</span> 。为了在全屏下获得最好的效果，照片的分辨率最好大于<span class="label label-default">1920 x 1280</span> 。上传后的照片默认会按照它们的EXIF日期来排序。</p>    <div ng-repeat="item in thumb_default">      <!-- 这里之所以写个循环，是为了后期万一需要多个‘加号'框 -->      <label for="one-input">        <div class="add">          <span></span>          <span></span>        </div>      </label>      <input type="file" id="one-input" accept="image/*" file-model="images" onchange="angular.element(this).scope().img_upload(this.files)"/>    </div>  </div>  <div class="hr-text hr-text-left m-b-1 m-t-1">    <h6 class="text-white">      <strong>已上传</strong>    </h6>  </div>  <div ng-repeat="item in thumb" class="imgload">  <!-- 采用angular循环的方式，对存入thumb的图片进行展示 -->    <label>      ![]({{item.imgSrc}})    </label>    <div class="imgDel">      <span ng-if="item.imgSrc" ng-click="img_del($index)" class="glyphicon glyphicon-remove"></span>    </div>      </div>  </div> 

.fill .form-group label .add{  border:1px solid #666;  width: 100px;  height: 100px;  position: relative;  cursor: pointer;}.fill .form-group label .add span:nth-of-type(1){  width: 2px;  height: 50px;  display: block;  position: absolute;  left: 50%;  top: 50%;  margin-top: -25px;  margin-left: -1px;  background: #666;}.fill .form-group label .add span:nth-of-type(2){  background: #666;  width: 50px;  height: 2px;  display: block;  position: absolute;  left: 50%;  top: 50%;  margin-top: -1px;  margin-left: -25px;}.fill .form-group input{  display: none;}.fill .imgload{  display: inline-block;  margin: 7px;  position: relative;}.fill .imgload label img{  width: 200px;  height: 200px;}.fill .imgload .imgDel{  width:20px;  height: 20px;  background: #666;  border-radius: 50%;  position: absolute;  right: -10px;  top: -10px;  color: #ccc;  text-align: center;  line-height: 20px;  cursor: pointer;}