angularjs图片上传和预览
思路是从file中读取base64
Module.controller('controlName', ['$scope', '$http', function($scope, $http) {$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);$http({method: 'post',url: '/comm/test-upload.php?action=success',data:data,headers: {'Content-Type': undefined},transformRequest: angular.identity}).success(function(data) {if (data.result_code == 'SUCCESS') {$scope.form.image[data.guid] = data.result_value;$scope.thumb[data.guid].status = 'SUCCESS';console.log($scope.form)}if(data.result_code == 'FAIL'){console.log(data)}})};$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$http({method: 'post',url: '/comm/test.php',data:$scope.form,}).success(function(data) {console.log(data); })};}]);
