本篇主要讲解$http(config)的config中的tranformRequest项和transformResponse项
1. transformRequest:
$http({transformRequest: function(data){//对前台发送的data进行处理 return data}})
这个在测试的时候遇到了很大的问题.只要经过transformRequest函数处理,哪怕是不做任何处理,node后台都会报错,php后台也报同样的错,so,angular的这部分是有bug的.
2. transformResponse:
$http({transformResponse: function(data){//对后台返回的data进行处理 return data}})
demo:
html:
<!DOCTYPE html><html ng-app = 'HttpGet'><head><title>18.4 $http(2)</title><meta charset="utf-8"><script src="angular.js"></script><script src="script.js"></script></head><body><div ng-controller = "dataController"><span>{{data}}</span></div><script>
//自己写了一个把字符串转换成json格式对象的方法
var $ = {};$.serialize = function(data){var arr1 = data.split('&');var jsonObj = {};for(var i=0; i<arr1.length; i++) {var arr2 = arr1[i].split('=');jsonObj[arr2[0]] = arr2[1];}return jsonObj;};</script></body></html>
js:
var jsonData = {name:"code_bunny"};var httpGet = angular.module('HttpGet',[]);httpGet.factory('getData',function($http,$q){return function(){var defer = $q.defer();$http({method:'post',url:'/api/user',data: jsonData,headers: {'Authorization':'code_bunny'},// transformRequest:function(data){//console.log(data === jsonData);//return data// },
//得到的数据其实是'name=code_bunny&age=3'transformResponse:function(data){
//通过$.serialize方法转换后,得到json格式的对象,然后获取name属性的值return $.serialize(data)['name']}}).success(function(data,status,headers,config){defer.resolve(data);}).error(function(data,status,headers,config){defer.reject(data)});return defer.promise}});httpGet.controller('dataController',function($scope,getData){$scope.data = getData()});
除了在$http(config)里配置,还可以通过$httpProvider里进行全局配置:
httpGet.config(function($httpProvider){$httpProvider.defaults.transformResponse=function(data){return $.serialize(data)['name']}});
nodejs: (这里用的是最新版的express,需要另外安装加载body-parser模块,具体使用参考:/expressjs/body-parser)
var express = require('express');var bodyParser = require('body-parser');var app = express();// parse application/x-www-form-urlencodedapp.use(bodyParser.urlencoded({ extended: false }));// parse application/jsonapp.use(bodyParser.json());app.use(express.static(__dirname+''));var data = "name=code_bunny&age=3";app.post('/api/user',function(req,res){console.log(req.body);
res.send(data)
}); app.listen(3000);
完整代码路径:/OOP-Code-Bunny/angular/tree/master/OREILLY/18.4%20%24http(2)
