AngularJS使用$http.post之后后台无法收到数据

AngularJS中的post与jQuery中post的区别

对比:

AngularJS：

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$http.post('/myserver', {username: 'shang'})
.success(function(){
    // some code
});

jQuery

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$.post('/myserver', {username: 'shang'}, function() {
    // some code
});

后台Express接受

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req.body.username // jq: 'shang'; ng: undefined

jq会把作为JSON对象的序列化, 而Angular不会

解决办法:

  • 引入jquery (不推荐)

  • 指定header

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    var myobject = {username: 'shang'};

    function ObjecttoParams(obj) {
        var p = [];
        for (var key in obj) {
            p.push(key + '=' + encodeURIComponent(obj[key]));
        }
        return p.join('&');
    }

    $http({
        method: 'POST',
        url: url,
        data: ObjecttoParams(myobject),
        headers: {'Content-Type':'application/x-www-form-urlencoded'}
    });

  • 使用 angular-post-fix

https://gist.github.com/JensRantil/5713606

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// Modifies $httpProvider for correct server communication (POST variable format)
angular.module('http-post-fix', [], function($httpProvider) {
  // This code is taken from http://victorblog.com/2012/12/20/make-angularjs-http-service-behave-like-jquery-ajax/
  
  // Use x-www-form-urlencoded Content-Type
  $httpProvider.defaults.headers.post['Content-Type'] = 'application/x-www-form-urlencoded;charset=utf-8';

  // Override $http service's default transformRequest
  $httpProvider.defaults.transformRequest = [function(data) {
    /**
     * The workhorse; converts an object to x-www-form-urlencoded serialization.
     * @param {Object} obj
     * @return {String}
     */ 
    var param = function(obj) {
      var query = '';
      var name, value, fullSubName, subValue, innerObj, i;
      
      for(name in obj) {
        value = obj[name];
        
        if(value instanceof Array) {
          for(i=0; i<value.length; ++i) {
            subValue = value[i];
            fullSubName = name + '[' + i + ']';
            innerObj = {};
            innerObj[fullSubName] = subValue;
            query += param(innerObj) + '&';
          }
        } else if(value instanceof Object) {
          for(subName in value) {
            subValue = value[subName];
            fullSubName = name + '[' + subName + ']';
            innerObj = {};
            innerObj[fullSubName] = subValue;
            query += param(innerObj) + '&';
          }
        } else if(value !== undefined && value !== null) {
          query += encodeURIComponent(name) + '=' + encodeURIComponent(value) + '&';
        }
      }
      
      return query.length ? query.substr(0, query.length - 1) : query;
    };
    
    return angular.isObject(data) && String(data) !== '[object File]' ? param(data) : data;
  }];
});

参考文档

文章若有纰漏请大家补充指正,谢谢~~

http://blog.xinshangshangxin.com SHANG殇