var data = {'wid':'0', 'praise' : '25'}; 
$http.post(url, data).success(function(result) { 
 // 
}); 

POST http://www.example.com HTTP/1.1 
Content-Type: application/json;charset=utf-8 
 
{'wid':'0','praise':'25'} 

$data = file_get_contents("php://input"); //获得原始输入流 

app.factory("Comment",function($http){
 return {
  get : function(commentFileUrl) {
   return $http({
    method: "GET",
    url: commentFileUrl,
    params: {R:Math.random()},
    headers: {'Cache-Control':'no-cache'}
   });
  },

  //保存一个评论
  save : function(toUrl,saveFileUrl,Data) {
   $http({
    method: "POST",
    url: toUrl,
    data: {saveUrl:saveFileUrl,commit:Data},
    headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
    transformRequest: function(obj) {
     var str = [];
     for (var p in obj) {
      str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
     }
     return str.join("&");
    }
   }).success(function(data){
    console.log("数据已保存！");
   }).error(function(data) {
    alert("数据保存失败，错误信息:" + JSON.stringify({data:data}));
   });
  }
 }
});
var updateClickRate={'wid':'0','click_rate':'87'};
Comment.save("php/updateWork.php","../userdata/work_content.json",JSON.stringify(updateClickRate));