调用Ext.Ajax.request时收到错误请求(Getting bad request when calling Ext.Ajax.request)

 我在运行此代码时遇到了错误的请求 
 
Ext.Ajax.request({
           url: loginHostUri,
           method:'POST',
           headers:{
               'Accept':'application/x-www-form-urlencoded'
           },
           extraParams:{
               grant_type:'password',
               username:username,
               password:psswd,
               client_id: consumerKey,
               client_secret: consumerSecret
           },
           success: function(response){
               Ext.Msg.alert('Info',reponse);
           }
       });
 
 当我使用javascript debuger时，我收到错误消息“XMLHttpRequest无法加载”“Access-Control-Allow-Origin不允许使用Origin null”。 

Im getting a bad request when running this code
 
Ext.Ajax.request({
           url: loginHostUri,
           method:'POST',
           headers:{
               'Accept':'application/x-www-form-urlencoded'
           },
           extraParams:{
               grant_type:'password',
               username:username,
               password:psswd,
               client_id: consumerKey,
               client_secret: consumerSecret
           },
           success: function(response){
               Ext.Msg.alert('Info',reponse);
           }
       });
 
When i use the javascript debuger i get an error message "XMLHttpRequest cannot load " "Origin null is not allowed by Access-Control-Allow-Origin."

原文：https://stackoverflow.com/questions/13244780