通过jQuery AJAX从远程URL检索JSON数据 [英] Retrieve JSON data from remote URL via jQuery AJAX

问题描述

我正在使用以下代码从URL获取数据.

I am using following code to get the data from URL.

$.ajax({
    url: 'http://183.77.251.173:90/api/function/getprice.aspx?code=1301&length=3M',
    success: function (data) {
        alert(data.results[0].address_components[0].long_name);
    },
    error: function (jqXHR, exception) {
        alert(jqXHR.status);
    }

但是它将引发错误，状态代码为0.我不知道这是什么原因?我也尝试设置了crossDomian:true，但是它仍然抛出相同的错误.

However it throws an error with status code of 0. I don't know what the reason is for this? I tried to set crossDomian:true also but it still throws same error.

我还将URL修改为http://www.google.com，该URL还返回了错误状态代码0.为什么?是什么原因?从远程URL获取数据的正确方法是什么?

I also modified the URL to http://www.google.com which also returns the error status code of 0. Why? What is the reason? What is the correct way to get the data from a remote URL?

推荐答案

除非使用JSONP或CORS，否则您无法发出跨域请求.这些资源的可用性将取决于您从中请求信息的域的API.

You cannot make a cross domain request unless you're using JSONP or CORS. The availability of those will depend on the API of the domain you are requesting information from.

这是现代浏览器的一项安全功能，称为相同起源政策.

This is a security feature of modern browsers known as the Same Origin Policy.

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