How to use ajax to obtain json data across domains

This time I will show you how to operate ajax cross-domain acquisition of json data. What are theprecautionsfor ajax cross-domain acquisition of json data. The following is a practical case, let's take a look.

Because my company’s project needs to callVideoAddress

1: When it is a link: directly search in the database in the player The address

2: When it is an external link: directly use window.location.href('the address searched in the database')

3 : When linking to H5: use Play

4: When linking to other websites, go to the third-party website to read json information and then put the json data as url in the player

When it is 4, a format error will occur when I use json

When using jsonp to solve cross-domain problems, It will appear that the return format cannot be received

, so I use

public static String analysisUrl(String url){ HttpURLConnection httpConnection = null; String output = ""; try { URL targetUrl = new URL(url); httpConnection = (HttpURLConnection) targetUrl.openConnection(); httpConnection.setDoOutput(true); httpConnection.setRequestMethod("GET"); httpConnection.setRequestProperty("Content-Type", "application/json"); InputStreamReader isr = new InputStreamReader(httpConnection .getInputStream(),"utf-8"); BufferedReader responseBuffer = new BufferedReader(isr); output = responseBuffer.readLine(); } catch (Exception e) { } finally { httpConnection.disconnect(); } return output; }

to pass a url in. This method will read the content of the website and return it,

So I use ajax to pass the url to this method at the front desk, and the return type is json

Use data.result.data name to get the json data in the url.

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

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