PHP，jQuery Ajax和json通过跨域返回 [英] PHP, jQuery Ajax and json return over a cross domain

问题描述

我在一台服务器上有我的php编码页面，该页面返回json结果. php文件名为:getInfoData.php，返回结果如下.

I have my php coded page on one server that returns a json result. php file called: getInfoData.php and the return is as below.

  echo json_encode($v);

不，我可以使用$ .getJSON(??)来读取json并以相同的服务器名运行它，但是我需要将php页面的服务器名与调用它的js页面的服务器名不同.

No I can use $.getJSON(??) to read the json and run it all on the same sever fine, but I need the php page to be on a different sever than the js page calling it.

但是后来我得到跨域问题.

But then I get then when I do I get the cross domain issue.

所以我将代码更改为使用以下(jsonp):

So I changed the code to use the following (jsonp):

  $.ajax({
    url: 'FILE_LOCATION_ON_ANOTHER_SERVER',
    type: 'GET',
    crossDomain: true,
    dataType: 'jsonp',
    success: function() { console.log("Success"); },
    error: function() {console.log('Failed!'); }
});

但是我什么都看不到，我只能通过控制台获得以下信息:

but I do not see anything I just get the following with my console:

  http://www.THEURL.com/FOLDER/FILENAME.php?callback=jQuery171013088115444406867_1332256223342&_=1332256223343

和一条消息说失败了！.

and a message saying failed!.

我在做什么错，怎么办才能解决?

What am I doing wrong and how if at all can I fix this?

谢谢

推荐答案

JSONP实际上不是JSON.这有点黑客". JSONP实际上是一个JavaScript文件，可以下载并运行.

JSONP isn't actually JSON. It's a bit of a "hack". JSONP is actually a JavaScript file, that gets downloaded and ran.

在您的PHP页面中，应该为您传递一个callback参数.您需要在其中包装" JSON.它应该看起来像这样:

In your PHP page, you should be passed a callback parameter. You need to "wrap" your JSON in it. It should look like this:

func({json: data})

因此，您的PHP应该如下所示:

So, your PHP should look like this:

echo $_GET['callback'] . '(' . json_encode($v) . ')';

这篇关于PHP，jQuery Ajax和json通过跨域返回的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！