Jquery jsonp响应错误 - 未调用回调 [英] Jquery jsonp response error - Callback was not called
问题描述
我正在尝试从其他域获取一些信息，该域只允许jsonp调用 - 其他域名被拒绝。如何获取内容而不是执行？因为我得到了错误的回应。我不需要执行它，我只需要在我的脚本中。在任何格式（响应是json但js不理解它）。
我不能影响该域名，因此无法改变该方面的内容。
这是我的代码：
I'm trying to get some information from a different domain, the domain allows only jsonp call - others get rejected. How can I get the content instead of execution? Because I get an error in response. I don't need to execute it, I just need it in my script. In any format (the response is json but js doesn't understand it). I can't affect on that domain so it's impossible to change something on that side. Here's my code:
$.ajax({
url: url + '?callback=?',
crossDomain: true,
type: "POST",
data: {key: key},
contentType: "application/json; charset=utf-8;",
async: false,
dataType: 'jsonp',
jsonp: 'callback',
jsonpCallback: 'jsonpCallback',
error: function(xhr, status, error) {
console.log(status + '; ' + error);
}
});
window.jsonpCallback = function(response) {
console.log('callback success');
};
推荐答案
您的<$ c $存在一些问题c> $。ajax 致电。
$.ajax({
url: url + '?callback=?',
// this is not needed for JSONP. What this does, is force a local
// AJAX call to accessed as if it were cross domain
crossDomain: true,
// JSONP can only be GET
type: "POST",
data: {key: key},
// contentType is for the request body, it is incorrect here
contentType: "application/json; charset=utf-8;",
// This does not work with JSONP, nor should you be using it anyway.
// It will lock up the browser
async: false,
dataType: 'jsonp',
// This changes the parameter that jQuery will add to the URL
jsonp: 'callback',
// This overrides the callback value that jQuery will add to the URL
// useful to help with caching
// or if the URL has a hard-coded callback (you need to set jsonp: false)
jsonpCallback: 'jsonpCallback',
error: function(xhr, status, error) {
console.log(status + '; ' + error);
}
});
你应该这样打电话给你的网址：
You should be calling your url like this:
$.ajax({
url: url,
data: {key: key},
dataType: 'jsonp',
success: function(response) {
console.log('callback success');
},
error: function(xhr, status, error) {
console.log(status + '; ' + error);
}
});
JSONP 不是 JSON。 JSONP实际上只是在< head> 中添加脚本标记。响应需要是一个包含函数调用的JavaScript文件，其中JSON数据作为参数。
JSONP is not JSON. JSONP is actually just adding a script tag to your <head>. The response needs to be a JavaScript file containing a function call with the JSON data as a parameter.
JSONP是服务器需要支持的东西。如果服务器没有正确响应，则无法使用JSONP。
JSONP is something the server needs to support. If the server doesn't respond correctly, you can't use JSONP.
请阅读文档： http://api.jquery.com/jquery.ajax/
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