javascript 无法对“XMLHttpRequest”执行“发送”
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Failed to execute 'send' on 'XMLHttpRequest'
提问by Kyu_
I'm working on a Cordova application which is using ajax. My problem is that in debug, the app is working. But when I build a release, I got the error :
我正在开发一个使用 ajax 的 Cordova 应用程序。我的问题是在调试中，应用程序正在运行。但是当我构建一个版本时，我收到了错误：
{"readyState":0,"status":0,"statusText":"NetworkError: Failed to execute 'send' on 'XMLHttpRequest': Failed to load 'https://sub.domain.tld'."}
I don't understand from where is it coming. I added required lines to the res/xml/config.xml
我不明白它从哪里来。我将所需的行添加到 res/xml/config.xml
<access origin="*" />
<access uri="*" subdomains="true" />
<feature name="http://api.phonegap.com/1.0/network"/>
And the permission INTERNET in the AndroidManifest. But the error is still happening...
以及AndroidManifest 中的INTERNET 权限。但错误仍在发生......
And oh, here is my ajax call:
哦，这是我的 ajax 调用：
jQuery.support.cors = true;
$.ajax(
{
accepts: {
xml: "text/xml; charset=ISO-8859-1",
text: "text/plain; charset=ISO-8859-1"
}
, converters: {
"text xml": jQuery.parseXML
}
, type: "POST"
//, contentType: "text/xml; charset=ISO-8859-1"
, contentType : "application/x-www-form-urlencoded; charset=iso-8859-1"
, url: address
, async: false
, cache: false
, crossDomain: false
, data: msg
, dataType: "text"
, global: false
, ifModified: false
, username: this.params.server.login
, password: this.params.server.pass
, timeout: 500000
, beforeSend: function(jqXHR) {
jqXHR.overrideMimeType('text/xml;charset=iso-8859-1');
jqXHR.setRequestHeader("Access-Control-Allow-Origin", "*");
jqXHR.setRequestHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
jqXHR.setRequestHeader("Access-Control-Allow-Methods","POST, GET, OPTIONS, DELETE, PUT, HEAD");
}
}
)
Hope you'll be able to help me find a solution.
希望你能帮我找到解决办法。
回答by jonas
The jQuery documentationstates:
在jQuery文档状态：
Returning false in the beforeSend function will cancel the request
在 beforeSend 函数中返回 false 将取消请求
Since your beforeSendfunction doesn't have a return statement it will return undefinedwhich is falsy. I assume that cancels your request (even though I didn't test it). Try returning trueat the end of your beforeSendfunction.
由于您的beforeSend函数没有 return 语句，它将返回undefinedfalse。我认为这会取消您的请求（即使我没有对其进行测试）。尝试true在beforeSend函数结束时返回。
