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尝试https://www.okcupid.com/login使用httpunit库登录时，以下代码成功执行。

但是，如果我扩展类以JFrame构建 UI，则执行失败。请求正常完成，POST但GET执行时请求失败HtmlPage page = wc.getPage(url)

在代码下方，我将两种情况的输出都放在了下面。

除非 Main 扩展 JFrame 否则有效

public class Main /* extends JFrame */ {
    static boolean isConnecting = false;
    public static void main(String[] args) {
        new Main();
    }

    public Main() {
        login();
    }

    public void login() {
        try {
            /* POST */
            WebClient wc = new WebClient();
            URL url = new URL("https://www.okcupid.com/login");
            WebRequest requestSettings = new WebRequest(url, HttpMethod.POST);
            requestSettings.setRequestBody("username=myLogin&password=myPassword&okc_api=1");
            Page redirectPage = wc.getPage(requestSettings);/* unique */
            Set<Cookie> cookies = wc.getCookieManager().getCookies();

            /*GET */
            wc = new WebClient();
            for (Cookie cookie : cookies) {
                wc.getCookieManager().addCookie(cookie);
            }
            HtmlPage page = wc.getPage(url);
            WebResponse response = page.getWebResponse();
            String content = response.getContentAsString();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Main 扩展 JFrame 时的输出

Connected to the target VM, address: '127.0.0.1:52571', transport: 'socket'
Apr 21, 2016 5:31:20 PM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify
WARNING: Obsolete content type encountered: 'application/x-javascript'.
Apr 21, 2016 5:31:20 PM com.gargoylesoftware.htmlunit.javascript.StrictErrorReporter runtimeError
SEVERE: runtimeError: message=[An invalid or illegal selector was specified (selector: '*,:x' error: Invalid selector: :x).] sourceName=[https://includes.okccdn.com/flat/js/vendor.min.js?v=7a3cb7237dd753a] line=[24] lineSource=[null] lineOffset=[0]
Exception in thread "main" java.lang.StackOverflowError
    at net.sourceforge.htmlunit.corejs.javascript.regexp.NativeRegExp.emitREBytecode(NativeRegExp.java:1311)
    at net.sourceforge.htmlunit.corejs.javascript.regexp.NativeRegExp.emitREBytecode(NativeRegExp.java:1281)
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    // (this repeats well over a few thousand times before finishing with exit code 1.
    at net.sourceforge.htmlunit.corejs.javascript.regexp.NativeRegExp.emitREBytecode(NativeRegExp.java:131
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Disconnected from the target VM, address: '127.0.0.1:52571', transport: 'socket'

Process finished with exit code 1

Main 不扩展 JFrame 时的输出

Connected to the target VM, address: '127.0.0.1:52635', transport: 'socket'
Apr 21, 2016 5:38:29 PM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify
WARNING: Obsolete content type encountered: 'application/x-javascript'.
Apr 21, 2016 5:38:30 PM com.gargoylesoftware.htmlunit.javascript.StrictErrorReporter runtimeError
SEVERE: runtimeError: message=[An invalid or illegal selector was specified (selector: '*,:x' error: Invalid selector: :x).] sourceName=[https://includes.okccdn.com/flat/js/vendor.min.js?v=7a3cb7237dd753a] line=[24] lineSource=[null] lineOffset=[0]
Apr 21, 2016 5:38:30 PM com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error
WARNING: CSS error: 'https://includes.okccdn.com/lang/en/version/219b51f028bbb87/globals.css' [3:9674] Error in style sheet. (Invalid token "@charset". Was expecting one of: <EOF>, <S>, <IDENT>, "<!--", "-->", ".", ":", "*", "[", <HASH>, <IMPORT_SYM>, <PAGE_SYM>, <MEDIA_SYM>, <FONT_FACE_SYM>, <ATKEYWORD>.)
Apr 21, 2016 5:38:30 PM com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error
WARNING: CSS error: 'https://includes.okccdn.com/lang/en/version/df13e6172aa8212/locals.css?set=home2015,flag_photo' [3:1512] Error in expression. (Invalid token " ". Was expecting one of: <NUMBER>, "inherit", <IDENT>, <STRING>, <HASH>, <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <RESOLUTION_DPI>, <RESOLUTION_DPCM>, <PERCENTAGE>, <DIMENSION>, <URI>, <FUNCTION>.)
Apr 21, 2016 5:38:30 PM com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error
WARNING: CSS error: 'https://includes.okccdn.com/lang/en/version/df13e6172aa8212/locals.css?set=home2015,flag_photo' [3:1543] Error in expression. (Invalid token " ". Was expecting one of: <NUMBER>, "inherit", <IDENT>, <STRING>, <HASH>, <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <RESOLUTION_DPI>, <RESOLUTION_DPCM>, <PERCENTAGE>, <DIMENSION>, <URI>, <FUNCTION>.)
Apr 21, 2016 5:38:30 PM com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error
WARNING: CSS error: 'https://includes.okccdn.com/lang/en/version/df13e6172aa8212/locals.css?set=home2015,flag_photo' [3:1566] Error in expression. (Invalid token " ". Was expecting one of: <NUMBER>, "inherit", <IDENT>, <STRING>, <HASH>, <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <RESOLUTION_DPI>, <RESOLUTION_DPCM>, <PERCENTAGE>, <DIMENSION>, <URI>, <FUNCTION>.)
Apr 21, 2016 5:38:30 PM com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error
WARNING: CSS error: 'https://includes.okccdn.com/lang/en/version/df13e6172aa8212/locals.css?set=home2015,flag_photo' [3:3949] Error in expression. (Invalid token " ". Was expecting one of: <NUMBER>, "inherit", <IDENT>, <STRING>, <HASH>, <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <RESOLUTION_DPI>, <RESOLUTION_DPCM>, <PERCENTAGE>, <DIMENSION>, <URI>, <FUNCTION>.)
Apr 21, 2016 5:38:30 PM com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error
WARNING: CSS error: 'https://includes.okccdn.com/lang/en/version/df13e6172aa8212/locals.css?set=home2015,flag_photo' [3:3982] Error in expression. (Invalid token " ". Was expecting one of: <NUMBER>, "inherit", <IDENT>, <STRING>, <HASH>, <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <RESOLUTION_DPI>, <RESOLUTION_DPCM>, <PERCENTAGE>, <DIMENSION>, <URI>, <FUNCTION>.)
Apr 21, 2016 5:38:30 PM com.gargoylesoftware.htmlunit.DefaultCssErrorHandler error
WARNING: CSS error: 'https://includes.okccdn.com/lang/en/version/df13e6172aa8212/locals.css?set=home2015,flag_photo' [3:4007] Error in expression. (Invalid token " ". Was expecting one of: <NUMBER>, "inherit", <IDENT>, <STRING>, <HASH>, <EMS>, <EXS>, <LENGTH_PX>, <LENGTH_CM>, <LENGTH_MM>, <LENGTH_IN>, <LENGTH_PT>, <LENGTH_PC>, <ANGLE_DEG>, <ANGLE_RAD>, <ANGLE_GRAD>, <TIME_MS>, <TIME_S>, <FREQ_HZ>, <FREQ_KHZ>, <RESOLUTION_DPI>, <RESOLUTION_DPCM>, <PERCENTAGE>, <DIMENSION>, <URI>, <FUNCTION>.)

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 and so on, and so forth
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<!DOCTYPE html>
    DESIRED HTML RESPONSE STRING
</html>
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// After connecting successfully, the following continues to output every 30 seconds
Apr 21, 2016 5:39:00 PM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify
WARNING: Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'https://1-instant.okcupid.com/instantevents?random=0.437989956299249', but got 'text/html'.
Apr 21, 2016 5:39:29 PM com.gargoylesoftware.htmlunit.IncorrectnessListenerImpl notify
WARNING: Expected content type of 'application/javascript' or 'application/ecmascript' for remotely loaded JavaScript element at 'https://2-instant.okcupid.com/instantevents?random=0.4299430644437371&server_seqid=0&server_gmt=1461274740', but got 'text/html'.
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1 回答 1

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我弄清楚了为什么会发生这种情况以及解决它的方法，但我仍然不知道如何使它在扩展 JFrame 时工作。

  1. 如果您使用 htmlunit 处理 URL 请求，请首先删除 JFrame 扩展。现在代码将执行但仍不启动 UI。

  2. 不要使用类的 JFrame 扩展，而是在需要扩展的部分创建一个新的 JFrame 实例。然后使用该 JFrame 实例来声明所有必要的属性和操作。

于 2016-04-26T15:55:00.623 回答