6

HtmlUnit を使用してサイトにログインし、テーブルからデータをダウンロードしています

コードを実行すると、java.lang.OutOfMemoryErrorそれ以上実行できませんでした。

以下は私のコードです：

WebClient webClient = new WebClient(BrowserVersion.INTERNET_EXPLORER_6);
webClient.getOptions().setJavaScriptEnabled(true);
webClient.getOptions().setCssEnabled(false);
webClient.getOptions().setRedirectEnabled(true);
webClient.getCookieManager().setCookiesEnabled(true);
                            webClient.getOptions().setPrintContentOnFailingStatusCode(false);
webClient.setAjaxController(new NicelyResynchronizingAjaxController());
webClient.getOptions().setTimeout(50000);
webClient.getOptions().setUseInsecureSSL(true);
webClient.getOptions().setPopupBlockerEnabled(true);

HtmlPage htmlPage=webClient.getPage(url);
Thread.sleep(200);
                            //~~~~~~~Log-In
HtmlTextInput uname=(HtmlTextInput)htmlPage.getFirstByXPath("//*[@id=\"username\"]");
uname.setValueAttribute("xxx");
HtmlPasswordInput upass=(HtmlPasswordInput)htmlPage.getFirstByXPath("//*[@id=\"password\"]");
upass.setValueAttribute("xxx");
HtmlSubmitInput submit=(HtmlSubmitInput)htmlPage.getFirstByXPath("//*[@id=\"login-button\"]/input");
htmlPage=(HtmlPage) submit.click();
Thread.sleep(200);
webClient.waitForBackgroundJavaScript(10000);
for (int i = 0; i < 250; i++) {
 if (!htmlPage.asText().contains("Loading...")) {
     break;
  }
    synchronized (htmlPage) {
     htmlPage.wait(500);
 }
}

System.out.println(htmlPage.asText());

そして以下はstackTraceです

java.lang.OutOfMemoryError: Java heap space
at net.sourceforge.htmlunit.corejs.javascript.Node.newString(Node.java:155)
at net.sourceforge.htmlunit.corejs.javascript.Node.newString(Node.java:151)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.createPropertyGet(IRFactory.java:1990)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformPropertyGet(IRFactory.java:968)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:106)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformPropertyGet(IRFactory.java:964)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:106)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformPropertyGet(IRFactory.java:964)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:106)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformFunctionCall(IRFactory.java:595)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:86)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformInfix(IRFactory.java:775)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:161)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformAssignment(IRFactory.java:368)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:152)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformExprStmt(IRFactory.java:488)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:149)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformBlock(IRFactory.java:406)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:82)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformIf(IRFactory.java:762)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:110)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformBlock(IRFactory.java:406)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:82)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformIf(IRFactory.java:762)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:110)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformBlock(IRFactory.java:406)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:82)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformIf(IRFactory.java:768)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:110)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformBlock(IRFactory.java:406)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transform(IRFactory.java:82)
at net.sourceforge.htmlunit.corejs.javascript.IRFactory.transformFunction(IRFactory.java:560)

ヒープメモリを割り当てるために catlina.sh ファイルに次の行を入れましたが、それでも同じエラーが発生します (私の RAM サイズは 2GB です)。

if [ -z "$LOGGING_MANAGER" ]; then
     JAVA_OPTS="$JAVA_OPTS -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager"
else
     JAVA_OPTS="$JAVA_OPTS $LOGGING_MANAGER"
fi

# Uncomment the following line to make the umask available when using the
# org.apache.catalina.security.SecurityListener
   JAVA_OPTS="$JAVA_OPTS -Dorg.apache.catalina.security.SecurityListener.UMASK=`umask`"
   JAVA_OPTS="$JAVA_OPTS  -Xms512m -Xmx2048m -XX:MaxPermSize=512m"
   JAVA_OPTS="-server -XX:+UseConcMarkSweepGC"
4

2 に答える 2

5

この$JAVA_OPTSをコードの最後の行に含めてください。コードが機能しますように

JAVA_OPTS="$JAVA_OPTS -server -XX:+UseConcMarkSweepGC"
于 2013-04-08T12:23:16.667 に答える
1

-XX:+HeapDumpOnOutOfMemoryErrorを設定してから、 Eclipse MATなどのツールを使用します。

于 2013-04-08T11:07:28.440 に答える