將其放在代碼開始處；它會閉上它的臟嘴：

LogFactory.getFactory().setAttribute("org.apache.commons.logging.Log", "org.apache.commons.logging.impl.NoOpLog");

java.util.logging.Logger.getLogger("com.gargoylesoftware.htmlunit").setLevel(Level.OFF); 

java.util.logging.Logger.getLogger("org.apache.commons.httpclient").setLevel(Level.OFF);

webClient = new WebClient(bv);

webClient.setCssEnabled(false);

webClient.setIncorrectnessListener(new IncorrectnessListener() {

    @Override

    public void notify(String arg0, Object arg1) {

        // TODO Auto-generated method stub

    }

});

webClient.setCssErrorHandler(new ErrorHandler() {

    @Override

    public void warning(CSSParseException exception) throws CSSException {

        // TODO Auto-generated method stub

    }

    @Override

    public void fatalError(CSSParseException exception) throws CSSException {

        // TODO Auto-generated method stub

    }

    @Override

    public void error(CSSParseException exception) throws CSSException {

        // TODO Auto-generated method stub

    }

});

webClient.setJavaScriptErrorListener(new JavaScriptErrorListener() {

    @Override

    public void timeoutError(HtmlPage arg0, long arg1, long arg2) {

        // TODO Auto-generated method stub

    }

    @Override

    public void scriptException(HtmlPage arg0, ScriptException arg1) {

        // TODO Auto-generated method stub

    }

    @Override

    public void malformedScriptURL(HtmlPage arg0, String arg1, MalformedURLException arg2) {

        // TODO Auto-generated method stub

    }

    @Override

    public void loadScriptError(HtmlPage arg0, URL arg1, Exception arg2) {

        // TODO Auto-generated method stub

    }

});

webClient.setHTMLParserListener(new HTMLParserListener() {

    @Override

    public void warning(String arg0, URL arg1, int arg2, int arg3, String arg4) {

        // TODO Auto-generated method stub

    }

    @Override

    public void error(String arg0, URL arg1, int arg2, int arg3, String arg4) {

        // TODO Auto-generated method stub

    }

});

webClient.setThrowExceptionOnFailingStatusCode(false);

webClient.setThrowExceptionOnScriptError(false);

Arsen Zahray的答案中的代碼有助于刪除HtmlUnit生成的幾乎所有日志。

但是進行一次編輯有助于將其全部刪除。使用：

java.util.logging.Logger.getLogger("com.gargoylesoftware").setLevel(Level.OFF); 

代替：

java.util.logging.Logger.getLogger("com.gargoylesoftware.htmlunit").setLevel(Level.OFF);