Question

我第一次尝试HtmlUnit。我在Linux Mint 17.1上开发。我也是Java的新手。我安装了jenkins-htmlunit，我的java环境是java-7-openjdk-amd64。

我找到了以下示例：

import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlPage;

public class myClient {
    public static void main(String[] args) throws Exception {
        WebClient webClient = new WebClient();
        HtmlPage page = webClient.getPage("http://htmlunit.sourceforge.net");
        System.out.println(page.asXml());
    }    
}

但是，执行以下shell命令后：

javac -cp“/ usr / share / java / ”myClient.java导出 CLASSPATH = $ CLASSPATH：/ usr / share / java / java myClient

我收到以下错误：

线程“main”中的异常java.lang.NullPointerException at com.gargoylesoftware.htmlunit.javascript.SimpleScriptable.getPrototype（SimpleScriptable.java:247）在 com.gargoylesoftware.htmlunit.javascript.SimpleScriptable.makeScriptableFor（SimpleScriptable.java:217）在 com.gargoylesoftware.htmlunit.html.DomNode.getScriptObject（DomNode.java:790）在 com.gargoylesoftware.htmlunit.html.HtmlScript.setAndExecuteReadyState（HtmlScript.java:457）在 com.gargoylesoftware.htmlunit.html.HtmlScript $ 1.execute（HtmlScript.java:212）在 com.gargoylesoftware.htmlunit.html.HtmlScript.onAllChildrenAddedToPage（HtmlScript.java:238）在 com.gargoylesoftware.htmlunit.html.HTMLParser $ HtmlUnitDOMBuilder.endElement（HTMLParser.java:699）在org.apache.xerces.parsers.AbstractSAXParser.endElement（未知来源）at com.gargoylesoftware.htmlunit.html.HTMLParser $ HtmlUnitDOMBuilder.endElement（HTMLParser.java:657）在 org.cyberneko.html.HTMLTagBalancer.callEndElement（HTMLTagBalancer.java:1170）在 org.cyberneko.html.HTMLTagBalancer.endElement（HTMLTagBalancer.java:1072）在 org.cyberneko.html.filters.DefaultFilter.endElement（DefaultFilter.java:206）在 org.cyberneko.html.filters.NamespaceBinder.endElement（NamespaceBinder.java:330）在 org.cyberneko.html.HTMLScanner $ ContentScanner.scanEndElement（HTMLScanner.java:3116）在 org.cyberneko.html.HTMLScanner $ ContentScanner.scan（HTMLScanner.java:2083）在org.cyberneko.html.HTMLScanner.scanDocument（HTMLScanner.java:918）在 org.cyberneko.html.HTMLConfiguration.parse（HTMLConfiguration.java:499）在 org.cyberneko.html.HTMLConfiguration.parse（HTMLConfiguration.java:452）在org.apache.xerces.parsers.XMLParser.parse（未知来源）at com.gargoylesoftware.htmlunit.html.HTMLParser $ HtmlUnitDOMBuilder.parse（HTMLParser.java:901）在 com.gargoylesoftware.htmlunit.html.HTMLParser.parse（HTMLParser.java:350）在 com.gargoylesoftware.htmlunit.html.HTMLParser.parseHtml（HTMLParser.java:304）在 com.gargoylesoftware.htmlunit.DefaultPageCreator.createHtmlPage（DefaultPageCreator.java:134）在 com.gargoylesoftware.htmlunit.DefaultPageCreator.createPage（DefaultPageCreator.java:101）在 com.gargoylesoftware.htmlunit.WebClient.loadWebResponseInto（WebClient.java:449）在 com.gargoylesoftware.htmlunit.WebClient.getPage（WebClient.java:332）在 com.gargoylesoftware.htmlunit.WebClient.getPage（WebClient.java:389）在 com.gargoylesoftware.htmlunit.WebClient.getPage（WebClient.java:374） at myClient.main（myClient.java:8）

Answer 1

使用最新的快照构建时，这对我来说很好。请切换到最新快照（此页面上有一些有用的详细信息http://htmlunit.sourceforge.net/gettingLatestCode.html）。如果您没有特殊需求，最好使用最新的快照构建，因为我们正在根据用户反馈进行定期修复。

使用HtmlUnit时遇到多个错误WebClient.getPage

1 个答案: