我遇到了以下源代码的问题:
import com.gargoylesoftware.htmlunit.BrowserVersion;
import com.gargoylesoftware.htmlunit.NicelyResynchronizingAjaxController;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.WebRequest;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import java.net.URL;
/**
* Created by Boris on 14-1-2.
*/
public class Parser {
public static void main(String[] args) throws Exception {
WebClient webClient = new WebClient(BrowserVersion.FIREFOX_17);
webClient.setAjaxController(new NicelyResynchronizingAjaxController());
WebRequest request = new WebRequest(new URL("http://oddsportal.com"));
HtmlPage page = webClient.getPage(request);
int i = webClient.waitForBackgroundJavaScript(1000);
while (i > 0)
{
i = webClient.waitForBackgroundJavaScript(1000);
if (i == 0)
{
break;
}
synchronized (page)
{
System.out.println("wait");
page.wait(500);
}
}
webClient.getAjaxController().processSynchron(page, request, false);
System.out.println(page.asXml());
}
}
这是错误消息:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/http/pool/ConnPoolControl
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:792)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.gargoylesoftware.htmlunit.HttpWebConnection.createHttpClient(HttpWebConnection.java:557)
at com.gargoylesoftware.htmlunit.HttpWebConnection.getHttpClient(HttpWebConnection.java:518)
at com.gargoylesoftware.htmlunit.HttpWebConnection.getResponse(HttpWebConnection.java:155)
at com.gargoylesoftware.htmlunit.WebClient.loadWebResponseFromWebConnection(WebClient.java:1486)
at com.gargoylesoftware.htmlunit.WebClient.loadWebResponse(WebClient.java:1403)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:305)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:390)
at DIIParser.Parser.main(Parser.java:22)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)
Caused by: java.lang.ClassNotFoundException: org.apache.http.pool.ConnPoolControl
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 25 more
我阅读了很多关于这个主题的内容,包括浏览器版本到WebClient,切换到org.apache.httpcomponents的旧版本4.2,尝试按照另一个主题中的说明生成HtmlPage,但没有任何帮助。我想要的只是加载一个特定的页面并等待javascript执行,之后用jsoup解析它。提前感谢您的帮助!
此致 鲍里斯
答案 0 :(得分:0)
虽然你还没有解释你到目前为止所做的工作以获得该错误,但我猜你还没有导入适当的库。确保导入所有 HTMLUnit发行版中的库。
您可以在以下问题中查看如何在Eclipse中执行此操作,也许它可以提供帮助: How to setup HtmlUnit in an Eclipse project?
顺便说一句,没有必要切换到任何旧版本。只需导入库就可以了。