htmlunit を使用してウェブページを解析したいのですが、コードを実行しているときにエラーが発生します。
import java.net.URL;
import java.util.List;
import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlImage;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
public class scrapImage {
public static void main(String[] args) throws Exception {
URL url = new URL("http://www.google.com");
//WebClient webClient = new WebClient(Opera);
WebClient webClient = new WebClient();
HtmlPage currentPage = (HtmlPage) webClient.getPage(url);
//get list of all divs
final List<?> images = currentPage.getByXPath("//img");
for (Object imageObject : images) {
HtmlImage image = (HtmlImage) imageObject;
System.out.println(image.getSrcAttribute());
} //webClient.closeAllWindows(); } }
}
}
エラーメッセージ:
Exception in thread "main" java.net.UnknownHostException: www.google.com
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:196)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:377)
at java.net.Socket.connect(Socket.java:530)
at java.net.Socket.connect(Socket.java:480)
at java.net.Socket.<init>(Socket.java:377)
at java.net.Socket.<init>(Socket.java:251)
at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80)
at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122)
at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)
at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)
at com.gargoylesoftware.htmlunit.HttpWebConnection.getResponse(HttpWebConnection.java:97)
at com.gargoylesoftware.htmlunit.WebClient.loadWebResponseFromWebConnection(WebClient.java:1430)
at com.gargoylesoftware.htmlunit.WebClient.loadWebResponse(WebClient.java:1388)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:325)
at com.gargoylesoftware.htmlunit.WebClient.getPage(WebClient.java:386)
at htmlunit.scrapImage.main(scrapImage.java:16)
上記の例外の解決策を教えてください。