我正在使用crawler4j开发一个grails应用程序。
我知道这是一个老问题,我偶然发现了solution here。
我尝试了提供的解决方案,但不知道在哪里保留另一个fetcher和mockssl java文件。
另外,我不确定在包含https:// ...
的网址的情况下如何调用这两个类提前致谢。
答案 0 :(得分:0)
解决方案运行良好。也许你有一些问题要推断出放置代码的位置。以下是我如何使用它:
创建抓取工具时,您的主要课程中会出现类似这样的内容,如official documentation所示:
public class Controller {
public static void main(String[] args) throws Exception {
CrawlConfig config = new CrawlConfig();
config.setCrawlStorageFolder(crawlStorageFolder);
/*
* Instantiate the controller for this crawl.
*/
PageFetcher pageFetcher = new MockSSLSocketFactory(config);
RobotstxtConfig robotstxtConfig = new RobotstxtConfig();
RobotstxtServer robotstxtServer = new RobotstxtServer(robotstxtConfig, pageFetcher);
CrawlController controller = new CrawlController(config, pageFetcher, robotstxtServer);
....
在这里使用MockSSLSocketFactory,其定义如您发布的链接所示:
public class MockSSLSocketFactory extends PageFetcher {
public MockSSLSocketFactory (CrawlConfig config) {
super(config);
if (config.isIncludeHttpsPages()) {
try {
httpClient.getConnectionManager().getSchemeRegistry().unregister("https");
httpClient.getConnectionManager().getSchemeRegistry()
.register(new Scheme("https", 443, new SimpleSSLSocketFactory()));
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
如您所见,这里使用的是SimpleSSLSocketFactory类。这可以定义为链接示例中显示的内容:
public class SimpleSSLSocketFactory extends SSLSocketFactory {
public SimpleSSLSocketFactory() throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException,
UnrecoverableKeyException {
super(trustStrategy, hostnameVerifier);
}
private static final X509HostnameVerifier hostnameVerifier = new X509HostnameVerifier() {
@Override
public void verify(String host, SSLSocket ssl) throws IOException {
// Do nothing
}
@Override
public void verify(String host, String[] cns, String[] subjectAlts) throws SSLException {
// Do nothing
}
@Override
public boolean verify(String s, SSLSession sslSession) {
return true;
}
@Override
public void verify(String arg0, java.security.cert.X509Certificate arg1) throws SSLException {
// TODO Auto-generated method stub
}
};
private static final TrustStrategy trustStrategy = new TrustStrategy() {
@Override
public boolean isTrusted(java.security.cert.X509Certificate[] arg0, String arg1) throws CertificateException {
return true;
}
};
}
正如您所看到的,我只是从官方文档和您发布的链接中复制代码,但我希望看到所有内容对您来说更清晰。