📄 nn_browsedfscontent.jsp

📁 hadoop:Nutch集群平台

💻 JSP

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<%@ page  contentType="text/html; charset=UTF-8"  import="javax.servlet.*"  import="javax.servlet.http.*"  import="java.io.*"  import="java.util.*"  import="org.apache.hadoop.dfs.*"  import="java.text.DateFormat"  import="java.net.InetAddress"  import="java.net.URLEncoder"%><%!  FSNamesystem fsn = FSNamesystem.getFSNamesystem();  public void redirectToRandomDataNode(HttpServletResponse resp) throws IOException {    String datanode = fsn.randomDataNode();    String redirectLocation;    String nodeToRedirect;    int redirectPort;    if (datanode != null) {      redirectPort = Integer.parseInt(datanode.substring(datanode.indexOf(':') + 1));      nodeToRedirect = datanode.substring(0, datanode.indexOf(':'));    }    else {      nodeToRedirect = fsn.getDFSNameNodeMachine();      redirectPort = fsn.getNameNodeInfoPort();    }    String fqdn = InetAddress.getByName(nodeToRedirect).getCanonicalHostName();    redirectLocation = "http://" + fqdn + ":" + redirectPort +                        "/browseDirectory.jsp?namenodeInfoPort=" +                        fsn.getNameNodeInfoPort() +                       "&dir=" + URLEncoder.encode("/", "UTF-8");    resp.sendRedirect(redirectLocation);  }%><html><title></title><body><%    redirectToRandomDataNode(response); %><hr><h2>Local logs</h2><a href="/logs/">Log</a> directory<hr><a href="http://lucene.apache.org/hadoop">Hadoop</a>, 2006.<br></body></html>

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