📄 webserveraglet.java
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package examples.http;/* * @(#)WebServerAglet.java * * 03L7246 (c) Copyright IBM Corp. 1996, 1998 * * The program is provided "as is" without any warranty express or * implied, including the warranty of non-infringement and the implied * warranties of merchantibility and fitness for a particular purpose. * IBM will not be liable for any damages suffered by you as a result * of using the Program. In no event will IBM be liable for any * special, indirect or consequential damages or lost profits even if * IBM has been advised of the possibility of their occurrence. IBM * will not be liable for any third party claims against you. */import com.ibm.aglet.*;import com.ibm.awb.misc.Encoding;import java.io.*;import java.net.URL;import java.util.Enumeration;/** * WebServerAglet is an aglet which behaves like WebServer. * Please enable the HTTP messaging feature in the configuration panel * Options -> Network Cofiguration -> Others. * If the aglet is successfully created, please try * <pre> * http://aglet.server:434/aglets/default/test/index.html * </pre> * in your web browser. The port number have to be same number on which * the aglet server is running. (434 by default) * * @version 1.00 $Date: 2001/07/28 06:34:21 $ * @author Mitsuru Oshima */public class WebServerAglet extends Aglet { static private final Encoding ENCODING = Encoding.getDefault(); static private final String ENCODING_JAVA = ENCODING.getJavaEncoding(); static private final String CHARSET_PAGE = ENCODING.getHTMLCharset(); static private String META_TAG = null; static { META_TAG = "<META HTTP-EQUIV=\"Content-Type\" CONTENT=\"text/html;"; if (CHARSET_PAGE != null) { META_TAG += " charset=" + CHARSET_PAGE; } META_TAG += "\">"; } String indexPage = null; // // If it's http request. // boolean handleHttpRequest(Message m, PrintWriter p) { System.out.println(m); if (m.sameKind("index.html") || m.sameKind("")) { p.println(indexPage); p.flush(); } else if (m.sameKind("next.html")) { p.println("<HTML>"); p.println("<HEAD>"); p.println(META_TAG); p.println("<TITLE>"); p.println("NEXT"); p.println("</TITLE>"); p.println("</HEAD>"); p.println("<BODY>"); p.println("<H1> Here is a list of proxies in <TT>" + getAgletContext().getHostingURL() + "</TT></H1>"); Enumeration e = getAgletContext().getAgletProxies(ACTIVE | INACTIVE); p.println("<PRE>"); while (e.hasMoreElements()) { AgletProxy proxy = (AgletProxy)e.nextElement(); try { p.println(proxy.getAgletInfo().toString()); } catch (Exception ex) { ex.printStackTrace(p); } } p.println("</PRE>"); p.println("</BODY>"); p.println("</HTML>"); p.flush(); m.sendReply("text/html"); } else if (m.sameKind("go")) { System.out.println((String)m.getArg("location")); String l = (String)m.getArg("location"); if (l.startsWith("atp:")) { l = l.substring(4); if (l.indexOf(':') < 0) { p.println("<HTML>"); p.println("<HEAD>"); p.println(META_TAG); p.println("<TITLE>"); p.println("ILLEGAL INPUT"); p.println("</TITLE>"); p.println("</HEAD>"); p.println("<BODY>"); p.println("<H1>"); p.println("Please specify port number. default = 434"); p.println("</H1>"); p.println("</BODY>"); p.println("</HTML>"); p.flush(); m.sendReply("text/html"); return true; } } try { p.println("<HTML>"); p.println("<HEAD>"); p.println(META_TAG); p.println("<TITLE>"); p.println("MOVING TO"); p.println("</TITLE>"); p.println("</HEAD>"); p.println("<BODY>"); p.println("<H1> Moving to...! </H1>"); String contextName = getAgletContext().getName(); if (contextName.equals("")) { contextName = "default"; } p.println("<a href= \"http:" + l + "/aglets/" + contextName + "/" + getAgletID() + "/index.html\" TARGET=_top> atp:" + l + " </a>"); p.println("Click above link to trace me! <BR>"); p.println("</BODY>"); p.println("</HTML>"); p.flush(); m.sendReply("text/html"); dispatch(new java.net.URL("atp:" + l)); } catch (IOException ex) { ex.printStackTrace(); } catch (RequestRefusedException ex) { ex.printStackTrace(); } } else { return false; } return true; } public boolean handleMessage(Message m) { // // This is just a temporary solution. // Object o = m.getArg("cgi-response"); PrintStream p = null; if (o != null && o instanceof OutputStream) { OutputStream os = (OutputStream)o; OutputStreamWriter osw = null; try { osw = new OutputStreamWriter(os, ENCODING_JAVA); } catch (UnsupportedEncodingException excpt) { osw = new OutputStreamWriter(os); } PrintWriter pw = new PrintWriter(osw); return handleHttpRequest(m, pw); } return true; } /* * index page */ void indexPage() { StringBuffer b = new StringBuffer(); b.append("<HTML>"); b.append("<HEAD>"); b.append(META_TAG); b.append("<TITLE>"); b.append("CGI TEST"); b.append("</TITLE>"); b.append("</HEAD>"); b.append("<BODY>"); b.append("<H1> Welcome to WebServerAglet! </H1>"); b.append("<a href=next.html> List Proxies </a> <BR>"); b.append("<FORM METHOD=GET ACTION=go>"); b.append("<INPUT NAME=location VALUE=\"atp://your.host\">"); b.append("<INPUT TYPE=submit VALUE=GO!> <BR>"); b.append("<P><FONT color=#FF0000>note:</FONT> Check box "); b.append("for \"Accept HTTP Request as a message\"<BR>"); b.append("in \"Network Preference\" of target server <B>must be checked</B>."); b.append("</BODY>"); b.append("</HTML>"); indexPage = b.toString(); } public void onCreation(Object init) { // // this is just a convension. // getAgletContext().setProperty("name.test", getAgletID()); // // Creating pages in advance. // indexPage(); // // Accepts http requests concurrently. // getMessageManager().setPriority("index.html", MessageManager.NOT_QUEUED); getMessageManager().setPriority("next.html", MessageManager.NOT_QUEUED); }}⌨️ 快捷键说明
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