📄 webservlet.java
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package org.placelab.demo.webservices;import java.util.Hashtable;import org.placelab.core.TwoDCoordinate;import org.placelab.proxy.HTTPRequest;import org.placelab.proxy.HTTPResponse;import org.placelab.proxy.ProxyServletEngine;import org.placelab.proxy.Servlet;/** * This sample creates a placelab object and installs a servlet * in it. */abstract public class WebServlet implements Servlet { private WebService webService; private String name; public WebServlet(WebService webService, String urlPrefix, String name) { this.webService = webService; this.name = name; ProxyServletEngine.addServlet(urlPrefix, this); } // A servlet has a name public String getName() { return name; } protected TwoDCoordinate getEstimatedPosition() { return webService.getEstimatedPosition(); } protected String getDaemonURL() { return "http://localhost:" + ProxyServletEngine.getConfig().getLocalProxyPort(); } // print the last estimate we got from the tracker protected HTTPResponse createResponse(String title, String url) { String html = "<HTML>\n" + "<TITLE>"+title+"</TITLE>\n" + "<FRAMESET ROWS=\"40,100%\" BORDER=0>\n" + "<FRAME NAME=\"placelab_poweredby\" \n" + " SRC=\"http://www.placelab.org/services/powered-by.html\"/>\n"+ "<FRAME NAME=\"placelab_main\" SRC=\"" + url + "\"/>\n" + "<NOFRAMES>\n" + "<META HTTP-EQUIV=\"Refresh\" CONTENT=\"0;url=" + url + "\"/>\n"+ "<BODY>This page is located at <A HREF=\""+url+"\">"+url+"</A>\n"+ "</BODY>\n"+ "</NOFRAMES>\n"+ "</FRAMESET>\n"+ "</HTML>\n"; return new HTTPResponse(HTTPResponse.RESPONSE_OK, HTTPResponse.RESPONSE_OK_STR, "text/html", // mime type html.getBytes()); } // servlets can add headers to outgoing http requests. public Hashtable injectHeaders(HTTPRequest req) { return null; }}⌨️ 快捷键说明
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