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annotate src/org/eclipse/jetty/server/handler/DefaultHandler.java @ 1022:3718afd99988

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HttpHeaders uses StringCache
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 01 Nov 2016 01:04:46 -0600
parents 32d4b569567c
children
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rev   line source
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.server.handler;
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20
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21 import java.io.IOException;
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22 import java.io.OutputStream;
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23 import java.net.URL;
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24
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25 import javax.servlet.ServletException;
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26 import javax.servlet.http.HttpServletResponse;
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27
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28 import org.eclipse.jetty.http.HttpMethods;
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29 import org.eclipse.jetty.http.MimeTypes;
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30 import org.eclipse.jetty.server.Handler;
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31 import org.eclipse.jetty.server.Request;
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32 import org.eclipse.jetty.server.Server;
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33 import org.eclipse.jetty.util.ByteArrayISO8859Writer;
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34 import org.eclipse.jetty.util.IO;
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35 import org.slf4j.Logger;
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36 import org.slf4j.LoggerFactory;
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37 import org.eclipse.jetty.util.resource.Resource;
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38
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39
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40 /* ------------------------------------------------------------ */
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41 /** Default Handler.
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42 *
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43 * This handle will deal with unhandled requests in the server.
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44 * For requests for favicon.ico, the Jetty icon is served.
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45 * For reqests to '/' a 404 with a list of known contexts is served.
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46 * For all other requests a normal 404 is served.
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47 * TODO Implement OPTIONS and TRACE methods for the server.
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48 *
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49 *
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50 * @org.apache.xbean.XBean
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51 */
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52 public class DefaultHandler extends AbstractHandler
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53 {
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54 private static final Logger LOG = LoggerFactory.getLogger(DefaultHandler.class);
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55
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56 boolean _showContexts=true;
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57
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58 @Override
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59 public void handle(String target, Request request, HttpServletResponse response) throws IOException, ServletException
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60 {
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61 if (response.isCommitted() || request.isHandled())
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62 return;
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63
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64 request.setHandled(true);
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65
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66 String method=request.getMethod();
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67
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68 if (!method.equals(HttpMethods.GET) || !request.getRequestURI().equals("/"))
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69 {
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70 response.sendError(HttpServletResponse.SC_NOT_FOUND);
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71 return;
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72 }
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73
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74 response.setStatus(HttpServletResponse.SC_NOT_FOUND);
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75 response.setContentType(MimeTypes.TEXT_HTML);
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76
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77 ByteArrayISO8859Writer writer = new ByteArrayISO8859Writer(1500);
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78
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79 writer.write("<HTML>\n<HEAD>\n<TITLE>Error 404 - Not Found");
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80 writer.write("</TITLE>\n<BODY>\n<H2>Error 404 - Not Found.</H2>\n");
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81 writer.write("No context on this server matched or handled this request.<BR>");
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82
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83 if (_showContexts)
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84 {
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85 writer.write("Contexts known to this server are: <ul>");
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86
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87 Server server = getServer();
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88 Handler[] handlers = server==null?null:server.getChildHandlersByClass(ContextHandler.class);
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89
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90 for (int i=0;handlers!=null && i<handlers.length;i++)
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91 {
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92 ContextHandler context = (ContextHandler)handlers[i];
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93 if (context.isRunning())
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94 {
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95 writer.write("<li><a href=\"");
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96 writer.write(context.getContextPath());
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97 if (context.getContextPath().length()>1 && context.getContextPath().endsWith("/"))
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98 writer.write("/");
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99 writer.write("\">");
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100 writer.write(context.getContextPath());
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101 writer.write("&nbsp;--->&nbsp;");
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102 writer.write(context.toString());
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103 writer.write("</a></li>\n");
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104 }
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105 else
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106 {
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107 writer.write("<li>");
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108 writer.write(context.getContextPath());
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109 writer.write("&nbsp;--->&nbsp;");
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110 writer.write(context.toString());
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111 if (context.isFailed())
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112 writer.write(" [failed]");
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113 if (context.isStopped())
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114 writer.write(" [stopped]");
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115 writer.write("</li>\n");
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116 }
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117 }
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118 }
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119
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120 for (int i=0;i<10;i++)
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121 writer.write("\n<!-- Padding for IE -->");
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122
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123 writer.write("\n</BODY>\n</HTML>\n");
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124 writer.flush();
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125 response.setContentLength(writer.size());
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126 OutputStream out=response.getOutputStream();
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127 writer.writeTo(out);
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128 out.close();
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129 }
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130
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131 public boolean getShowContexts()
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132 {
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133 return _showContexts;
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134 }
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135
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136 public void setShowContexts(boolean show)
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137 {
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138 _showContexts = show;
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139 }
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140
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141 }