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annotate src/org/eclipse/jetty/server/handler/ContextHandler.java @ 1000:32d4b569567c

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simplify handle()
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 19 Oct 2016 04:22:51 -0600
parents 7d28be82ab75
children 6939226e0ac4
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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.File;
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22 import java.io.IOException;
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23 import java.io.InputStream;
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24 import java.net.MalformedURLException;
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25 import java.net.URL;
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26 import java.net.URLClassLoader;
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27 import java.security.AccessController;
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28 import java.util.ArrayList;
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29 import java.util.Arrays;
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30 import java.util.Collections;
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31 import java.util.Enumeration;
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32 import java.util.EventListener;
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33 import java.util.HashMap;
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34 import java.util.HashSet;
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35 import java.util.Iterator;
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36 import java.util.List;
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37 import java.util.Locale;
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38 import java.util.Map;
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39 import java.util.Set;
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40 import java.util.concurrent.CopyOnWriteArrayList;
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41
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42 import javax.servlet.RequestDispatcher;
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43 import javax.servlet.Servlet;
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44 import javax.servlet.ServletContext;
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45 import javax.servlet.ServletContextAttributeEvent;
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46 import javax.servlet.ServletContextAttributeListener;
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47 import javax.servlet.ServletContextEvent;
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48 import javax.servlet.ServletContextListener;
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49 import javax.servlet.ServletException;
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50 import javax.servlet.ServletRegistration;
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51 import javax.servlet.ServletRequestAttributeListener;
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52 import javax.servlet.ServletRequestEvent;
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53 import javax.servlet.ServletRequestListener;
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54 import javax.servlet.SessionCookieConfig;
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55 import javax.servlet.SessionTrackingMode;
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56 import javax.servlet.Filter;
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57 import javax.servlet.FilterRegistration;
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58 import javax.servlet.FilterRegistration.Dynamic;
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59 import javax.servlet.descriptor.JspConfigDescriptor;
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60 import javax.servlet.http.HttpServletResponse;
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61
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62 import org.eclipse.jetty.http.HttpException;
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63 import org.eclipse.jetty.http.MimeTypes;
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64 import org.eclipse.jetty.io.Buffer;
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65 import org.eclipse.jetty.server.AbstractHttpConnection;
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66 import org.eclipse.jetty.server.Handler;
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67 import org.eclipse.jetty.server.HandlerContainer;
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68 import org.eclipse.jetty.server.Request;
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69 import org.eclipse.jetty.util.AttributesMap;
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70 import org.eclipse.jetty.util.StringUtil;
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71 import org.eclipse.jetty.util.TypeUtil;
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72 import org.eclipse.jetty.util.URIUtil;
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73 import org.eclipse.jetty.util.component.AggregateLifeCycle;
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74 import org.eclipse.jetty.util.component.Dumpable;
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75 import org.slf4j.Logger;
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76 import org.slf4j.LoggerFactory;
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77 import org.eclipse.jetty.util.resource.Resource;
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78
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79 /* ------------------------------------------------------------ */
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80 /**
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81 * ContextHandler.
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82 *
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83 * This handler wraps a call to handle by setting the context and servlet path.
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84 *
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85 */
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86 public final class ContextHandler extends HandlerWrapper
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87 {
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88 private static final Logger LOG = LoggerFactory.getLogger(ContextHandler.class);
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89
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90 private String _contextPath = "/";
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91 private Resource _baseResource;
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92 private Logger _logger;
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93
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94 public ContextHandler()
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95 {
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96 super();
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97 }
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98
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99 public ContextHandler(String contextPath)
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100 {
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101 this();
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102 setContextPath(contextPath);
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103 }
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104
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105 public ContextHandler(HandlerContainer parent, String contextPath)
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106 {
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107 this();
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108 setContextPath(contextPath);
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109 if (parent instanceof HandlerWrapper)
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110 ((HandlerWrapper)parent).setHandler(this);
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111 else if (parent instanceof HandlerCollection)
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112 ((HandlerCollection)parent).addHandler(this);
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113 }
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114
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115 @Override
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116 public void dump(Appendable out, String indent) throws IOException
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117 {
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118 dumpThis(out);
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119 dump(out,indent,TypeUtil.asList(getHandlers()),getBeans());
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120 }
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121
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122 public String getContextPath()
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123 {
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124 return _contextPath;
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125 }
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126
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127 /* ------------------------------------------------------------ */
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128 /*
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129 * @see org.eclipse.thread.AbstractLifeCycle#doStart()
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130 */
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131 @Override
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132 protected void doStart() throws Exception
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133 {
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134 if (_contextPath == null)
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135 throw new IllegalStateException("Null contextPath");
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136
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137 _logger = LoggerFactory.getLogger(getContextPath());
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138
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139 super.doStart();
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140 }
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141
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142 /* ------------------------------------------------------------ */
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143 /*
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144 * @see org.eclipse.thread.AbstractLifeCycle#doStop()
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145 */
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146 @Override
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147 protected void doStop() throws Exception
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148 {
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149 super.doStop();
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150 LOG.info("stopped {}",this);
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151 }
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152
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153 private boolean checkContext(final String target, final Request request, final HttpServletResponse response) throws IOException, ServletException
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154 {
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155 if (request.isHandled())
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156 return false;
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157
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158 // Are we not the root context?
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159 if (_contextPath.length() > 1)
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160 {
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161 // reject requests that are not for us
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162 if (!target.startsWith(_contextPath))
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163 return false;
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164 if (target.length() > _contextPath.length() && target.charAt(_contextPath.length()) != '/')
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165 return false;
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166
3428c60d7cfc replace jetty jars with source
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167 // redirect null path infos
991
688c39c50ee3 simplify ContextHandler
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diff changeset
168 if (_contextPath.length() == target.length())
802
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169 {
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170 // context request must end with /
1000
32d4b569567c simplify handle()
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diff changeset
171 request.setHandled(true);
32d4b569567c simplify handle()
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diff changeset
172 if (request.getQueryString() != null)
32d4b569567c simplify handle()
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diff changeset
173 response.sendRedirect(URIUtil.addPaths(request.getRequestURI(),URIUtil.SLASH) + "?" + request.getQueryString());
802
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174 else
1000
32d4b569567c simplify handle()
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diff changeset
175 response.sendRedirect(URIUtil.addPaths(request.getRequestURI(),URIUtil.SLASH));
802
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176 return false;
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177 }
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178 }
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179
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180 return true;
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parents:
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181 }
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182
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183 @Override
1000
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184 public void handle(String target, Request request, HttpServletResponse response) throws IOException, ServletException
802
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185 {
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186 String old_context_path = null;
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187 String old_path_info = null;
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188 String pathInfo = target;
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189
1000
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diff changeset
190 ContextHandler oldContextHandler = request._contextHandler;
802
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191
3428c60d7cfc replace jetty jars with source
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192 // Are we already in this context?
994
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193 if (oldContextHandler != this)
802
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194 {
1000
32d4b569567c simplify handle()
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diff changeset
195 if (!checkContext(target,request,response))
991
688c39c50ee3 simplify ContextHandler
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diff changeset
196 return;
802
3428c60d7cfc replace jetty jars with source
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197
991
688c39c50ee3 simplify ContextHandler
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diff changeset
198 if (target.length() > _contextPath.length())
688c39c50ee3 simplify ContextHandler
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199 {
688c39c50ee3 simplify ContextHandler
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diff changeset
200 if (_contextPath.length() > 1)
688c39c50ee3 simplify ContextHandler
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diff changeset
201 target = target.substring(_contextPath.length());
688c39c50ee3 simplify ContextHandler
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diff changeset
202 pathInfo = target;
802
3428c60d7cfc replace jetty jars with source
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diff changeset
203 }
991
688c39c50ee3 simplify ContextHandler
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parents: 989
diff changeset
204 else if (_contextPath.length() == 1)
802
3428c60d7cfc replace jetty jars with source
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205 {
991
688c39c50ee3 simplify ContextHandler
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diff changeset
206 target = URIUtil.SLASH;
688c39c50ee3 simplify ContextHandler
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diff changeset
207 pathInfo = URIUtil.SLASH;
688c39c50ee3 simplify ContextHandler
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diff changeset
208 }
688c39c50ee3 simplify ContextHandler
Franklin Schmidt <fschmidt@gmail.com>
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diff changeset
209 else
688c39c50ee3 simplify ContextHandler
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diff changeset
210 {
688c39c50ee3 simplify ContextHandler
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diff changeset
211 target = URIUtil.SLASH;
688c39c50ee3 simplify ContextHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 989
diff changeset
212 pathInfo = null;
802
3428c60d7cfc replace jetty jars with source
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diff changeset
213 }
3428c60d7cfc replace jetty jars with source
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214 }
3428c60d7cfc replace jetty jars with source
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215
3428c60d7cfc replace jetty jars with source
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diff changeset
216 try
3428c60d7cfc replace jetty jars with source
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diff changeset
217 {
1000
32d4b569567c simplify handle()
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diff changeset
218 old_context_path = request.getContextPath();
32d4b569567c simplify handle()
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diff changeset
219 old_path_info = request.getPathInfo();
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
220
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
221 // Update the paths
1000
32d4b569567c simplify handle()
Franklin Schmidt <fschmidt@gmail.com>
parents: 997
diff changeset
222 request._contextHandler = this;
991
688c39c50ee3 simplify ContextHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 989
diff changeset
223 if (target.startsWith("/"))
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
224 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
225 if (_contextPath.length() == 1)
1000
32d4b569567c simplify handle()
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diff changeset
226 request.setContextPath("");
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
227 else
1000
32d4b569567c simplify handle()
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diff changeset
228 request.setContextPath(_contextPath);
32d4b569567c simplify handle()
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diff changeset
229 request.setPathInfo(pathInfo);
802
3428c60d7cfc replace jetty jars with source
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diff changeset
230 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
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diff changeset
231
993
d9d95acded81 remove ScopedHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 992
diff changeset
232 try
d9d95acded81 remove ScopedHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 992
diff changeset
233 {
1000
32d4b569567c simplify handle()
Franklin Schmidt <fschmidt@gmail.com>
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diff changeset
234 super.handle(target,request,response);
993
d9d95acded81 remove ScopedHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 992
diff changeset
235 }
d9d95acded81 remove ScopedHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 992
diff changeset
236 catch (HttpException e)
d9d95acded81 remove ScopedHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 992
diff changeset
237 {
d9d95acded81 remove ScopedHandler
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parents: 992
diff changeset
238 LOG.debug("",e);
1000
32d4b569567c simplify handle()
Franklin Schmidt <fschmidt@gmail.com>
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diff changeset
239 request.setHandled(true);
993
d9d95acded81 remove ScopedHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 992
diff changeset
240 response.sendError(e.getStatus(),e.getReason());
d9d95acded81 remove ScopedHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 992
diff changeset
241 }
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
242 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
243 finally
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
244 {
994
4e9d373bf6e9 remove ContextHandler.Context
Franklin Schmidt <fschmidt@gmail.com>
parents: 993
diff changeset
245 if (oldContextHandler != this)
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
246 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
247 // reset the context and servlet path.
1000
32d4b569567c simplify handle()
Franklin Schmidt <fschmidt@gmail.com>
parents: 997
diff changeset
248 request._contextHandler = oldContextHandler;
32d4b569567c simplify handle()
Franklin Schmidt <fschmidt@gmail.com>
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diff changeset
249 request.setContextPath(old_context_path);
32d4b569567c simplify handle()
Franklin Schmidt <fschmidt@gmail.com>
parents: 997
diff changeset
250 request.setPathInfo(old_path_info);
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
251 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
252 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
253 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
254
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
255 public void setContextPath(String contextPath)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
256 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
257 if (contextPath != null && contextPath.length() > 1 && contextPath.endsWith("/"))
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
258 throw new IllegalArgumentException("ends with /");
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
259 _contextPath = contextPath;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
260 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
261
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
262 public Resource getBaseResource()
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
263 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
264 return _baseResource;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
265 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
266
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
267 public String getResourceBase()
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
268 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
269 if (_baseResource == null)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
270 return null;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
271 return _baseResource.toString();
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
272 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
273
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
274 public void setBaseResource(Resource base)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
275 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
276 _baseResource = base;
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
277 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
278
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
279 public void setResourceBase(String resourceBase)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
280 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
281 try
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
282 {
991
688c39c50ee3 simplify ContextHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 989
diff changeset
283 setBaseResource(Resource.newResource(resourceBase));
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
284 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
285 catch (Exception e)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
286 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
287 LOG.warn(e.toString());
820
8e9db0bbf4f9 remove org.eclipse.jetty.util.log and upgrade slf4j
Franklin Schmidt <fschmidt@gmail.com>
parents: 802
diff changeset
288 LOG.debug("",e);
802
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
289 throw new IllegalArgumentException(resourceBase);
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
290 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
291 }
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
292
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
293 @Override
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
294 public String toString()
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
295 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
296 StringBuilder b = new StringBuilder();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
297
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
298 Package pkg = getClass().getPackage();
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
299 if (pkg != null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
300 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
301 String p = pkg.getName();
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
302 if (p != null && p.length() > 0)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
303 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
304 String[] ss = p.split("\\.");
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
305 for (String s : ss)
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
306 b.append(s.charAt(0)).append('.');
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
307 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
308 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
309 b.append(getClass().getSimpleName());
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
310 b.append('{').append(getContextPath()).append(',').append(getBaseResource());
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
311
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
312 b.append('}');
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
313
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
314 return b.toString();
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
315 }
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
316
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
317 public Resource getResource(String path) throws MalformedURLException
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
318 {
3428c60d7cfc replace jetty jars with source
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parents:
diff changeset
319 if (path == null || !path.startsWith(URIUtil.SLASH))
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
320 throw new MalformedURLException(path);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
321
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
322 if (_baseResource == null)
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
323 return null;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
324
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
325 try
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
326 {
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
327 path = URIUtil.canonicalPath(path);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
328 Resource resource = _baseResource.addPath(path);
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
329
991
688c39c50ee3 simplify ContextHandler
Franklin Schmidt <fschmidt@gmail.com>
parents: 989
diff changeset
330 if (resource.getAlias() == null) // check not alias
802
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
331 return resource;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
parents:
diff changeset
332 return null;
3428c60d7cfc replace jetty jars with source
Franklin Schmidt <fschmidt@gmail.com>
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333 }
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334 catch (Exception e)
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335 {
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336 LOG.trace("",e);
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337 }
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338
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339 return null;
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340 }
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341
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342 public Set<String> getResourcePaths(String path)
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343 {
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344 try
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345 {
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346 path = URIUtil.canonicalPath(path);
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347 Resource resource = getResource(path);
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348
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349 if (resource != null && resource.exists())
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350 {
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351 if (!path.endsWith(URIUtil.SLASH))
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352 path = path + URIUtil.SLASH;
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353
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354 String[] l = resource.list();
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355 if (l != null)
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356 {
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357 HashSet<String> set = new HashSet<String>();
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358 for (int i = 0; i < l.length; i++)
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359 set.add(path + l[i]);
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360 return set;
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361 }
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362 }
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363 }
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364 catch (Exception e)
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365 {
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366 LOG.trace("",e);
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367 }
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368 return Collections.emptySet();
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369 }
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370 }