Mercurial Hosting > luan
annotate src/luan/lib/HttpLib.java @ 135:3119326260ea
revert rev 125 and only preload Java
git-svn-id: https://luan-java.googlecode.com/svn/trunk@136 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Wed, 11 Jun 2014 06:30:46 +0000 |
parents | 0594c132888b |
children | 7e160d2f6d9c |
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1 package luan.lib; |
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2 |
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3 import java.io.PrintStream; |
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4 import java.io.IOException; |
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5 import java.util.Map; |
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6 import java.util.Set; |
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7 import java.util.Arrays; |
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8 import java.util.Enumeration; |
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9 import javax.servlet.ServletOutputStream; |
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10 import javax.servlet.http.Cookie; |
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11 import javax.servlet.http.HttpServletRequest; |
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12 import javax.servlet.http.HttpServletResponse; |
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13 import luan.LuanState; |
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14 import luan.LuanFunction; |
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15 import luan.LuanElement; |
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16 import luan.LuanException; |
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17 import luan.LuanTable; |
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18 import luan.LuanJavaFunction; |
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19 import luan.LuanExitException; |
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20 |
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21 |
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22 public final class HttpLib { |
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23 |
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24 public static final String NAME = "Http"; |
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25 public static final String FN_NAME = "Http.server"; |
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26 |
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27 public static void load(LuanState luan) throws LuanException { |
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28 PackageLib.require(luan,NAME); |
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29 Object fn = luan.get(HttpLib.FN_NAME); |
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30 if( !(fn instanceof LuanFunction) ) |
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31 throw luan.exception( "function '"+HttpLib.FN_NAME+"' not defined" ); |
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32 } |
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33 |
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34 public static void service(LuanState luan,HttpServletRequest request,HttpServletResponse response) |
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35 throws LuanException, IOException |
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36 { |
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37 LuanFunction fn = (LuanFunction)luan.get(FN_NAME); |
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38 ServletOutputStream sout = response.getOutputStream(); |
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39 luan.set( "Io.stdout", IoLib.textWriter(new PrintStream(sout)) ); |
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40 |
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41 LuanTable module = (LuanTable)luan.loaded().get(NAME); |
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42 |
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43 try { |
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44 new HttpLib(request,response,module); |
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45 } catch(NoSuchMethodException e) { |
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46 throw new RuntimeException(e); |
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47 } |
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48 |
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49 luan.call(fn,FN_NAME); |
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50 } |
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51 |
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52 private final HttpServletRequest request; |
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53 private final HttpServletResponse response; |
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54 |
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55 private HttpLib(HttpServletRequest request,HttpServletResponse response,LuanTable module) throws NoSuchMethodException { |
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56 this.request = request; |
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57 this.response = response; |
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58 |
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59 LuanTable req = new LuanTable(); |
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60 module.put("request",req); |
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61 LuanTable resp = new LuanTable(); |
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62 module.put("response",resp); |
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63 |
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64 req.put( "get_attribute", new LuanJavaFunction(HttpServletRequest.class.getMethod("getAttribute",String.class),request) ); |
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65 req.put( "set_attribute", new LuanJavaFunction(HttpServletRequest.class.getMethod("setAttribute",String.class,Object.class),request) ); |
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66 req.put( "get_parameter", new LuanJavaFunction(HttpServletRequest.class.getMethod("getParameter",String.class),request) ); |
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67 req.put( "get_parameter_values", new LuanJavaFunction(HttpServletRequest.class.getMethod("getParameterValues",String.class),request) ); |
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68 req.put( "get_header", new LuanJavaFunction(HttpServletRequest.class.getMethod("getHeader",String.class),request) ); |
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69 add( req, "get_cookie_value", String.class ); |
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70 req.put( "method", new LuanJavaFunction(HttpServletRequest.class.getMethod("getMethod"),request) ); |
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71 req.put( "servlet_path", new LuanJavaFunction(HttpServletRequest.class.getMethod("getServletPath"),request) ); |
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72 req.put( "server_name", new LuanJavaFunction(HttpServletRequest.class.getMethod("getServerName"),request) ); |
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73 add( req, "current_url" ); |
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74 req.put( "remote_address", new LuanJavaFunction(HttpServletRequest.class.getMethod("getRemoteAddr"),request) ); |
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75 |
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76 add( resp, "send_redirect", String.class ); |
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77 add( resp, "send_error", Integer.TYPE, String.class ); |
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78 resp.put( "contains_header", new LuanJavaFunction(HttpServletResponse.class.getMethod("containsHeader",String.class),response) ); |
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79 resp.put( "set_header", new LuanJavaFunction(HttpServletResponse.class.getMethod("setHeader",String.class,String.class),response) ); |
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80 add( resp, "set_cookie", String.class, String.class, Boolean.TYPE, String.class ); |
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81 add( resp, "remove_cookie", String.class, String.class ); |
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82 } |
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83 |
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84 private void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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85 t.put( method, new LuanJavaFunction(HttpLib.class.getMethod(method,parameterTypes),this) ); |
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86 } |
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87 |
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88 public String get_cookie_value(String name) { |
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89 return getCookieValue(request, name); |
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90 } |
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91 |
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92 public String current_url() { |
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93 return getCurrentURL(request); |
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94 } |
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95 |
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96 public void send_redirect(String redirectUrl) |
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97 throws IOException |
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98 { |
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99 response.sendRedirect(redirectUrl); |
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100 throw new LuanExitException(); |
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101 } |
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102 |
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103 public void send_error(int code,String text) |
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104 throws IOException |
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105 { |
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106 response.sendError(code, text); |
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107 throw new LuanExitException(); |
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108 } |
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109 |
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110 public void set_cookie(String name,String value,boolean isPersistent, String domain) { |
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111 setCookie(request,response,name,value,isPersistent,domain); |
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112 } |
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113 |
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114 public void remove_cookie(String name, String domain) { |
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115 removeCookie(request,response,name,domain); |
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116 } |
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117 |
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119 // static utils |
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121 public static String getQueryString(HttpServletRequest request) { |
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122 return getQueryString(request,0); |
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123 } |
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124 |
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125 public static String getQueryString(HttpServletRequest request,int maxValueLen) { |
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126 String method = request.getMethod(); |
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127 if( method.equals("GET") ) |
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128 return request.getQueryString(); |
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129 if( !method.equals("POST") && !method.equals("HEAD") ) |
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130 throw new RuntimeException(method); |
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131 Enumeration en = request.getParameterNames(); |
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132 StringBuilder queryBuf = new StringBuilder(); |
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133 if( !en.hasMoreElements() ) |
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134 return null; |
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135 do { |
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136 String param = (String)en.nextElement(); |
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137 String value = request.getParameter(param); |
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138 if( maxValueLen > 0 ) { |
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139 int len = value.length(); |
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140 if( len > maxValueLen ) |
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141 value = value.substring(0,maxValueLen) + "..." + (len-maxValueLen); |
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142 } |
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143 queryBuf.append(param); |
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144 queryBuf.append('='); |
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145 queryBuf.append(value); |
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146 queryBuf.append('&'); |
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147 } while( en.hasMoreElements() ); |
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148 queryBuf.deleteCharAt(queryBuf.length() - 1); |
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149 return queryBuf.toString(); |
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150 } |
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151 |
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152 public static String getCurrentURL(HttpServletRequest request) { |
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153 return getCurrentURL(request,0); |
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154 } |
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155 |
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156 public static String getCurrentURL(HttpServletRequest request,int maxValueLen) { |
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157 // StringBuffer buf = HttpUtils.getRequestURL(request); |
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158 StringBuffer buf = request.getRequestURL(); |
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159 String qStr = getQueryString(request,maxValueLen); |
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160 if(qStr != null && qStr.length() > 0) { |
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161 buf.append('?'); |
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162 buf.append(qStr); |
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163 } |
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164 return buf.toString(); |
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165 } |
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166 |
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167 private static String escape(String value) { |
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168 return value.replaceAll(";", "%3B"); |
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169 } |
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170 |
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171 private static String unescape(String value) { |
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172 return value.replaceAll("%3B", ";"); |
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173 } |
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174 |
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175 private static Cookie getCookie(HttpServletRequest request,String name) { |
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176 Cookie[] cookies = request.getCookies(); |
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177 if( cookies == null ) |
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178 return null; |
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179 for (Cookie cookie : cookies) { |
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180 if (cookie.getName().equals(name)) |
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181 return cookie; |
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182 } |
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183 return null; |
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184 } |
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185 |
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186 public static String getCookieValue(HttpServletRequest request,String name) { |
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187 Cookie cookie = getCookie(request,name); |
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188 return cookie==null ? null : unescape(cookie.getValue()); |
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189 } |
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190 |
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191 public static void setCookie(HttpServletRequest request,HttpServletResponse response,String name,String value,boolean isPersistent, String domain) { |
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192 Cookie cookie = getCookie(request,name); |
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193 if( cookie==null || !cookie.getValue().equals(value) ) { |
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194 cookie = new Cookie(name, escape(value)); |
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195 cookie.setPath("/"); |
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196 if (domain != null && domain.length() > 0) |
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197 cookie.setDomain(domain); |
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198 if( isPersistent ) |
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199 cookie.setMaxAge(10000000); |
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200 response.addCookie(cookie); |
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201 } |
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202 } |
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203 |
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204 public static void removeCookie(HttpServletRequest request, |
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205 HttpServletResponse response, |
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206 String name, |
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207 String domain |
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208 |
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209 ) { |
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210 Cookie cookie = getCookie(request, name); |
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211 if(cookie != null) { |
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212 Cookie delCookie = new Cookie(name, "delete"); |
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213 delCookie.setPath("/"); |
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214 delCookie.setMaxAge(0); |
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215 if (domain != null && domain.length() > 0) |
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216 delCookie.setDomain(domain); |
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217 response.addCookie(delCookie); |
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218 } |
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219 } |
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220 |
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221 } |