Mercurial Hosting > luan
annotate web/src/luan/modules/web/HttpServicer.java @ 251:705d14f4d8ee
start web testing
git-svn-id: https://luan-java.googlecode.com/svn/trunk@252 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Sun, 19 Oct 2014 03:38:47 +0000 |
parents | web/src/luan/modules/web/HttpLuan.java@9737ebb9aaa0 |
children | 9e0d4452e649 |
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1 package luan.modules.web; |
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2 |
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3 import java.io.PrintWriter; |
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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.AbstractMap; |
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7 import java.util.Set; |
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8 import java.util.Arrays; |
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9 import java.util.Iterator; |
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10 import java.util.Enumeration; |
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11 import javax.servlet.ServletOutputStream; |
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12 import javax.servlet.http.Cookie; |
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13 import javax.servlet.http.HttpServletRequest; |
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14 import javax.servlet.http.HttpServletResponse; |
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15 import javax.servlet.http.HttpSession; |
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16 import luan.Luan; |
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17 import luan.LuanState; |
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18 import luan.LuanFunction; |
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19 import luan.LuanElement; |
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20 import luan.LuanException; |
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21 import luan.LuanTable; |
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22 import luan.AbstractLuanTable; |
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23 import luan.LuanJavaFunction; |
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24 import luan.LuanExitException; |
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25 import luan.LuanProperty; |
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26 import luan.DeepCloner; |
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27 import luan.modules.PackageLuan; |
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28 import luan.modules.IoLuan; |
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29 import luan.modules.TableLuan; |
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30 |
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31 |
251
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32 public final class HttpServicer { |
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33 |
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34 public static boolean service(LuanState luan,HttpServletRequest request,HttpServletResponse response,String modName) |
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35 throws LuanException |
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36 { |
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37 LuanFunction fn; |
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38 synchronized(luan) { |
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39 Object mod = PackageLuan.load(luan,modName); |
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40 if( mod==null ) |
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41 return false; |
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42 if( !(mod instanceof LuanTable) ) |
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43 throw luan.exception( "module '"+modName+"' must return a table" ); |
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44 LuanTable tbl = (LuanTable)mod; |
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45 if( Luan.toBoolean( tbl.get("per_session") ) ) { |
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46 HttpSession session = request.getSession(); |
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47 LuanState sessionLuan = (LuanState)session.getValue("luan"); |
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48 if( sessionLuan!=null ) { |
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49 luan = sessionLuan; |
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50 } else { |
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51 DeepCloner cloner = new DeepCloner(); |
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52 luan = cloner.deepClone(luan); |
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53 session.putValue("luan",luan); |
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54 } |
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55 tbl = (LuanTable)PackageLuan.require(luan,modName); |
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56 fn = (LuanFunction)tbl.get("service"); |
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57 } else { |
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58 fn = (LuanFunction)tbl.get("service"); |
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59 if( fn == null ) |
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60 throw luan.exception( "function 'service' is not defined" ); |
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61 DeepCloner cloner = new DeepCloner(); |
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62 luan = cloner.deepClone(luan); |
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63 fn = cloner.get(fn); |
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64 } |
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65 } |
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66 |
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67 LuanTable module = (LuanTable)PackageLuan.loaded(luan).get("web/Http"); |
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68 if( module == null ) |
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69 throw luan.exception( "module 'web/Http' not defined" ); |
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70 HttpServicer lib = new HttpServicer(request,response); |
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71 try { |
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72 module.put( "request", lib.requestTable() ); |
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73 module.put( "response", lib.responseTable() ); |
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74 module.put( "session", lib.sessionTable() ); |
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75 /* |
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76 module.put( "write", new LuanJavaFunction( |
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77 HttpServicer.class.getMethod( "text_write", LuanState.class, new Object[0].getClass() ), lib |
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78 ) ); |
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79 */ |
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80 } catch(NoSuchMethodException e) { |
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81 throw new RuntimeException(e); |
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82 } |
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83 |
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84 try { |
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85 luan.call(fn,"<http>"); |
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86 } catch(LuanExitException e) { |
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87 // System.out.println("caught LuanExitException"); |
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88 } |
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89 return true; |
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90 } |
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91 |
136
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92 |
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93 |
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94 private final HttpServletRequest request; |
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95 private final HttpServletResponse response; |
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96 // private PrintWriter writer = null; |
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97 // private ServletOutputStream sos = null; |
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98 |
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99 private HttpServicer(HttpServletRequest request,HttpServletResponse response) { |
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100 this.request = request; |
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101 this.response = response; |
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102 } |
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103 |
136
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104 private LuanTable requestTable() throws NoSuchMethodException { |
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105 LuanTable tbl = Luan.newPropertyTable(); |
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106 tbl.put("java",request); |
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107 LuanTable parameters = new NameTable() { |
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108 |
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109 @Override Object get(String name) { |
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110 return request.getParameter(name); |
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111 } |
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112 |
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113 @Override Iterator<String> names() { |
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114 return new EnumerationIterator(request.getParameterNames()); |
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115 } |
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116 |
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117 @Override protected String type() { |
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118 return "request.parameters-table"; |
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119 } |
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120 }; |
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121 tbl.put( "parameters", parameters ); |
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122 add( tbl, "get_parameter_values", String.class ); |
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123 LuanTable headers = new NameTable() { |
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124 |
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125 @Override Object get(String name) { |
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126 return request.getHeader(name); |
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127 } |
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128 |
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129 @Override Iterator<String> names() { |
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130 return new EnumerationIterator(request.getHeaderNames()); |
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131 } |
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132 |
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133 @Override protected String type() { |
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134 return "request.headers-table"; |
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135 } |
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136 }; |
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137 tbl.put( "headers", headers ); |
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138 tbl.put( "method", new LuanProperty() { public Object get() { |
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139 return request.getMethod(); |
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140 } } ); |
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141 tbl.put( "servlet_path", new LuanProperty() { public Object get() { |
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142 return request.getServletPath(); |
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143 } } ); |
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144 tbl.put( "server_name", new LuanProperty() { public Object get() { |
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145 return request.getServerName(); |
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146 } } ); |
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147 tbl.put( "current_url", new LuanProperty() { public Object get() { |
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148 return getCurrentURL(request); |
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149 } } ); |
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150 tbl.put( "remote_address", new LuanProperty() { public Object get() { |
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151 return request.getRemoteAddr(); |
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152 } } ); |
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153 LuanTable cookies = new AbstractLuanTable() { |
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154 |
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155 @Override public final Object get(Object key) { |
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156 if( !(key instanceof String) ) |
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157 return null; |
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158 String name = (String)key; |
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159 return getCookieValue(request,name); |
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160 } |
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161 |
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162 @Override public final Iterator<Map.Entry<Object,Object>> iterator() { |
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163 return new Iterator<Map.Entry<Object,Object>>() { |
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164 final Cookie[] cookies = request.getCookies(); |
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165 int i = 0; |
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166 |
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167 @Override public boolean hasNext() { |
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168 return i < cookies.length; |
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169 } |
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170 @Override public Map.Entry<Object,Object> next() { |
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171 Cookie cookie = cookies[i++]; |
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172 String name = cookie.getName(); |
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173 Object val = unescape(cookie.getValue()); |
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174 return new AbstractMap.SimpleEntry<Object,Object>(name,val); |
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175 } |
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176 @Override public void remove() { |
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177 throw new UnsupportedOperationException(); |
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178 } |
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179 }; |
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180 } |
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181 |
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182 @Override protected String type() { |
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183 return "request.cookies-table"; |
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184 } |
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185 }; |
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186 tbl.put( "cookies", cookies ); |
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187 return tbl; |
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188 } |
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189 |
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190 private LuanTable responseTable() throws NoSuchMethodException { |
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191 LuanTable tbl = Luan.newPropertyTable(); |
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192 tbl.put("java",response); |
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193 add( tbl, "send_redirect", String.class ); |
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194 add( tbl, "send_error", Integer.TYPE, String.class ); |
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195 LuanTable headers = new NameTable() { |
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196 |
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197 @Override Object get(String name) { |
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198 return response.getHeader(name); |
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199 } |
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200 |
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201 @Override Iterator<String> names() { |
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202 return response.getHeaderNames().iterator(); |
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203 } |
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204 |
224
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205 @Override public void put(Object key,Object val) { |
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206 if( !(key instanceof String) ) |
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207 throw new IllegalArgumentException("key must be string for headers table"); |
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208 String name = (String)key; |
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209 if( val instanceof String ) { |
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210 response.setHeader(name,(String)val); |
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211 return; |
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212 } |
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213 Integer i = Luan.asInteger(val); |
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214 if( i != null ) { |
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215 response.setIntHeader(name,i); |
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216 return; |
223
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217 } |
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218 throw new IllegalArgumentException("value must be string or integer for headers table"); |
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219 } |
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220 |
222
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221 @Override protected String type() { |
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222 return "response.headers-table"; |
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223 } |
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224 }; |
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225 tbl.put( "headers", headers ); |
227
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226 tbl.put( "content_type", new LuanProperty() { |
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227 @Override public Object get() { |
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228 return response.getContentType(); |
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229 } |
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230 @Override public boolean set(Object value) { |
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231 response.setContentType(string(value)); return true; |
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232 } |
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233 } ); |
227
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234 tbl.put( "character_encoding", new LuanProperty() { |
226
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235 @Override public Object get() { |
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236 return response.getCharacterEncoding(); |
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237 } |
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238 @Override public boolean set(Object value) { |
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239 response.setCharacterEncoding(string(value)); return true; |
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240 } |
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241 } ); |
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242 add( tbl, "text_writer" ); |
225
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243 add( tbl, "set_cookie", String.class, String.class, Boolean.TYPE, String.class ); |
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244 add( tbl, "remove_cookie", String.class, String.class ); |
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245 return tbl; |
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246 } |
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247 |
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248 private LuanTable sessionTable() throws NoSuchMethodException { |
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249 LuanTable tbl = Luan.newTable(); |
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250 LuanTable attributes = new NameTable() { |
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251 |
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252 @Override Object get(String name) { |
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253 return request.getSession().getAttribute(name); |
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254 } |
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255 |
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256 @Override Iterator<String> names() { |
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257 return new EnumerationIterator(request.getSession().getAttributeNames()); |
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258 } |
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259 |
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260 @Override public void put(Object key,Object val) { |
222
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261 if( !(key instanceof String) ) |
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262 throw new IllegalArgumentException("key must be string for session attributes table"); |
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263 String name = (String)key; |
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264 request.getSession().setAttribute(name,val); |
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265 } |
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266 |
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267 @Override protected String type() { |
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268 return "session.attributes-table"; |
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269 } |
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270 }; |
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271 tbl.put( "attributes", attributes ); |
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272 return tbl; |
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273 } |
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274 |
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275 private void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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276 t.put( method, new LuanJavaFunction(HttpServicer.class.getMethod(method,parameterTypes),this) ); |
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277 } |
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278 /* |
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279 public void text_write(LuanState luan,Object... args) throws LuanException, IOException { |
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280 if( writer == null ) |
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281 writer = response.getWriter(); |
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282 for( Object obj : args ) { |
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283 writer.print( luan.toString(obj) ); |
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284 } |
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285 } |
138
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286 */ |
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287 public LuanTable text_writer() throws IOException { |
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288 return IoLuan.textWriter(response.getWriter()); |
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289 } |
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290 |
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291 public LuanTable get_parameter_values(String name) { |
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292 Object[] a = request.getParameterValues(name); |
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293 return a==null ? null : TableLuan.pack(a); |
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294 } |
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295 |
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296 public void send_redirect(String redirectUrl) |
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297 throws IOException |
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298 { |
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299 response.sendRedirect(redirectUrl); |
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300 throw new LuanExitException(); |
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301 } |
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302 |
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303 public void send_error(int code,String text) |
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304 throws IOException |
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305 { |
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306 response.sendError(code, text); |
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307 throw new LuanExitException(); |
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308 } |
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309 |
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310 public void set_cookie(String name,String value,boolean isPersistent, String domain) { |
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311 setCookie(request,response,name,value,isPersistent,domain); |
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312 } |
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313 |
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314 public void remove_cookie(String name, String domain) { |
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315 removeCookie(request,response,name,domain); |
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316 } |
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317 |
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318 |
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319 // static utils |
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320 |
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321 public static String getQueryString(HttpServletRequest request) { |
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322 return getQueryString(request,0); |
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323 } |
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324 |
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325 public static String getQueryString(HttpServletRequest request,int maxValueLen) { |
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326 String method = request.getMethod(); |
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327 if( method.equals("GET") ) |
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328 return request.getQueryString(); |
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329 if( !method.equals("POST") && !method.equals("HEAD") ) |
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330 throw new RuntimeException(method); |
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331 Enumeration en = request.getParameterNames(); |
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332 StringBuilder queryBuf = new StringBuilder(); |
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333 if( !en.hasMoreElements() ) |
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334 return null; |
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335 do { |
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336 String param = (String)en.nextElement(); |
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337 String value = request.getParameter(param); |
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338 if( maxValueLen > 0 ) { |
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339 int len = value.length(); |
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340 if( len > maxValueLen ) |
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341 value = value.substring(0,maxValueLen) + "..." + (len-maxValueLen); |
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342 } |
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343 queryBuf.append(param); |
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344 queryBuf.append('='); |
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345 queryBuf.append(value); |
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346 queryBuf.append('&'); |
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347 } while( en.hasMoreElements() ); |
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348 queryBuf.deleteCharAt(queryBuf.length() - 1); |
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349 return queryBuf.toString(); |
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350 } |
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351 |
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352 public static String getCurrentURL(HttpServletRequest request) { |
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353 return getCurrentURL(request,0); |
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354 } |
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355 |
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356 public static String getCurrentURL(HttpServletRequest request,int maxValueLen) { |
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357 // StringBuffer buf = HttpUtils.getRequestURL(request); |
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358 StringBuffer buf = request.getRequestURL(); |
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359 String qStr = getQueryString(request,maxValueLen); |
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360 if(qStr != null && qStr.length() > 0) { |
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361 buf.append('?'); |
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362 buf.append(qStr); |
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363 } |
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364 return buf.toString(); |
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365 } |
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366 |
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367 private static String escape(String value) { |
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368 return value.replaceAll(";", "%3B"); |
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369 } |
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370 |
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371 private static String unescape(String value) { |
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372 return value.replaceAll("%3B", ";"); |
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373 } |
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374 |
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375 private static Cookie getCookie(HttpServletRequest request,String name) { |
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376 Cookie[] cookies = request.getCookies(); |
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377 if( cookies == null ) |
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378 return null; |
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379 for (Cookie cookie : cookies) { |
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380 if (cookie.getName().equals(name)) |
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381 return cookie; |
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382 } |
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383 return null; |
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384 } |
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385 |
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386 public static String getCookieValue(HttpServletRequest request,String name) { |
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387 Cookie cookie = getCookie(request,name); |
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388 return cookie==null ? null : unescape(cookie.getValue()); |
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389 } |
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390 |
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391 public static void setCookie(HttpServletRequest request,HttpServletResponse response,String name,String value,boolean isPersistent, String domain) { |
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392 Cookie cookie = getCookie(request,name); |
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393 if( cookie==null || !cookie.getValue().equals(value) ) { |
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394 cookie = new Cookie(name, escape(value)); |
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395 cookie.setPath("/"); |
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396 if (domain != null && domain.length() > 0) |
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397 cookie.setDomain(domain); |
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398 if( isPersistent ) |
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399 cookie.setMaxAge(10000000); |
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400 response.addCookie(cookie); |
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401 } |
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402 } |
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403 |
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404 public static void removeCookie(HttpServletRequest request, |
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405 HttpServletResponse response, |
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406 String name, |
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407 String domain |
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408 ) { |
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409 Cookie cookie = getCookie(request, name); |
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410 if(cookie != null) { |
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411 Cookie delCookie = new Cookie(name, "delete"); |
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412 delCookie.setPath("/"); |
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413 delCookie.setMaxAge(0); |
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414 if (domain != null && domain.length() > 0) |
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415 delCookie.setDomain(domain); |
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416 response.addCookie(delCookie); |
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417 } |
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418 } |
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419 |
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420 |
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421 |
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422 // util classes |
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423 |
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424 static final class EnumerationIterator<E> implements Iterator<E> { |
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425 private final Enumeration<E> en; |
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426 |
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427 EnumerationIterator(Enumeration<E> en) { |
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428 this.en = en; |
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429 } |
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430 |
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431 @Override public boolean hasNext() { |
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432 return en.hasMoreElements(); |
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433 } |
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434 |
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435 @Override public E next() { |
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436 return en.nextElement(); |
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437 } |
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438 |
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439 @Override public void remove() { |
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440 throw new UnsupportedOperationException(); |
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441 } |
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442 } |
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443 |
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444 private static abstract class NameTable extends AbstractLuanTable { |
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445 abstract Object get(String name); |
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446 abstract Iterator<String> names(); |
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447 |
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448 @Override public final Object get(Object key) { |
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449 if( !(key instanceof String) ) |
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450 return null; |
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451 String name = (String)key; |
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452 return get(name); |
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453 } |
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454 |
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455 @Override public final Iterator<Map.Entry<Object,Object>> iterator() { |
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456 return new Iterator<Map.Entry<Object,Object>>() { |
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457 Iterator<String> names = names(); |
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458 |
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459 @Override public boolean hasNext() { |
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460 return names.hasNext(); |
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461 } |
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462 @Override public Map.Entry<Object,Object> next() { |
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463 String name = names.next(); |
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464 Object val = get(name); |
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465 return new AbstractMap.SimpleEntry<Object,Object>(name,val); |
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466 } |
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467 @Override public void remove() { |
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468 throw new UnsupportedOperationException(); |
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469 } |
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470 }; |
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471 } |
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472 }; |
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473 |
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474 private static String string(Object value) { |
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475 if( !(value instanceof String) ) |
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476 throw new IllegalArgumentException("value must be string"); |
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477 return (String)value; |
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478 } |
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479 } |