Mercurial Hosting > luan
annotate web/src/luan/modules/web/HttpLuan.java @ 221:ec016471c6eb
make LuanTable an interface
git-svn-id: https://luan-java.googlecode.com/svn/trunk@222 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Thu, 17 Jul 2014 07:49:26 +0000 |
parents | 92f5d74697f8 |
children | b76fcb72d97d |
rev | line source |
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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.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 javax.servlet.http.HttpSession; |
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14 import luan.Luan; |
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15 import luan.LuanState; |
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16 import luan.LuanFunction; |
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17 import luan.LuanElement; |
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18 import luan.LuanException; |
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19 import luan.LuanTable; |
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20 import luan.LuanJavaFunction; |
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21 import luan.LuanExitException; |
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22 import luan.DeepCloner; |
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23 import luan.modules.PackageLuan; |
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24 import luan.modules.IoLuan; |
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25 |
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26 |
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27 public final class HttpLuan { |
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28 |
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29 public static final LuanFunction LOADER = new LuanFunction() { |
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30 @Override public Object call(LuanState luan,Object[] args) { |
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31 LuanTable module = Luan.newTable(); |
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32 try { |
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33 addStatic( module, "new_luan_handler", LuanState.class ); |
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34 } catch(NoSuchMethodException e) { |
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35 throw new RuntimeException(e); |
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36 } |
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37 return module; |
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38 } |
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39 }; |
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40 |
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41 private static void addStatic(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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42 t.put( method, new LuanJavaFunction(HttpLuan.class.getMethod(method,parameterTypes),null) ); |
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43 } |
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44 |
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45 public static LuanHandler new_luan_handler(LuanState luan) { |
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46 return new LuanHandler(luan); |
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47 } |
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48 |
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49 public static boolean service(LuanState luan,HttpServletRequest request,HttpServletResponse response,String modName) |
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50 throws LuanException |
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51 { |
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52 LuanFunction fn; |
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53 synchronized(luan) { |
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54 Object mod = PackageLuan.load(luan,modName); |
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55 if( mod==null ) |
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56 return false; |
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57 if( !(mod instanceof LuanTable) ) |
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58 throw luan.exception( "module '"+modName+"' must return a table" ); |
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59 LuanTable tbl = (LuanTable)mod; |
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60 if( Luan.toBoolean( tbl.get("per_session") ) ) { |
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61 HttpSession session = request.getSession(); |
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62 LuanState sessionLuan = (LuanState)session.getValue("luan"); |
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63 if( sessionLuan!=null ) { |
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64 luan = sessionLuan; |
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65 } else { |
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66 DeepCloner cloner = new DeepCloner(); |
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67 luan = cloner.deepClone(luan); |
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68 session.putValue("luan",luan); |
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69 } |
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70 tbl = (LuanTable)PackageLuan.require(luan,modName); |
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71 fn = (LuanFunction)tbl.get("service"); |
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72 } else { |
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73 fn = (LuanFunction)tbl.get("service"); |
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74 if( fn == null ) |
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75 throw luan.exception( "function 'service' is not defined" ); |
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76 DeepCloner cloner = new DeepCloner(); |
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77 luan = cloner.deepClone(luan); |
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78 fn = cloner.get(fn); |
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79 } |
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80 } |
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81 |
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82 LuanTable module = (LuanTable)PackageLuan.loaded(luan).get("web/Http"); |
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83 if( module == null ) |
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84 throw luan.exception( "module 'web/Http' not defined" ); |
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85 HttpLuan lib = new HttpLuan(request,response); |
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86 try { |
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87 module.put( "request", lib.requestTable() ); |
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88 module.put( "response", lib.responseTable() ); |
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89 module.put( "cookie", lib.cookieTable() ); |
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90 module.put( "session", lib.sessionTable() ); |
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91 /* |
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92 module.put( "write", new LuanJavaFunction( |
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93 HttpLuan.class.getMethod( "text_write", LuanState.class, new Object[0].getClass() ), lib |
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94 ) ); |
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95 */ |
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96 } catch(NoSuchMethodException e) { |
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97 throw new RuntimeException(e); |
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98 } |
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99 |
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100 luan.call(fn,"<http>"); |
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101 return true; |
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102 } |
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103 |
136
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104 |
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105 |
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106 private final HttpServletRequest request; |
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107 private final HttpServletResponse response; |
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108 // private PrintWriter writer = null; |
136
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109 // private ServletOutputStream sos = null; |
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110 |
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111 private HttpLuan(HttpServletRequest request,HttpServletResponse response) { |
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112 this.request = request; |
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113 this.response = response; |
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114 } |
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115 |
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116 private LuanTable requestTable() throws NoSuchMethodException { |
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117 LuanTable tbl = Luan.newTable(); |
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118 tbl.put("java",request); |
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119 add( tbl, "get_parameter", String.class ); |
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120 tbl.put( "get_header", new LuanJavaFunction( |
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121 HttpServletRequest.class.getMethod("getHeader",String.class), request |
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122 ) ); |
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123 tbl.put( "get_method", new LuanJavaFunction( |
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124 HttpServletRequest.class.getMethod("getMethod"), request |
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125 ) ); |
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126 tbl.put( "get_servlet_path", new LuanJavaFunction( |
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127 HttpServletRequest.class.getMethod("getServletPath"), request |
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128 ) ); |
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129 tbl.put( "get_server_name", new LuanJavaFunction( |
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130 HttpServletRequest.class.getMethod("getServerName"), request |
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131 ) ); |
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132 add( tbl, "get_current_url" ); |
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133 tbl.put( "get_remote_address", new LuanJavaFunction( |
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134 HttpServletRequest.class.getMethod("getRemoteAddr"), request |
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135 ) ); |
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136 return tbl; |
136
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137 } |
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138 |
136
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139 private LuanTable responseTable() throws NoSuchMethodException { |
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140 LuanTable tbl = Luan.newTable(); |
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141 tbl.put("java",response); |
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142 add( tbl, "send_redirect", String.class ); |
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143 add( tbl, "send_error", Integer.TYPE, String.class ); |
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144 tbl.put( "contains_header", new LuanJavaFunction( |
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145 HttpServletResponse.class.getMethod("containsHeader",String.class), response |
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146 ) ); |
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147 tbl.put( "set_header", new LuanJavaFunction( |
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148 HttpServletResponse.class.getMethod("setHeader",String.class,String.class), response |
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149 ) ); |
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150 tbl.put( "set_content_type", new LuanJavaFunction( |
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151 HttpServletResponse.class.getMethod("setContentType",String.class), response |
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152 ) ); |
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153 tbl.put( "set_character_encoding", new LuanJavaFunction( |
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154 HttpServletResponse.class.getMethod("setCharacterEncoding",String.class), response |
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155 ) ); |
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156 add( tbl, "text_writer" ); |
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157 return tbl; |
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158 } |
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159 |
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160 private LuanTable cookieTable() throws NoSuchMethodException { |
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161 LuanTable tbl = Luan.newTable(); |
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162 tbl.put( "get", new LuanJavaFunction( |
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163 HttpLuan.class.getMethod("get_cookie",String.class), this |
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164 ) ); |
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165 tbl.put( "set", new LuanJavaFunction( |
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166 HttpLuan.class.getMethod("set_cookie", String.class, String.class, Boolean.TYPE, String.class), this |
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167 ) ); |
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168 tbl.put( "remove", new LuanJavaFunction( |
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169 HttpLuan.class.getMethod("remove_cookie", String.class, String.class), this |
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170 ) ); |
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171 return tbl; |
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172 } |
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173 |
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174 private LuanTable sessionTable() throws NoSuchMethodException { |
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175 LuanTable tbl = Luan.newTable(); |
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176 tbl.put( "get_attribute", new LuanJavaFunction( |
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177 HttpLuan.class.getMethod("get_session_attribute",String.class), this |
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178 ) ); |
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179 tbl.put( "set_attribute", new LuanJavaFunction( |
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180 HttpLuan.class.getMethod("set_session_attribute",String.class, Object.class), this |
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181 ) ); |
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182 return tbl; |
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183 } |
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184 |
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185 private void add(LuanTable t,String method,Class<?>... parameterTypes) throws NoSuchMethodException { |
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186 t.put( method, new LuanJavaFunction(HttpLuan.class.getMethod(method,parameterTypes),this) ); |
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187 } |
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188 /* |
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189 public void text_write(LuanState luan,Object... args) throws LuanException, IOException { |
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190 if( writer == null ) |
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191 writer = response.getWriter(); |
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192 for( Object obj : args ) { |
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193 writer.print( luan.toString(obj) ); |
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194 } |
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195 } |
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196 */ |
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197 public LuanTable text_writer() throws IOException { |
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198 return IoLuan.textWriter(response.getWriter()); |
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199 } |
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200 |
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201 public Object get_parameter(String name) { |
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202 String[] a = request.getParameterValues(name); |
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203 return a==null ? null : a.length==1 ? a[0] : a; |
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204 } |
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205 |
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206 public String get_cookie(String name) { |
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207 return getCookieValue(request, name); |
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208 } |
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209 |
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210 public String get_current_url() { |
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211 return getCurrentURL(request); |
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212 } |
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213 |
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214 public void send_redirect(String redirectUrl) |
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215 throws IOException |
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216 { |
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217 response.sendRedirect(redirectUrl); |
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218 throw new LuanExitException(); |
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219 } |
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220 |
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221 public void send_error(int code,String text) |
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222 throws IOException |
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223 { |
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224 response.sendError(code, text); |
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225 throw new LuanExitException(); |
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226 } |
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227 |
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228 public void set_cookie(String name,String value,boolean isPersistent, String domain) { |
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229 setCookie(request,response,name,value,isPersistent,domain); |
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230 } |
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231 |
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232 public void remove_cookie(String name, String domain) { |
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233 removeCookie(request,response,name,domain); |
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234 } |
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235 |
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236 public Object get_session_attribute(String name) { |
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237 return request.getSession().getAttribute(name); |
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238 } |
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239 |
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240 public void set_session_attribute(String name,Object value) { |
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241 request.getSession().setAttribute(name,value); |
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242 } |
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243 |
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244 |
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245 // static utils |
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246 |
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247 public static String getQueryString(HttpServletRequest request) { |
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248 return getQueryString(request,0); |
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249 } |
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250 |
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251 public static String getQueryString(HttpServletRequest request,int maxValueLen) { |
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252 String method = request.getMethod(); |
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253 if( method.equals("GET") ) |
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254 return request.getQueryString(); |
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255 if( !method.equals("POST") && !method.equals("HEAD") ) |
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256 throw new RuntimeException(method); |
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257 Enumeration en = request.getParameterNames(); |
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258 StringBuilder queryBuf = new StringBuilder(); |
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259 if( !en.hasMoreElements() ) |
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260 return null; |
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261 do { |
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262 String param = (String)en.nextElement(); |
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263 String value = request.getParameter(param); |
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264 if( maxValueLen > 0 ) { |
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265 int len = value.length(); |
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266 if( len > maxValueLen ) |
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267 value = value.substring(0,maxValueLen) + "..." + (len-maxValueLen); |
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268 } |
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269 queryBuf.append(param); |
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270 queryBuf.append('='); |
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271 queryBuf.append(value); |
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272 queryBuf.append('&'); |
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273 } while( en.hasMoreElements() ); |
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274 queryBuf.deleteCharAt(queryBuf.length() - 1); |
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275 return queryBuf.toString(); |
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276 } |
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277 |
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278 public static String getCurrentURL(HttpServletRequest request) { |
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279 return getCurrentURL(request,0); |
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280 } |
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281 |
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282 public static String getCurrentURL(HttpServletRequest request,int maxValueLen) { |
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283 // StringBuffer buf = HttpUtils.getRequestURL(request); |
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284 StringBuffer buf = request.getRequestURL(); |
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285 String qStr = getQueryString(request,maxValueLen); |
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286 if(qStr != null && qStr.length() > 0) { |
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287 buf.append('?'); |
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288 buf.append(qStr); |
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289 } |
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290 return buf.toString(); |
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291 } |
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292 |
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293 private static String escape(String value) { |
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294 return value.replaceAll(";", "%3B"); |
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295 } |
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296 |
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297 private static String unescape(String value) { |
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298 return value.replaceAll("%3B", ";"); |
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299 } |
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300 |
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301 private static Cookie getCookie(HttpServletRequest request,String name) { |
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302 Cookie[] cookies = request.getCookies(); |
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303 if( cookies == null ) |
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304 return null; |
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305 for (Cookie cookie : cookies) { |
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306 if (cookie.getName().equals(name)) |
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307 return cookie; |
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308 } |
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309 return null; |
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310 } |
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311 |
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312 public static String getCookieValue(HttpServletRequest request,String name) { |
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313 Cookie cookie = getCookie(request,name); |
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314 return cookie==null ? null : unescape(cookie.getValue()); |
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315 } |
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316 |
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317 public static void setCookie(HttpServletRequest request,HttpServletResponse response,String name,String value,boolean isPersistent, String domain) { |
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318 Cookie cookie = getCookie(request,name); |
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319 if( cookie==null || !cookie.getValue().equals(value) ) { |
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320 cookie = new Cookie(name, escape(value)); |
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321 cookie.setPath("/"); |
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322 if (domain != null && domain.length() > 0) |
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323 cookie.setDomain(domain); |
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324 if( isPersistent ) |
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325 cookie.setMaxAge(10000000); |
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326 response.addCookie(cookie); |
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327 } |
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328 } |
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329 |
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330 public static void removeCookie(HttpServletRequest request, |
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331 HttpServletResponse response, |
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332 String name, |
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333 String domain |
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334 |
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335 ) { |
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336 Cookie cookie = getCookie(request, name); |
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337 if(cookie != null) { |
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338 Cookie delCookie = new Cookie(name, "delete"); |
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339 delCookie.setPath("/"); |
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340 delCookie.setMaxAge(0); |
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341 if (domain != null && domain.length() > 0) |
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342 delCookie.setDomain(domain); |
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343 response.addCookie(delCookie); |
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344 } |
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345 } |
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346 |
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347 } |