Big5)字符串转化的JAVA方式实现" href="http://pingyuan.itpub.net/entry/19" rel="bookmark" snap_preview_added="no">繁简体(GB<=>Big5)字符串转化的JAVA方式实现[@more@]本文提供一个java实现中文字符繁简体互换的zip包以及主要的源代码实现说明。
直接调用GB2Big5只适用于对于少量字符的转化，当需要对整个jsp页面根据用户需要进行编码转化
的时候，就需要使用到taglib的功能。
具体配置使用步骤如下：
| package zeal.util; | |
| 2 | |
| 3 | import java.io.*; |
| 4 | |
| 5 | /** |
| 6 | * 用来处理GB2312/BIG5码字符互相转换的类. |
| 7 | * 需要两个码表文件: |
| 8 | * /zeal/util/gb-big5.table,/zeal/util/big5-gb.table. |
| 9 | * 这两个码表可以根据具体情况补充映射不正确的码. |
| 10 | * Title: GB<=>Big5 |
| 11 | * Description: Deal with the convertion |
| 12 | * between gb2312 and big5 charset Strings. |
| 13 | * Copyright: Copyright (c) 2004 |
| 14 | * Company: zeali.net |
| 15 | * @author Zeal Li |
| 16 | * @version 1.0 |
| 17 | * |
| 18 | * @see zeal.util.StreamConverter |
| 19 | */ |
| 20 | |
| 21 | public class GB2Big5{ |
| 22 | private static GB2Big5 pInstance = null; |
| 23 | private String s_big5TableFile = null; |
| 24 | private String s_gbTableFile = null; |
| 25 | private byte[] b_big5Table = null; |
| 26 | private byte[] b_gbTable = null; |
| 27 | |
| 28 | /** 指定两个码表文件来进行初始化 */ |
| 29 | private GB2Big5(String sgbTableFile,String sbig5TableFile) |
| 30 | throws NullPointerException{ |
| 31 | s_big5TableFile = sbig5TableFile; |
| 32 | s_gbTableFile = sgbTableFile; |
| 33 | if(null == b_gbTable){ |
| 34 | b_gbTable = getBytesFromFile(sgbTableFile); |
| 35 | } |
| 36 | if(null == b_big5Table){ |
| 37 | b_big5Table = getBytesFromFile(sbig5TableFile); |
| 38 | } |
| 39 | if(null == b_gbTable){ |
| 40 | throw |
| 41 | new NullPointerException("No gb table can be load"); |
| 42 | } |
| 43 | if(null == b_big5Table){ |
| 44 | throw |
| 45 | new NullPointerException("No big5 table can be load"); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | public static synchronized GB2Big5 getInstance(){ |
| 50 | //return getInstance("d:gb-big5.table","d:big5-gb.table"); |
| 51 | return getInstance("/zeal/util/gb-big5.table", |
| 52 | "/zeal/util/big5-gb.table"); |
| 53 | } |
| 54 | |
| 55 | public static synchronized GB2Big5 getInstance(String sgbTableFile, |
| 56 | String sbig5TableFile){ |
| 57 | if(null == pInstance){ |
| 58 | try{ |
| 59 | pInstance = new GB2Big5(sgbTableFile,sbig5TableFile); |
| 60 | } |
| 61 | catch(Exception e){ |
| 62 | System.err.println(e.toString()); |
| 63 | pInstance = null; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | return pInstance; |
| 68 | } |
| 69 | |
| 70 | /** 把gbChar对应的big5字符替换掉，用来更新码表文件. |
| 71 | * 一般当发现字符映射不正确的时候可以通过这个方法来校正. */ |
| 72 | protected synchronized void resetBig5Char(String gbChar,String big5Char) |
| 73 | throws Exception{ |
| 74 | byte[] Text = new String(gbChar.getBytes(),"GBK").getBytes("GBK"); |
| 75 | byte[] TextBig5 = new String(big5Char.getBytes(), |
| 76 | "BIG5").getBytes("BIG5"); |
| 77 | int max = Text.length - 1; |
| 78 | int h = 0; |
| 79 | int l = 0; |
| 80 | int p = 0; |
| 81 | int b = 256; |
| 82 | byte[] big = new byte[2]; |
| 83 | for(int i = 0; i < max; i++){ |
| 84 | h = (int) (Text[i]); |
| 85 | if(h < 0){ |
| 86 | h = b + h; |
| 87 | l = (int) (Text[i + 1]); |
| 88 | if(l < 0){ |
| 89 | l = b + (int) (Text[i + 1]); |
| 90 | } |
| 91 | if(h == 161 && l == 64){ |
| 92 | ; // do nothing |
| 93 | } |
| 94 | else{ |
| 95 | p = (h - 160) * 510 + (l - 1) * 2; |
| 96 | b_gbTable[p] = TextBig5[i]; |
| 97 | b_gbTable[p + 1] = TextBig5[i + 1]; |
| 98 | } |
| 99 | i++; |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | BufferedOutputStream pWriter = |
| 104 | new BufferedOutputStream(new FileOutputStream(s_gbTableFile)); |
| 105 | pWriter.write(b_gbTable,0,b_gbTable.length); |
| 106 | pWriter.close(); |
| 107 | } |
| 108 | |
| 109 | /** 把big5Char对应的gb字符替换掉，用来更新码表文件. |
| 110 | * 一般当发现字符映射不正确的时候可以通过这个方法来校正. */ |
| 111 | protected synchronized void resetGbChar(String big5Char,String gbChar) |
| 112 | throws Exception{ |
| 113 | byte[] TextGb = |
| 114 | new String(gbChar.getBytes(),"GBK").getBytes("GBK"); |
| 115 | byte[] Text = |
| 116 | new String(big5Char.getBytes(),"BIG5").getBytes("BIG5"); |
| 117 | int max = Text.length - 1; |
| 118 | int h = 0; |
| 119 | int l = 0; |
| 120 | int p = 0; |
| 121 | int b = 256; |
| 122 | byte[] big = new byte[2]; |
| 123 | for(int i = 0; i < max; i++){ |
| 124 | h = (int) (Text[i]); |
| 125 | if(h < 0){ |
| 126 | h = b + h; |
| 127 | l = (int) (Text[i + 1]); |
| 128 | if(l < 0){ |
| 129 | l = b + (int) (Text[i + 1]); |
| 130 | } |
| 131 | if(h == 161 && l == 64){ |
| 132 | ; // do nothing |
| 133 | } |
| 134 | else{ |
| 135 | p = (h - 160) * 510 + (l - 1) * 2; |
| 136 | b_big5Table[p] = TextGb[i]; |
| 137 | b_big5Table[p + 1] = TextGb[i + 1]; |
| 138 | } |
| 139 | i++; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | BufferedOutputStream pWriter = |
| 144 | new BufferedOutputStream(new FileOutputStream(s_big5TableFile)); |
| 145 | pWriter.write(b_big5Table,0,b_big5Table.length); |
| 146 | pWriter.close(); |
| 147 | } |
| 148 | |
| 149 | /** 把gb2312编码的字符串转化成big5码的字节流 */ |
| 150 | public byte[] gb2big5(String inStr) throws Exception{ |
| 151 | if(null == inStr || inStr.length() <= 0){ |
| 152 | return "".getBytes(); |
| 153 | //return ""; |
| 154 | } |
| 155 | |
| 156 | byte[] Text = |
| 157 | new String(inStr.getBytes(),"GBK").getBytes("GBK"); |
| 158 | int max = Text.length - 1; |
| 159 | int h = 0; |
| 160 | int l = 0; |
| 161 | int p = 0; |
| 162 | int b = 256; |
| 163 | byte[] big = new byte[2]; |
| 164 | for(int i = 0; i < max; i++){ |
| 165 | h = (int) (Text[i]); |
| 166 | if(h < 0){ |
| 167 | h = b + h; |
| 168 | l = (int) (Text[i + 1]); |
| 169 | if(l < 0){ |
| 170 | l = b + (int) (Text[i + 1]); |
| 171 | } |
| 172 | if(h == 161 && l == 64){ |
| 173 | big[0] = big[1] = (byte) (161 - b); |
| 174 | } |
| 175 | else{ |
| 176 | p = (h - 160) * 510 + (l - 1) * 2; |
| 177 | try{ |
| 178 | big[0] = (byte) (b_gbTable[p] - b); |
| 179 | } |
| 180 | catch(Exception e){ |
| 181 | big[0] = 45; |
| 182 | } |
| 183 | try{ |
| 184 | big[1] = (byte) (b_gbTable[p + 1] - b); |
| 185 | } |
| 186 | catch(Exception e){ |
| 187 | big[1] = 45; |
| 188 | } |
| 189 | } |
| 190 | Text[i] = big[0]; |
| 191 | Text[i + 1] = big[1]; |
| 192 | i++; |
| 193 | } |
| 194 | |
| 195 | } |
| 196 | |
| 197 | return Text; |
| 198 | //return new String(Text); |
| 199 | } |
| 200 | |
| 201 | /** 把big5码的字符串转化成gb2312码的字符串 */ |
| 202 | public String big52gb(String inStr) throws Exception{ |
| 203 | if(null == inStr || inStr.length() <= 0){ |
| 204 | return ""; |
| 205 | } |
| 206 | |
| 207 | byte[] Text = |
| 208 | new String(inStr.getBytes(),"BIG5").getBytes("BIG5"); |
| 209 | int max = Text.length - 1; |
| 210 | int h = 0; |
| 211 | int l = 0; |
| 212 | int p = 0; |
| 213 | int b = 256; |
| 214 | byte[] big = new byte[2]; |
| 215 | for(int i = 0; i < max; i++){ |
| 216 | h = (int) (Text[i]); |
| 217 | if(h < 0){ |
| 218 | h = b + h; |
| 219 | l = (int) (Text[i + 1]); |
| 220 | if(l < 0){ |
| 221 | l = b + (int) (Text[i + 1]); |
| 222 | } |
| 223 | if(h == 161 && l == 161){ |
| 224 | big[0] = (byte) (161 - b); |
| 225 | big[1] = (byte) (64 - b); |
| 226 | } |
| 227 | else{ |
| 228 | p = (h - 160) * 510 + (l - 1) * 2; |
| 229 | try{ |
| 230 | big[0] = (byte) (b_big5Table[p] - b); |
| 231 | } |
| 232 | catch(Exception e){ |
| 233 | big[0] = 45; |
| 234 | } |
| 235 | try{ |
| 236 | big[1] = (byte) (b_big5Table[p + 1] - b); |
| 237 | } |
| 238 | catch(Exception e){ |
| 239 | big[1] = 45; |
| 240 | } |
| 241 | } |
| 242 | Text[i] = big[0]; |
| 243 | Text[i + 1] = big[1]; |
| 244 | i++; |
| 245 | } |
| 246 | |
| 247 | } |
| 248 | |
| 249 | return new String(Text); |
| 250 | } |
| 251 | |
| 252 | /** 把文件读入字节数组，读取失败则返回null */ |
| 253 | private static byte[] getBytesFromFile(String inFileName){ |
| 254 | try{ |
| 255 | InputStream in = |
| 256 | GB2Big5.class.getResourceAsStream(inFileName); |
| 257 | byte[] sContent = StreamConverter.toByteArray(in); |
| 258 | in.close(); |
| 259 | return sContent; |
| 260 | |
| 261 | /* |
| 262 | java.io.RandomAccessFile inStream = |
| 263 | new java.io.RandomAccessFile(inFileName,"r"); |
| 264 | byte[] sContent = new byte[ (int) (inStream.length())]; |
| 265 | inStream.read(sContent); |
| 266 | inStream.close(); |
| 267 | return sContent; |
| 268 | */ |
| 269 | } |
| 270 | catch(Exception e){ |
| 271 | e.printStackTrace(); |
| 272 | return null; |
| 273 | } |
| 274 | } |
| 275 | |
| 276 | public static void main(String[] args) throws Exception{ |
| 277 | if(args.length < 2){ |
| 278 | System.out.println( |
| 279 | "Usage: zeal.util.GB2Big5 [-gb | -big5] inputstring"); |
| 280 | System.exit(1); |
| 281 | return; |
| 282 | } |
| 283 | |
| 284 | boolean bIsGB = true; |
| 285 | String inStr = ""; |
| 286 | for(int i = 0; i < args.length; i++){ |
| 287 | if(args[i].equalsIgnoreCase("-gb")){ |
| 288 | bIsGB = true; |
| 289 | } |
| 290 | else if(args[i].equalsIgnoreCase("-big5")){ |
| 291 | bIsGB = false; |
| 292 | } |
| 293 | else{ |
| 294 | inStr = args[i]; |
| 295 | } |
| 296 | } |
| 297 | |
| 298 | GB2Big5 pTmp = GB2Big5.getInstance(); |
| 299 | |
| 300 | String outStr = ""; |
| 301 | if(bIsGB){ |
| 302 | outStr = pTmp.big52gb(inStr); |
| 303 | } |
| 304 | else{ |
| 305 | outStr = new String(pTmp.gb2big5(inStr),"BIG5"); |
| 306 | } |
| 307 | |
| 308 | System.out.println("String [" + inStr + |
| 309 | "] converted into:n[" + outStr + "]"); |
| 310 | } |
| 311 | } |
的时候，就需要使用到taglib的功能。
具体配置使用步骤如下：
1.在WEB-INF/目录下增加GB2Big5Wrapper.tld文件，内容如下:
xml version="1.0" encoding="ISO-8859-1"?> 2 3 PUBLIC "-//Sun Microsystems, Inc.//DTD JSP Tag Library 1.2//EN" 4 "http://java.sun.om/dtd/web-jsptaglibrary_1_2.dtd"> 5 6 <taglib> 7 <tlib-version>1.0tlib-version> 8 <jsp-version>1.2jsp-version> 9 <short-name>zealLishort-name> 10 <tag> 11 <name>GB2Big5Wrappername> 12 <tag-class>zeal.util.GB2Big5Wrappertag-class> 13 <attribute> 14 <name>isbig5name> 15 <rtexprvalue>truertexprvalue> 16 <type>booleantype> 17 attribute> 18 tag> 19 taglib>
2.在需要进行转化的JSP页面里面加上:
<%@ taglib uri="/WEB-INF/GB2Big5Wrapper.tld" prefix="zealLi"%>
任何你需要转化的东西
比如test.jsp源代码如下 =>
<%@ page 2 contentType="text/html; charset=GBK" 3 4 import="javax.servlet.http.HttpSession" 5 import="java.util.*" 6 import="com.zealLi.*" 7 %><% 8 String encode = request.getParameter("encode"); 9 10 if(null == encode || encode.length() <= 0){ 11 encode = "BIG5"; 12 } 13 boolean isBig5 = false; 14 String charset = "GB2312"; 15 16 if(encode.equalsIgnoreCase("BIG5")){ 17 isBig5 = true; 18 charset = "BIG5"; 19 } 20 String sInfo = "中文字体繁简体转化的测试。"; 21 %><%@ taglib uri="/WEB-INF/GB2Big5Wrapper.tld" prefix="zealLi"%> 22 <zealLi:GB2Big5Wrapper isbig5="<%= isBig5 %>"> 23 <html> 24 <head> 25 <title>Jsp测试页面title> 26 <meta http-equiv="Content-Type" content="text/html; charset=<%=charset%>"> 27 head> 28 <body> 29 <% 30 Calendar now = Calendar.getInstance(); 31 out.println(now.get(Calendar.YEAR) + "." + 32 (now.get(Calendar.MONTH)+1) + "." + 33 now.get(Calendar.DAY_OF_MONTH) + "<p>"); 34 %> 35 <p> 36 <%=sInfo%> 37 body> 38 html>zealLi:GB2Big5Wrapper>
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