Java-CharTools工具类

package com.gootrip.util;import java.io.UnsupportedEncodingException;/*** <p>Title:字符编码工具类 </p>* <p>Description:  </p>* <p>Copyright:  Copyright (c) 2007</p>* <p>Company:  </p>* @author: * @version 1.0*/public class CharTools {  /**   * 转换编码 ISO-8859-1到GB2312   * @param text   * @return   */  public static final String ISO2GB(String text) {    String result = "";    try {      result = new String(text.getBytes("ISO-8859-1"), "GB2312");    }    catch (UnsupportedEncodingException ex) {      result = ex.toString();    }    return result;  }  /**   * 转换编码 GB2312到ISO-8859-1   * @param text   * @return   */  public static final String GB2ISO(String text) {    String result = "";    try {      result = new String(text.getBytes("GB2312"), "ISO-8859-1");    }    catch (UnsupportedEncodingException ex) {      ex.printStackTrace();    }    return result;  }  /**   * Utf8URL编码   * @param s   * @return   */  public static final String Utf8URLencode(String text) {    StringBuffer result = new StringBuffer();    for (int i = 0; i < text.length(); i++) {      char c = text.charAt(i);      if (c >= 0 && c <= 255) {        result.append(c);      }else {        byte[] b = new byte[0];        try {          b = Character.toString(c).getBytes("UTF-8");        }catch (Exception ex) {        }        for (int j = 0; j < b.length; j++) {          int k = b[j];          if (k < 0) k += 256;          result.append("%" + Integer.toHexString(k).toUpperCase());        }      }    }    return result.toString();  }  /**   * Utf8URL解码   * @param text   * @return   */  public static final String Utf8URLdecode(String text) {    String result = "";    int p = 0;    if (text!=null && text.length()>0){      text = text.toLowerCase();      p = text.indexOf("%e");      if (p == -1) return text;      while (p != -1) {        result += text.substring(0, p);        text = text.substring(p, text.length());        if (text == "" || text.length() < 9) return result;        result += CodeToWord(text.substring(0, 9));        text = text.substring(9, text.length());        p = text.indexOf("%e");      }    }    return result + text;  }  /**   * utf8URL编码转字符   * @param text   * @return   */  private static final String CodeToWord(String text) {    String result;    if (Utf8codeCheck(text)) {      byte[] code = new byte[3];      code[0] = (byte) (Integer.parseInt(text.substring(1, 3), 16) - 256);      code[1] = (byte) (Integer.parseInt(text.substring(4, 6), 16) - 256);      code[2] = (byte) (Integer.parseInt(text.substring(7, 9), 16) - 256);      try {        result = new String(code, "UTF-8");      }catch (UnsupportedEncodingException ex) {        result = null;      }    }    else {      result = text;    }    return result;  }  /**   * 编码是否有效   * @param text   * @return   */  private static final boolean Utf8codeCheck(String text){    String sign = "";    if (text.startsWith("%e"))      for (int i = 0, p = 0; p != -1; i++) {        p = text.indexOf("%", p);        if (p != -1)          p++;        sign += p;      }    return sign.equals("147-1");  }  /**   * 判断是否Utf8Url编码   * @param text   * @return   */  public static final boolean isUtf8Url(String text) {    text = text.toLowerCase();    int p = text.indexOf("%");    if (p != -1 && text.length() - p > 9) {      text = text.substring(p, p + 9);    }    return Utf8codeCheck(text);  }  /**   * 测试   * @param args   */  public static void main(String[] args) {    //CharTools charTools = new CharTools();    String url;    url = "http://www.google.com/search?hl=zh-CN&newwindow=1&q=%E4%B8%AD%E5%9B%BD%E5%A4%A7%E7%99%BE%E7%A7%91%E5%9C%A8%E7%BA%BF%E5%85%A8%E6%96%87%E6%A3%80%E7%B4%A2&btnG=%E6%90%9C%E7%B4%A2&lr=";    if(CharTools.isUtf8Url(url)){      System.out.println(CharTools.Utf8URLdecode(url));    }else{      //System.out.println(URLDecoder.decode(url));    }    url = "http://www.baidu.com/baidu?word=%D6%D0%B9%FA%B4%F3%B0%D9%BF%C6%D4%DA%CF%DF%C8%AB%CE%C4%BC%EC%CB%F7&tn=myie2dg";    if(CharTools.isUtf8Url(url)){      System.out.println(CharTools.Utf8URLdecode(url));    }else{      //System.out.println(URLDecoder.decode(url));    }  }}