中文转换

请问一下以下编码格式怎么用java转换为中文：河北
在百度里百度一下就可以看到中文，但是用java程序怎么转换呢，谢谢大家！

[code="java"]import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.text.DecimalFormat;

import org.apache.commons.codec.binary.Base64;

/**

• 字符转换类

• */
  public class StringUtil {

  private static DecimalFormat df=new DecimalFormat("#.0");
  /**

  • 判断指定的字符串是否为数字
  • @param str 字符串

  • @return 返回boolean
    */
    public static boolean isNum(String str) {
    String regex = "0123456789";

    if(str == null)
    return false;

    if(str.length() ==0)
    return false;

    for(int i=0;i<str.length();i++) {
    if(regex.indexOf(str.charAt(i)) == -1)
    return false;
    }
    return true;
    }

  /**

  • 把字符串中的带‘与"转成\'与\"
  • @param orgStr
  • @return */ public static String convertQuot(String orgStr) { return orgStr.replace("'", "\'").replace("\"", "\\""); }

  public static synchronized String encryptSha256(String inputStr) {
  try {
  MessageDigest md = MessageDigest.getInstance("SHA-256");

      byte digest[] = md.digest(inputStr.getBytes("UTF-8"));
  
      return new String(Base64.encodeBase64(digest));
  
      // return (new BASE64Encoder()).encode(digest);
      // return new String(Hex.encodeHex(digest));
  } catch (Exception e) {
      return null;
  }
  

  }

  /**

  • HTML实体编码转成普通的编码
  • @param dataStr

  • @return
    */
    public static String htmlEntityToString(final String dataStr) {
    int start = 0;
    int end = 0;
    final StringBuffer buffer = new StringBuffer();
    while (start > -1) {
    int system = 10;//进制
    if(start==0){
    int t = dataStr.indexOf("&#");
    if(start!=t)start = t;
    }
    end = dataStr.indexOf(";", start + 2);
    String charStr = "";
    if (end != -1) {
    charStr = dataStr.substring(start + 2, end);
    //判断进制
    char s = charStr.charAt(0);
    if(s=='x' || s=='X'){
    system = 16;
    charStr = charStr.substring(1);
    }
    }
    //转换
    try{
    char letter = (char) Integer.parseInt(charStr,system);
    buffer.append(new Character(letter).toString());
    }catch(NumberFormatException e){
    e.printStackTrace();
    }

    //处理当前unicode字符到下一个unicode字符之间的非unicode字符
    start = dataStr.indexOf("&#",end);
    if(start-end>1){
        buffer.append(dataStr.substring(end+1, start));
    }
    
    //处理最后面的非unicode字符
    if(start==-1){
        int length = dataStr.length();
        if(end+1!=length){
            buffer.append(dataStr.substring(end+1,length));
        }
    }
    

    }
    return buffer.toString();
    }

  /**

  • 把String转成html实体字符
  • @param str

  • @return
    */
    public static String stringToHtmlEntity(String str)
    {
    StringBuffer sb=new StringBuffer();
    for (int i = 0; i < str.length(); i++) {
    char c = str.charAt(i);

     switch (c) {
        case 0x0A:
           sb.append(c);
           break;
    
        case '<':
           sb.append("&lt;");
           break;
    
        case '>':
           sb.append("&gt;");
           break;
    
        case '&':
           sb.append("&amp;");
           break;
    
        case '\'':
           sb.append("&apos;");
           break;
    
        case '"':
           sb.append("&quot;");
           break;
    
        default:
           if ((c < ' ') || (c > 0x7E)) {
              sb.append("&#x");
              sb.append(Integer.toString(c, 16));
              sb.append(';');
           } else {
              sb.append(c);
           }
     }
    

    }
    return sb.toString();
    }

  // 转unicode
  public static String stringToUnicode(String s) {
  String unicode = "";
  char[] charAry = new char[s.length()];
  for(int i=0; i<charAry.length; i++) {
  charAry[i] = (char)s.charAt(i);
  unicode+="\u" + Integer.toString(charAry[i], 16);
  }
  return unicode;
  }

  public static String unicodeToString(String unicodeStr){
  StringBuffer sb = new StringBuffer();
  String str[] = unicodeStr.toUpperCase().split("\\U");
  for(int i=0;i<str.length;i++){
  if(str[i].equals("")) continue;
  char c = (char)Integer.parseInt(str[i].trim(),16);
  sb.append(c);
  }
  return sb.toString();
  }

  public static String html2Text(String inputString) {
  String htmlStr = inputString; // 含html标签的字符串
  String textStr = "";
  java.util.regex.Pattern p_script;
  java.util.regex.Matcher m_script;
  java.util.regex.Pattern p_style;
  java.util.regex.Matcher m_style;
  java.util.regex.Pattern p_html;
  java.util.regex.Matcher m_html;

  try {
      String regEx_script = "<[\\s]*?script[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?script[\\s]*?>"; // 定义script的正则表达式{或<script>]*?>[\s\S]*?<\/script>
                                                                                                  // }
      String regEx_style = "<[\\s]*?style[^>]*?>[\\s\\S]*?<[\\s]*?\\/[\\s]*?style[\\s]*?>"; // 定义style的正则表达式{或<style>]*?>[\s\S]*?<\/style>
                                                                                              // }
      String regEx_html = "<[^>]+>"; // 定义HTML标签的正则表达式
  
      p_script = java.util.regex.Pattern.compile(regEx_script,
              java.util.regex.Pattern.CASE_INSENSITIVE);
      m_script = p_script.matcher(htmlStr);
      htmlStr = m_script.replaceAll(""); // 过滤script标签
  
      p_style = java.util.regex.Pattern.compile(regEx_style,
              java.util.regex.Pattern.CASE_INSENSITIVE);
      m_style = p_style.matcher(htmlStr);
      htmlStr = m_style.replaceAll(""); // 过滤style标签
  
      p_html = java.util.regex.Pattern.compile(regEx_html,
              java.util.regex.Pattern.CASE_INSENSITIVE);
      m_html = p_html.matcher(htmlStr);
      htmlStr = m_html.replaceAll(""); // 过滤html标签
  
      textStr = htmlStr;
  
  } catch (Exception e) {
      System.err.println("Html2Text: " + e.getMessage());
  }
  
  return textStr;// 返回文本字符串
  

  }

  /**

  • escape编码
  • @param src
  • @return */ public static String escape(String src) { int i; char j; StringBuffer tmp = new StringBuffer(); tmp.ensureCapacity(src.length() * 6); for (i = 0; i < src.length(); i++) { j = src.charAt(i); if (Character.isDigit(j) || Character.isLowerCase(j) || Character.isUpperCase(j)) tmp.append(j); else if (j < 256) { tmp.append("%"); if (j < 16) tmp.append("0"); tmp.append(Integer.toString(j, 16)); } else { tmp.append("%u"); tmp.append(Integer.toString(j, 16)); } } return tmp.toString(); }

  public static String unescape(String src) {
  StringBuffer tmp = new StringBuffer();
  tmp.ensureCapacity(src.length());
  int lastPos = 0, pos = 0;
  char ch;
  while (lastPos < src.length()) {
  pos = src.indexOf("%", lastPos);
  if (pos == lastPos) {
  if (src.charAt(pos + 1) == 'u') {
  ch = (char) Integer.parseInt(
  src.substring(pos + 2, pos + 6), 16);
  tmp.append(ch);
  lastPos = pos + 6;
  } else {
  ch = (char) Integer.parseInt(
  src.substring(pos + 1, pos + 3), 16);
  tmp.append(ch);
  lastPos = pos + 3;
  }
  } else {
  if (pos == -1) {
  tmp.append(src.substring(lastPos));
  lastPos = src.length();
  } else {
  tmp.append(src.substring(lastPos, pos));
  lastPos = pos;
  }
  }
  }
  return tmp.toString();
  }

  public static String formatDou2Str(Double d){
  if(d==null)
  return "0";
  return df.format(d);
  }

  public static String decodeStr(String encodeparam) {
  try {
  if(encodeparam == null || "".equalsIgnoreCase(encodeparam)) {
  return null;
  }
  return java.net.URLDecoder.decode(encodeparam, "UTF-8");
  } catch (UnsupportedEncodingException e) {
  e.printStackTrace();
  return null;
  }
  }

  public static void main(String[] args) {
  System.out.println(StringUtil.htmlEntityToString("河北 "));
  }
  }[/code]

工具类http://code.btboys.com/Index/view/id/13.html