stringutils.java

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package com.yhbbs.utils;

import java.io.UnsupportedEncodingException;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.codec.binary.Base64;
import com.yhbbs.user.biz.UserBiz;

/**
 * <p>Title:字符串转换</p>
 * <li>UBB代码,html及字符串的转换</li>
 * <br><b>CopyRight: yyhweb[由由华网]</b>
 * @author stephen
 * @version YHBBS-2.0
 */
public class StringUtils {

		/**
	     * @param ob ob对象
	     * @return 转换后的字符串
	     */
	    public static String getString(Object ob){
	    	
	    	return ob!=null?ob.toString():"";
	    }
	    /**
	     * @param request 当前请求
	     * @return 获取该请求IP
	     */
	    public static String getIP(HttpServletRequest request){
	        String ip = request.getRemoteAddr();
	        return ip != null ? ip : "";
	    }
	    
	    /**
	     * @param str 要分割的字符串
	     * @param sp 分割字符
	     * @return 分割后的字符数组
	     */
	    public static String[] split(String str, String sp)
	    {
	        if(str == null || str.equals(""))
	            return new String[0];
	        else
	            return str.split(sp);
	    }
	    
	    /**
	     * @param str 要转换的字符串
	     * @return 转换后的字符串
	     */
	    public static String htmlEncode(String str) {
	        if (str == null) {
	            str = "";
	            return str;
	        }
	        str = str.trim(); //ȥ����β�ո�
	        //str = replace(str, "<", "&#60;");
	        //str = replace(str, ">", "&#62;");
	        str = replace(str, "\t", "    ");
	        str = replace(str, "\r\n", "\n");
	        str = replace(str, "\n", "<br>");
	        str = replace(str, "  ", " &nbsp;&nbsp;");
	        //str = replace(str, "'", "&#39;");
	        //str = replace(str, "\\", "/");
	        str = replace(str, "\"","&#34;");
	        return str;
	    }

	    /**
	     * @param str 要转换的字符串
	     * @return 转换后的字符串
	     */
	    public static String strEncode(String str) {
	        if (str == null) {
	            str = "";
	            return str;
	        }
	        str = str.trim(); //ȥ����β�ո�
	        str = replace(str, "<", "&#60;");
	        str = replace(str, ">", "&#62;");
	        str = replace(str, "\t", "    ");
	        str = replace(str, "\r\n", "\n");
	        str = replace(str, "\n", "<br>");
	        str = replace(str, "  ", " &nbsp;&nbsp;");
	        str = replace(str, "'", "&#39;");
	        str = replace(str, "\\", "/");
	        str = replace(str, "\"","&#34;");
	        return str;
	    }
	    /**
	     * @param str 待加密字符串
	     * @return 转换后的字符串
	     */
	    public static String encodeString(String str) {
	       try {
	    	   byte[] bt = str.getBytes("UTF-8");
	    	   byte[] enStr = new Base64().encode(bt);
	    	   
	    	   return new String(enStr,"UTF-8");
			}catch (UnsupportedEncodingException e) {
				e.printStackTrace();
			}
	        return "";
	    }
	    /**
	     * @param str 待解密字符串
	     * @return 转换后的字符串
	     */
	    public static String decodeString(String str){
	    	try {
				byte[] bt = str.getBytes("UTF-8");
				byte[] deStr = null;
				if(bt!=null && bt.length>0){
					deStr = (new Base64()).decode(bt);
					return new String(deStr,"UTF-8");
				}
			}
			catch (UnsupportedEncodingException e) {
				e.printStackTrace();
			}
			return "";
	    }

	    /**
	     * @param str 含有UBB代码的字符串
	     * @return 转换后的字符串
	     */
	    public static String ubbEncode(String str){
	        str = replaceB(str);
	        str = replaceI(str);
	        str = replaceU(str);
	        str = replaceCen(str);
	        str = replaceFly(str);
	        str = replaceMove(str);
	        str = replaceF(str);
	        str = replaceS(str);
	        str = replaceC(str);
	        str = replaceURL(str);
	        str = replaceIMG(str);
	        str = replaceEMAIL(str);
	        str = replaceCode(str);
	        str = replaceQuote(str);
	        str = replaceFLASH(str);
	        str = replaceRM(str);
	        str = replaceMP(str);
	        str = replaceQQ(str);
	        str = replaceFILE(str);
	        return str;
	    }

	    // [B]转换为html
	    private static String replaceB(String str){
	        str = replace(str, "[B]", "<b>");
	        str = replace(str, "[/B]", "</b>");
	        return str;
	    }
	    // [I]转换为html
	    private static String replaceI(String str){
	        str = replace(str, "[I]", "<i>");
	        str = replace(str, "[/I]", "</i>");
	        return str;
	    }
	    //	[U]转换为html
	    private static String replaceU(String str){
	        str = replace(str, "[U]", "<u>");
	        str = replace(str, "[/U]", "</u>");
	        return str;
	    }
	    //  [center]转换为html
	    private static String replaceCen(String str){
	        str = replace(str, "[center]", "<div align=center>");
	        str = replace(str, "[/center]", "</div>");
	        return str;
	    }
	    //  [fly]转换为html
	    private static String replaceFly(String str){
	    	str = replace(str, "[fly]", "<marquee width=90% behavior=alternate scrollamount=3>");
	    	str = replace(str, "[/fly]", "</marquee>");
	    	return str;
	    }
	    //   [move]转换为html
	    private static String replaceMove(String str){
	    	str = replace(str, "[move]", "<marquee width=90% scrollamount=3>");
	    	str = replace(str, "[/move]", "</marquee>");
	    	return str;
	    }
	    //	 [code]转换为html
	    private static String replaceCode(String str){
	    	str = replace(str, "[code]", "<b>代码：</b><div class='code'>");
	    	str = replace(str, "[/code]", "</div>");
	    	return str;
	    }
	    //	 [quote]转换为html
	    private static String replaceQuote(String str){
	    	str = replace(str, "[quote]", "<b>引用：</b><div class='quote'>");
	    	str = replace(str, "[/quote]", "</div>");
	    	return str;
	    }
	    //    [font]转换为html
	    private static String replaceF(String str){
	        int strHead = str.indexOf("[font=");
	        int strTail = str.indexOf("[/font]");
	        while((strHead!=-1) && (strTail!=-1)){
	            int strTailLength = strTail+7;
	            String temp = str.substring(strHead+6,strTail);
	            int strHeadRight = temp.indexOf("]");
	            String tempStr = temp.substring(0,strHeadRight);
	            String text = temp.substring(strHeadRight+1,temp.length());
	            str = str.substring(0,strHead)+"<font face=\""+tempStr+"\">"+text+"</font>"+str.substring(strTailLength,str.length());
	            strHead = str.indexOf("[font=",strTailLength);
	            strTail = str.indexOf("[/font]",strTailLength);
	        }
	        return str;
	    }
	    //    [size]��转换为htmlִ�С
	    private static String replaceS(String str){
	        int strHead = str.indexOf("[size=");
	        int strTail = str.indexOf("[/size]");
	        while((strHead!=-1) && (strTail!=-1)){
	            int strTailLength = strTail+7;
	            String temp = str.substring(strHead+6,strTail);
	            int strHeadRight = temp.indexOf("]");
	            String tempStr = temp.substring(0,strHeadRight);
	            String text = temp.substring(strHeadRight+1,temp.length());
	            str = str.substring(0,strHead)+"<font size=\""+tempStr+"\">"+text+"</font>"+str.substring(strTailLength,str.length());
	            strHead = str.indexOf("[size=",strTailLength);
	            strTail = str.indexOf("[/size]",strTailLength);
	        }
	        return str;
	    }
	    //	   [color]转换为htmlִ�С
	    private static String replaceC(String str){
	        int strHead = str.indexOf("[color=");
	        int strTail = str.indexOf("[/color]");
	        while((strHead!=-1) && (strTail!=-1)){
	            int strTailLength = strTail+8;
	            String temp = str.substring(strHead+7,strTail);
	            int strHeadRight = temp.indexOf("]");
	            String tempStr = temp.substring(0,strHeadRight);
	            String text = temp.substring(strHeadRight+1,temp.length());
	            str = str.substring(0,strHead)+"<font color=\""+tempStr+"\">"+text+"</font>"+str.substring(strTailLength,str.length());
	            strHead = str.indexOf("[color=",strTailLength);
	            strTail = str.indexOf("[/color]",strTailLength);
	        }
	        return str;
	    }
	    //	  [url]转换为html
	    private static String replaceURL(String str){
	        int strHead = str.indexOf("[url=");
	        int strTail = str.indexOf("[/url]");
	        while((strHead!=-1) && (strTail!=-1)){
	            int strTailLength = strTail+6;
	            String temp = str.substring(strHead+5,strTail);
	            int strHeadRight = temp.indexOf("]");
	            String tempStr = temp.substring(0,strHeadRight);
	            String text = temp.substring(strHeadRight+1,temp.length());
	            str = str.substring(0,strHead)+"<a href='"+tempStr+"'>"+text+"</a>"+str.substring(strTailLength,str.length());
	            strHead = str.indexOf("[url=",strTailLength);
	            strTail = str.indexOf("[/url]",strTailLength);
	        }
	        return str;
	    }
	    //	[img]转换为html
	    private static String replaceIMG(String str){
	        int strHead = str.indexOf("[img]");
	        int strTail = str.indexOf("[/img]");
	        while((strHead!=-1) && (strTail!=-1)){
	            int strTailLength = strTail+6;
	            String temp = str.substring(strHead+5,strTail);
	            //String text = temp.substring(strHead+5,temp.length());
	            str = str.substring(0,strHead)+"<img src='"+temp+"' />"+str.substring(strTailLength,str.length());
	            strHead = str.indexOf("[img]",strTailLength);
	            strTail = str.indexOf("[/img]",strTailLength);
	        }
	        return str;
	    }

	    //    [email]转换为htmlַ
	    private static String replaceEMAIL(String str){
	        int strHead = str.indexOf("[email]");