mytest.java

BBS论坛设计JSP＋MYSQL

package com.bcxy.bbs.filter;

/**
 * Title:
 * Description:
 * Copyright:
 * Company: www.liyunet.com
 * 
 * @author lishujiang	
 * @version 1.0
 */

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class myTest {
	public static void main(String[] args) throws Exception {
		String s = "url test of ubbtag like [url]nic.biti.edu.cn[/url]"
				+ " and [URL]http://mail.biti.edu.cn[/URL] and [url=file_download.jsp]test[/url] and [url=www.liyunet.com]test[/url]and so on use regex";
		Pattern p = Pattern
				.compile(
						"(\\[(URL)((=(((http://)|(ftp://))?)([^\\[]*))?)\\])((((http://)|(ftp://))?)([^\\[]*))(\\[(\\/URL)\\])",
						Pattern.CASE_INSENSITIVE);
		Matcher m = p.matcher(s);
		StringBuffer sb = new StringBuffer();
		boolean result = m.find();
		while (result) {
			for (int i = 0; i < m.groupCount(); i++)
				System.out.println("m.group(" + i + ") = " + m.group(i));
			m.appendReplacement(sb, "<a href=\"");
			if (!"".equals(m.group(3))) {
				if ("".equals(m.group(5))){
					if (m.group(10) == null){
						sb.append("http://" + m.group(9) + "\" target=_blank>"
								+ m.group(9) + "</a>");
					}else{
						sb.append("" + m.group(9) + "\" target=_blank>"
								+ m.group(10) + "</a>");
					}
				}else if (m.group(10) == null){
					sb.append(m.group(5) + m.group(9) + "\" target=_blank>"
							+ m.group(5) + m.group(9) + "</a>");
				}else{
					sb.append(m.group(5) + m.group(9) + "\" target=_blank>"
							+ m.group(10) + "</a>");
				}
			} else {
				if ("".equals(m.group(11)))
					sb.append("http://" + m.group(10) + "\" target=_blank>"
							+ m.group(10) + "</a>");
				else
					sb.append(m.group(10) + "\" target=_blank>" + m.group(10)
							+ "</a>");
			}
			result = m.find();
		}
		m.appendTail(sb);
		System.out.println(sb.toString());
	}
}