ubb.java

网上购物系统

package tarena.global;

import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
 * UBB代码转换类，负责HTML代码与UBB代码之间的转换。
 * 在本项目中，HTML与UBB的转换是使用的javascript脚本完成，没有使用到此类。
 * 本类只是提供用java实现UBB到HTML转换的一个参考。
 */
public class UBB {
	 //超链接转义
    private static String URL = "<a href='$2' target=_blank>$3</a>";
    //无参数图片转义
    private static String IMG = "<img src='$2'></img>";
    //参数图片转义
    private static String IMG1 ="<img src='$4' width=\"$2\" hight=\"$3\"></img>";
   
    private static String ALIGN = "<p align=\"$2\">$3</a>";

    private static String I = "<i>$2</i>";

    private static String LI = "<li>$2</li>";

    private static String B = "<b>$2</b>";

    private static String U = "<u>$2</u>";

    private static String H1 = "<h1>$2</h1>";

    private static String H2 = "<h2>$2</h2>";

    private static String H3 = "<h3>$2</h3>";

    private static String H4 = "<h4>$2</h4>";

    private static String H5 = "<h5>$2</h5>";

    private static String H6 = "<h6>$2</h6>";

    /**
     * 转换UBB为HTML代码
     *
     * @param text
     * @return
     */
    public static String decode(String text) {
        text = replace(text, "align=(.+?)","align",ALIGN);	       
        text = replace(text, "url=(.+?)","url", URL);	       
        text = replace(text, "img", IMG);
        text = replace(text, "img=(.+?),(.+?)", "img", IMG1);
        text = replace(text, "u", U);
        text = replace(text, "i", I);
        text = replace(text, "li", LI);
        text = replace(text, "b", B);
        text = replace(text, "h1", H1);
        text = replace(text, "h2", H2);
        text = replace(text, "h3", H3);
        text = replace(text, "h4", H4);
        text = replace(text, "h5", H5);
        text = replace(text, "h6", H6);
        return text;
    }

    /**
     * 将 从数据库 取出来的文章，ubb语法转换成正常的html
     *
     * @param text
     * @param length
     * @return
     */
    public static String replace(String text, String reg, String replaceStr) {
        Matcher m = null;
        m = Pattern.compile(
                "(\\[" + reg + "\\])(.[^\\[]*)(\\[/" + reg + "\\])",
                Pattern.DOTALL | Pattern.CASE_INSENSITIVE | Pattern.MULTILINE)//使用的模式：DOTALL、忽略大小写、多行
            .matcher(text);
        text = m.replaceAll(replaceStr);
        return text;
    }

    /**
     * 将 从数据库 取出来的文章，ubb语法转换成正常的html
     *
     * @param text
     * @param length
     * @return
     */
    public static String replace(String text, String reg, String regEnd, String replaceStr) {
        Matcher m = null;
        m = Pattern.compile(
                "(\\[" + reg + "\\])(.[^\\[]*)(\\[/" + regEnd + "\\])",
                Pattern.DOTALL | Pattern.CASE_INSENSITIVE | Pattern.MULTILINE)//使用的模式：DOTALL、忽略大小写、多行
            .matcher(text);
        text = m.replaceAll(replaceStr);
        return text;
    }

    public static void main(String arg[]) {
//        String f = "[img=2,200]sds[/img]";
        String f="[align=center][img]images/pic.gif[/img]666[/align]";
        System.out.print(UBB.decode(f));

    }
}