JAVA×Ö·û´®Àà

import java.util.*;
import java.util.regex.Pattern;
public class StrTools {
/**
* ·Ö¸î×Ö·û´®
*
* @param str String ԭʼ×Ö·û´®
* @param splitsign String ·Ö¸ô·û
* @return String[] ·Ö¸îºóµÄ×Ö·û´®Êý×é
*/
@SuppressWarnings("unchecked")
public static String[] split(String str, String splitsign) {
int index;
if (str == null || splitsign == null)
return null;
ArrayList al = new ArrayList();
while ((index = str.indexOf(splitsign)) != -1) {
al.add(str.substring(0, index));
str = str.substring(index + splitsign.length());
}
al.add(str);
return (String[]) al.toArray(new String[0]);
}
/**
* Ìæ»»×Ö·û´®
*
* @param from String ԭʼ×Ö·û´®
* @param to String Ä¿±ê×Ö·û´®
* @param source String ĸ×Ö·û´®
* @return String Ìæ»»ºóµÄ×Ö·û´®
*/
public static String replace(String from, String to, String source) {
if (source == null || from == null || to == null)
return null;
StringBuffer bf = new StringBuffer("");
int index = -1;
while ((index = source.indexOf(from)) != -1) {
bf.append(source.substring(0, index) + to);
source = source.substring(index + from.length());
index = source.indexOf(from);
}
bf.append(source);
return bf.toString();
}
/**
* Ìæ»»×Ö·û´®£¬ÄÜÄܹ»ÔÚHTMLÒ³ÃæÉÏÖ±½ÓÏÔʾ(Ì滻˫ÒýºÅºÍСÓÚºÅ)
*
* @param str String ԭʼ×Ö·û´®
* @return String Ìæ»»ºóµÄ×Ö·û´®
*/
public static String htmlencode(String str) {
if (str == null) {
return null;
}
return replace("\"", """, replace("<", "<", str));
}
/**
* Ìæ»»×Ö·û´®£¬½«±»±àÂëµÄת»»³ÉԭʼÂ루Ìæ»»³ÉË«ÒýºÅºÍСÓںţ©
*
* @param str String
* @return String
*/
public static String htmldecode(String str) {
if (str == null) {
return null;
}
return replace(""", "\"", replace("<", "<", str));
}
private static final String _BR = "<br/>"