Java 敏感字符处理类，功能非常强大

敏感字符的处理，性能非常好，采用文件的方式，可通过代码增加敏感词等强大的功能

在开源中国的基础上增加部分方法

依赖apache的io 和lang包

package com.wiker;import java.io.File;import java.io.IOException;import java.util.ArrayList;import java.util.List;import org.apache.commons.io.FileUtils;import org.apache.commons.io.LineIterator;import org.apache.commons.lang.StringUtils;/** * 敏感字词处理类 * @author Wiker * @date 2010-1-11 下午10:51:30 */public class BadWord {private final static File wordfilter = new File("C:/wordfilter.txt");private static long lastModified = 0L;private static List<String> words = new ArrayList<String>();private static void checkReload(){if(wordfilter.lastModified() > lastModified){synchronized(BadWord.class){try{lastModified = wordfilter.lastModified();LineIterator lines = FileUtils.lineIterator(wordfilter, "utf-8");while(lines.hasNext()){String line = lines.nextLine();if(StringUtils.isNotBlank(line))words.add(StringUtils.trim(line).toLowerCase());}}catch(IOException e){e.printStackTrace();}}}}/** * 检查敏感字内容 * @param contents */public static String check(String ...contents) {if(!wordfilter.exists())return null;checkReload();for(String word : words){for(String content : contents)if(content!=null && content.indexOf(word) >= 0)return word;}return null;}/** * 检查字符串是否包含敏感词 * * @param content * @return */public static boolean isContain(String content) {    if(!wordfilter.exists())        return false;    checkReload();    for(String word : words){            if(content!=null && content.indexOf(word) >= 0)                return true;    }    return false;}/** * 替换掉字符串中的敏感词 * * @param str 等待替换的字符串 * @param replaceChar 替换字符 * @return */public static String replace(String str,String replaceChar){    checkReload();        for(String word : words){            if(str.indexOf(word)>=0){                String reChar = "";                for(int i=0;i<word.length();i++){                    reChar += replaceChar;                }                str = str.replaceAll(word, reChar);            }        }        return str;}public static List<String> lists() {checkReload();return words;}/** * 添加敏感词 * * @param word * @throws IOException */public static void add(String word) throws IOException {word = word.toLowerCase();if(!words.contains(word)){words.add(word);FileUtils.writeLines(wordfilter, "UTF-8", words);lastModified = wordfilter.lastModified();}}/** * 删除敏感词 * * @param word * @throws IOException */public static void delete(String word) throws IOException {word = word.toLowerCase();words.remove(word);FileUtils.writeLines(wordfilter, "UTF-8", words);lastModified = wordfilter.lastModified();}public static void main(String[] args) throws Exception{        System.out.println(BadWord.replace("中国共产党钓鱼岛","*"));        System.out.println(BadWord.isContain("岛"));        BadWord.add("傻逼");    }}