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【Java】敏感字词库管理类

作者:蔚蓝 / 发布于2014/10/14/ 451


	package my.mvc;
	
	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
	* @author Winter Lau
	* @date 2010-1-11 下午10:51:30
	*/
	public class BadWord {
	
	 private final static File wordfilter = new File(RequestContext.root() + "WEB-INF" + File.separator + "conf" + File.separator + "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;
	 }
	
	 public static List<String> List() {
	 _CheckReload();
	 return words;
	 }
	
	 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();
	 }
	 }
	
	 public static void Delete(String word) throws IOException {
	 word = word.toLowerCase();
	 words.remove(word);
	 FileUtils.writeLines(wordfilter, "UTF-8", words);
	 lastModified = wordfilter.lastModified();
	 }
	
	}

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　敏感字　

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