过滤敏感字

首先需要在src目录下配置需要过滤字符的属性文件：words.properties

package com.zou.regex;
/*
 * 过滤敏感字
 */
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Enumeration;
import java.util.Properties;
import java.util.regex.Pattern;
import java.util.regex.Matcher;
public class Test2 
{
 private static Pattern pattern = null;
 // 从words.properties初始化正则表达式字符串
 private static void initPattern()
 {
  StringBuffer patternBuf = new StringBuffer("");
  try
  {
   InputStream in = Test2.class.getClassLoader().getResourceAsStream("words.properties");
   Properties pro = new Properties();
   pro.load(in);
   Enumeration enu = pro.propertyNames(); 
   patternBuf.append("(");
   while(enu.hasMoreElements())
   {
    patternBuf.append((String)enu.nextElement()+"|");
   }
   patternBuf.deleteCharAt(patternBuf.length()-1);
   patternBuf.append(")");
  System.out.println(patternBuf.toString());
//unix换成UTF-8
   //pattern = Pattern.compile(new String(patternBuf.toString().getBytes("ISO-8859-1"), "UTF-8"));
//win下换成gb2312
   pattern = Pattern.compile(patternBuf.toString());
  }
  catch(IOException ioEx)
  {
   ioEx.printStackTrace();
  }
 }
 private static String doFilter(String str)
 {
  Matcher m = pattern.matcher(str);
  str = m.replaceAll("**");
  return str;
 }
 
 public static void main(String[] args)
 {
  String str = "敏感字敏感字敏感字fd走少fd敏感字敏感字gdf走gfg少";
  System.out.println("str:"+str);
  initPattern();
  Date d1 = new Date();
  SimpleDateFormat formatter = new SimpleDateFormat("EEE, d MMM yyyy HH:mm:ss:SSS Z");
  System.out.println("start:"+formatter.format(d1));
  System.out.println("共"+str.length()+"个字符，查到" + Test2.doFilter(str));
  Date d2 = new Date();
  System.out.println("end:"+formatter.format(d2));
 }
}