流方式读写文件 去处Proprey文件重复项

package com.cbuy;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.FileWriter;import java.io.IOException;import java.io.InputStreamReader;import java.io.OutputStreamWriter;import java.io.UnsupportedEncodingException;import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;import java.util.Enumeration;import java.util.HashMap;import java.util.Iterator;import java.util.Map;import java.util.Properties;import java.util.TreeMap;import java.util.Map.Entry;public class RemoveDuplication {/** * @param args * @throws IOException  */public static void main(String[] args) throws IOException {Map  mapkey = new TreeMap ();Properties fp1 = new Properties();// boot rootfp1.load(RemoveDuplicate.class.getClassLoader().getResourceAsStream("test.properties"));Enumeration e3 = fp1.keys();int jj=0;while(e3.hasMoreElements()){jj++;mapkey.put(jj,e3.nextElement());//System.out.println(e3.nextElement());}Map<String, Integer> keyfreqs = new HashMap<String, Integer>();Iterator<String> it = mapkey.keySet().iterator(); while(it.hasNext()){ System.out.println("==="+mapkey.get(it.next())); } if(mapkey.containsValue("res_bu_landing_paras")){System.out.println("****");}         BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("D:/soursefile.txt"),"GB2312"));        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("D:/targetfile.txt"),"GB2312"));        String data = null;        int i = 0;        while((data = br.readLine())!=null)        {            //System.out.println(data);            String ongLine=data;                    if(ongLine.indexOf("=")>0&& !ongLine.substring(0, 1).endsWith("#")){        i++;String font="";String back="";font=ongLine.substring(0, ongLine.indexOf("="));back=ongLine.substring(ongLine.indexOf("=")+1, ongLine.length());font=font.trim();back=back.trim();if(mapkey.containsValue(font)){}else{ bw.write(data);}//System.out.println(font);        }          //   System.out.println(new String(data.getBytes("GBK")));                      bw.newLine();        }        br.close();        bw.close();}}

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