bufferedinputstream乱码怎么办

package com.java.utils.charactor;
 
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
 
/**
 * 简繁体转换
 *
 * @author pengjianbo <pengjianbosoft@gmail.com>
 * $Id$
 */
public class SimTradConvert {
 
    public SimTradConvert() throws Exception {
 
        File simplFile = new File(
                "D:\android\JavaUtils\src\com\java\utils\charactor\simplified.txt");
        FileInputStream simplFis = new FileInputStream(simplFile);
        BufferedInputStream simplBis = new BufferedInputStream(simplFis);
        BufferedReader simplBr = new BufferedReader(new InputStreamReader(simplBis));
        StringBuffer simplsb = new StringBuffer();
 
        byte[] simplb = new byte[1024];
        while ((simplBis.read(simplb)) != -1) {
            simplsb.append(new String(simplb));
        }
        
        simplFis.close();
        simplBis.close();
        
        
        File tradFile = new File(
                "D:\android\JavaUtils\src\com\java\utils\charactor\traditional.txt");
        FileInputStream tradFis = new FileInputStream(tradFile);
        BufferedInputStream tradBis = new BufferedInputStream(tradFis);
        StringBuffer tradsb = new StringBuffer();
 
        byte[] tradb = new byte[1024];
        while ((tradBis.read(tradb)) != -1) {
            tradsb.append(new String(tradb));
        }
        
        tradBis.close();
        tradFis.close();
        
        System.out.println(simplsb.toString());
        /*CnGetPinyin pinyin = new CnGetPinyin();
        //连接SQLite的JDBC
        Class.forName("org.sqlite.JDBC");
        Connection conn = DriverManager.getConnection("jdbc:sqlite:pai.db");
        Statement stat = conn.createStatement();
        for(int i = 0; i < simplsb.length() -1; i++ ) {
            
            stat.executeUpdate( "insert into CNLang(pinyin,simp,trad) values('" + pinyin.getPinyin(simplsb.substring(i, i + 1)) + "','"
                                + simplsb.substring(i, i + 1) + "','" + tradsb.substring(i, i + 1) + "')");
            System.out.println("正在添加:" + simplsb.substring(i, i + 1) + "-->"  + tradsb.substring(i, i + 1));
            if( i > simplsb.length() -1 ) {
                stat.close();
                conn.close();
            }
        }*/
        
    }
 
    public static void main(String[] args) throws Exception {
        new SimTradConvert();
    }
 
}

package com.pocketdigi;
 
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class Main {
 
    public static void main(String[] args) throws IOException {
        File f = new File("d:/a.txt");
        FileOutputStream fos = new FileOutputStream(f);
        // 构建FileOutputStream对象,文件不存在会自动新建
        BufferedOutputStream bos = new BufferedOutputStream(fos);
        bos.write("1我是中文".getBytes());
        bos.close();
        // 关闭输出流,写入数据,如果下面还要写用flush();
        // 因为是BufferOutputStream链接到FileOutputStream,只需关闭尾端的流
        // 所以不需要关闭FileOutputStream;
        FileInputStream fis = new FileInputStream(f);
        BufferedInputStream bis = new BufferedInputStream(fis);
        BufferedReader reader = new BufferedReader (new InputStreamReader(bis));
        //之所以用BufferedReader,而不是直接用BufferedInputStream读取,是因为BufferedInputStream是InputStream的间接子类,
        //InputStream的read方法读取的是一个byte,而一个中文占两个byte,所以可能会出现读到半个汉字的情况,就是乱码.
        //BufferedReader继承自Reader,该类的read方法读取的是char,所以无论如何不会出现读个半个汉字的.
        StringBuffer result = new StringBuffer();
        while (reader.ready()) {
            result.append((char)reader.read());
        }
        System.out.println(result.toString());
        reader.close();
 
 
    }
 
}