java读写二进制文件

来源：互联网发布：淘宝买演唱会门票编辑：程序博客网时间：2024/06/05 07:14

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.*;

public class TaskOne {

private static DataInputStream dis=null;
private static DataOutputStream dos=null;
private static List<MrBean> list=new ArrayList<MrBean>();

    /**读取二进制文件**/
    public static void readBinaryStream(String fileName){
    //System.out.println("123");
    //int i=0;
    //File file = new File(fileName);
        try{
        dis=new DataInputStream(new FileInputStream(new File(fileName)));
        //System.out.println(dis.available());
            if(dis!=null){
                while(dis.available()>0){
                //System.out.println("456");
                    //System.out.println(dis.available());
                MrBean mrBean=new MrBean();
                    //System.out.print(dis.readInt()+" ");
                    mrBean.setTIME_STAMP(dis.readInt());
                    //System.out.print((int)dis.readChar()+" ");
                    mrBean.setTRX_ID((int)dis.readChar());
                    //System.out.print((int)dis.readChar()+" ");
                    mrBean.setLAC((int)dis.readChar());
                    //System.out.print((int)dis.readChar()+" ");
                    mrBean.setCI((int)dis.readChar());
                    //System.out.print((int)dis.readChar()+" ");
                    mrBean.setTEI((int)dis.readChar());
                    //System.out.print(dis.readByte()+" ");
                    mrBean.setVALUE_1(dis.readByte());
                    //System.out.print(dis.readByte()+" ");
                    mrBean.setVALUE_2(dis.readByte());
                    //System.out.print(dis.readByte()+" ");
                    mrBean.setVALUE_3(dis.readByte());
                    //System.out.print(dis.readByte()+" ");
                    mrBean.setVALUE_4(dis.readByte());
                    //System.out.print(dis.readInt()+" ");
                    mrBean.setCOUNTS(dis.readInt());
                    //System.out.println(dis.read(m_datapadding));
                    list.add(mrBean);
                    //System.out.println("");
                    /*i++;
                    if(i==100)
                    break;*/
                }
            }
        }catch(Exception e){
            e.printStackTrace();
        }
    }

    /**写入二进制文件**/
    public static void writeBinaryStream(String fileName,List<MrBean> list){
        try{
        dos=new DataOutputStream(new FileOutputStream(new File(fileName)));
            if(dos!=null){
                for(int i=0;i<list.size();i++){
                    dos.writeInt(list.get(i).getTIME_STAMP());
                    dos.writeChar(list.get(i).getTRX_ID());
                    dos.writeChar(list.get(i).getLAC());
                    dos.writeChar(list.get(i).getCI());
                    dos.writeChar(list.get(i).getTEI());
                    dos.writeByte(list.get(i).getVALUE_1());
                    dos.writeByte(list.get(i).getVALUE_2());
                    dos.writeByte(list.get(i).getVALUE_3());
                    dos.writeByte(list.get(i).getVALUE_4());
                    dos.writeInt(list.get(i).getCOUNTS());
                    //dos.write(m_datapadding);
                }
                dos.flush();
                dos.close();
            }
        }catch(Exception e){
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        String fileName = "E:/RLU_RLD.dat";
        String outFileName = "E:/RLU_RLD_SORTED.DAT.dat";
        TaskOne.readBinaryStream(fileName);
        QuickSort.quickSortByList(list, 0, list.size()-1);
        for(int i=0;i<list.size();i++)
        {
        System.out.println(list.get(i).getTIME_STAMP()+" "+list.get(i).getTRX_ID()+" "+list.get(i).getLAC()+" "+list.get(i).getCI()+" "+list.get(i).getTEI()+" "+list.get(i).getVALUE_1()+" "+list.get(i).getVALUE_2()+" "+list.get(i).getVALUE_3()+" "+list.get(i).getVALUE_4()+" "+list.get(i).getCOUNTS());
        }
        TaskOne.writeBinaryStream(outFileName, list);
    }
}