【自动化__持续集成】___java___文本文件__字节流

一、代码如下

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package www.wujianbotwo;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
 
public class Demo09 {
 
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Demo09 demo09= new Demo09();
        demo09.byteRead();
 
    }
     
    private void byteRead() {
        try {
            File file= new File("D:\\Test.txt");
            InputStream in= new FileInputStream(file);
            byte[] buf= new byte[(int)file.length()];
            in.read(buf);
            in.close();
            for(byte b: buf) {
                System.out.println(b);
            }
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
         
 
    }
 
}

 

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package www.wujianbotwo;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
 
public class Demo09 {
 
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Demo09 demo09= new Demo09();
        //demo09.byteRead();
        demo09.byteWrite();
        demo09.byteWriteFalse();
 
    }
     
    private void byteRead() {
        try {
            File file= new File("D:\\Test.txt");
            InputStream in= new FileInputStream(file);
            byte[] buf= new byte[(int)file.length()];
            in.read(buf);
            in.close();
            for(byte b: buf) {
                System.out.println(b);
            }
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
         
 
    }
     
    private void byteWrite() {
        try {
            File file= new File("D:\\Test.txt");
            OutputStream out= new FileOutputStream(file, true);
            String content= "这是文件内容。\r\n";
            byte[] buf= content.getBytes();
            out.write(buf, 0, buf.length);
            out.close();
            System.out.println("输入成功!!");
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
 
    }
     
     
    private void byteWriteFalse() {
        try {
            File file= new File("D:\\Test.txt");
            OutputStream out= new FileOutputStream(file, false);
            String content= "这是文件内容。\r\n";
            byte[] buf= content.getBytes();
            out.write(buf, 0, buf.length);
            out.close();
            System.out.println("输入成功!!");
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
 
    }
 
 
}

 



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