合并流 SequenceInputStream

Posted 2021-01-09 yuyu666

SequenceInputStream主要用来将2个流合并在一起，比如将两个txt中的内容合并为另外一个txt。下面给出一个实例：

import java.io.File;  
import java.io.FileInputStream;  
import java.io.FileOutputStream;  
import java.io.IOException;  
import java.io.InputStream;  
import java.io.OutputStream;  
import java.io.SequenceInputStream;  

/**  
 * 将两个文本文件合并为另外一个文本文件  
 */  

public class SequenceInputStreamDemo{

    public static void main(String[] args) throws IOException{

        File file1 = new File("d:" + File.separator + "hello1.txt");

        File file2 = new File("d:" + File.separator + "hello2.txt");

        File file3 = new File("d:" + File.separator + "hello.txt");

        InputStream input1 = new FileInputStream(file1);

        InputStream input2 = new FileInputStream(file2);

        OutputStream output = new FileOutputStream(file3);

        // 合并流

        SequenceInputStream sis = new SequenceInputStream(input1, input2);

        int temp = 0;

        while((temp = sis.read()) != -1){

            output.write(temp);

        }

        input1.close();

        input2.close();

        output.close();

        sis.close();

    }

}

【运行结果】：

结果会在hello.txt文件中包含hello1.txt和hello2.txt文件中的内容。