（IO）SequenceInputStream 合并流

 

多个流合并到一个流中，进行处理

 

package com.gc.file;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.SequenceInputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.List;

public class SequenceInputStreamDemo {
	public static void main(String[] args) throws Exception {
		
		//定义容器，装流
		List<FileInputStream> c = new ArrayList<FileInputStream>();
		
		c.add(new FileInputStream("temp\\buffered.txt"));
		c.add(new FileInputStream("temp\\pw.txt"));
		c.add(new FileInputStream("temp\\text.txt"));
		
		//使用集合工具类，将集合转换为枚举
		Enumeration<FileInputStream> enumeration = Collections.enumeration(c);
		
		//将枚举集合中的流进行合并
		SequenceInputStream sis = new SequenceInputStream(enumeration);
		
		//字节流转换为字符流,并指定编码
		BufferedReader bufr = new BufferedReader(new InputStreamReader(sis,"UTF-8"));
		
		//使用打印流
		PrintWriter pw = new PrintWriter(new FileWriter("temp\\seqSteam.txt"), true);
		
		String line = null;
		
		while((line=bufr.readLine())!=null) {
			pw.println(line);
		}
		
		//释放连接
		bufr.close();
		pw.close();
	}
}