java緩衝位元組流複製檔案,逐個位元組讀取、寫入
阿新 • • 發佈:2019-01-30
package cwj.bbb; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; 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; class StreamTest { public static void main(String[] args) throws IOException { /*把路徑下的檔案/home/cwjy1202/hadoop/javaTest/input01.txt * 以位元組緩衝輸出流的方式複製到/home/cwjy1202/hadoop/javaTest/input013.txt * */ File file = new File("/home/cwjy1202/hadoop/javaTest/input01.txt"); InputStream bis = new BufferedInputStream(new FileInputStream(file)); OutputStream bos = new BufferedOutputStream(new FileOutputStream("/home/cwjy1202/hadoop/javaTest/input013.txt")); //逐個位元組讀取 int len = bis.read(); while(-1 != len) { //逐個位元組寫入 bos.write(len); len = bis.read(); } //強制把緩衝區的資料輸出 bos.flush(); bos.close(); bis.close(); } }