标签:count JAVA int bytes new 切分 fileInputStream FileInputStream size
package stream; import java.io.*; /** * @author*/ public class TestStream { public static void main(String[] args) throws IOException { // *********************** read File file = new File("D:/stream/note.txt"); FileInputStream fileInputStream = null; try { fileInputStream = new FileInputStream(file); long length = file.length(); int size = 3*1024; byte[] bytes = new byte[size]; int count = 0; if (length<=size) { // 一次存储 myWrite(fileInputStream,bytes,0,size,0); } else { // 分段存储 for (long i = length; i > 0; i--) { if (i % size==0) { count++; myWrite(fileInputStream,bytes,0,size,count); } if (i == 1 && length % size!=0){ // 处理剩余的 。 size = (int) (length - size*count); bytes = new byte[size]; count++; myWrite(fileInputStream,bytes,0,size,count); } } } } catch (FileNotFoundException e) { e.printStackTrace(); } finally { fileInputStream.close(); } } public static void myWrite(FileInputStream fileInputStream,byte[] bytes,int index,int size,int count) throws IOException { fileInputStream.read(bytes, index, size); File wroteFile = new File("D:/stream/wrote-"+count+".txt"); wroteFile.delete(); FileOutputStream fileOutputStream = new FileOutputStream(wroteFile); fileOutputStream.write(bytes); } }
标签:count,JAVA,int,bytes,new,切分,fileInputStream,FileInputStream,size 来源: https://www.cnblogs.com/500m/p/16557618.html
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