功能：
-
copy 从source中copy数据到target
源码：
package com.dotions.utils;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* @Description IO toolkit
*
* @author Dotions 2016年7月26日 下午3:22:52
*/
public class IOUtil {
public static long copy(byte[] source, OutputStream target) throws IOException {
target.write(source);
target.flush();
return source.length;
}
public static long copy(InputStream source, OutputStream target) throws IOException {
byte[] buff = new byte[Buffer.LENGTH];
int len = 0;
long length = 0;
while(true) {
len = source.read(buff);
if(len <= 0) {
break;
}
length += len;
target.write(buff, 0, len);
if(Buffer.FLUSH) {
target.flush();
}
}
if(!Buffer.FLUSH) {
target.flush();
}
return length;
}
private static interface Buffer {
// 8KB
public int LENGTH = 8 * 1024;
public boolean FLUSH = true;
}
}
