byte[]和InputStream的相互转换

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1：byte[]转换为InputStream
InputStream sbs = new ByteArrayInputStream(byte[] buf);

2：InputStream转换为InputStreambyte[]
ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
byte[] buff = new byte[100]; //buff用于存放循环读取的临时数据
int rc = 0;
while ((rc = inStream.read(buff, 0, 100)) > 0) {
swapStream.write(buff, 0, rc);
}
byte[] in_b = swapStream.toByteArray(); //in_b为转换之后的结果

import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;public class ByteToInputStream {public static final InputStream byte2Input(byte[] buf) {return new ByteArrayInputStream(buf);}public static final byte[] input2byte(InputStream inStream)throws IOException {ByteArrayOutputStream swapStream = new ByteArrayOutputStream();byte[] buff = new byte[100];int rc = 0;while ((rc = inStream.read(buff, 0, 100)) > 0) {swapStream.write(buff, 0, rc);}byte[] in2b = swapStream.toByteArray();return in2b;}}

出处：http://javapub.iteye.com/blog/665696