从输入流中获取数据并以字节数组返回

import java.io.ByteArrayOutputStream;
import java.io.InputStream;

public class StreamTool {
	public static byte[] read(InputStream inStream)throws Exception{
		ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
		byte[] buffer = new byte[1024];
		int len = 0;
		while((len=inStream.read(buffer))!=-1){
			outputStream.write(buffer, 0, len);
		}
		inStream.close();
		return outputStream.toByteArray();
	}
}