Java 数据流转换工具类

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

/**
 * 数据流转换工具类
 *
 */
public class StreamUtil {

	/**
	 * 从输入流中获取数据
	 * @param inStream 输入流
	 * @return
	 * @throws Exception
	 */
	public static byte[] readStreamToByte(InputStream inStream) throws Exception{
		ByteArrayOutputStream outStream = new ByteArrayOutputStream();
		byte[] buffer = new byte[1024];
		int len = 0;
		while( (len=inStream.read(buffer)) != -1 ){
			outStream.write(buffer, 0, len);
		}
		inStream.close();
		return outStream.toByteArray();
	}
	
	/**
	 * 从输入流中获取数据
	 * @param inStream 输入流
	 * @return
	 * @throws Exception
	 */
	public static String readStreamToString(InputStream inStream) throws Exception{
		ByteArrayOutputStream outStream = new ByteArrayOutputStream();
		byte[] buffer = new byte[1024];
		int len = 0;
		while( (len=inStream.read(buffer)) != -1 ){
			outStream.write(buffer, 0, len);
		}
		inStream.close();
		return outStream.toString();
	}
	
	/**
	 * 将输入流转化成某字符编码的String
	 * @param inStream 输入流
	 * @param encoding 编码
	 * @return
	 * @throws Exception
	 */
	public static String readStreamToString(InputStream inStream, String encoding) throws Exception{
		ByteArrayOutputStream outStream = new ByteArrayOutputStream();
		byte[] buffer = new byte[1024];
		int len = 0;
		while( (len=inStream.read(buffer)) != -1 ){
			outStream.write(buffer, 0, len);
		}
		inStream.close();
		return new String(outStream.toByteArray(), encoding);
	}
	
	
}