InputStream String与byte数组之间的互转

public class InputStreamUtils {

final static int BUFFER_SIZE = 4096;

/**

* 将InputStream转换成String

* @param in InputStream

* @return String

* @throws Exception

*

*/

public static String InputStreamTOString(InputStream in) throws Exception{

ByteArrayOutputStream outStream = new ByteArrayOutputStream();

byte[] data = new byte[BUFFER_SIZE];

int count = -1;

while((count = in.read(data,0,BUFFER_SIZE)) != -1)

outStream.write(data, 0, count);

data = null;

return new String(outStream.toByteArray(),"ISO-8859-1");

}

/**

* 将InputStream转换成某种字符编码的String

* @param in

* @param encoding

* @return

* @throws Exception

*/

public static String InputStreamTOString(InputStream in,String encoding) throws Exception{

ByteArrayOutputStream outStream = new ByteArrayOutputStream();

byte[] data = new byte[BUFFER_SIZE];

int count = -1;

while((count = in.read(data,0,BUFFER_SIZE)) != -1)

outStream.write(data, 0, count);

data = null;

return new String(outStream.toByteArray(),"ISO-8859-1");

}

/**

* 将String转换成InputStream

* @param in

* @return

* @throws Exception

*/

public static InputStream StringTOInputStream(String in) throws Exception{

ByteArrayInputStream is = new ByteArrayInputStream(in.getBytes("ISO-8859-1"));

return is;

}

/**

* 将InputStream转换成byte数组

* @param in InputStream

* @return byte[]

* @throws IOException

*/

public static byte[] InputStreamTOByte(InputStream in) throws IOException{

ByteArrayOutputStream outStream = new ByteArrayOutputStream();

byte[] data = new byte[BUFFER_SIZE];

int count = -1;

while((count = in.read(data,0,BUFFER_SIZE)) != -1)

outStream.write(data, 0, count);

data = null;

return outStream.toByteArray();

}

/**

* 将byte数组转换成InputStream

* @param in

* @return

* @throws Exception

*/

public static InputStream byteTOInputStream(byte[] in) throws Exception{

ByteArrayInputStream is = new ByteArrayInputStream(in);

return is;

}

/**

* 将byte数组转换成String

* @param in

* @return

* @throws Exception

*/

public static String byteTOString(byte[] in) throws Exception{

InputStream is = byteTOInputStream(in);

return InputStreamTOString(is);

}

}