java中byte,String,InputStream之间的转换
import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;public class InputStreamUtils {final static int BUFFER_SIZE = 4096;// 将InputStream转换成Stringpublic 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Stringpublic 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InputStreampublic 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InputStreampublic static InputStream byteTOInputStream(byte[] in) throws Exception {ByteArrayInputStream is = new ByteArrayInputStream(in);return is;}// 将byte数组转换成Stringpublic static String byteTOString(byte[] in) throws Exception {InputStream is = byteTOInputStream(in);return InputStreamTOString(is);}}?