InputStream的工具类
package util;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;/** * * @author Andy.Chen * @mail Chenjunjun.ZJ@gmail.com * */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 {InputStream 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);}}