[技巧篇]19.InputStream与String,Byte之间互转[转载]

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
 
/**
 * @see 
InputStream转化为String
String 转换为InputStream
InputStream 转化为byte数组
byte转化为InputStream
byte转化为String * @author 胖先生 * @mail hanpang8983@foxmail.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{ 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); } }

  

posted on 2015-10-16 15:40  胖先生  阅读(240)  评论(0编辑  收藏  举报