java中byte,String,InputStream之间的转换
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[*]import java.io.ByteArrayInputStream;
[*]
[*]import java.io.ByteArrayOutputStream;
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[*]import java.io.IOException;
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[*]import java.io.InputStream;
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[*]public class InputStreamUtils {
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[*] final static int BUFFER_SIZE = 4096;
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[*] // 将InputStream转换成String
[*] public static String InputStreamTOString(InputStream in) throws Exception {
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[*] ByteArrayOutputStream outStream = new ByteArrayOutputStream();
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[*] byte[] data = new byte;
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[*] int count = -1;
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[*] while ((count = in.read(data, 0, BUFFER_SIZE)) != -1)
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[*] outStream.write(data, 0, count);
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[*] data = null;
[*]
[*] return new String(outStream.toByteArray(), "ISO-8859-1");
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[*] }
[*]
[*] // 将InputStream转换成某种字符编码的String
[*] public static String InputStreamTOString(InputStream in, String encoding)
[*] throws Exception {
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[*] ByteArrayOutputStream outStream = new ByteArrayOutputStream();
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[*] byte[] data = new byte;
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[*] int count = -1;
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[*] while ((count = in.read(data, 0, BUFFER_SIZE)) != -1)
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[*] outStream.write(data, 0, count);
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[*] data = null;
[*]
[*] return new String(outStream.toByteArray(), "ISO-8859-1");
[*]
[*] }
[*]
[*] // 将String转换成InputStream
[*] public static InputStream StringTOInputStream(String in) throws Exception {
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[*] ByteArrayInputStream is = new ByteArrayInputStream(in.getBytes("ISO-8859-1"));
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[*] return is;
[*]
[*] }
[*]
[*] // 将InputStream转换成byte数组
[*] public static byte[] InputStreamTOByte(InputStream in) throws IOException {
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[*] ByteArrayOutputStream outStream = new ByteArrayOutputStream();
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[*] byte[] data = new byte;
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[*] int count = -1;
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[*] while ((count = in.read(data, 0, BUFFER_SIZE)) != -1)
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[*] outStream.write(data, 0, count);
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[*] data = null;
[*]
[*] return outStream.toByteArray();
[*]
[*] }
[*]
[*] // 将byte数组转换成InputStream
[*] public static InputStream byteTOInputStream(byte[] in) throws Exception {
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[*] ByteArrayInputStream is = new ByteArrayInputStream(in);
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[*] return is;
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[*] }
[*]
[*] // 将byte数组转换成String
[*] public static String byteTOString(byte[] in) throws Exception {
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[*] InputStream is = byteTOInputStream(in);
[*]
[*] return InputStreamTOString(is);
[*]
[*] }
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[*]}
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