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package com.hx.util; |
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import java.io.ByteArrayInputStream; |
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import java.io.ByteArrayOutputStream; |
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import java.io.File; |
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import java.io.FileInputStream; |
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import java.io.FileNotFoundException; |
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import java.io.FileOutputStream; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.UnsupportedEncodingException; |
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public class StreamUtils { |
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final static int BUFFER_SIZE = 4096; |
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/** |
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* ��InputStreamת����String |
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* |
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* @param in |
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* InputStream |
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* @return String |
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* @throws Exception |
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* |
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*/ |
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public static String InputStreamTOString(InputStream in) { |
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ByteArrayOutputStream outStream = new ByteArrayOutputStream(); |
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byte[] data = new byte[BUFFER_SIZE]; |
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String string = null; |
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int count = 0; |
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try { |
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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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} catch (IOException e) { |
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e.printStackTrace(); |
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} |
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data = null; |
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try { |
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string = new String(outStream.toByteArray(), "UTF-8"); |
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} catch (UnsupportedEncodingException e) { |
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e.printStackTrace(); |
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} |
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return string; |
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} |
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/** |
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* ��InputStreamת����ij���ַ�����String |
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* |
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* @param in |
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* @param encoding |
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* @return |
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* @throws Exception |
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*/ |
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public static String InputStreamTOString(InputStream in, String encoding) { |
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String string = null; |
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ByteArrayOutputStream outStream = new ByteArrayOutputStream(); |
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byte[] data = new byte[BUFFER_SIZE]; |
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int count = -1; |
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try { |
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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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} catch (IOException e) { |
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e.printStackTrace(); |
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} |
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data = null; |
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try { |
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string = new String(outStream.toByteArray(), encoding); |
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} catch (UnsupportedEncodingException e) { |
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e.printStackTrace(); |
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} |
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return string; |
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} |
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/** |
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* ��Stringת����InputStream |
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* |
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* @param in |
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* @return |
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* @throws Exception |
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*/ |
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public static InputStream StringTOInputStream(String in) throws Exception { |
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ByteArrayInputStream is = new ByteArrayInputStream(in.getBytes("UTF-8")); |
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return is; |
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} |
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/** |
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* ��Stringת����InputStream |
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* |
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* @param in |
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* @return |
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* @throws Exception |
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*/ |
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public static byte[] StringTObyte(String in) { |
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byte[] bytes = null; |
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try { |
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bytes = InputStreamTOByte(StringTOInputStream(in)); |
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} catch (IOException e) { |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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return bytes; |
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} |
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/** |
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* ��InputStreamת����byte���� |
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* |
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* @param in |
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* InputStream |
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* @return byte[] |
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* @throws IOException |
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*/ |
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public static byte[] InputStreamTOByte(InputStream in) throws IOException { |
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ByteArrayOutputStream outStream = new ByteArrayOutputStream(); |
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byte[] data = new byte[BUFFER_SIZE]; |
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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; |
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return outStream.toByteArray(); |
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} |
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/** |
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* ��byte����ת����InputStream |
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* |
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* @param in |
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* @return |
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* @throws Exception |
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*/ |
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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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} |
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/** |
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* ��byte����ת����String |
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* |
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* @param in |
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* @return |
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* @throws Exception |
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*/ |
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public static String byteTOString(byte[] in) { |
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InputStream is = null; |
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try { |
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is = byteTOInputStream(in); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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return InputStreamTOString(is, "UTF-8"); |
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} |
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/** |
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* ��byte����ת����String |
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* |
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* @param in |
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* @return |
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* @throws Exception |
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*/ |
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public static String getString(String in) { |
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String is = null; |
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try { |
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is = byteTOString(StringTObyte(in)); |
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} catch (Exception e) { |
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e.printStackTrace(); |
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} |
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return is; |
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} |
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// InputStream ת����byte[] |
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public byte[] getBytes(InputStream is) throws IOException { |
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ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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byte[] b = new byte[BUFFER_SIZE]; |
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int len = 0; |
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while ((len = is.read(b, 0, BUFFER_SIZE)) != -1) { |
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baos.write(b, 0, len); |
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} |
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baos.flush(); |
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byte[] bytes = baos.toByteArray(); |
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System.out.println(new String(bytes)); |
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return bytes; |
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} |
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/** |
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* ����ļ�·�������ļ����������� |
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* ���ֽ�Ϊ��λ���� unicode �� |
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* @return |
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*/ |
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public static FileInputStream getFileInputStream(String filepath) { |
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FileInputStream fileInputStream = null; |
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try { |
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fileInputStream = new FileInputStream(filepath); |
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} catch (FileNotFoundException e) { |
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System.out.print("������Ϣ:�ļ�������"); |
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e.printStackTrace(); |
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} |
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return fileInputStream; |
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} |
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/** |
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* ����ļ������ļ����������� |
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* ���ֽ�Ϊ��λ���� unicode �� |
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* @return |
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*/ |
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public static FileInputStream getFileInputStream(File file) { |
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FileInputStream fileInputStream = null; |
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try { |
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fileInputStream = new FileInputStream(file); |
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} catch (FileNotFoundException e) { |
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System.out.print("������Ϣ:�ļ�������"); |
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e.printStackTrace(); |
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} |
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return fileInputStream; |
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} |
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/** |
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* ����ļ������ļ���������� |
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* ���ֽ�Ϊ��λ���� unicode �� |
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* @param file |
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* @param append true:�ļ����ӷ�ʽ��,false:��ԭ�ļ������� |
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* @return |
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*/ |
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public static FileOutputStream getFileOutputStream(File file,boolean append) { |
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FileOutputStream fileOutputStream = null; |
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try { |
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fileOutputStream = new FileOutputStream(file,append); |
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} catch (FileNotFoundException e) { |
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System.out.print("������Ϣ:�ļ�������"); |
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e.printStackTrace(); |
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} |
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return fileOutputStream; |
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} |
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/** |
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* ����ļ�·�������ļ���������� |
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* ���ֽ�Ϊ��λ���� unicode �� |
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* @param append true:�ļ����ӷ�ʽ��,false:��ԭ�ļ������� |
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* @return |
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*/ |
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public static FileOutputStream getFileOutputStream(String filepath,boolean append) { |
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FileOutputStream fileOutputStream = null; |
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try { |
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fileOutputStream = new FileOutputStream(filepath,append); |
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} catch (FileNotFoundException e) { |
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System.out.print("������Ϣ:�ļ�������"); |
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e.printStackTrace(); |
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} |
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return fileOutputStream; |
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} |
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public static File getFile(String filepath) { |
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return new File(filepath); |
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} |
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public static ByteArrayOutputStream getByteArrayOutputStream() { |
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return new ByteArrayOutputStream(); |
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} |
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} |