Java工具類——字串壓縮StringCompress

1.compress(String):對字串進行ZIP壓縮餅返回位元組數組

2.decompress(byte[]):將壓縮的位元組數組還原成字串

用途：可用於將字串儲存到資料庫BOLB中。

import java.io.ByteArrayInputStream;  import java.io.ByteArrayOutputStream;  import java.io.IOException;  import java.util.zip.ZipEntry;  import java.util.zip.ZipInputStream;  import java.util.zip.ZipOutputStream;    public class StringCompress {      public static final byte[] compress(String paramString) {          if (paramString == null)              return null;          ByteArrayOutputStream byteArrayOutputStream = null;          ZipOutputStream zipOutputStream = null;          byte[] arrayOfByte;          try {              byteArrayOutputStream = new ByteArrayOutputStream();              zipOutputStream = new ZipOutputStream(byteArrayOutputStream);              zipOutputStream.putNextEntry(new ZipEntry("0"));              zipOutputStream.write(paramString.getBytes());              zipOutputStream.closeEntry();              arrayOfByte = byteArrayOutputStream.toByteArray();          } catch (IOException localIOException5) {              arrayOfByte = null;          } finally {              if (zipOutputStream != null)                  try {                      zipOutputStream.close();                  } catch (IOException localIOException6) {              }              if (byteArrayOutputStream != null)                  try {                      byteArrayOutputStream.close();                  } catch (IOException localIOException7) {              }          }          return arrayOfByte;      }        @SuppressWarnings("unused")      public static final String decompress(byte[] paramArrayOfByte) {          if (paramArrayOfByte == null)              return null;          ByteArrayOutputStream byteArrayOutputStream = null;          ByteArrayInputStream byteArrayInputStream = null;          ZipInputStream zipInputStream = null;          String str;          try {              byteArrayOutputStream = new ByteArrayOutputStream();              byteArrayInputStream = new ByteArrayInputStream(paramArrayOfByte);              zipInputStream = new ZipInputStream(byteArrayInputStream);              ZipEntry localZipEntry = zipInputStream.getNextEntry();              byte[] arrayOfByte = new byte[1024];              int i = -1;              while ((i = zipInputStream.read(arrayOfByte)) != -1)                  byteArrayOutputStream.write(arrayOfByte, 0, i);              str = byteArrayOutputStream.toString();          } catch (IOException localIOException7) {              str = null;          } finally {              if (zipInputStream != null)                  try {                      zipInputStream.close();                  } catch (IOException localIOException8) {                  }              if (byteArrayInputStream != null)                  try {                      byteArrayInputStream.close();                  } catch (IOException localIOException9) {                  }              if (byteArrayOutputStream != null)                  try {                      byteArrayOutputStream.close();                  } catch (IOException localIOException10) {              }          }          return str;      }  }  

轉自【http://www.open-open.com/lib/view/open1374372029683.html】