Java工具类——字符串压缩StringCompress

1.compress(String):对字符串进行ZIP压缩饼返回字节数组

2.decompress(byte[]):将压缩的字节数组还原成字符串

用途：可用于将字符串保存到数据库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;  
    }  
}  

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