JAVA开发_Base64编码与解码

代码块

import java.io.UnsupportedEncodingException;

public class Base64{

/**
 * 
 * @param s
 * @return
 */
public static String getBASE64(String s)
{
    if (s == null)
    {
        return null;
    }
    try
    {
        return getBASE64(s.getBytes("UTF-8"));
    } catch (UnsupportedEncodingException e)
    {
        e.printStackTrace();
    }
    return null;
}

/**
 * 
 * @param s
 * @return
 */
public static String getBASE64(byte[] b)
{
    byte[] rb = org.apache.commons.codec.binary.Base64.encodeBase64(b);
    if (rb == null)
    {
        return null;
    }
    try
    {
        return new String(rb, "UTF-8");
    } catch (UnsupportedEncodingException e)
    {
        e.printStackTrace();
    }
    return null;
}

/**
 * 
 * @param s
 * @return
 */
public static String getFromBASE64(String s)
{
    if (s == null)
    {
        return null;
    }
    try
    {
        byte[] b = getBytesBASE64(s);
        if (b == null)
        {
            return null;
        }
        return new String(b, "UTF-8");
    } catch (UnsupportedEncodingException e)
    {
        e.printStackTrace();
    }
    return null;
}

/**
 * 
 * @param s
 * @return
 */
public static byte[] getBytesBASE64(String s)
{
    if (s == null)
    {
        return null;
    }
    try
    {
        byte[] b = org.apache.commons.codec.binary.Base64.decodeBase64(s
                .getBytes("UTF-8"));
        return b;
    } catch (Exception e)
    {
        return null;
    }
}

}

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