Java Base64编解码

http://commons.apache.org/proper/commons-codec/download_codec.cgi

import org.apache.commons.codec.binary.Base64;

public class Base64Codec {    
    
    public static String encodeBase64Chunked(String str) {
        byte[] bytes = Base64.encodeBase64Chunked(str.getBytes());
        return new String(bytes);
    }
    
    public static String encodeBase64(String str) {
        return Base64.encodeBase64String(str.getBytes());
    }
    
    public static String decodeBase64(String base64String) {
        byte[] bytes = Base64.decodeBase64(base64String);
        return new String(bytes);
    }
}