public static String base64Encode(String rawStr,String encoding) throws IOException{
		byte [] rawByte = rawStr.getBytes(encoding);
		return new String(SecureUtil.base64Encode(rawByte),encoding);
	}
public static String base64Encode ( String rawStr , String encoding ) throws IOException { byte [ ] rawByte = rawStr . getBytes ( encoding ) ; return new String ( SecureUtil . base64Encode ( rawByte ) , encoding ) ; }
对字符串做base64<br>
@param rawStr<br>
@param encoding<br>
@return<br>
@throws IOException