package apache.poi.assistant;

import java.io.UnsupportedEncodingException;
import java.util.Base64;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class SafetyAssistant {
	
	private static final Logger logger = LogManager.getLogger(SafetyAssistant.class);
	
	/**
	 * BASE64 编码
	 */
	public static String base64Encoder(String oldString) {
		Base64.Encoder encoder = Base64.getEncoder();
		String encodedText = null;
		
		try {
			encodedText = encoder.encodeToString(oldString.getBytes("UTF-8"));
		} catch (UnsupportedEncodingException e) {
			logger.error(" jsonString : " + oldString);
			logger.error(" UnsupportedEncodingException error", e);
		}

		return encodedText;
	}
	
	/**
	 * BASE64 解码
	 */
	public static String base64Decoder(String oldString) {
		Base64.Decoder decoder = Base64.getDecoder();
		String decoderdText = null;
		
		try {
			decoderdText = new String(decoder.decode(oldString), "UTF-8");
		} catch (UnsupportedEncodingException e) {
			logger.error(" oldString : "+oldString);
			logger.error(" UnsupportedEncodingException error", e);
		}
		
		return decoderdText;
	}
}