JAVA BASE 64 암호 화 복호화 실현 코드

package com.zhaochao.utill;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Method;

public class Base64Utill {
	public static String encode(String code) throws UnsupportedEncodingException, Exception {
		return encodeBase64(code.getBytes());
	}

	public static String decode(String code) throws UnsupportedEncodingException, Exception {
		return new String(decodeBase64(code));
	}

	public static String encodeBase64(byte[] input) throws Exception {
		Class clazz = Class.forName("com.sun.org.apache.xerces.internal.impl.dv.util.Base64");
		Method mainMethod = clazz.getMethod("encode", byte[].class);
		mainMethod.setAccessible(true);
		Object retObj = mainMethod.invoke(null, new Object[] { input });
		return (String) retObj;
	}

	public static byte[] decodeBase64(String input) throws Exception {
		Class clazz = Class.forName("com.sun.org.apache.xerces.internal.impl.dv.util.Base64");
		Method mainMethod = clazz.getMethod("decode", String.class);
		mainMethod.setAccessible(true);
		Object retObj = mainMethod.invoke(null, input);
		return (byte[]) retObj;
	}

	public static void main(String[] rags) throws UnsupportedEncodingException, Exception {
		String str = "abadjfajerjaqwrasdf";
		String code = Base64Utill.encode(str);
		System.err.println("   ：" + str);
		System.err.println("   ：" + code);
		System.err.println("   ：" + Base64Utill.decode(code));

	}

}

   ：abadjfajerjaqwrasdf
   ：YWJhZGpmYWplcmphcXdyYXNkZg==
   ：abadjfajerjaqwrasdf