java base64编码和解码案例

import java.io.IOException;

public class Test {
	
	/**
	 * 编码
	 * @param bstr
	 * @return String
	 */
	public static String encode(byte[] bstr){
	return new sun.misc.BASE64Encoder().encode(bstr);
	}

	/**
	 * 解码
	 * @param str
	 * @return string
	 */
	public static byte[] decode(String str){
	byte[] bt = null;
	try {
		sun.misc.BASE64Decoder decoder = new sun.misc.BASE64Decoder();
		bt = decoder.decodeBuffer( str );
	} catch (IOException e) {
		e.printStackTrace();
	}

		return bt;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		test te = new test();
		String aa = "更多更多";
		aa = te.encode(aa.getBytes());
		System.out.println("----aa:"+aa);
		String str = aa;
		String str2 = new String(te.decode(str));
		System.out.println("-----str2:"+str2);
	}
}