Base64和byte[]数组互转的两种方式

//方式一：jdk的工具类javax.xml.bind.DatatypeConverter
String str = "base64字符串";
//byte[]转base64
String encode = DatatypeConverter.printBase64Binary(str.getBytes());
System.out.println("转base64后："+encode);
//Base64转byte[]
byte[] decode= DatatypeConverter.parseBase64Binary(encode);
System.out.println("base64转回："+new String(decode));

//方式二：jdk的工具类sun.misc.BASE64Decoder和sun.misc.BASE64Encoder
//byte[]转base64
BASE64Encoder base64Encoder = new BASE64Encoder();
String encode1 = base64Encoder.encode(str.getBytes());
System.out.println("转base64后："+encode1);
//Base64转byte[]
BASE64Decoder base64Decoder = new BASE64Decoder();
byte[] decodeBuffer = base64Decoder.decodeBuffer(encode1);
System.out.println("base64转回："+new String(decodeBuffer));