BASE64转码成字符串和字符串转化为bytebuffer

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import sun.misc.BASE64Decoder;
import java.nio.ByteBuffer;
public class Base64Utils {
public static String getFromBASE64(String s) {
if (s == null)
return null;
BASE64Decoder decoder = new BASE64Decoder();
try {
byte[] b = decoder.decodeBuffer(s);
return new String(b, "UTF-8");
} catch (Exception e) {
return null;
}
}
public static ByteBuffer getFromBASE64byte(String s) {
if (s == null)
return null;
BASE64Decoder decoder = new BASE64Decoder();
try {

return decoder.decodeBufferToByteBuffer(s);//decoder.decodeBuffer(s);
} catch (Exception e) {
return null;
}
}
}