1 /* 2 * Copyright (C) 2012-2025 RRiBbit.org 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * https://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.rribbit.util; 17 18 import org.rribbit.dispatching.HttpRequestDispatcher; 19 import org.rribbit.processing.HttpRequestProcessorServlet; 20 21 import java.io.*; 22 import java.util.Base64; 23 24 /** 25 * This class provides utility methods for Base64 encoding. It is used by the {@link HttpRequestDispatcher} and {@link HttpRequestProcessorServlet}, but feel free to use it yourself. 26 * 27 * @author G.J. Schouten 28 * 29 */ 30 public final class Base64Util { 31 32 /** 33 * This class should not be instantiated. 34 */ 35 private Base64Util() {} 36 /** 37 * Encodes a Java {@link Object} to a Base64 encoded String. 38 * 39 * @param object The {@link Object} to be encoded 40 * @return The Base64 encoded {@link String} that represents the {@link Object} 41 */ 42 public static String encodeObject(Object object) throws IOException { 43 44 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 45 OutputStream b64os = Base64.getEncoder().wrap(baos); 46 ObjectOutputStream oos = new ObjectOutputStream(b64os); 47 oos.writeObject(object); 48 49 oos.flush(); 50 b64os.flush(); 51 baos.flush(); 52 53 //Try - finally not necessary, because once this Thread has ended, all these objects will be garbage collected anyway 54 oos.close(); 55 b64os.close(); 56 baos.close(); 57 58 return baos.toString(); 59 } 60 61 /** 62 * Decodes an {@link InputStream} that contains a Base64 encoded String to a Java {@link Object}. 63 * 64 * @param inputStream The {@link InputStream} that contains a Base64 encoded {@link String} 65 * @return The {@link Object} represented by the Base64 encoded {@link String} 66 */ 67 public static <T> T decodeInputStream(InputStream inputStream) throws IOException, ClassNotFoundException { 68 69 InputStream b64is = Base64.getDecoder().wrap(inputStream); 70 ObjectInputStream ois = new ObjectInputStream(b64is); 71 return (T) ois.readObject(); 72 } 73 }