001/*
002 * Copyright 2002-2008 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.web.multipart.support;
018
019import java.io.IOException;
020
021import org.springframework.beans.propertyeditors.ByteArrayPropertyEditor;
022import org.springframework.web.multipart.MultipartFile;
023
024/**
025 * Custom {@link java.beans.PropertyEditor} for converting
026 * {@link MultipartFile MultipartFiles} to byte arrays.
027 *
028 * @author Juergen Hoeller
029 * @since 13.10.2003
030 */
031public class ByteArrayMultipartFileEditor extends ByteArrayPropertyEditor {
032
033        @Override
034        public void setValue(Object value) {
035                if (value instanceof MultipartFile) {
036                        MultipartFile multipartFile = (MultipartFile) value;
037                        try {
038                                super.setValue(multipartFile.getBytes());
039                        }
040                        catch (IOException ex) {
041                                throw new IllegalArgumentException("Cannot read contents of multipart file", ex);
042                        }
043                }
044                else if (value instanceof byte[]) {
045                        super.setValue(value);
046                }
047                else {
048                        super.setValue(value != null ? value.toString().getBytes() : null);
049                }
050        }
051
052        @Override
053        public String getAsText() {
054                byte[] value = (byte[]) getValue();
055                return (value != null ? new String(value) : "");
056        }
057
058}