001/* 002 * Copyright 2002-2017 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.lang.Nullable; 023import org.springframework.web.multipart.MultipartFile; 024 025/** 026 * Custom {@link java.beans.PropertyEditor} for converting 027 * {@link MultipartFile MultipartFiles} to byte arrays. 028 * 029 * @author Juergen Hoeller 030 * @since 13.10.2003 031 */ 032public class ByteArrayMultipartFileEditor extends ByteArrayPropertyEditor { 033 034 @Override 035 public void setValue(@Nullable Object value) { 036 if (value instanceof MultipartFile) { 037 MultipartFile multipartFile = (MultipartFile) value; 038 try { 039 super.setValue(multipartFile.getBytes()); 040 } 041 catch (IOException ex) { 042 throw new IllegalArgumentException("Cannot read contents of multipart file", ex); 043 } 044 } 045 else if (value instanceof byte[]) { 046 super.setValue(value); 047 } 048 else { 049 super.setValue(value != null ? value.toString().getBytes() : null); 050 } 051 } 052 053 @Override 054 public String getAsText() { 055 byte[] value = (byte[]) getValue(); 056 return (value != null ? new String(value) : ""); 057 } 058 059}