org.springframework.web.multipart.support.ByteArrayMultipartFileEditor.java Source code

Introduction

Here is the source code for org.springframework.web.multipart.support.ByteArrayMultipartFileEditor.java

Source

/*
 * Copyright 2002-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.web.multipart.support;

import java.io.IOException;

import org.springframework.beans.propertyeditors.ByteArrayPropertyEditor;
import org.springframework.lang.Nullable;
import org.springframework.web.multipart.MultipartFile;

/**
 * Custom {@link java.beans.PropertyEditor} for converting
 * {@link MultipartFile MultipartFiles} to byte arrays.
 *
 * @author Juergen Hoeller
 * @since 13.10.2003
 */
public class ByteArrayMultipartFileEditor extends ByteArrayPropertyEditor {

    @Override
    public void setValue(@Nullable Object value) {
        if (value instanceof MultipartFile) {
            MultipartFile multipartFile = (MultipartFile) value;
            try {
                super.setValue(multipartFile.getBytes());
            } catch (IOException ex) {
                throw new IllegalArgumentException("Cannot read contents of multipart file", ex);
            }
        } else if (value instanceof byte[]) {
            super.setValue(value);
        } else {
            super.setValue(value != null ? value.toString().getBytes() : null);
        }
    }

    @Override
    public String getAsText() {
        byte[] value = (byte[]) getValue();
        return (value != null ? new String(value) : "");
    }

}