org.springframework.web.multipart.support.StringMultipartFileEditor Maven / Gradle / Ivy
/*
* Copyright 2002-2006 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
*
* http://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.beans.PropertyEditorSupport;
import java.io.IOException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.web.multipart.MultipartFile;
/**
* Custom {@link java.beans.PropertyEditor} for converting
* {@link org.springframework.web.multipart.MultipartFile MultipartFiles}
* to Strings.
*
* Allows one to specify the charset to use.
*
* @author Juergen Hoeller
* @since 13.10.2003
*/
public class StringMultipartFileEditor extends PropertyEditorSupport {
/** Static to avoid creating a new logger every time */
private static final Log logger = LogFactory.getLog(StringMultipartFileEditor.class);
private final String charsetName;
/**
* Create a new {@link StringMultipartFileEditor}, using the default charset.
*/
public StringMultipartFileEditor() {
this.charsetName = null;
}
/**
* Create a new {@link StringMultipartFileEditor}, using the given charset.
* @param charsetName valid charset name
* @see java.lang.String#String(byte[],String)
*/
public StringMultipartFileEditor(String charsetName) {
this.charsetName = charsetName;
}
public void setAsText(String text) {
setValue(text);
}
public void setValue(Object value) {
if (value instanceof MultipartFile) {
MultipartFile multipartFile = (MultipartFile) value;
try {
super.setValue(this.charsetName != null ?
new String(multipartFile.getBytes(), this.charsetName) :
new String(multipartFile.getBytes()));
}
catch (IOException ex) {
logger.warn("Cannot read contents of multipart file", ex);
throw new IllegalArgumentException("Cannot read contents of multipart file: " + ex.getMessage());
}
}
else {
super.setValue(value);
}
}
}