fileitemfactory.java

java上传文件的一个例子。使用了apache的第三方开源组件。

/*
 * Copyright 2001-2004 The Apache Software Foundation
 *
 * 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.apache.commons.fileupload;


/**
 * <p>A factory interface for creating {@link FileItem} instances. Factories
 * can provide their own custom configuration, over and above that provided
 * by the default file upload implementation.</p>
 *
 * @author <a href="mailto:[e-mail]">Martin Cooper</a>
 *
 * @version $Id: FileItemFactory.java 155417 2005-02-26 13:00:27Z dirkv $
 */
public interface FileItemFactory {

    /**
     * Create a new {@link FileItem} instance from the supplied parameters and
     * any local factory configuration.
     *
     * @param fieldName   The name of the form field.
     * @param contentType The content type of the form field.
     * @param isFormField <code>true</code> if this is a plain form field;
     *                    <code>false</code> otherwise.
     * @param fileName    The name of the uploaded file, if any, as supplied
     *                    by the browser or other client.
     *
     * @return The newly created file item.
     */
    FileItem createItem(
            String fieldName,
            String contentType,
            boolean isFormField,
            String fileName
            );
}