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Java example source code file (FileBody.java)

This example source code file (FileBody.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java tags/keywords

abstractcontentbody, deprecated, file, filebody, illegalargumentexception, inputstream, io, ioexception, notthreadsafe, outputstream, override, string

The FileBody.java example source code

/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.http.entity.mime.content;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.http.annotation.NotThreadSafe;

import org.apache.http.entity.mime.MIME;

/**
 *
 * @since 4.0
 */
@NotThreadSafe // parent is @NotThreadSafe
public class FileBody extends AbstractContentBody {

    private final File file;
    
    public FileBody(final File file, final String mimeType) {
        super(mimeType);
        if (file == null) {
            throw new IllegalArgumentException("File may not be null");
        }
        this.file = file;
    }
    
    public FileBody(final File file) {
        this(file, "application/octet-stream");
    }
    
    public InputStream getInputStream() throws IOException {
        return new FileInputStream(this.file);
    }

    /**
     * @deprecated use {@link #writeTo(OutputStream)}
     */
    @Deprecated
    public void writeTo(final OutputStream out, int mode) throws IOException {
        writeTo(out);
    }

    @Override
    public void writeTo(final OutputStream out) throws IOException {
        if (out == null) {
            throw new IllegalArgumentException("Output stream may not be null");
        }
        InputStream in = new FileInputStream(this.file);
        try {
            byte[] tmp = new byte[4096];
            int l;
            while ((l = in.read(tmp)) != -1) {
                out.write(tmp, 0, l);
            }
            out.flush();
        } finally {
            in.close();
        }
    }

    public String getTransferEncoding() {
        return MIME.ENC_BINARY;
    }

    public String getCharset() {
        return null;
    }

    public long getContentLength() {
        return this.file.length();
    }
    
    public String getFilename() {
        return this.file.getName();
    }
    
    public File getFile() {
        return this.file;
    }

}

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