Java InputStream to File InputStreamToFile(final InputStream stream, final File file)

Description

Input Stream To File

License

Open Source License

Declaration

public static long InputStreamToFile(final InputStream stream, final File file) throws IOException 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright (c) 2010-2014 Alexander Kerner. All rights reserved.
 *
 * 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./*  w  w w .  j a  v a 2s  .c  o m*/
 ******************************************************************************/

import java.io.Closeable;
import java.io.File;

import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

import java.io.Reader;

import java.io.Writer;

public class Main {
    /**
     * The JCL book specifies the default buffer size as 8K characters.
     */
    public static final int DEFAULT_BUFFER = 8192;

    public static long InputStreamToFile(final InputStream stream, final File file) throws IOException {
        final FileWriter w = new FileWriter(file);
        final InputStreamReader r = new InputStreamReader(stream);
        final long result = readerToWriter(new InputStreamReader(stream), w);
        closeProperly(w);
        closeProperly(r);
        return result;
    }

    /**
     * Copies the content of a <code>Reader</code> to a <code>Writer</code>.
     * Will flush the <code>Writer</code>, but won't close <code>Reader</code>
     * or <code>Writer</code>.
     *
     * @param reader
     *            <code>Reader</code> from which data is read.
     * @param writer
     *            <code>Writer</code> to which data is written.
     * @return number of bytes read/ written.
     * @throws IOException
     */
    public static long readerToWriter(final Reader reader, final Writer writer) throws IOException {
        return readerToWriter(reader, writer, 0);
    }

    /**
     * Copies the content of a <code>Reader</code> to a <code>Writer</code>.
     * Will flush the <code>Writer</code>, but won't close <code>Reader</code>
     * or <code>Writer</code>.
     *
     * @param reader
     *            <code>Reader</code> from which data is read.
     * @param writer
     *            <code>Writer</code> to which data is written.
     * @param buffer
     *            the number of bytes to buffer reading.
     * @return number of bytes read/written.
     * @throws IOException
     */
    public static long readerToWriter(final Reader reader, final Writer writer, int buffer) throws IOException {
        if (buffer < 1)
            buffer = DEFAULT_BUFFER;
        final char[] charBuffer = new char[buffer];
        long count = 0;
        int n = 0;
        while ((n = reader.read(charBuffer)) != -1) {
            writer.write(charBuffer, 0, n);
            count += n;
        }
        writer.flush();
        return count;
    }

    /**
     *
     * @deprecated Use {@link CloserProperly} instead.
     */
    @Deprecated
    public static void closeProperly(final Closeable closable) {
        if (closable != null)
            try {
                closable.close();
            } catch (final Exception e) {
                e.printStackTrace();
            }

    }
}

Related

1. inputStream2File(InputStream in, File file)
2. InputStream2File(InputStream in, String filePath)
3. inputStreamToFile(InputStream byteStream, String pathFileName)
4. inputStreamToFile(InputStream in, File file)
5. inputStreamToFile(InputStream ins, File file)
6. inputstreamtofile(InputStream ins, File file)