cn.isif.util_plus.http.client.entity.FileUploadEntity.java Source code

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Here is the source code for cn.isif.util_plus.http.client.entity.FileUploadEntity.java

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/*
 * Copyright (c) 2013. wyouflf (wyouflf@gmail.com)
 *
 * 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 cn.isif.util_plus.http.client.entity;

import org.apache.http.entity.FileEntity;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.io.OutputStream;

import cn.isif.util_plus.http.callback.RequestCallBackHandler;
import cn.isif.util_plus.util.IOUtils;

/**
 * Created with IntelliJ IDEA.
 * User: wyouflf
 * Date: 13-6-24
 * Time: ?4:45
 */
public class FileUploadEntity extends FileEntity implements UploadEntity {

    public FileUploadEntity(File file, String contentType) {
        super(file, contentType);
        fileSize = file.length();
    }

    private long fileSize;
    private long uploadedSize = 0;

    @Override
    public void writeTo(OutputStream outStream) throws IOException {
        if (outStream == null) {
            throw new IllegalArgumentException("Output stream may not be null");
        }
        BufferedInputStream inStream = null;
        try {
            inStream = new BufferedInputStream(new FileInputStream(this.file));
            byte[] tmp = new byte[4096];
            int len;
            while ((len = inStream.read(tmp)) != -1) {
                outStream.write(tmp, 0, len);
                uploadedSize += len;
                if (callBackHandler != null) {
                    if (!callBackHandler.updateProgress(fileSize, uploadedSize, false)) {
                        throw new InterruptedIOException("cancel");
                    }
                }
            }
            outStream.flush();
            if (callBackHandler != null) {
                callBackHandler.updateProgress(fileSize, uploadedSize, true);
            }
        } finally {
            IOUtils.closeQuietly(inStream);
        }
    }

    private RequestCallBackHandler callBackHandler = null;

    @Override
    public void setCallBackHandler(RequestCallBackHandler callBackHandler) {
        this.callBackHandler = callBackHandler;
    }
}