cn.afterturn.easypoi.cache.manager.FileLoaderImpl Maven / Gradle / Ivy
/**
* Copyright 2013-2015 JueYue ([email protected])
*
* 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.afterturn.easypoi.cache.manager;
import cn.afterturn.easypoi.util.PoiPublicUtil;
import org.apache.poi.util.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.net.URL;
import java.net.URLConnection;
/**
* 文件加载类,根据路径加载指定文件
*
* @author JueYue
* 2014年2月10日
* @version 1.0
*/
public class FileLoaderImpl implements IFileLoader {
private static final Logger LOGGER = LoggerFactory.getLogger(FileLoaderImpl.class);
@Override
public byte[] getFile(String url) {
InputStream fileis = null;
ByteArrayOutputStream baos = null;
try {
//判断是否是网络地址
if (url.startsWith("http")) {
URL urlObj = new URL(url);
URLConnection urlConnection = urlObj.openConnection();
urlConnection.setConnectTimeout(30 * 1000);
urlConnection.setReadTimeout(60 * 1000);
urlConnection.setDoInput(true);
fileis = urlConnection.getInputStream();
} else {
//先用绝对路径查询,再查询相对路径
try {
fileis = new FileInputStream(url);
} catch (FileNotFoundException e) {
//获取项目文件
fileis = FileLoaderImpl.class.getClassLoader().getResourceAsStream(url);
}
}
baos = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len;
while ((len = fileis.read(buffer)) > -1) {
baos.write(buffer, 0, len);
}
baos.flush();
return baos.toByteArray();
} catch (Exception e) {
LOGGER.error(e.getMessage(), e);
} finally {
IOUtils.closeQuietly(fileis);
IOUtils.closeQuietly(baos);
}
LOGGER.error(fileis + "这个路径文件没有找到,请查询");
return null;
}
}