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/**
* Copyright (C) 2017 CMCC, Inc. and others. 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.
*/
package org.onap.usecaseui.server.util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.http.HttpServletResponse;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class ResponseUtil {
private static Logger logger = LoggerFactory.getLogger(ResponseUtil.class);
public static boolean responseDownload(String filePath, HttpServletResponse response){
if (null != response){
response.setCharacterEncoding("utf-8");
response.setContentType("application/csv");
response.setHeader("Content-Disposition","attachment;filename="+filePath);
try(InputStream is = new FileInputStream(filePath);
OutputStream os = response.getOutputStream()){
byte[] b = new byte[2048];
int length;
while ((length = is.read(b)) > 0) {
os.write(b, 0, length);
}
return true;
}catch (IOException e){
logger.error("download csv File error :"+e.getMessage());
return false;
}
}else{
logger.error("csvFile generate success,but response is null,don't download to local");
return false;
}
}
}
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