package com.sc.common;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.view.document.AbstractExcelView;
import javax.mail.internet.MimeUtility;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.OutputStream;
import java.net.URLEncoder;
import java.util.Map;
/**
* maqh
* 2015/12/5.
*/
public class ViewExcel extends AbstractExcelView {
@Override
protected void buildExcelDocument(Map<String, Object> map, HSSFWorkbook hssfWorkbook, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws Exception {
}
/**
* 统一下载excel使用
* @param map
* @param workbook
* @param request
* @param response
* @param filename
* @throws Exception
*/
public void buildExcelDocument(Map<String, Object> map, HSSFWorkbook workbook, HttpServletRequest request, HttpServletResponse response ,String filename) throws Exception {
filename = encodeFilename(filename, request);//处理中文文件名
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-disposition", "attachment;filename=" + filename);
OutputStream ouputStream = response.getOutputStream();
workbook.write(ouputStream);
ouputStream.flush();
ouputStream.close();
}
public static String encodeFilename(String filename, HttpServletRequest request) {
/**
* 获取客户端浏览器和操作系统信息
* 在IE浏览器中得到的是:User-Agent=Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; Alexa Toolbar)
* 在Firefox中得到的是:User-Agent=Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.7.10) Gecko/20050717 Firefox/1.0.6
*/
String agent = request.getHeader("USER-AGENT");
try {
if ((agent != null) && (-1 != agent.indexOf("MSIE"))) {
String newFileName = URLEncoder.encode(filename, "UTF-8");
newFileName = StringUtils.replace(newFileName, "+", "%20");
if (newFileName.length() > 150) {
newFileName = new String(filename.getBytes("GB2312"), "ISO8859-1");
newFileName = StringUtils.replace(newFileName, " ", "%20");
}
return newFileName;
}
if ((agent != null) && (-1 != agent.indexOf("Mozilla")))
return MimeUtility.encodeText(filename, "UTF-8", "B");
return filename;
} catch (Exception ex) {
return filename;
}
}
}