甘肃省建设类证书查询网站/seo专业培训技术

主要用的是org.apache.tools.zip.ZipOutputStream  这个zip流，这里以Execl为例子。

思路首先把zip流写入到http响应输出流中，再把excel的流写入zip流中(这里可以不用生成文件再打包，只需把execl模板读出写好数据输出到zip流中，并为每次的流设置文件名)

例如：在项目webapp下execl文件中 存在1.xls，2.xls，3.xls文件

1.Controller

@RequestMapping(value = "/exportAll",method = RequestMethod.GET)

public void exportAll() throws IOException{

try {

HttpServletResponse response=this.getResponse();

response.setContentType("application/octet-stream");

String execlName = "报表";

response.addHeader("Content-Disposition", "attachment;filename="+new String(execlName.getBytes(),"iso-8859-1") +".zip");

OutputStream out = response.getOutputStream();

testService.exportAll(out);

} catch (Exception e) {

....

}

}

2.Service

import java.io.OutputStream;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.tools.zip.ZipEntry;

import org.apache.tools.zip.ZipOutputStream;

import java.io.File;

import java.io.FileInputStream;

import javax.servlet.http.HttpServletRequest;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.poifs.filesystem.POIFSFileSystem;

import org.springframework.web.context.request.RequestContextHolder;

import org.springframework.web.context.request.ServletRequestAttributes;

public boolean exportAll(OutputStream out){

ZipOutputStream zipStream = null;

HSSFWorkbook wb = null;

try{

List datas = testService.getTestData();

zipStream = new ZipOutputStream(out);//这里是把zip流输出到httpresponse流中

for(int i=0;i<3;i++){

wb = POIUtil.getWorkbook(i);//获取0,1,2.xls文件

HSSFSheet sheet = wb.getSheetAt(0);

testService.setSheet(sheet,datas);//...处理文件内容操作

ZipEntry zipEntry = new ZipEntry(new String("文件名XXX".getBytes(),"utf-8")+".xls"); //自己命名，这里假设是1,2,3

zipStream.putNextEntry(zipEntry);

wb.write(zipStream);//这里就是循环每次把execl写入zip包中

zipStream.flush();

}

}catch (Exception e) {

throw new SysException(ERRORConstants.COMMON_SYSTEM_ERROR, e);

}finally {

try {

if(wb!=null){

wb.close();

}

if(zipStream!=null){

zipStream.close();

}

out.flush();

out.close();

} catch (IOException e) {

throw new SysException(ERRORConstants.COMMON_CLOSE_ERROR, e);

}

}

}

public static HSSFWorkbook getWorkbook(String bh){

try {

String line = File.separator;

ServletRequestAttributes aRequestAttributes=(ServletRequestAttributes)RequestContextHolder.getRequestAttributes();

HttpServletRequest request =aRequestAttributes==null?null:aRequestAttributes.getRequest();

String webpath=request.getServletContext().getRealPath("/");

File file = new File(webpath+line+"excel"+line+bh+".xls");

POIFSFileSystem poifsFileSystem = new POIFSFileSystem(new FileInputStream(file));

HSSFWorkbook wb = new HSSFWorkbook(poifsFileSystem);

return wb;

} catch (Exception e) {

throw new SysException(ERRORConstants.COMMON_SYSTEM_ERROR,e);

}

}

最后的结果生成一个报表.zip，其中包含3个文件1.xls,2.xls,3.xls

总结

以上所述是小编给大家介绍的Java 批量文件压缩导出并下载到本地示例代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！