Java 批量文件压缩导出，并下载到本地

 @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) {
            ....
        }
    }

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<Test> 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);
　　　}
　　}