Java 批量文件压缩导出并下载到本地示例代码

 @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);　　　}　　}