java的多个excel打包成zip下载

多excel打包成zip是利用servlet进行的：

1.在jsp页面：首先我们要调用servlet后台：

window.location = ApBase.contextPath+'/servlet/ReportServlet?reportType=loginReport&start_date='+$("#startDate").val()+'&end_date='+$("#endDate").val()+'&lan_id='+$("#lan_id").val();
以上代码是交互servlet后台(web.xml)自己配一下

2.ReportServlet：

package com.hyz.appportal.inf.report.servlet;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import java.net.URLDecoder;

import java.net.URLEncoder;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Date;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.logging.log4j.LogManager;

import org.apache.logging.log4j.Logger;

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

import org.apache.poi.ss.usermodel.Cell;

import org.apache.poi.ss.usermodel.CellStyle;

import org.apache.poi.ss.usermodel.Row;

import org.apache.poi.ss.usermodel.Sheet;

import org.apache.poi.ss.usermodel.Workbook;

import org.apache.poi.ss.util.CellRangeAddress;

import com.hyz.appportal.config.AppPortalConst;

import com.hyz.appportal.inf.report.model.LoginReportRequest;

import com.hyz.appportal.inf.report.service.LoginReportService;

import com.hyz.appportal.inf.statistics.model.StatisticsRequest;

import com.hyz.framework.service.ServiceFactory;

import com.hyz.util.ZipUtil;

public class ReportServlet extends HttpServlet{

/**

* 日志

*/

private Logger log = LogManager.getLogger(ReportServlet.class);

private String fileName;

private String reportType;

private String start_date="";

private String end_date="";

private String lan_id = "";

private static int REPORTPAGECOUNT = 100000;

public ReportServlet() {

super();

}

public void destroy() {

super.destroy(); // Just puts "destroy" string in log

// Put your code here

}

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

request.setCharacterEncoding("GBK");

response.setContentType("text/html; charset=GBK");

//得到生成的是什么报表

reportType = request.getParameter("reportType");

//得到开始时间

start_date = request.getParameter("start_date");

end_date = request.getParameter("end_date");

lan_id = request.getParameter("lan_id");

// 文件名获取

Date date = new Date();

SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");

String f = reportType + format.format(date);

this.fileName = f;

setResponseHeader(response);

OutputStream out = null;

try {

out = response.getOutputStream();

if(!reportType.equals("orderReport")){

toLoginExcel(request,REPORTPAGECOUNT,f,out);

}else{

toOrderExcel(request, REPORTPAGECOUNT, f, out);

}

} catch (Exception e1) {

e1.printStackTrace();

} finally {

try {

out.flush();

out.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}

/** 设置响应头 */

public void setResponseHeader(HttpServletResponse response) {

try {

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

response.setHeader("Content-Disposition", "attachment;filename="

+ java.net.URLEncoder.encode(this.fileName, "GBK")

+ ".zip");

response.addHeader("Pargam", "no-cache");

response.addHeader("Cache-Control", "no-cache");

} catch (Exception ex) {

ex.printStackTrace();

}

}

public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

doGet(request, response);

}

public void init() throws ServletException {

// Put your code here

}

public void toLoginExcel( HttpServletRequest request,

int length, String f, OutputStream out) throws Exception {

try {

log.debug("登录量报表生产成");

List<String> fileNames = new ArrayList<String>();// 用于存放生成的文件名称s

File zip = new File(AppPortalConst.REPORT_PATH + "/" + f + ".zip");// 压缩文件

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

LoginReportRequest loginRequest = new LoginReportRequest();

loginRequest.setStart_date(start_date);

loginRequest.setEnd_date(end_date);

loginRequest.setLan_id(lan_id);

List<Map<String, Object>> list;

String filename;

if(loginCount == 0){

//查询所有的lan

list = ServiceFactory.invokeService("loginReportDao", "loginReportByAllLan",loginRequest);

filename = "登录报表-本地网报表";

}else if(loginCount == 1){

//查询相关的市县

list = ServiceFactory.invokeService("loginReportDao", "loginReportByRegion",loginRequest);

filename = "登录报表-市县报表";

}else{

//查询相关的用户

list = ServiceFactory.invokeService("loginReportDao", "loginReportByCustDetail",loginRequest);

filename = "登录报表-用户信息报表";

}

// 生成excel

for (int j = 0, n = list.size() / length + 1; j < n; j++) {

Workbook book = new HSSFWorkbook();

Sheet sheet = book.createSheet(filename+"-"+n);

File dir = new File(AppPortalConst.REPORT_PATH);

if (!dir.exists()) {

dir.mkdirs();

}

if (!dir.isDirectory()) {

throw new IOException("dest dir (" + dir + ") is not a folder");

}

String file = AppPortalConst.REPORT_PATH + "/" + filename +"-" +f+ "-" + j

+ ".xls";

fileNames.add(file);

FileOutputStream o = null;

try {

o = new FileOutputStream(file);

Row row = sheet.createRow(0);

if(loginCount == 0){

row.createCell(0).setCellValue("本地网");

row.createCell(1).setCellValue("登录量");

}else if(loginCount == 1){

row.createCell(0).setCellValue("市县");

row.createCell(1).setCellValue("登录量");

}else{

row.createCell(0).setCellValue("本地网");

row.createCell(1).setCellValue("市县");

row.createCell(2).setCellValue("店中商名称");

row.createCell(3).setCellValue("工号");

row.createCell(4).setCellValue("姓名");

row.createCell(5).setCellValue("手机号");

row.createCell(6).setCellValue("登录时间");

}

int m = 1;

for (int i = 1, min = (list.size() - j * length + 1) > (length + 1) ? (length + 1)

: (list.size() - j * length + 1); i < min; i++) {

m++;

Map<String, Object> map = list.get(length * (j) + i - 1);

row = sheet.createRow(i);

//填充数据

if(loginCount == 0){

row.createCell(0).setCellValue(map.get("lan_name").toString());

row.createCell(1).setCellValue(map.get("count").toString());

}else if(loginCount == 1){

row.createCell(0).setCellValue(map.get("region_name").toString());

row.createCell(1).setCellValue(map.get("count").toString());

}else{

row.createCell(0).setCellValue(map.get("lan_name").toString());

row.createCell(1).setCellValue(map.get("region_name").toString());

row.createCell(2).setCellValue(map.get("org_name").toString());

row.createCell(3).setCellValue(map.get("staff_code").toString());

row.createCell(4).setCellValue(map.get("staff_name").toString());

row.createCell(5).setCellValue(map.get("attr_value").toString());

row.createCell(6).setCellValue(map.get("request_time").toString());

}

}

CellStyle cellStyle2 = book.createCellStyle();

cellStyle2.setAlignment(CellStyle.ALIGN_CENTER);

sheet.addMergedRegion(new CellRangeAddress(m, m, 0, 3));

} catch (Exception e) {

e.printStackTrace();

}

try {

book.write(o);

} catch (Exception ex) {

ex.printStackTrace();

} finally {

o.flush();

o.close();

}

}

}

File srcfile[] = new File[fileNames.size()];

for (int i = 0, n = fileNames.size(); i < n; i++) {

srcfile[i] = new File(fileNames.get(i));

}

ZipUtil.ZipFiles(srcfile, zip);

//ZipUtil.zip(request.getServletContext().getRealPath("/reportFiles") + "/" + f + ".zip", srcfile);

FileInputStream inStream = new FileInputStream(zip);

byte[] buf = new byte[4096];

int readLength;

while (((readLength = inStream.read(buf)) != -1)) {

out.write(buf, 0, readLength);

}

inStream.close();

//删除服务器上的文件

File dir = new File(AppPortalConst.REPORT_PATH);

File[] fileList = dir.listFiles();

for(int i = 0;i<fileList.length;i++){

fileList[i].delete();

}

} catch (Exception e) {

e.printStackTrace();

}

}

}

3.以下是zipUtil的代码(建议压缩引用apache的，可以解决中文乱码)

package com.hyz.util;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

import java.util.Enumeration;

import java.util.regex.Pattern;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.apache.tools.zip.ZipEntry;

import org.apache.tools.zip.ZipFile;

import org.apache.tools.zip.ZipOutputStream;

public class ZipUtil {

private static final Log log = LogFactory.getLog(ZipUtil.class);

private static int BUF_SIZE = 1024;

private static String ZIP_ENCODEING = "GBK";

/**

* 压缩文件或文件夹

*

* @param zipFileName

* @param inputFile

* @throws Exception

*/

public void zip(String zipFileName, String inputFile) throws Exception {

zip(zipFileName, new File(inputFile));

}

/**

* 压缩文件或文件夹

*

* @param zipFileName

* @param inputFile

* @throws Exception

*/

public static void zip(String zipFileName, File inputFile) throws Exception {

// 未指定压缩文件名，默认为"ZipFile"

if (zipFileName == null || zipFileName.equals(""))

zipFileName = "ZipFile";

// 添加".zip"后缀

if (!zipFileName.endsWith(".zip"))

zipFileName += ".zip";

// 创建文件夹

String path = Pattern.compile("[\\/]").matcher(zipFileName).replaceAll(File.separator);

int endIndex = path.lastIndexOf(File.separator);

path = path.substring(0, endIndex);

File f = new File(path);

f.mkdirs();

// 开始压缩

{

ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFileName)));

zos.setEncoding(ZIP_ENCODEING);

compress(zos, inputFile, "");

log.debug("zip done");

zos.close();

}

}

/**

* 解压缩zip压缩文件到指定目录

*

* @param unZipFileName

* @param outputDirectory

* @throws Exception

*/

public static void unZip(String unZipFileName, String outputDirectory) throws Exception {

// 创建输出文件夹对象

File outDirFile = new File(outputDirectory);

outDirFile.mkdirs();

// 打开压缩文件文件夹

ZipFile zipFile = new ZipFile(unZipFileName, ZIP_ENCODEING);

for (Enumeration entries = zipFile.getEntries(); entries.hasMoreElements();) {

ZipEntry ze = (ZipEntry) entries.nextElement();

File file = new File(outDirFile, ze.getName());

if (ze.isDirectory()) {// 是目录，则创建之

file.mkdirs();

log.debug("mkdir " + file.getAbsolutePath());

} else {

File parent = file.getParentFile();

if (parent != null && !parent.exists()) {

parent.mkdirs();

}

log.debug("unziping " + ze.getName());

file.createNewFile();

FileOutputStream fos = new FileOutputStream(file);

InputStream is = zipFile.getInputStream(ze);

inStream2outStream(is, fos);

fos.close();

is.close();

}

}

zipFile.close();

}

/**

* 压缩一个文件夹或文件对象到已经打开的zip输出流 <b>不建议直接调用该方法</b>

*

* @param zos

* @param f

* @param fileName

* @throws Exception

*/

public static void compress(ZipOutputStream zos, File f, String fileName) throws Exception {

log.debug("Zipping " + f.getName());

if (f.isDirectory()) {

// 压缩文件夹

File[] fl = f.listFiles();

zos.putNextEntry(new ZipEntry(fileName + "/"));

fileName = fileName.length() == 0 ? "" : fileName + "/";

for (int i = 0; i < fl.length; i++) {

compress(zos, fl[i], fileName + fl[i].getName());

}

} else {

// 压缩文件

zos.putNextEntry(new ZipEntry(fileName));

FileInputStream fis = new FileInputStream(f);

inStream2outStream(fis, zos);

fis.close();

zos.closeEntry();

}

}

private static void inStream2outStream(InputStream is, OutputStream os) throws IOException {

BufferedInputStream bis = new BufferedInputStream(is);

BufferedOutputStream bos = new BufferedOutputStream(os);

int bytesRead = 0;

for (byte[] buffer = new byte[BUF_SIZE]; ((bytesRead = bis.read(buffer, 0, BUF_SIZE)) != -1);) {

bos.write(buffer, 0, bytesRead); // 将流写入

}

}

/**

*

* @param srcfile 文件名数组

* @param zipfile 压缩后文件

*/

public static void ZipFiles(java.io.File[] srcfile, java.io.File zipfile) {

byte[] buf = new byte[1024];

try {

ZipOutputStream out = new ZipOutputStream(new FileOutputStream(

zipfile));

out.setEncoding("GBK");

for (int i = 0; i < srcfile.length; i++) {

FileInputStream in = new FileInputStream(srcfile[i]);

out.putNextEntry(new ZipEntry(srcfile[i].getName()));

int len;

while ((len = in.read(buf)) > 0) {

out.write(buf, 0, len);

}

out.closeEntry();

in.close();

}

out.close();

} catch (IOException e) {

e.printStackTrace();

}

}

}