poi导出excel比js导出excel安全性更好，在使用poi导出excel时，先要导入poi-3.5-FINAL-20090928.jar包到你项目的lib目录下，我这里选择是3.5版的
1.action类
package com.szallway.phr2.portal.action;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.struts2.interceptor.RequestAware;
import org.apache.struts2.interceptor.SessionAware;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;
import com.szallway.phr2.portal.factory.ServiceFactory;
import com.szallway.phr2.portal.po.Account;
import com.szallway.phr2.portal.po.Counter;
import com.szallway.phr2.portal.po.Friend;
import com.szallway.phr2.portal.po.Healthbackground;
import com.szallway.phr2.portal.po.Permission;
import com.szallway.phr2.portal.po.Profile;
import com.szallway.phr2.portal.service.CounterService;
import com.szallway.phr2.portal.service.FriendService;
import com.szallway.phr2.portal.service.HealthbackgroundService;
import com.szallway.phr2.portal.service.PermissionService;
import com.szallway.phr2.portal.service.ProfileService;
import com.szallway.phr2.portal.util.ProfileIDGender;
public class FriendAction extends ActionSupport implements SessionAware,RequestAware, ModelDriven{
private Map<String, Object> session;
private Map<String, Object> request;
private Friend friend;
private String areacode;
private int profid;
private InputStream excelStream; //定义一输入流
private String fileName; //文件名
public String getFileName() {
return fileName;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
public InputStream getExcelStream() {
return excelStream;
}
public void setExcelStream(InputStream excelStream) {
this.excelStream = excelStream;
}
public int getProfid() {
return profid;
}
public void setProfid(int profid) {
this.profid = profid;
}
public String getAreacode() {
return areacode;
}
public void setAreacode(String areacode) {
this.areacode = areacode;
}
public Friend getFriend() {
return friend;
}
public void setFriend(Friend friend) {
this.friend = friend;
}
@Override
public void setSession(Map<String, Object> session) {
// TODO Auto-generated method stub
this.session = session;
}
@Override
public Object getModel() {
// TODO Auto-generated method stub
friend = new Friend();
return friend;
}
FriendService fser = ServiceFactory.getFriendServieInstance();
//查看所属档案的常用联系人
public String selectfriendlist()throws Exception
{
Profile profile = (Profile)session.get("profile");
List list = null;
try{
list = fser.byprofileid(profile.getProfileid());
}catch(Exception e){
e.printStackTrace();
}
// 没有紧急联系人，就添加
session.put("friendlist", list);
request.put("tabletype", "friendlist");
request.put("sjtabletype", "sjfriendlist");
request.put("pagination", "");
return SUCCESS;
}
//导出所属档案的常用联系人为excel
public String exportFriend() throws Exception{
HSSFWorkbook hssfworkbook = new HSSFWorkbook();
HSSFSheet hssfsheet = hssfworkbook.createSheet();
HSSFRow hssfrow = hssfsheet.createRow(0);
//定义表头
hssfrow.createCell((short)0).setCellValue("姓名");
hssfrow.createCell((short)1).setCellValue("性别");
hssfrow.createCell((short)2).setCellValue("所属关系");
hssfrow.createCell((short)3).setCellValue("手机号码");
hssfrow.createCell((short)4).setCellValue("电子邮件");
Profile profile = (Profile)session.get("profile");
int i = 1;
Iterator it = fser.byprofileid(profile.getProfileid()).iterator(); //根据档案id查看他所有的常用联系人，并迭代
//添加表内容
while (it.hasNext()) {
Friend friend = (Friend) it.next();
hssfrow = hssfsheet.createRow(i);
hssfrow.createCell((short)0).setCellValue(friend.getFname());
hssfrow.createCell((short)1).setCellValue(friend.getFgender());
hssfrow.createCell((short)2).setCellValue(friend.getFrelationship());
hssfrow.createCell((short)3).setCellValue(friend.getFmobilephone());
hssfrow.createCell((short)4).setCellValue(friend.getFemail());
i++;
}
FileOutputStream fileoutputstream = null;
try {
// fileoutputstream = new FileOutputStream("d:\Friend.xls");
// hssfworkbook.write(fileoutputstream);
// fileoutputstream.close();
this.fileName = "friend";
ByteArrayOutputStream baos = new ByteArrayOutputStream();
hssfworkbook.write(baos);
baos.flush();
byte[] aa = baos.toByteArray();
// String filename = "friend";
excelStream = new ByteArrayInputStream(aa,0, aa.length);
baos.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
e.printStackTrace();
}
return SUCCESS;
}
@Override
public void setRequest(Map<String, Object> request) {
// TODO Auto-generated method stub
this.request = request;
}
}
2.struts内定义action
<!-- 导出常用联系人为excel -->
<action name="exportFriend" class="com.szallway.phr2.portal.action.FriendAction" method="exportFriend">
<!-- <result name="success" type="redirectAction">selectfriendlist</result> -->
<result name="success" type="stream">
<!-- 文件类型 -->
<param name="contentType"> application/vnd.ms-excel</param>
<!-- excelStream 与对应action中的输入流的名字要一致 -->
<param name= " inputName"> excelStream</param>
<!-- 文件名 与action中fileName一致 -->
<param name="contentDisposition">attachment;filename=" ${fileName}.xls"</param>
</result>
</action>
3.jsp页面
在jsp页面只需加入<a href="exportFriend.action">导出excel</a>这样一连接或者表单按钮
<form action="exportFriend.action" method="post"><input type="submit" value="导出excel"/></from>
4.效果图