导出excel
今天准备做报表但找了一些网上的资料也比较零碎。今天特意整理一下。现在开始吧需要的文件有DateUtil.java ,里面有个方法要调用。
/**
* 获取指定格式的当前日期字符串
* @param patten 格式化字符串
* @return
*/
public static String getDate(String patten) {
SimpleDateFormat sf = new SimpleDateFormat(patten);
return sf.format(new Date());
}
public static String getTime() {
return DateUtil.getDate("yyyyMMddhhmmss");
}
然后就是我的exporting.jsp文件
<%@ page contentType="text/html; charset=gb2312" language="java"errorPage="" %>
<%@ page import="com.kysc.kyjh.plotManage.comm.DateUtil"%>
<jsp:useBean id="excel" scope="request" class="com.kysc.kyjh.planManage.action.InsertPlanInfoAction"/>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'exporting.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%
String title="信息表";
String timeName=DateUtil.getTime();
response.reset();
//response.setContentType("application/vnd.ms-excel");
//excel.export(response.getOutputStream());
if(excel.export(request,application,timeName)){
%>
<input type="hidden" name="filename" id="filename" value="${pageContext.request.contextPath}/<%=timeName%>.xls"/>
<script language="JavaScript" type="text/javascript">
document.location=document.getElementById("filename").value;
</script>
<% }
else{
%>
<script language="JavaScript" type="text/javascript">
alert("导出失败");
history.go(-1);
document.location=
</script>
<%} %>
</body>
</html>
然后是我的action文件InsertPlanInfoAction.java
/**
*
*/
package com.kysc.kyjh.planManage.action;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import org.apache.struts.upload.FormFile;
import com.kysc.kyjh.planManage.DAO.InsertPlanInfoDAO;
import com.kysc.kyjh.planManage.DAO.SelectPlanInfoDAO;
import com.kysc.kyjh.planManage.DAO.UpdatePlanInfoDAO;
import com.kysc.kyjh.planManage.form.PlanForm;
import com.kysc.kyjh.plotManage.DAO.InsertPlotInfoDAO;
import com.kysc.kyjh.plotManage.DAO.SelectPlotInfoDAO;
import com.kysc.kyjh.plotManage.comm.DateUtil;
import com.kysc.kyjh.plotManage.comm.StringUtil;
import com.kysc.kyjh.plotManage.form.DepartUserForm;
import com.kysc.kyjh.plotManage.form.PlotForm;
import java.util.*;
import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
/**
* @author Administrator
*
*/
public class InsertPlanInfoAction extends DispatchAction {
private Vector content=null;//用于存放所要查询的记录
private ResultSet rs=null;
private String [] title={"序号","项目名称","计划名称","项目类型","项目密级","开始时间","结束时间"};
private String targetFile="";
public Vector getContent(){
Vector outter=new Vector();
SelectPlanInfoDAO select =new SelectPlanInfoDAO();
SelectPlotInfoDAO selectplot=new SelectPlotInfoDAO();
List<PlanForm>plans= select.selectPlanInfo();
Iterator<PlanForm> it=plans.iterator();
while(it.hasNext()){
PlanForm pf=it.next();
Vector inner=new Vector();
String sql="select * from kyjh_plot_info where plot_id="+pf.getPlot_id();
List<PlotForm> list=selectplot.selectPlotInfoByCondition(sql);
if(list.size()!=0){
PlotFormplot=list.get(0);
pf.setItem_name(plot.getItem_name());
pf.setItem_type(plot.getItem_type());
pf.setItem_secret(plot.getItem_secret());
pf.setStart_date(plot.getStart_date());
pf.setEnd_date(plot.getEnd_date());
inner.add(plot.getItem_name());
inner.add(pf.getPlan_name());
inner.add(""+plot.getItem_type());
inner.add(""+plot.getItem_secret());
inner.add(plot.getStart_date());
inner.add(plot.getEnd_date());
outter.add(inner);
}
}
return outter;
}
public boolean export(HttpServletRequest request,ServletContext context,String timename){
targetFile+="/"+timename+".xls";
content=this.getContent();//以向量的形式存放所有的记录
String path=context.getRealPath(targetFile);
request.getSession().setAttribute("filepath",path);
try{
Vector inner=null;
String value="";//存放在cell中的文本值
int num=0;//存放在cell中的数字值
OutputStream os=new FileOutputStream(path);
WritableWorkbook workbook=Workbook.createWorkbook(os);//创建工作薄
WritableSheet worksheet=workbook.createSheet("record",0);//创建第一个工作表，name:工作表名称
Label label=null;//用于写入文本内容到工作表中去
jxl.write.Number nmb=null;//用于写入数值到工作表中去
//开始写入第一行，即标题栏
for(int i=0;i<title.length;i++){
label=new Label(i,0,title);//参数依次代表列数、行数、内容
worksheet.addCell(label);//写入单元格
}
//开始写入内容
for(int i=0;i<content.size();i++){
inner=(Vector)content.get(i);//获取一条记录
label=new Label(0,i+1,""+(i+1));
worksheet.addCell(label);
for(int j=0;j<inner.size();j++){
//一个一个字段的放入excel中去
value=(String)inner.get(j);
label=new Label(j+1,i+1,value);
worksheet.addCell(label);
}
}
workbook.write();
workbook.close();
}
catch(Exception e){
e.printStackTrace();
return false;
}
return true;
}
public void export(OutputStream os){
content=this.getContent();//以向量的形式存放所有的记录
try{
Vector inner=null;
String value="";//存放在cell中的文本值
int num=0;//存放在cell中的数字值
WritableWorkbook workbook=Workbook.createWorkbook(os);//创建工作薄
WritableSheet worksheet=workbook.createSheet("record",0);//创建第一个工作表，name:工作表名称
//WritableSheet worksheet=workbook.createSheet(name,0);//创建第一个工作表，name:工作表名称
Label label=null;//用于写入文本内容到工作表中去
jxl.write.Number nmb=null;//用于写入数值到工作表中去
//开始写入第一行，即标题栏
for(int i=0;i<title.length;i++){
label=new Label(i,0,title);//参数依次代表列数、行数、内容
worksheet.addCell(label);//写入单元格
}
//开始写入内容
for(int i=0;i<content.size();i++){
inner=(Vector)content.get(i);//获取一条记录
for(int j=0;j<inner.size();j++){
//一个一个字段的放入excel中去
if(j==inner.size()-1){//插入的数值
Integer num_=(Integer)inner.get(j);
num=num_.intValue();
nmb=new jxl.write.Number(j,i+1,num);
worksheet.addCell(nmb);
}
else{
value=(String)inner.get(j);
label=new Label(j,i+1,value);
worksheet.addCell(label);
}
}
}
workbook.write();
workbook.close();
}
catch(Exception e){
e.printStackTrace();
//return false;
}
//return true;
}
public ActionForward PlanInfoExportExcel(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
System.out.println("PlanInfoExportExcel OK");
targetFile+="/"+DateUtil.getTime()+".xls";
String path=request.getRealPath(targetFile);
content=this.getContent();
try{
Vector inner=null;
String value="";//存放在cell中的文本值
int num=0;//存放在cell中的数字值
OutputStream os=new FileOutputStream(path);
WritableWorkbook workbook=Workbook.createWorkbook(os);//创建工作薄
WritableSheet worksheet=workbook.createSheet("record",0);//创建第一个工作表，name:工作表名称
Label label=null;//用于写入文本内容到工作表中去
jxl.write.Number nmb=null;//用于写入数值到工作表中去
//开始写入第一行，即标题栏
for(int i=0;i<title.length;i++){
label=new Label(i,0,title);//参数依次代表列数、行数、内容
worksheet.addCell(label);//写入单元格
}
//开始写入内容
for(int i=0;i<content.size();i++){
inner=(Vector)content.get(i);//获取一条记录
for(int j=0;j<inner.size();j++){
//一个一个字段的放入excel中去
if(j==inner.size()-1){//插入的数值
Integer num_=(Integer)inner.get(j);
num=num_.intValue();
nmb=new jxl.write.Number(j,i+1,num);
worksheet.addCell(nmb);
}
else{
value=(String)inner.get(j);
label=new Label(j,i+1,value);
worksheet.addCell(label);
}
}
}
workbook.write();
workbook.close();
}catch(Exception e){
System.out.println(e.getMessage());
}
return null;
}
}
页:
[1]