最近做了一个功能,通过jsp页面点击导出按钮将查询出来的数据导出到Excel中。
由于以前也做过类似的导出功能,但是每次做都看看以前的代码,或者再上网查所以开发的效率非常低,所以今天花一点时间将这个导出功能整理出来。
这个导出主要使用jxl插件来实现。不多说了,直接上代码:
一、列表页面的部分代码
<input type="button" class="cxBut2" value="导出数据" οnclick="_export()"/>
function _export(){
document.location.href="download.jsp?czId=<%=czId%>&czNum=<%=czNum%>&beginIssue=<%=beginIssue%>&endIssue=<%=endIssue%>&pageNum=<%=pageNum%>&czName=" target="_blank" rel="external nofollow" +$("#czId").find("option:selected").text();
}
二、download.jsp
<%@ page contentType="application/vnd.ms-excel" language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@page import="com.zhcw.kaijiang.service.ExportExcal"%>
<%@page import="java.io.OutputStream"%>
<%
String czNum = request.getParameter("czNum");
String czId = request.getParameter("czId");
String czName = request.getParameter("czName");
String beginIssue = request.getParameter("beginIssue");
String endIssue = request.getParameter("endIssue");
String pageNum = request.getParameter("pageNum");
response.resetBuffer();
response.setHeader("Content-Disposition", "attachment;filename="+ new String(czName.getBytes("UTF-8"), "iso8859-1")+".xls");//指定下载的文件名
response.setContentType("application/vnd.ms-excel");
try{
ExportExcal exportExcal = new ExportExcal(beginIssue, czId, czName, czNum, endIssue, pageNum);
exportExcal.export(response.getOutputStream());
}catch(Exception ex){
ex.printStackTrace();
}
%>
这个页面主要负责接收上一个页面传来的数据,然后调用后台相应的导出方法来实现导出功能。
注意:这两行代码必须要写:
response.resetBuffer();<pre name="code" class="html">response.setContentType("application/vnd.ms-excel");
三、后台处理类
package com.zhcw.kaijiang.service;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.text.DecimalFormat;
import java.util.List;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import com.common.PropertiesOperator;
import com.crawler.entity.KaiJiangInfo;
import com.zhcw.kaijiang.util.StringUtil;
/**
* 将查询出来的信息导出到excel中
*
* @author zhcw
*
*/
public class ExportExcal {
private String czNum = "";
private String czId = "";
private String czName = "";
private String beginIssue = "";
private String endIssue = "";
private String pageNum = "";
public ExportExcal(String beginIssue, String czId, String czName, String czNum, String endIssue, String pageNum) {
super();
this.beginIssue = (beginIssue == null ? "" : beginIssue);
this.endIssue = (endIssue == null ? "" : endIssue);
this.czId = (czId == null ? "" : czId);
this.czName = (czName == null ? "" : czName);
this.czNum = (czNum == null || czNum.trim().equals("") || czNum.trim().equals("null")) ? "30" : czNum;
this.pageNum = (pageNum == null || pageNum.trim().equals("") || pageNum.trim().equals("null")) ? "1" : pageNum;
}
public List<KaiJiangInfo> kaiJiangInfoList() {
KaijiangInfoService kaijiangInfoService = new KaijiangInfoService();
if (this.beginIssue!=null && this.beginIssue.trim().length() > 0) {
return kaijiangInfoService.getSplitPageByCzIdNew(Long.valueOf(this.czId), Integer.valueOf(pageNum), 400, this.beginIssue, this.endIssue);
} else {
return kaijiangInfoService.getSplitPageByCzIdNew(Long.valueOf(this.czId), Integer.valueOf(pageNum), Integer.parseInt(czNum));
}
}
public void export(OutputStream output) throws Exception {
PropertiesOperator propertiesOperator = new PropertiesOperator();
String cz_id_css_1 = propertiesOperator.getMessage("cz_id_css_1") == null ? "" : propertiesOperator.getMessage("cz_id_css_1").trim();
String cz_id_css_2 = propertiesOperator.getMessage("cz_id_css_2") == null ? "" : propertiesOperator.getMessage("cz_id_css_2").trim();
String cz_id_css_3 = propertiesOperator.getMessage("cz_id_css_3") == null ? "" : propertiesOperator.getMessage("cz_id_css_3").trim();
String cz_id_css_4 = propertiesOperator.getMessage("cz_id_css_4") == null ? "" : propertiesOperator.getMessage("cz_id_css_4").trim();
String cz_id_css_5 = propertiesOperator.getMessage("cz_id_css_5") == null ? "" : propertiesOperator.getMessage("cz_id_css_5").trim();
if (StringUtil.contains(this.czId, cz_id_css_1)) {
this.exportSSQExcel(output);
} else if (StringUtil.contains(this.czId, cz_id_css_2)) {
this.export3DExcel(output);
}
}
private void exportExcel(String type,OutputStream output) throws Exception {
WritableWorkbook workbook = Workbook.createWorkbook(output);// 创建工作薄
WritableSheet sheet = workbook.createSheet(this.czName, 0);// 创建第一个工作表,name:工作表名称
//设置列宽度
sheet.setColumnView(0,7);
sheet.setColumnView(1,15);
sheet.setColumnView(2,13);
sheet.setColumnView(3,25);
sheet.setColumnView(4,15);
sheet.setColumnView(6,15);
sheet.setColumnView(8,15);
sheet.setColumnView(10,15);
sheet.setColumnView(11,15);
WritableCellFormat format = new WritableCellFormat();
format.setAlignment(Alignment.CENTRE);
format.setBorder(Border.ALL, BorderLineStyle.THIN);
int row = 0;
//合并标题行
sheet.mergeCells(0, row, 11, row);
// 合并
sheet.mergeCells(0, row + 1, 0, row + 2);
sheet.mergeCells(1, row + 1, 1, row + 2);
sheet.mergeCells(2, row + 1, 2, row + 2);
sheet.mergeCells(3, row + 1, 3, row + 2);
sheet.mergeCells(4, row + 1, 4, row + 2);
sheet.mergeCells(11, row + 1, 11, row + 2);
sheet.mergeCells(5, row + 1, 6, row + 1);
sheet.mergeCells(7, row + 1, 8, row + 1);
sheet.mergeCells(9, row + 1, 10, row + 1);
Label label = null;// 用于写入文本内容到工作表中去
// 开始写入第一行,即标题栏
if(this.beginIssue.length()>0){
label = new Label(0, row, czName+"从"+this.beginIssue+" 到 "+this.endIssue+"期的中奖信息",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
}else{
label = new Label(0, row, czName+"的前 "+this.czNum+" 期的中奖信息",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
}
//第二行写表头
label = new Label(0, row + 1, "序号",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(1, row + 1, "开奖日期",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(2, row + 1, "期号",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(3, row + 1, "中奖号码",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(4, row + 1, "销售额(元)",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
if(type!=null && type.trim().equals("ssq")){
label = new Label(5, row + 1, "一等奖",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(7, row + 1, "二等奖",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(9, row + 1, "三等奖",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
}else if(type!=null && type.trim().equals("3d")){
label = new Label(5, row + 1, "直选",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(7, row + 1, "组三",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(9, row + 1, "组六",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
}
//只有双色球有奖池金额
if(type!=null && type.trim().equals("ssq")){
label = new Label(11, row + 1, "奖池(元)",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
}
label = new Label(5, row + 2, "注数",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(6, row + 2, "奖金",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(7, row + 2, "注数",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(8, row + 2, "奖金",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(9, row + 2, "注数",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(10, row + 2, "奖金",format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
List<KaiJiangInfo> list = this.kaiJiangInfoList();
int index = 1;
int num = 2;
DecimalFormat df = new DecimalFormat("#0.00");
for (KaiJiangInfo kaiJiangInfo : list) {
num = num + 1;
label = new Label(0, num, String.valueOf((Integer.parseInt(pageNum) - 1) * 400 + (index++)),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(1, num, kaiJiangInfo.getKjDate(),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(2, num, kaiJiangInfo.getIssue(),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
if(type!=null && type.trim().equals("ssq")){
label = new Label(3, num, kaiJiangInfo.getKjZNum() + " " + kaiJiangInfo.getKjTNum(),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
}else if(type!=null && type.trim().equals("3d")){
label = new Label(3, num, kaiJiangInfo.getKjZNum(),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
}
label = new Label(4, num, df.format(kaiJiangInfo.getSales()),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(5, num, String.valueOf(kaiJiangInfo.getNoteOne()),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(6, num, df.format(kaiJiangInfo.getBonusOne()),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(7, num, String.valueOf(kaiJiangInfo.getNoteTwo()),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(8, num, df.format(kaiJiangInfo.getBonusTwo()),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(9, num, String.valueOf(kaiJiangInfo.getNoteThree()),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
label = new Label(10, num, df.format(kaiJiangInfo.getBonusThree()),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
//只有双色球有奖池金额
if(type!=null && type.trim().equals("ssq")){
label = new Label(11, num, df.format(kaiJiangInfo.getBonusPool()),format);// 参数依次代表列数、行数、内容
sheet.addCell(label);// 写入单元格
}
}
workbook.write();
workbook.close();
}
private void exportSSQExcel(OutputStream output) throws Exception {
this.exportExcel("ssq", output);
}
private void export3DExcel(OutputStream output) throws Exception {
this.exportExcel("3d", output);
}
}
更多文章见: http://www.16boke.com