Struts2使用jxl导出Exccel
实现效果：
（1）jsp页面关键代码
<script type="text/javascript">
function toExportExc(){
location.href = "<%=path%>/pages/toExport/exportExcel.action";
}
</script>
（2）struts.xml关键代码
<package name="export" namespace="/pages/toExport" extends="struts-default">
<action name="exportExcel" class="excelOperatorAction" method="export">
<result name="success" type="stream">
<param name="contentType">application/vnd.ms-excel,charset=ISO8859-1</param>
<!-- ${filename}是读取Action中属性的内容 -->
<param name="contentDisposition">attachment;filename=${filename}</param>
<!-- 输出时缓冲区的大小 -->
<param name="bufferSize">1024</param>
<!--
下面参数我这里写的是excelFile（名字随便，不固定），对应的Action中要有
getExcelFile方法，该方法返回的是InputStream类型
-->
<param name="inputName">excelFile</param>
</result>
</action>
</package>
（3）spring-appliactionContext.xml关键代码
<!-- 就是配了个Action的bean而已 --> <bean id="excelOperatorAction" class="com.exportexcel.action.ExcelOperatorAction"> <property name="excelOperatorservice" ref="excelOperatorService" /> </bean>
（4）ExcelOperatorAction.java
package com.exportexcel.action;
import java.io.InputStream;
import com.exportexcel.service.ExcelOperatorService;
import com.opensymphony.xwork2.ActionSupport;
public class ExcelOperatorAction extends ActionSupport {
private InputStream excelFile; //将要导出的Excel将写到这个InputStream中
private String filename; //导出的Excel文件名
private ExcelOperatorService excelOperatorservice;
// ===================================属性get/set==========================================
public String getFilename() {
return filename;
}
public void setFilename(String filename) {
this.filename = filename;
}
public void setExcelFile(InputStream excelFile) {
this.excelFile = excelFile;
}
public ExcelOperatorService getExcelOperatorservice() {
return excelOperatorservice;
}
public void setExcelOperatorservice(ExcelOperatorService excelOperatorservice) {
this.excelOperatorservice = excelOperatorservice;
}
public InputStream getExcelFile() {
return excelFile;
}
// ================================方法===========================
public String export() throws Exception {
excelFile = this.excelOperatorservice.export();//获取excel数据,并转换成输入流
filename = "test.xls";// 获取导出的excel的名字
return SUCCESS;
}
}
（5）
package com.exportexcel.service;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.List;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.Colour;
import jxl.format.VerticalAlignment;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import com.broadtext.dao.User;
import com.exportexcel.dao.ExcelOperatorDao;
public class ExcelOperatorServiceImpl implements ExcelOperatorService {
private ExcelOperatorDao dao;
public void setDao(ExcelOperatorDao dao) {
this.dao = dao;
}
/**
* 导出：合并单元格
*/
public InputStream export() throws Exception {
//定义输出流
ByteArrayOutputStream out;
out = new ByteArrayOutputStream();
//生成的excel文件将输出到输出流中
WritableWorkbook book = Workbook.createWorkbook(out);
WritableSheet sheet = book.createSheet("日程表", 0);//工作簿1
//控制工作簿列宽
sheet.setColumnView(0, 30);//第1列，列宽30
sheet.setColumnView(1, 15);//第2列，列宽15
sheet.setColumnView(2, 15);
sheet.setColumnView(3, 15);
sheet.setColumnView(4, 15);
sheet.setColumnView(5, 15);
//给工作簿添加内容
sheet.addCell(new Label(0,0,"日程表",getTitleCellFormat()));//第1列、第1行的单元格内容为“日程表”,使用getTitleCellFormat()方法的样式
sheet.addCell(new Label(0,1," ",getTitleCellFormat()));
sheet.addCell(new Label(1,1,"周一",getTitleCellFormat()));
sheet.addCell(new Label(2,1,"周二",getTitleCellFormat()));//第3列、第2行的单元格内容为“周二”
sheet.addCell(new Label(3,1,"周三",getTitleCellFormat()));
sheet.addCell(new Label(4,1,"周四",getTitleCellFormat()));
sheet.addCell(new Label(5,1,"周五",getTitleCellFormat()));
sheet.addCell(new Label(0,2,"8:00~10:00",getTitleCellFormat()));
sheet.addCell(new Label(0,3,"10:00~11:00",getTitleCellFormat()));
sheet.addCell(new Label(0,4,"11:00~12:00",getTitleCellFormat()));
sheet.addCell(new Label(1,2,"没课",getBaseCellFormat()));
sheet.addCell(new Label(2,2,"休息",getBaseCellFormat()));
sheet.addCell(new Label(3,2,"看电影",getBaseCellFormat()));
sheet.addCell(new Label(4,2,"没活动",getBaseCellFormat()));
sheet.addCell(new Label(5,2,"睡觉",getBaseCellFormat()));
sheet.addCell(new Label(2,3,"游戏",getBaseCellFormat()));
sheet.addCell(new Label(4,3,"上课",getBaseCellFormat()));
sheet.addCell(new Label(1,4,"吃饭",getBaseCellFormat()));
sheet.mergeCells(0, 0, 5, 0);//第1列第一个单元格至第5列第1个单元格合并
sheet.mergeCells(1, 2, 1, 3);//第2列第3个单元格至第2列第4个单元格合并
sheet.mergeCells(3, 2, 3, 3);//第2列第3个单元格至第2列第4个单元格合并
sheet.mergeCells(4, 3, 5, 3);//第2列第3个单元格至第2列第4个单元格合并
sheet.mergeCells(1, 4, 5, 4);//第2列第3个单元格至第2列第4个单元格合并
book.write();book.close();book = null;
//将输出流转换成二进制数组，借这个数组将Excel写入输入流中（写入内存）
return new ByteArrayInputStream(out.toByteArray());
}
/**
* 设置基本单元格样式
*/
private WritableCellFormat getBaseCellFormat() throws WriteException {
WritableCellFormat format = new WritableCellFormat();
format.setBorder(Border.ALL, BorderLineStyle.THIN);//单元边框
format.setAlignment(Alignment.CENTRE);//单元内容水平对齐
format.setVerticalAlignment(VerticalAlignment.CENTRE);//单元内容垂直对齐
format.setBackground(Colour.ICE_BLUE);
WritableFont titleFont = new WritableFont(WritableFont.createFont("宋体"), 12);//字体为宋体，大小是12磅(小四)
format.setFont(titleFont);
return format;
}
/**
* 设置标题单元格样式
*/
private WritableCellFormat getTitleCellFormat() throws WriteException{
WritableCellFormat format = new WritableCellFormat();
format.setBorder(Border.ALL, BorderLineStyle.THIN);//单元边框
format.setAlignment(Alignment.CENTRE);//单元内容水平对齐
format.setVerticalAlignment(VerticalAlignment.CENTRE);//单元内容垂直对齐
format.setBackground(Colour.GRAY_25);
WritableFont titleFont = new WritableFont(WritableFont.createFont("宋体"), 14, WritableFont.BOLD);//字体为宋体，大小是四号,加粗
format.setFont(titleFont);
return format;
}
}