用jxl Workbook 创建，修改Excel表格

package com.caitong.activity.action;

import java.io.IOException;
import java.io.OutputStream;
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.ResultSet;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import jxl.Workbook;
import jxl.format.Colour;
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 jxl.write.biff.RowsExceededException;

import org.apache.struts2.ServletActionContext;

import com.caitong.activity.util.DBUtil;
import com.opensymphony.xwork2.Action;

public class ExportExcelAction implements Action{
/*
* 生成excel文件
*/
public void createExcel() {
try{
HttpServletRequest req = ServletActionContext.getRequest();
HttpServletResponse response = ServletActionContext.getResponse();
req.setCharacterEncoding(“UTF-8”);
String title1 = req.getParameter(“fileName”);
//解决乱码
String downLoadName = new String(title1.getBytes(“gbk”), “iso8859-1”);
response.setContentType(“octets/stream”);
response.addHeader(“Content-Type”, “text/html; charset=utf-8”);
response.setHeader(“Content-Disposition”, “attachment;filename=” + downLoadName+”.xls”);
//创建输出流
OutputStream os = response.getOutputStream();
//创建工作簿
WritableWorkbook workbook = Workbook.createWorkbook(os);
//创建新的一页（说白了就是第一个表）
WritableSheet sheet = workbook.createSheet(“Sheet0”, 0);
//构造表头
//添加合并单元格，第一个参数是起始列，第二个参数是起始行，第三个参数是终止列，第四个参数是终止行
sheet.mergeCells(0, 0, 7, 0);
//设置字体的种类和黑体显示，字体为Arial字号的大小为10，采用黑体显示
WritableFont bold = new WritableFont(WritableFont.ARIAL, 12, WritableFont.BOLD);
//生成一个单元格样式控制对象
WritableCellFormat titleFormate = new WritableCellFormat(bold);
//单元格中的内容水平方向居中
titleFormate.setAlignment(jxl.format.Alignment.CENTRE);
//单元格中的内容垂直方向居中
titleFormate.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
Label title = new Label(0, 0, title1, titleFormate);
//表头的内容填到设置的单元格中
sheet.addCell(title);
//设第一行的行高
sheet.setRowView(0, 600, false);
//设置单元格每一列的宽度
for (int i = 0; i <= 7; i++) {
sheet.setColumnView(i, 20);
}
//创建需要显示的具体内容
WritableFont color = new WritableFont(WritableFont.ARIAL);//选择字体
color.setColour(Colour.BLACK);//设置字体为BLACK颜色
WritableCellFormat colorFormat = new WritableCellFormat(color);
//终于开始写表头列
Label agentId = new Label(0,1,”站点编号”,colorFormat);
sheet.addCell(agentId);
Label phone = new Label(1,1,”手机号”,colorFormat);
sheet.addCell(phone);
Label userId = new Label(2,1,”身份证号”,colorFormat);
sheet.addCell(userId);
Label description = new Label(3,1,”奖金说明”,colorFormat);
sheet.addCell(description);
Label bonusDetial = new Label(4,1,”奖金金额”,colorFormat);
sheet.addCell(bonusDetial);
Label addTimestamp = new Label(5,1,”参与时间”,colorFormat);
sheet.addCell(addTimestamp);
Label prizeFlag = new Label(6,1,”兑奖状态”,colorFormat);
sheet.addCell(prizeFlag);
Label prizeTimestamp = new Label(7,1,”兑奖时间”,colorFormat);
sheet.addCell(prizeTimestamp);

        //调用存储过程            //使用action上下文获取请求            HttpServletRequest request = ServletActionContext.getRequest();            //获取前台的的输入参数            String luckyDrawId = request.getParameter("luckyDrawId");            //获取数据库的链接            Connection conn = DBUtil.getConnection();            CallableStatement call = null;            ResultSet rs = null;            try {                call  = conn.prepareCall("{call PK_REPORT.Qr_Excel_Data(?,?)}");                call.setObject(1, luckyDrawId);                call.registerOutParameter(2, oracle.jdbc.OracleTypes.CURSOR);                call.execute();                rs = (ResultSet) call.getObject(2);                //设置价格（金额）的格式                java.text.DecimalFormat df = new java.text.DecimalFormat("##0.00");                //游标循环                int Row = 2;                int a = 0;                double b = 0.0;                double c = 0.0;                while(rs.next()){                    Label agentId1 = new Label(0,Row,rs.getString("Agent_ID"),colorFormat);                    sheet.addCell(agentId1);                    Label phone1 = new Label(1,Row,rs.getString("Phone"),colorFormat);                    sheet.addCell(phone1);                    Label personalId = new Label(2,Row,rs.getString("Personal_ID"),colorFormat);                    sheet.addCell(personalId);                    Label description1 = new Label(3,Row,rs.getString("Description"),colorFormat);                    sheet.addCell(description1);                    Label bonusValue = new Label(4,Row,rs.getString("Bonus_Value")== null?"0":String.valueOf(df.format(Float.valueOf(rs.getString("Bonus_Value"))/100)),colorFormat);                    sheet.addCell(bonusValue);                    Label joinTimestamp = new Label(5,Row,rs.getString("Join_Timestamp"),colorFormat);                    sheet.addCell(joinTimestamp);                    Label prizeFlag1 = new Label(6,Row,rs.getString("Prize_Desc"),colorFormat);                    sheet.addCell(prizeFlag1);                    Label prizeTimestamp1 = new Label(7,Row,rs.getString("Prize_Timestamp"),colorFormat);                    sheet.addCell(prizeTimestamp1);                    Row = Row + 1;                    a=a+1;                    String flag = rs.getString("Prize_Flag");                    b = b+ Double.parseDouble(rs.getString("Bonus_Value")== null?"0":String.valueOf(df.format(Float.valueOf(rs.getString("Bonus_Value"))/100)));                    if("1".equals(flag))                    {                        c = c+ Double.parseDouble(rs.getString("Bonus_Value")== null?"0":String.valueOf(df.format(Float.valueOf(rs.getString("Bonus_Value"))/100)));                    }                }                Label Summary = new Label(0,Row, "合计：共" + String.valueOf(a)  + "笔，其中应兑" + String.valueOf(b) + "元，实兑" + String.valueOf(c) + "元",colorFormat);                sheet.addCell(Summary);            }catch (Exception e) {                e.printStackTrace();            }        //把创建的内容写入到输出流中，并关闭输出流        workbook.write();        workbook.close();        os.flush();        os.close();    }catch(Exception e){        e.printStackTrace();    }}@Overridepublic String execute() throws Exception {    // TODO Auto-generated method stub    return null;}

}