sping 、jxl 生成excel文件下载

sping 、jxl 生成excel文件下载

ExcelBean.java文件用于生成Excel

package  com.zhupan.util;

import  java.io.OutputStream;
import  java.util.List;

import  jxl.Workbook;
import  jxl.format.Colour;
import  jxl.format.UnderlineStyle;
import  jxl.write.Label;
import  jxl.write.WritableCellFormat;
import  jxl.write.WritableFont;
import  jxl.write.WritableSheet;
import  jxl.write.WritableWorkbook;

import  com.ctgusec.model.Course_info;
import  com.ctgusec.model.Student_info;

public   class  ExcelBean  {

    public String expordExcel(OutputStream os, List courseList,List studentList)
            throws Exception {

        WritableWorkbook wbook = Workbook.createWorkbook(os); // 建立excel文件
        String tmptitle = "课程“"+((Course_info)courseList.get(0)).getCource_name()+"”的选课学生列表"; // 标题
        WritableSheet wsheet = wbook.createSheet("第一页", 0); // sheet名称
        // 设置excel标题
        WritableFont wfont = new WritableFont(WritableFont.ARIAL, 16,
                WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,
                Colour.BLACK);
        WritableCellFormat wcfFC = new WritableCellFormat(wfont);
        wsheet.addCell(new Label(1, 0, tmptitle, wcfFC));
        wfont = new jxl.write.WritableFont(WritableFont.ARIAL, 14,
                WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,
                Colour.BLACK);
        wcfFC = new WritableCellFormat(wfont);
        // 开始生成主体内容                
        wsheet.addCell(new Label(0, 2, "课程名称"));
        wsheet.addCell(new Label(1, 2, "学 号"));
        wsheet.addCell(new Label(2, 2, "姓 名"));
        wsheet.addCell(new Label(3, 2, "性 别"));
        wsheet.addCell(new Label(4, 2, "学 院"));
        wsheet.addCell(new Label(5, 2, "班 级"));
        wsheet.addCell(new Label(6, 2, "专 业"));
        wsheet.addCell(new Label(7, 2, "备 注"));
        for(int i=3;i<studentList.size()+3;i++)
        {
            wsheet.addCell(new Label(0, i, ((Course_info)courseList.get(0)).getCource_name()));
            wsheet.addCell(new Label(1, i, ((Student_info)studentList.get(0)).getStudentID()));
            wsheet.addCell(new Label(2, i, ((Student_info)studentList.get(0)).getName()));
            wsheet.addCell(new Label(3, i, ((Student_info)studentList.get(0)).getSex()));
            wsheet.addCell(new Label(4, i, ((Student_info)studentList.get(0)).getUnit()));
            wsheet.addCell(new Label(5, i, ((Student_info)studentList.get(0)).getClass_()));
            wsheet.addCell(new Label(6, i, ((Student_info)studentList.get(0)).getSpecialty()));
            wsheet.addCell(new Label(7, i, ((Student_info)studentList.get(0)).getRemark()));
        }        
        // 主体内容生成结束        
        wbook.write(); // 写入文件
        wbook.close();
        os.close();
        return "success";
    }
}

控制器：

package  com.ctgusec.spring;

import  java.io.OutputStream;
import  java.util.List;

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

import  org.springframework.web.servlet.ModelAndView;
import  org.springframework.web.servlet.mvc.AbstractController;

import  com.ctgusec.service.ICourse_infoManage;
import  com.zhupan.util.ExcelBean;

public   class  EExcelDownController  extends  AbstractController  {
    
    private ICourse_infoManage courseManage;

    public void setCourseManage(ICourse_infoManage courseManage) {
        this.courseManage = courseManage;
    }

    @Override
    protected ModelAndView handleRequestInternal(HttpServletRequest request,
            HttpServletResponse response) throws Exception {    
        Integer course_id=new Integer(request.getParameter("course_id"));
        List courseList=this.courseManage.getCourseById(course_id);        
        List studentList = this.courseManage.getStudentByCourseId(course_id);
         try {    
            OutputStream os = response.getOutputStream();// 取得输出流
            response.reset();// 清空输出流
            response.setHeader("Content-disposition", "attachment; filename=student.xls");// 设定输出文件头
            response.setContentType("application/msexcel");// 定义输出类型
            ExcelBean excelBean = new ExcelBean();
            excelBean.expordExcel(os,courseList,studentList);// 调用生成excel文件bean
        } catch (Exception e) {
            System.out.println(e);
        }            
        return null;    
    }
}