jsp 中poi 实现导入导出excel

本例试用poi 3.0,jdk1.4,weblogic8.13,sqlserver2000

1.excel导入数据

导入时候注意数字类型和字符类型的区别，数字类型要在excel中设置数字类型，对应数据库中也应该建立对应类型

<%@ page import="com.guanri.database.*,java.util.*,com.guanri.util.*,com.jspsmart.upload.*" contentType="text/html; charset=GBK" %>
<%@ page import="java.util.*,java.io.*,org.apache.poi.poifs.filesystem.*,org.apache.poi.hssf.usermodel.*" %>
<jsp:include page="/admin/checkLogin.jsp"/>
<%

 

String result = "";
String contracId = "";
String projectname = "";
double projectscale = 0;
String projecttype="";
String projectconunit="";
double designtime = 0;
String designphase = "";
double completedtime = 0;
String participants = "";
String positionofpro = "";
String dutiesas = "";

int inum = 0;
int unum = 0;
int rnum = 0;
int snum = 0;
String rmstr = "";

Table tb = new Table();
Vector vc = null;
Hashtable rows = new Hashtable();
String sql = "";

if(request.getMethod().equalsIgnoreCase("POST")) {
 String sdir = "/download/xlsdir/";  //文件保存目录
 String  filesep=System.getProperty("file.separator");
 String ssdir = filesep+"download"+filesep+"xlsdir"+filesep;
 Calendar c = Calendar.getInstance(); 
 String fname = c.getTimeInMillis()+".xls";
 String sfname = sdir + fname;
 String ss = "xls"; //支持的文件后缀名
 try{
  SmartUpload su = new SmartUpload();
  su.initialize(pageContext);
  su.setAllowedFilesList(ss);
  su.upload();
  com.jspsmart.upload.File file = su.getFiles().getFile(0);
  if(!file.isMissing()){  
   file.saveAs(sfname);
 //  System.out.println(application.getRealPath("/")+ssdir+fname );
    FileInputStream finput = new FileInputStream(application.getRealPath("/")+ssdir+fname );
    //设定FileINputStream读取Excel档
    POIFSFileSystem fs = new POIFSFileSystem( finput );
    HSSFWorkbook wb = new HSSFWorkbook(fs);
    HSSFSheet sheet = wb.getSheetAt(0);
    //读取第一个工作表，宣告其为sheet
    finput.close();
    HSSFRow row=null;
    //宣告一列
    HSSFCell cell=null;
    //宣告一个储存格
    short i=0;
    short y=0;
 
    //以巢状迴圈读取所有储存格资料
    System.out.println("sheet.getLastRowNum()="+sheet.getLastRowNum());
    for (i=1;i<=sheet.getLastRowNum();i++)
    {
      row=sheet.getRow(i);
      for (y=1;y<=row.getLastCellNum();y++)
      {
         cell=row.getCell(y);
         switch(y){
           case 1:   //合同号
            if(cell!=null){
             contracId=(cell.getStringCellValue()).trim();
            }
            break;
           case 2:   //项目名称          
            if(cell!=null){
             projectname=(cell.getStringCellValue()).trim();
            }
            break;
           case 3:   //项目规模           
            if(cell!=null){

             projectscale=cell.getNumericCellValue();
            }
            break;
           case 4:   //项目类型         
            if(cell!=null){
             projecttype=(cell.getStringCellValue()).trim();
            }
            break;
           case 5:   //项目建设单位        
            if(cell!=null){
             projectconunit=(cell.getStringCellValue()).trim();
            }
            break;
           case 6:   //设计时间       
            if(cell!=null){
             designtime=cell.getNumericCellValue();
            }
            break;
           case 7:   //设计阶段       
            if(cell!=null){
             designphase=(cell.getStringCellValue()).trim();
            }
            break;
           case 8:   //竣工时间     
            if(cell!=null){
             completedtime=cell.getNumericCellValue();
            }
            break;
           case 9:   //参与人姓名        
            if(cell!=null){
             participants=(cell.getStringCellValue()).trim();
            }
            break;
           case 10:   //担任项目职务           
            if(cell!=null){
             positionofpro=(cell.getStringCellValue()).trim();
            }
            break;
           case 11:   //担任职责         
            if(cell!=null){
             dutiesas=(cell.getStringCellValue()).trim();
            }
            break;
           
         }
      }
 
    sql = "insert into hy_pro_briefinfo (contracId,projectname,projectscale,projecttype,projectconunit,designtime,designphase,completedtime,participants,positionofpro,dutiesas) ";
    sql+="values ('"+contracId+"','"+projectname+"','"+projectscale+"','"+projecttype+"','"+projectconunit+"','"+(int)designtime+"','"+designphase+"','"+(int)completedtime+"','"+participants+"','"+positionofpro+"','"+dutiesas+"')";    
    //System.out.println(sql);
    snum = tb.update(sql);
    if(snum<=0){
     ++rnum;
     rmstr = rmstr + ",";
    }else{
     ++inum;
    }
   
    tb.commit();
    tb.setCommit(true);  
    // System.out.println("result="+result); 
    //System.out.println("snum="+snum +"inum="+inum);   
    }
   
    result = "共成功上传 "+(inum+unum)+" 条记录，其中新增 "+inum+" 条,更新 "+unum+" 条；失败 "+rnum+" 条（ "+rmstr+" ）";
   // System.out.println(result);
    java.io.File f = new java.io.File(application.getRealPath("/")+ssdir+fname);
    f.delete();
  }else{
   result = "上传文件失败";
  }
 }catch(Exception ex){
  ex.printStackTrace();
   java.io.File f = new java.io.File(application.getRealPath("/")+ssdir+fname);
   //f.delete();
 // result = ex.getMessage(); 
  if(result.indexOf("1010")>0){
   result = "文件格式不对！只支持"+ss+"格式文件";
  }
  if("You cannot get a numeric value from a String based cell".equals(result)){
   result = "格式错误：在数字单元格中存在非数字！第"+(unum+inum+1)+"条记录出错";
  } 
 }
 //finally{

   
   //  response.sendRedirect("pro_per_info.jsp");
   
   //  }
     }
%>

        <jsp:include page="/admin/BodyStart" />
   Ext.MessageBox.alert("提示",'<%=result %>');
   setTimeout("window.location.href='pro_per_info.jsp'", 1000);
   <jsp:include page="/admin/BodyEnd" />

 

 

 

 

2.excel导出数据

导出的时候注意中文编码的问题

 response.reset();
 response.setContentType("application/vnd.ms-excel");
必须按照先后顺序书写

<%@ page language="java" import="com.guanri.database.*,java.util.*,com.guanri.util.*,com.jspsmart.upload.*" contentType="text/html; charset=gb2312" pageEncoding="gb2312"%>
<%@ page import="java.util.*,java.io.*,org.apache.poi.hssf.usermodel.*" %>
<%
 //response.setContentType("application/msexcel;charset=utf-8" );
 //response.setContentType("text/html;charset=utf-8");
 response.reset();
 response.setContentType("application/vnd.ms-excel");
 request.setCharacterEncoding("gb2312");
 String workSheetName = "pro_info.xls";
 response.setHeader("Content-disposition", "attachment; filename="+workSheetName);
 

 //WriteExcel  we=new WriteExcel();
 //System.out.println("文件生成");
 //we.getExcel("steet1",response.getOutputStream());
 
 HSSFWorkbook workbook = new HSSFWorkbook(); //产生工作簿对象
 HSSFSheet sheet = workbook.createSheet(); //产生工作表对象
 
 sheet.setDefaultRowHeight((short) 10);
 sheet.setDefaultColumnWidth((short) 20);
 sheet.setColumnWidth((short)   4,   (short)   10000);//   单位
 workbook.setSheetName(0,"firstSheet");
 
     // 设置字体
      HSSFFont font = workbook.createFont();
    //  font.setFontHeightInPoints(( short ) 20 ); // 字体高度
     // font.setColor(HSSFFont.COLOR_RED); // 字体颜色
      font.setFontName( " 黑体 " ); // 字体
      font.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL); // 宽度
    //   font.setItalic( true ); // 是否使用斜体
 //  font.setStrikeout(true); // 是否使用划线

      // 设置单元格类型
      HSSFCellStyle cellStyle = workbook.createCellStyle();
      cellStyle.setFont(font);
      cellStyle.setAlignment(HSSFCellStyle.ALIGN_LEFT); // 水平布局：居左边
      cellStyle.setWrapText( true );
   
 

 

 
 HSSFRow row = sheet.createRow((short)0);//产生第一行
 HSSFCell cell = row.createCell((short) 0);//产生第一个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("本公司项目统计信息");
 
 row = sheet.createRow((short) 1);//产生第二行
 cell = row.createCell((short) 0);//产生第一个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("序号");
 cell = row.createCell((short) 1);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("姓名");
 cell = row.createCell((short) 2);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("项目名称");
 cell = row.createCell((short) 3);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("项目类型"); 
 cell = row.createCell((short) 4);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("项目规模"); 
 cell = row.createCell((short) 5);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("担任项目职务");  
 cell = row.createCell((short) 6);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("设计时间");  
 cell = row.createCell((short) 7);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("设计阶段");   
 cell = row.createCell((short) 8);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("项目建设单位");  
 cell = row.createCell((short) 9);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("竣工时间"); 
 cell = row.createCell((short) 10);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("专项设计"); 
 cell = row.createCell((short) 11);//产生第二个单元格
 cell.setCellType(HSSFCell.CELL_TYPE_STRING);
 cell.setEncoding(HSSFCell.ENCODING_UTF_16);
 cell.setCellValue("直属专业领导");  
 
 
 Table tb = new Table();
 Vector vc = null;
 Hashtable rows=new Hashtable();
 String sql = "";
 sql = "select * from hy_pro_briefinfo  where 1=1";
 sql = sql + "  order by participants";
 vc = tb.getContent(sql);
// System.out.println(sql);
// String result = "";
 int order=0;
 String contracId = "";
 String projectname = "";
 String projectscale = "";
 String projecttype="";
 String projectconunit="";
 double designtime = 0;
 String designphase = "";
 double completedtime = 0;
 String participants = "";
 String positionofpro = "";
 String dutiesas = "";
 String leader="";
 
 int iRow=2;
 String info="";
 String pername="";
 int num=1;
 for(int i=0;i<vc.size();i++){
  rows = (Hashtable)vc.get(i);
  order=i+1;
  participants=(String)rows.get("participants");
  if(!pername.equals(participants)){
   pername=participants;
   num=1;
  }else{
   num++;
  }
 // System.out.println("participants="+participants);
  projectname=(String)rows.get("projectname");
  projecttype=(String)rows.get("projecttype");
 // System.out.println("projectname="+projectname);
  positionofpro=(String)rows.get("positionofpro");
 // System.out.println("positionofpro="+positionofpro);
  designtime=((Integer)rows.get("designtime")).intValue();
  
  projectscale=(Double)rows.get("projectscale")+"";
 // System.out.println("designtime="+designtime);
  designphase=(String)rows.get("designphase");
 // System.out.println("designphase="+designphase);
  projectconunit=(String)rows.get("projectconunit");
 // System.out.println("projectconunit="+projectconunit);
  completedtime=((Integer)rows.get("completedtime")).intValue();
 // System.out.println("completedtime="+completedtime);
  dutiesas=(String)rows.get("dutiesas");
 // System.out.println("dutiesas="+dutiesas);
  row= sheet.createRow((short)iRow);;
  
  for(int j=1;j<=11;j++)
  {
   cell = row.createCell((short)(j-1));
   cell.setCellStyle(cellStyle); // 设置单元格样式
   cell.setCellType(HSSFCell.CELL_TYPE_STRING);
   cell.setEncoding(HSSFCell.ENCODING_UTF_16);
    switch(j-1){
       case 0:   //编号
        info=num+"";
       break;
       case 1:   //姓名
        info=participants+"";
       break;
       case 2:   //项目名称
       info=projectname+"";   
       break;
       case 3:  //项目类型 
       info=projecttype+"";  
       break;
       case 4:   //面积
       info="建筑面积："+projectscale+"平方米";
       break;
       case 5:    //担任项目职务 
       info=positionofpro+"";
       break;
       case 6:  //设计时间 
       info=designtime+"";
        info=info.substring(0,info.indexOf("."));
       break;
       case 7:  //设计阶段 
       info=designphase+""; 
       break;
       case 8:  //施工单位
       info=projectconunit+"";  
       break;
       case 9:   //竣工时间 
        info=completedtime+"";
        info=info.substring(0,info.indexOf("."));
        if("0".equals(info)){
         info="";
        }
       break;
       case 10:  //专项设计
       info=dutiesas+"";
       break;  //直属专业领导
       case 11:
       info=leader+"";
       break;
   }
   //System.out.println("info="+info);
   cell.setCellValue(info);
  }
  iRow++;
  
 }
 
 OutputStream   output=response.getOutputStream();
    output.flush();
       workbook.write(response.getOutputStream());
         output.close();
 
 %>