使用POI操作EXCEL工作簿（三）

POIExcelServlet     处理Excel文件

java 代码

package it;

import java.io.*;
import java.text.DecimalFormat;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.poi.hssf.usermodel.*;
import java.util.Enumeration;

public class POIExcelServlet extends HttpServlet {
 private String poiexcelPath = "";

 public void destroy() {
  super.destroy(); // Just puts "destroy" string in log
  // Put your code here
 }

 public void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  createExcel(this.poiexcelPath,request);
  readExcel(this.poiexcelPath,response);
 }


 public void doPost(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {
  doGet(request,response);
 }


 public void init(ServletConfig config) throws ServletException {
  super.init(config);

  poiexcelPath = "e:\\jsp\\telx.xls";  //给定保存路径
 }

 public void createExcel(String filename,HttpServletRequest request){
  String outputFile = filename;
  int i = 1;
  String name;
  String value;

  try{
   HSSFWorkbook workbook = new HSSFWorkbook();    //建立EXCEL关联文件

   HSSFSheet sheet = workbook.createSheet("New Sheet");    //新建SHEET对象
   HSSFRow row = sheet.createRow((short)0);     //新建ROW对象

   HSSFCell cell = row.createCell((short)0);    //新建CELL对象
   cell.setCellType(HSSFCell.CELL_TYPE_STRING); //设置CELL属性（字符）
   cell.setCellValue("Parameter Name");         //给定值

   cell = row.createCell((short)1);
   cell.setCellType(HSSFCell.CELL_TYPE_STRING);
   cell.setCellValue("Parameter Value");

   Enumeration enum1 = request.getParameterNames();

   System.out.println(enum1.toString());
   while(enum1.hasMoreElements()){
    row = sheet.createRow((short)i);
    name = (String)enum1.nextElement();
    value = request.getParameter(name);

    cell = row.createCell((short)0);
    cell.setCellType(HSSFCell.CELL_TYPE_STRING);
    cell.setCellValue(name);

    cell= row.createCell((short)1);
    cell.setCellType(HSSFCell.CELL_TYPE_STRING);
    cell.setCellValue(value);
    i++;
   }

   FileOutputStream fos = new FileOutputStream(outputFile);

   workbook.write(fos);    //通过流生成EXCEL文件
   fos.flush();
   fos.close();
   System.out.println("文件生成…");
  }catch(Exception e){
   System.out.println("error at createExcel"+e);
  }

 }


 public void readExcel(String filename,HttpServletResponse response) throws IOException{
  DecimalFormat df = new DecimalFormat("#");    //建立格式化数字对象（#）单个任何数字
  String fileToBeRead = filename;
  PrintWriter out = response.getWriter();

  try{
   String strCell = null;
   HSSFWorkbook workbook = new HSSFWorkbook(new FileInputStream(fileToBeRead));
   //给定构造函数为读入
   for(int numSheets = 0;numSheets
    if(null!=workbook.getSheetAt(numSheets)){
     HSSFSheet aSheet = workbook.getSheetAt(numSheets);
     for(int rowNumOfSheet = 0;rowNumOfSheet<=aSheet.getLastRowNum();rowNumOfSheet++){
      if(null!=aSheet.getRow(rowNumOfSheet)){
       HSSFRow aRow =aSheet.getRow(rowNumOfSheet);
       for(short cellNumOfRow = 0;cellNumOfRow<=aRow.getLastCellNum();cellNumOfRow++){
        if(null!=aRow.getCell(cellNumOfRow)){
         HSSFCell aCell = aRow.getCell(cellNumOfRow);
         int cellType = aCell.getCellType();
         switch(cellType){
         case 0:
          strCell = df.format(aCell.getNumericCellValue());
          out.println(strCell+"     ");
          break;
         case 1:
          strCell = aCell.getStringCellValue();
          out.println(strCell+"     ");
          break;
         default:
          out.println("格式错误");
         }
        }
       }
       out.print("
    ");
      }
     }
    }
   }
  }catch(Exception e){
   System.out.println("error at readExcel"+e);
  }
 }
}

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使用POI操作EXCEL工作簿（一） | 让Eclipse对泛型支持

• 2007-11-20 10:18
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