poi导入导出

用到的jar包

代码

package com.exceloperation;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.Statement;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Iterator;

import java.util.List;



import javax.rmi.CORBA.Tie;



import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;

import org.apache.poi.hssf.usermodel.HSSFFont;

import org.apache.poi.hssf.usermodel.HSSFRow;

import org.apache.poi.hssf.usermodel.HSSFSheet;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

import org.apache.poi.hssf.util.HSSFColor;

import org.apache.poi.ss.usermodel.Cell;

import org.apache.poi.ss.usermodel.CellValue;

import org.apache.poi.ss.usermodel.FormulaEvaluator;

import org.apache.poi.ss.usermodel.Row;

import org.apache.poi.ss.usermodel.Sheet;

import org.apache.poi.ss.usermodel.Workbook;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ExcelOperation {

    /**

     * 存所有的excel数据

     */

    static List<List<Object>>all=new ArrayList<List<Object>>();

    static Connection conn =null;

    public static void main(String[] args) {

         importExcel("D://数据模板1.xlsx");

//         System.out.println(conn);

//         try{

//                Statement createStatement = conn.createStatement();

//                for (List<Object> list : all) {

//                    String sql="insert into excelTable(tradType,tradTime,tradWater,institution,phone,name,"+

//                    "psamId,tradNo,tradNoTwo,tradMoney,tradPoundage,tradStatus,remark)"+"values("+

//                    "'"+list.get(1)+"','"+list.get(2)+"','"+list.get(3)+"','"+list.get(4)+"'," +

//                    "'"+list.get(5)+"','"+list.get(6)+"','"+list.get(7)+"','"+list.get(8)+"',"+

//                    "'"+list.get(9)+"','"+list.get(10)+"','"+list.get(11)+"','"+list.get(12)+"','"+list.get(13)+"')";

//                    System.out.println(sql);

//                    createStatement.execute(sql);

//                }

//                conn.close();

//            }catch (Exception e) {

//                e.printStackTrace();

//            }

            //导出

            outExcel("D://123456.xls");

    }

    

    static {

        try {

            String url = "jdbc:sqlserver://192.168.1.177:1433;DatabaseName=excelDataBase"; 

            String uername = "sa";                                                         

            String password = "123456";                                                    

            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");

            conn = DriverManager.getConnection(url, uername, password);

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

    /**

    *导出excel

    */

    private static void outExcel(String path){

        try {

            //List<String>data=new ArrayList<String>();

            String[] title={"编号","交易类型","交易时间","交易流水","隶属机构","手机号","姓名","PSAM卡号",

                    "交易卡号","第二次交易账号","交易金额","交易手续费","交易状态","备注"};

             HSSFWorkbook wb=new HSSFWorkbook();

             HSSFSheet sheet = wb.createSheet("sheet1");

             for(int sheetWidth=0;sheetWidth<title.length;sheetWidth++){

                 sheet.setColumnWidth(sheetWidth, 3700);

             }

             HSSFRow row = sheet.createRow(0);

             HSSFCellStyle style=wb.createCellStyle();

             style.setAlignment(HSSFCellStyle.ALIGN_CENTER);

             style.setWrapText(true);

             HSSFCell cell=row.createCell(0);

             //设置title

             for(int i=0;i<title.length;i++){

                 cell.setCellValue(title[i]);

                 cell.setCellStyle(style);

                 cell=row.createCell((short)(i+1));

             }

             //写入数据

             for(int r=0;r<all.size();r++){

                 List<Object> list = all.get(r);

                     row=sheet.createRow(r+1);

                     for(int c=0;c<title.length;c++){

                         row.createCell((short)c).setCellValue(list.get(c)+"");

                     }

             }

             FileOutputStream out=new FileOutputStream(path);

             wb.write(out);

             out.close();

           

        } catch (Exception e) {

            e.printStackTrace();

        }  

    }

    /**

     * 获取excel的数据

     */

    private static void importExcel(String path){

        StringBuilder sbu=new StringBuilder();

        String xls=".xls";

        String xlsx=".xlsx";

        String ext=path.substring(path.lastIndexOf("."), path.length()).toLowerCase();

        System.out.println(ext);

        Workbook wl=null;

        if(!new File(path).exists())

        {

            throw new RuntimeException("文件不存在!");

        }

        try{

            if(ext.equals(xls)){

                wl=new HSSFWorkbook(new FileInputStream(new File(path)));

            }

            if(ext.equals(xlsx)){

                wl=new XSSFWorkbook(new FileInputStream(new File(path)));

            }

            // 解析公式结果  

            FormulaEvaluator evaluator = wl.getCreationHelper().createFormulaEvaluator();  

            Sheet sheetAt = wl.getSheetAt(0);

            int firstRowNum = sheetAt.getFirstRowNum();

            int lastRowNum = sheetAt.getLastRowNum();

            for(int i=firstRowNum;i<=lastRowNum;i++){

                List<Object>domian=new ArrayList<Object>();

                Row row = sheetAt.getRow(i+2);

                short firstColumnNum = row.getFirstCellNum();

                short lastColumnNum = row.getLastCellNum();

                for(short j=firstColumnNum;j<lastColumnNum;j++){

                     Cell cell = row.getCell(new Integer(j));

                     CellValue eva = evaluator.evaluate(cell);

                     if(null==eva){

                         continue;

                     }

                    // 经过公式解析，最后只存在Boolean、Numeric和String三种数据类型，此外就是Error了  

                    // 其余数据类型，根据官方文档，完全可以忽略http://poi.apache.org/spreadsheet/eval.html

                    switch (eva.getCellType()) {

                    case Cell.CELL_TYPE_BOOLEAN:

                         domian.add(eva.getBooleanValue());

                         sbu.append(eva.getBooleanValue()+"\t");

                        break;

                    case Cell.CELL_TYPE_NUMERIC:

                        if(org.apache.poi.ss.usermodel.DateUtil.isCellDateFormatted(cell)){

                            //new SimpleDateFormat("yyyy-MM-dd").format(cell.getDateCellValue())

                             domian.add(cell.getDateCellValue());

                            sbu.append(cell.getDateCellValue()+"\t");

                        }else{

                            domian.add(eva.getNumberValue());

                            sbu.append(eva.getNumberValue()+"\t");

                        }

                        break;

                    case Cell.CELL_TYPE_STRING:

                        domian.add(eva.getStringValue());

                        sbu.append(eva.getStringValue()+"\t");

                        break;

                    case Cell.CELL_TYPE_FORMULA:

                        break;

                    case Cell.CELL_TYPE_BLANK:

                        break;

                    case Cell.CELL_TYPE_ERROR:

                        break;

                    default:

                        break;

                    }

                }

                all.add(domian);

                sbu.append("\r\n");

            }

        }catch (Exception e) {

            e.printStackTrace();

        }

        

        System.out.println(sbu.toString());

        System.out.println("----------------");

        for (List<Object> list : all) {

            System.out.println(Arrays.asList(list.toArray()));

        }

    }

}