POI实现excel导入

上一篇写了从数据库导出excel。今天继上一篇写出从excel导入数据库。数据库表有这些字段：ID,BOOK_NAME,BOOK_AUTHOR,BOOK_PUBLISH,BOOK_DATE,BOOK_ISBN,BOOK_PAGE,BOOK_PRICE。

连接数据库类：

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DBConnection {

private String classString="oracle.jdbc.driver.OracleDriver";
private String username="benz";
private String password="benz";
private String url="java:oracle:thin:@192.168.1.17:1521:bhdba";
private Connection con=null;

public Connection getConnection(){
try {
Class.forName(classString);
con=DriverManager.getConnection(url,username,password);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return con;
}

}

具体操纵类：

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.sql.Connection;
import java.sql.Date;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.text.ParseException;
import java.text.SimpleDateFormat;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class ExcelToDB {

private Connection con;
private DBConnection db;
private PreparedStatement pst;
private String filePath="f:\\test.xls";

public boolean insertDB(){

boolean flag=true;
db=new DBConnection();
con=db.getConnection();
try {
//文件流指向excel文件
FileInputStream fin=new FileInputStream(filePath);
HSSFWorkbook workbook=new HSSFWorkbook(fin);//创建工作薄
HSSFSheet sheet=workbook.getSheetAt(0);//得到工作表
HSSFRow row=null;//对应excel的行
HSSFCell cell=null;//对应excel的列

int totalRow=sheet.getLastRowNum();//得到excel的总记录条数
//以下的字段一一对应数据库表的字段
String bookName="";
String bookAuthor="";
String bookPublish="";
Date bookDate=null;
String bookIsbn="";
int bookPage=0;
float bookPrice=0.0f;

String sql="insert into book(ID,BOOK_NAME,BOOK_AUTHOR,BOOK_PUBLISH," +
"BOOK_DATE,BOOK_ISBN,BOOK_PAGE,BOOK_PRICE) " +
"values(SEQ_BOOK.NEXTVAL,?,?,?,?,?,?,?)"; //SEQ_BOOK.NEXTVAL为数据库表序列

for(int i=1;i<=totalRow;i++){
row=sheet.getRow(i);
cell=row.getCell(1);
bookName=cell.getRichStringCellValue().toString();
cell=row.getCell(2);
bookAuthor=cell.getRichStringCellValue().toString();
cell=row.getCell(3);
bookPublish=cell.getRichStringCellValue().toString();

cell=row.getCell(4);
//格式化字符串时间
SimpleDateFormat format=new SimpleDateFormat("yyyy-MM-dd");
bookDate=new Date((format.parse(cell.getRichStringCellValue().toString())).getTime());

cell=row.getCell(5);
bookIsbn=cell.getRichStringCellValue().toString();
cell=row.getCell(6);
bookPage=Integer.parseInt(cell.getRichStringCellValue().toString());
cell=row.getCell(7);
bookPrice=Float.parseFloat(cell.getRichStringCellValue().toString());

pst=con.prepareStatement(sql);
pst.setString(1,bookName);
pst.setString(2,bookAuthor);
pst.setString(3,bookPublish);
pst.setDate(4,bookDate);
pst.setString(5,bookIsbn);
pst.setInt(6,bookPage);
pst.setFloat(7,bookPrice);

pst.execute();
}

} catch (FileNotFoundException e) {
flag=false;
e.printStackTrace();
} catch(IOException ex){
flag=false;
ex.printStackTrace();
} catch(SQLException exx){
flag=false;
exx.printStackTrace();
} catch(ParseException exxx){
exxx.printStackTrace();
}finally{
try {
pst.close();
con.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
return flag;

}

public static void main(String args[]){
ExcelToDB toDB=new ExcelToDB();
toDB.insertDB();
}

}

取得Excel文件的总行数和总列数

HSSFSheet hssheet = wb.getSheetAt(0);

HSSFRow row = (HSSFRow) hssheet.getRow(0);

int rowNum = hssheet.getPhysicalNumberOfRows();

short colNum = (short)hssheet.getRow((short)0).getPhysicalNumberOfCells();