Question

我想通过java程序将excel表数据插入数据库我没有得到实际的输出。 excel表不包含他们在行中给出的标题我需要获取每一行并将其作为插入脚本。

数据应直接插入数据库

  client                   page                AcessDate           ProcessTime  bytes
12.34.56.9876545    hello.jsp           6/3/2014 5:52:16 PM 3        123
12.34.56.9876545    SignOut.jsp         6/3/2014 6:21:16 PM 0   1724
12.34.56.9876545    Login.jsp           6/3/2014 6:21:16 PM 0   4937

我认为输出为

insert into ClickStream(Client,Page,AccessDate,ProcessTime,Bytes)
value('"+12.34.56.9876545   +"','"+hello.jsp+"','"+ 6/3/2014 5:52:16 PM+"','"+3+"','"+1724+"'"

我正在使用我没有得到的代码，看看我的代码是否正常工作我无法获得正确的输出

import java.io.FileInputStream;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;
import java.util.Iterator;
import java.util.Vector;

import org.apache.poi.openxml4j.opc.OPCPackage;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

  public class InsertExcelFileData {
  public static void main( String [] args ) {
    String fileName="F:\\book.xlsx";
    Vector dataHolder=read(fileName);
    saveToDatabase(dataHolder);
}
    public static Vector read(String fileName)    {
    Vector cellVectorHolder = new Vector();
    try{
            FileInputStream myInput = new FileInputStream(fileName);
            //POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput);
        XSSFWorkbook myWorkBook = new XSSFWorkbook(myInput);
        XSSFSheet mySheet = myWorkBook.getSheetAt(0);
       Iterator rowIter = mySheet.rowIterator(); 
       while(rowIter.hasNext()){
              XSSFRow myRow = (XSSFRow) rowIter.next();
              Iterator cellIter = myRow.cellIterator();
              Vector cellStoreVector=new Vector();
              while(cellIter.hasNext()){
                      XSSFCell myCell = (XSSFCell) cellIter.next();
                      cellStoreVector.addElement(myCell);
              }
              cellVectorHolder.addElement(cellStoreVector);
      }
    }catch (Exception e){e.printStackTrace(); }
    return cellVectorHolder;
}
    private static void saveToDatabase(Vector dataHolder) {
    String Client="";
            String Page="";
              String AccessDate="";
              String   ProcessTime="";
              String Bytes="";
            for (int i=0;i<dataHolder.size(); i++){
               Vector cellStoreVector=(Vector)dataHolder.elementAt(i);
                    for (int j=0; j < cellStoreVector.size();j++){
                            XSSFCell myCell = (XSSFCell)cellStoreVector.elementAt(j);
                            String st = myCell.toString();
                            Client=st;
                            Page=st.substring(0);
                            System.out.print(st);
                                        }
                    try{
Class.forName("com.jnetdirect.jsql.JSQLDriver").newInstance();
Connection con = DriverManager.getConnection("jdbc:JSQLConnect://12.33.44.55/database=Environment", "root", "root");
    Statement stat=con.createStatement();
    int k=stat.executeUpdate("insert into ClickStream(Client,Page,AccessDate,ProcessTime,Bytes) value('"+Client+"','"+Page+"','"+AccessDate+"','"+ProcessTime+"','"+Bytes+"'");
    System.err.print(k);

    System.out.println("Data is inserted");
    stat.close();
    con.close();
    }
    catch(Exception e){}
    }
    }
  }

请帮助让代码正常运行

Answer 1

实际上你的迭代几乎没有问题。我希望这段代码可能对你有所帮助

import java.io.FileInputStream;
import java.sql.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Vector;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ExcelToDb {
    public static void main( String [] args ) {
        String fileName="G:\\book.xlsx";
        Vector dataHolder=read(fileName);
        saveToDatabase(dataHolder);
    }
    public static Vector read(String fileName)    {
        Vector cellVectorHolder = new Vector();
        try{
            FileInputStream myInput = new FileInputStream(fileName);
            //POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput);
            XSSFWorkbook myWorkBook = new XSSFWorkbook(myInput);
            XSSFSheet mySheet = myWorkBook.getSheetAt(0);
            Iterator rowIter = mySheet.rowIterator();
            while(rowIter.hasNext()){
                XSSFRow myRow = (XSSFRow) rowIter.next();
                Iterator cellIter = myRow.cellIterator();
                //Vector cellStoreVector=new Vector();
                List list = new ArrayList();
                while(cellIter.hasNext()){
                    XSSFCell myCell = (XSSFCell) cellIter.next();
                    list.add(myCell);
                }
                cellVectorHolder.addElement(list);
            }
        }catch (Exception e){e.printStackTrace(); }
        return cellVectorHolder;
    }
    private static void saveToDatabase(Vector dataHolder) {
        String ClientAdd="";
        String Page="";
        String AccessDate="";
        String   ProcessTime="";
        String Bytes="";
        System.out.println(dataHolder);

        for(Iterator iterator = dataHolder.iterator();iterator.hasNext();) {
            List list = (List) iterator.next();
            ClientAdd = list.get(0).toString();
            Page = list.get(1).toString();
            AccessDate = list.get(2).toString();
            ProcessTime = list.get(3).toString();

            try {
                Class.forName("com.mysql.jdbc.Driver").newInstance();
                Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/test", "root", "welcome");
                System.out.println("connection made...");
                PreparedStatement stmt=con.prepareStatement("INSERT INTO ClickStream(ClientAdd,Page,AccessDate,ProcessTime) VALUES(?,?,?,?)");
                stmt.setString(1, ClientAdd);
                stmt.setString(2, Page);
                stmt.setString(3, AccessDate);
                stmt.setString(4, ProcessTime);
                stmt.executeUpdate();

                System.out.println("Data is inserted");
                stmt.close();
                con.close();
            } catch (ClassNotFoundException e) {
                e.printStackTrace();
            } catch (SQLException e) {
                e.printStackTrace();
            } catch (InstantiationException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }



        }
    }

Answer 2

为什么不将excel文件导出到csv文件中，然后用它将其加载到db？

将Excel数据插入数据库

2 个答案: