如何在mysql数据库中插入多行

Question

我想通过一个查询将多个记录插入到mysql数据库中，出现错误； java.lang.ArrayIndexOutOfBoundsException：1

一直试图在Mysql数据库中插入多个记录。从动态创建的jsp输入字段中动态捕获值。

package ComDairy;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//@WebServlet("/pricing")
public class pricing extends HttpServlet {

    private static final long serialVersionUID = 1L;

    public pricing() {
        super();
    }

    protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, SQLException {
        response.setContentType("text/html;charset=UTF-8");

        try {
            String projid = null;
            String projname = null;
            String projprice = null;

            String[] itemid ={ request.getParameter("itemid")};
            String[] Itemname ={ request.getParameter("itemname")};
            String[] Itemprice ={ request.getParameter("itemprice")};

            MyDB db = new MyDB();
            Connection con = db.getCon();

            //Statement stmt = con.createStatement();
            PreparedStatement st = null;
            //String sql = "insert into pricelist(Itemid,Itemname, Itemprice)" + " values('" + projid + "','" + projname + "','" + projprice + "')";
            //String sql = "update pricelist set Itemid = ?,Itemname = ? ,Itemprice = ?";
            String sql = "insert into pricelist(Itemid,Itemname,Itemprice)" + " values(?,?,?)";

            con.setAutoCommit(false);
            st = con.prepareStatement(sql);
            for (int i = 0; i < 5; i++) {
                projid = itemid[i] + " " + 1;
                projname = Itemname[i] + " " + 1;
                projprice = Itemprice[i] + " " + 1;

                st.setString(1, projid);
                st.setString(2, projname);
                st.setString(3, projprice);

                st.addBatch();
            }
            int counts[] = st.executeBatch();

            con.commit();

        } catch (SQLException ex) {
            Logger.getLogger(pricing.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(pricing.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(pricing.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

}package ComDairy;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

//@WebServlet("/pricing")
public class pricing extends HttpServlet {

    private static final long serialVersionUID = 1L;

    public pricing() {
        super();
    }

    protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, SQLException {
        response.setContentType("text/html;charset=UTF-8");

        try {
            String projid = null;
            String projname = null;
            String projprice = null;

            String[] itemid ={ request.getParameter("itemid")};
            String[] Itemname ={ request.getParameter("itemname")};
            String[] Itemprice ={ request.getParameter("itemprice")};

            MyDB db = new MyDB();
            Connection con = db.getCon();

            //Statement stmt = con.createStatement();
            PreparedStatement st = null;
            //String sql = "insert into pricelist(Itemid,Itemname, Itemprice)" + " values('" + projid + "','" + projname + "','" + projprice + "')";
            //String sql = "update pricelist set Itemid = ?,Itemname = ? ,Itemprice = ?";
            String sql = "insert into pricelist(Itemid,Itemname,Itemprice)" + " values(?,?,?)";

            con.setAutoCommit(false);
            st = con.prepareStatement(sql);
            for (int i = 0; i < 5; i++) {
                projid = itemid[i] + " " + 1;
                projname = Itemname[i] + " " + 1;
                projprice = Itemprice[i] + " " + 1;

                st.setString(1, projid);
                st.setString(2, projname);
                st.setString(3, projprice);

                st.addBatch();
            }
            int counts[] = st.executeBatch();

            con.commit();

        } catch (SQLException ex) {
            Logger.getLogger(pricing.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(pricing.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(pricing.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

}

我希望通过单击按钮将记录保存到数据库中