我想在mysql数据库中插入5行数据。我知道如何一次一行，但我不知道如何发送多行。
timesheet.jsp
<%@page language="java" contentType="text/html charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script type="text/javascript">
$(window).load(function(){
function updateHours(row){
var $date = row.find('[name="date"]');
var $time1 = row.find('[name="logintime"]');
var $time2 = row.find('[name="logouttime"]');
var $time3 = row.find('[name="lunch"]');
var $time4 = row.find('[name="afterlunchlogin"]');
var $time5 = row.find('[name="afterlunchlogout"]');
var $diff = row.find('.totalTime');
var $over = row.find('.overTime');
if($time1.val() && $time2.val() && $time3.val() && $time4.val() && $time5.val())
{
var dateInput = $date.val();
var dtStart = new Date(dateInput + " " + $time1.val());
var dtEnd = new Date(dateInput + " " + $time2.val());
var dtLunch= new Date(dateInput + " " + $time3.val());
var dtStartafterlunch = new Date(dateInput + " " + $time4.val());
var dtEndafterlunch = new Date(dateInput + " " + $time5.val());
var diff = ((dtEnd - dtStart)+(dtEndafterlunch-dtStartafterlunch)) / 1000;
var totalTime = 0;
var overTime = 0;
if (diff > 60*60*8) {
overTime = formatDate(diff - 60*60*8);
} else {
totalTime = formatDate(diff);
}
totalTime = formatDate(diff);
$diff.val(totalTime);
$over.val(overTime);
}
}
function formatDate(diff){
var hours = parseInt( diff / 3600 ) % 24;
var minutes = parseInt( diff / 60 ) % 60;
var seconds = diff % 60;
return (hours < 10 ? "0" + hours : hours) + ":" + (minutes < 10 ? "0" + minutes : minutes) + ":" + (seconds < 10 ? "0" + seconds : seconds);
}
$(".start, .end, .lunch, .startafterlunch, .endafterlunch, .totalTime").on("change, keyup", function(){
debugger
updateHours($(this).closest('tr'));
});
});
</script>
<title>Timesheet Page</title>
</head>
<body>
<header>
<h2>WEEKLY TIME SHEET MANAGEMENT V 1.0</h2>
</header>
<form action="TimeSheet" method="post">
<fieldset style="width: 90%">
<legend>Timesheet</legend>
<h2>Time Sheet application</h2>
<table border=1>
<tr><th>Employee ID</th><th>Date</th><th>Time In</th><th>Time Out</th><th>Lunch</th><th>After Lunch Time in</th><th>After Lunch Time out</th><th>Task Description</th><th>Total Hours</th><th>Overtime</th> </tr>
<tr> <td><input type="text" name="empid" required="required" /></td>
<td><input type="date" id="date" name="date"/></td>
<td><input type="time" class="start" name="logintime"/></td>
<td><input type="time" class="end"name="logouttime" /></td>
<td><input type="time" class="lunch" name="lunch" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin"/></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout"/></td>
<td><input type="textarea" name="task" required="required" /></td>
<td><input class="totalTime" readonly="readonly" /></td>
<td><input class="overTime" readonly="readonly" /></td></tr>
<tr> <td><input type="text" name="empid" required="required" /></td>
<td><input type="date" id="date" name="date"/></td>
<td><input type="time" class="start" name="logintime"/></td>
<td><input type="time" class="end"name="logouttime" /></td>
<td><input type="time" class="lunch" name="lunch" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin"/></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout"/></td>
<td><input type="textarea" name="task" required="required" /></td>
<td><input class="totalTime" readonly="readonly" /></td>
<td><input class="overTime" readonly="readonly" /></td></tr>
<tr> <td><input type="text" name="empid" required="required" /></td>
<td><input type="date" id="date" name="date"/></td>
<td><input type="time" class="start" name="logintime"/></td>
<td><input type="time" class="end"name="logouttime" /></td>
<td><input type="time" class="lunch" name="lunch" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin"/></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout"/></td>
<td><input type="textarea" name="task" required="required" /></td>
<td><input class="totalTime" readonly="readonly" /></td>
<td><input class="overTime" readonly="readonly" /></td></tr>
<tr> <td><input type="text" name="empid" required="required" /></td>
<td><input type="date" id="date" name="date"/></td>
<td><input type="time" class="start" name="logintime"/></td>
<td><input type="time" class="end"name="logouttime" /></td>
<td><input type="time" class="lunch" name="lunch" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin"/></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout"/></td>
<td><input type="textarea" name="task" required="required" /></td>
<td><input class="totalTime" readonly="readonly" /></td>
<td><input class="overTime" readonly="readonly" /></td></tr>
<tr> <td><input type="text" name="empid" required="required" /></td>
<td><input type="date" id="date" name="date"/></td>
<td><input type="time" class="start" name="logintime"/></td>
<td><input type="time" class="end"name="logouttime" /></td>
<td><input type="time" class="lunch" name="lunch" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin"/></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout"/></td>
<td><input type="textarea" name="task" required="required" /></td>
<td><input class="totalTime" readonly="readonly" /></td>
<td><input class="overTime" readonly="readonly" /></td></tr>
</table>
</fieldset>
<input type="submit" value="Submit">
</form>
<a href="logout.jsp">Logout</a>
</body>
</html>
在TimsheetDao.java
package com.eis.Dao;
import com.eis.bean.ConnectionProvider;
import com.eis.bean.EmployeeBean;
import java.sql.*;
import java.text.SimpleDateFormat;
import java.util.Calendar;
public class TimeSheetDao {
public static int insert(EmployeeBean eb,String sql) throws Exception {
int i=0;
PreparedStatement ps=null;
System.out.println("In TimesheetDao");
Connection conn=ConnectionProvider.getConn();
try{
System.out.println(" in try in Timesheetdao");
ps = conn.prepareStatement(sql);
ps.setString(1,eb.getEmpid());
// ps.setDate(2, (java.sql.Date) eb.getLoginDate());
// ps.setDate(3, (Date) eb.getLoginTime());
// ps.setDate(4, (Date) eb.getLogoutTime());
ps.setDate(2,new Date(eb.getLogindate().getTime()));
ps.setString(3,eb.getLogintime());
ps.setString(4,eb.getLogouttime());
ps.setString(5,eb.getLunch());
ps.setString(6,eb.getAfterlunchlogin());
ps.setString(7,eb.getAfterlunchlogout());
ps.setString(8,eb.getTask());
ps.setString(9,eb.getTotal());
ps.setString(10,eb.getOvertime());
i=ps.executeUpdate();
/*rs = pst.executeQuery();
status = rs.next(); */
}
catch(Exception e){
System.out.println(e);
}
finally {
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if (ps != null) {
try {
ps.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
return i;
}
}
在TimeSheetServlet.java中
package com.eis.servlet;
import com.eis.Dao.TimeSheetDao;
import com.eis.bean.EmployeeBean;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class TimeSheet extends HttpServlet {
private static final long serialVersionUID = 1L;
private TimeSheetDao dao;
public TimeSheet() {
super();
dao = new TimeSheetDao();
}
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException, ParseException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
EmployeeBean eb = new EmployeeBean();
String Emp_id=request.getParameter("empid");
eb.setEmpid(Emp_id);
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
Date logindate = new java.sql.Date(formatter.parse(request.getParameter("logindate")).getTime());
eb.setLogindate((java.sql.Date) logindate);
String LoginTime=request.getParameter("logintime");
eb.setLogintime(LoginTime);
String LogoutTime=request.getParameter("logouttime"); eb.setLogouttime(LogoutTime);
String Lunch=request.getParameter("lunch"); eb.setLunch(Lunch);
String AfterLunchLogin=request.getParameter("afterlunchlogin"); eb.setAfterlunchlogin(AfterLunchLogin);
String AfterLunchLogout=request.getParameter("afterlunchlogout"); eb.setAfterlunchlogout(AfterLunchLogout);
String TaskDescription=request.getParameter("task"); eb.setTask(TaskDescription);
String TotalHours=request.getParameter("total"); eb.setTotal(TotalHours);
String OverTime=request.getParameter("overtime"); eb.setOvertime(OverTime);
System.out.println(request.getParameter("empid"));
HttpSession session = request.getSession(true);
try{if (Emp_id!=null){
session.setAttribute("Emp_id",Emp_id);}
}catch(Exception e){e.printStackTrace();}
try{if (logindate!=null){
session.setAttribute("LoginDate",logindate);}
}catch(Exception e){e.printStackTrace();}
try{if (LoginTime!=null){
session.setAttribute("LoginTime",LoginTime);}
}catch(Exception e){e.printStackTrace();}
try{if (LogoutTime!=null){
session.setAttribute("LogoutTime",LogoutTime);}
}catch(Exception e){e.printStackTrace();}
try{if (Lunch!=null){
session.setAttribute("Lunch",Lunch);}
}catch(Exception e){e.printStackTrace();}
try{if (AfterLunchLogin!=null){
session.setAttribute("AfterLunchLogin",AfterLunchLogin);}
}catch(Exception e){e.printStackTrace();}
try{if (AfterLunchLogout!=null){
session.setAttribute("AfterLunchLogout",AfterLunchLogout);}
}catch(Exception e){e.printStackTrace();}
try{if (TaskDescription!=null){
session.setAttribute("TaskDescription",TaskDescription);}
}catch(Exception e){e.printStackTrace();}
try{if (TotalHours!=null){
session.setAttribute("TotalHours",TotalHours);}
}catch(Exception e){e.printStackTrace();}
try{if (OverTime!=null){
session.setAttribute("OverTime",OverTime);}
}catch(Exception e){e.printStackTrace();}
TimeSheetDao dao = new TimeSheetDao();
System.out.println("before sql");
String sql= "insert into logintable values(?,?,?,?,?,?,?,?,?,?)";
System.out.println("after sql");
try {
System.out.println("in try servlet after sql");
int status = TimeSheetDao.insert(eb, sql);
System.out.println("in try dao after sql");
if(status!=0){
out.print("<p style=\"color:Green\">Record saved successfully!!</p>");
RequestDispatcher rd=request.getRequestDispatcher("index.jsp");
rd.include(request,response);
}
else{
out.print("<p style=\"color:red\">**Record cannot be saved!**</p>");
RequestDispatcher rd=request.getRequestDispatcher("index.jsp");
rd.include(request,response);
}
}
catch(Exception e){
e.printStackTrace();
}
}
// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/**
* Handles the HTTP <code>GET</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
processRequest(request, response);
} catch (ParseException ex) {
Logger.getLogger(TimeSheet.class.getName()).log(Level.SEVERE, null, ex);
}
}
/**
* Handles the HTTP <code>POST</code> method.
*
* @param request servlet request
* @param response servlet response
* @throws ServletException if a servlet-specific error occurs
* @throws IOException if an I/O error occurs
*/
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
try {
processRequest(request, response);
} catch (ParseException ex) {
Logger.getLogger(TimeSheet.class.getName()).log(Level.SEVERE, null, ex);
}
}
/**
* Returns a short description of the servlet.
*
* @return a String containing servlet description
*/
@Override
public String getServletInfo() {
return "Short description";
}// </editor-fold>
}
引用EmployeeBean：
package com.eis.bean;
import java.util.Date;
public class EmployeeBean {
private String empid;
private java.sql.Date logindate;
private String logintime;
private String logouttime;
private String lunch;
private String afterlunchlogin;
private String afterlunchlogout;
private String task;
private String total;
private String overtime;
public String getEmpid() {
return empid;
}
public void setEmpid(String empid) {
this.empid = empid;
}
public java.sql.Date getLogindate() {
return logindate;
}
public void setLogindate(java.sql.Date logindate) {
this.logindate = logindate;
}
public String getLogintime() {
return logintime;
}
public void setLogintime(String logintime) {
this.logintime = logintime;
}
public String getLogouttime() {
return logouttime;
}
public void setLogouttime(String logouttime) {
this.logouttime = logouttime;
}
public String getLunch() {
return lunch;
}
public void setLunch(String lunch) {
this.lunch = lunch;
}
public String getAfterlunchlogin() {
return afterlunchlogin;
}
public void setAfterlunchlogin(String afterlunchlogin) {
this.afterlunchlogin = afterlunchlogin;
}
public String getAfterlunchlogout() {
return afterlunchlogout;
}
public void setAfterlunchlogout(String afterlunchlogout) {
this.afterlunchlogout = afterlunchlogout;
}
public String getTask() {
return task;
}
public void setTask(String task) {
this.task = task;
}
public String getTotal() {
return total;
}
public void setTotal(String total) {
this.total = total;
}
public String getOvertime() {
return overtime;
}
public void setOvertime(String overtime) {
this.overtime = overtime;
}
@Override
public String toString() {
return "EmployeeBean [empid=" + empid + ",logindate=" + logindate + ", logintime=" + logintime+ ", logouttime=" + logouttime + ", lunch=" + lunch+ ", afterlunchlogin=" + afterlunchlogin+ ", afterlunchlogout=" + afterlunchlogout+ ", task=" + task+ ", total=" + total+ ",overtime=" + overtime+ "]";
}
}
我不知道如何使employeebean列出类型... pelase检查Timesheetservlet和timesheetdao。
请帮我在数据库中插入5行。
谢谢！
答案 0 :(得分：1)
您需要使用批量插入：http://viralpatel.net/blogs/batch-insert-in-java-jdbc/查看＆＃34; SQL注入安全批处理＆＃34;部分。我修改了TimeSheetDao.insert方法，如下所示：
import java.sql.Connection;
import java.sql.PreparedStatement;
public class TimeSheetDao {
// this sql string can be static final
public static final String sql= "insert into logintable values(?,?,?,?,?,?,?,?,?,?)";
public static int insert(List<EmployeeBean> employees) throws Exception {
Connection connection = new getConnection();
PreparedStatement ps = connection.prepareStatement(sql);
try {
for (EmployeeBean employee: employees) {
// set parameters here
ps.setDate(2,new Date(eb.getLogindate().getTime()));
ps.setString(3,eb.getLogintime());
ps.setString(4,eb.getLogouttime());
ps.setString(5,eb.getLunch());
ps.setString(6,eb.getAfterlunchlogin());
ps.setString(7,eb.getAfterlunchlogout());
ps.setString(8,eb.getTask());
ps.setString(9,eb.getTotal());
ps.setString(10,eb.getOvertime());
ps.addBatch();
}
ps.executeBatch();
} finally {
ps.close();
connection.close();
}
}
答案 1 :(得分：1)
我已将您的jsp更改为具有不同行的不同名称。 并且还更改了serverlet代码以读取和构建employee bean列表。 一旦你做了这些改变，你可以使用chrisI08 abovve提到的逻辑。 timesheet.jsp。
<%@page language="java" contentType="text/html charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Timesheet Page</title>
</head>
<body>
<form action="TimeSheetServlet" method="post">
<fieldset style="width: 90%">
<legend>Timesheet</legend>
<table>
<thead><tr><th>Employee ID</th><th>Date</th><th>Time In</th><th>Time Out</th><th>Lunch</th><th>After Lunch Time in</th><th>After Lunch Time out</th><th>Task Description</th><th>Total Hours</th><th>Overtime</th> </tr>
</thead>
<tbody>
<tr>
<td><input type="text" name="empid1" required="required" /></td>
<td><input type="date" id="date" name="logindate1" required="required" /></td>
<td><input type="time" class="start" name="logintime1" required="required" /></td>
<td><input type="time" class="end" name="logouttime1" required="required" /></td>
<td><input type="time" class="lunch" name="lunch1" required="required" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin1" required="required" /></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout1" required="required" /></td>
<td><input type="textarea" name="1" required="required" /></td>
<td><input type="time" class="totalTime" name="total1" /></td>
<td><input type="time" class="overTime" name="overtime1" required="required" /></td>
</tr>
<tr>
<td><input type="text" name="empid2" required="required" /></td>
<td><input type="date" id="date" name="logindate2" required="required" /></td>
<td><input type="time" class="start" name="logintime2" required="required" /></td>
<td><input type="time" class="end" name="logouttime2" required="required" /></td>
<td><input type="time" class="lunch" name="lunch2" required="required" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin2" required="required" /></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout2" required="required" /></td>
<td><input type="textarea" name="task2" required="required" /></td>
<td><input type="time" class="totalTime" name="total2" /></td>
<td><input type="time" class="overTime" name="overtime2" required="required" /></td>
</tr>
<tr>
<td><input type="text" name="empid3" required="required" /></td>
<td><input type="date" id="date" name="logindate3" required="required" /></td>
<td><input type="time" class="start" name="logintime3" required="required" /></td>
<td><input type="time" class="end" name="logouttime3" required="required" /></td>
<td><input type="time" class="lunch" name="lunch3" required="required" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin3" required="required" /></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout3" required="required" /></td>
<td><input type="textarea" name="task" required="required" /></td>
<td><input type="time" class="totalTime" name="total3" /></td>
<td><input type="time" class="overTime" name="overtime3" required="required" /></td>
</tr>
<tr>
<td><input type="text" name="empid4" required="required" /></td>
<td><input type="date" id="date" name="logindate4" required="required" /></td>
<td><input type="time" class="start" name="logintime4" required="required" /></td>
<td><input type="time" class="end" name="logouttime4" required="required" /></td>
<td><input type="time" class="lunch" name="lunch4" required="required" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin4" required="required" /></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout4" required="required" /></td>
<td><input type="textarea" name="task" required="required" /></td>
<td><input type="time" class="totalTime" name="total4" /></td>
<td><input type="time" class="overTime" name="overtime4" required="required" /></td>
</tr>
<tr>
<td><input type="text" name="empid5" required="required" /></td>
<td><input type="date" id="date" name="logindate5" required="required" /></td>
<td><input type="time" class="start" name="logintime5" required="required" /></td>
<td><input type="time" class="end" name="logouttime5" required="required" /></td>
<td><input type="time" class="lunch" name="lunch5" required="required" /></td>
<td><input type="time" class="startafterlunch" name="afterlunchlogin5" required="required" /></td>
<td><input type="time" class="endafterlunch" name="afterlunchlogout5" required="required" /></td>
<td><input type="textarea" name="task5" required="required" /></td>
<td><input type="time" class="totalTime" name="total5" /></td>
<td><input type="time" class="overTime" name="overtime5" required="required" /></td>
</tr>
</tbody>
</table>
</fieldset>
<input type="submit" value="Submit">
</form>
<a href="logout.jsp">Logout</a>
</body>
</html>
的servlet：
List<EmployeeBean> ebList= ArrayList<EmployeeBean>();
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd", Locale.US);
for(int i=1;i<=5;i++){
EmployeeBean eb = new EmployeeBean();
eb.setEmpid(Emp_id);
Date logindate = new java.sql.Date(formatter.parse(request.getParameter("logindate"+i)).getTime());
eb.setLogindate((java.sql.Date) logindate);
//String Date=request.getParameter("logindate");
String LoginTime=request.getParameter("logintime"+i);
eb.setLogintime(LoginTime);
eb.setLogouttime(request.getParameter("logouttime"+i));
eb.setLunch(request.getParameter("lunch"+i));
eb.setAfterlunchlogin(request.getParameter("afterlunchlogin"+i));
eb.setAfterlunchlogout(request.getParameter("afterlunchlogout"+i));
eb.setTask(request.getParameter("task"+i));
eb.setTotal(request.getParameter("total"+i));
eb.setOvertime(request.getParameter("overtime"+i));
}
TimeSheetDao.insert(ebList);
注意：我没有编译此代码。您可能需要更改一些内容。