使用servlet和jsp在数据库中插入5行数据
[英]insert 5 rows of data in the database using servlet and jsp
问题描述
I want to insert 5 rows of data in mysql database. 
我想在mysql数据库中插入5行数据。 I know how to do it for 1 row at a time but I dont know how to send more than one row. 我知道如何一次只发送一行，但是我不知道如何发送多行。
timesheet.jsp 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>
In TimsheetDao.java 在TimsheetDao.java中
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;
}
}
In TimeSheetServlet.java 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>
}
EmployeeBean: 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+ "]";
}
}
I dont know how to make employeebean to list type... pelase check the Timesheetservlet and timesheetdao. 我不知道如何使employeebean列出类型...请检查Timesheetservlet和timesheetdao。
please help me to insert 5 rows in database. 请帮助我在数据库中插入5行。
thanks! 谢谢！
2 个解决方案
解决方案1
1 2015-10-29 10:14:11
You need to use batch inserts: http://viralpatel.net/blogs/batch-insert-in-java-jdbc/ Look at "SQL Injection Safe Batch" section. 您需要使用批处理插入： http : //viralpatel.net/blogs/batch-insert-in-java-jdbc/查看“ SQL注入安全批处理”部分。 I have modified the TimeSheetDao.insert method as below: 我已经修改了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();
}
}
解决方案2
1 已采纳 2015-10-29 12:48:31
I have changed your jsp to have different names for the different rows. 我已将您的jsp更改为不同的行使用不同的名称。 and also changed the serverlet code to read and build the list of employee bean. 并且还更改了serverlet代码以读取并构建雇员bean列表。 once you do these changes you can use the logic mentioned by the chrisI08 abovve. 完成这些更改后，就可以使用chrisI08 abovve提到的逻辑。 timesheet.jsp. 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>
servlet: servlet的：
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);
Note: I have not compiled this code.you may need to change few things. 注意：我尚未编译此代码。您可能需要更改一些内容。
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