JavaWeb项目之电话本，两个版本，以及总结反思
使用技术:
Oracle 数据库
前端后台: Servlet + jsp + JDBC + html + css + js
前端界面自定, 但一定实现需要的功能
实现功能:
用户可以登录
登录之后可以看到自己的存下来的联系人信息, 联系人字段自定(至少包含字段: 联系人姓名, 联系人电话, 存入的时间)
如果直接访问电话本页面需要提醒登录
添加联系人
记录一条数据到数据库,
删除联系人
修改联系人信息
查询联系人
按照名称模糊查询
按照电话号码模糊查询
增删改查的操作不管成功与失败都要有提示消息
第一版本：布置了项目之后自己写的，很多地方因为经验不足，知识储备不足，实现的方法不合适，样式也没有设置
第二版本：上课讲解，实现的方法更加规范
第一版本：
修改功能跳转到其他页面实现
com.util 工具包 包含 通讯录类，用户类，数据库JDBC设置，数据库操作方法类
//JDBC设置
package com.util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import com.util.JdbcConnectionUtil;
public class JdbcConnectionUtil {
private static final String USERNAME = "test";
private static final String PASSWORD = "test";
private static final String URL = "jdbc:oracle:thin:@localhost:1521:xe";
private static final String DRIVERCLASSNAME = "oracle.jdbc.OracleDriver";
public static Connection getConnection(){
Connection conn=null;
try {
Class.forName(DRIVERCLASSNAME);
conn=DriverManager.getConnection(URL,USERNAME,PASSWORD);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
public static void destroy(Connection conn){
if(conn!=null){
try {
conn.close();
conn=null;
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
System.out.println(JdbcConnectionUtil.getConnection());
}
}
//数据库操作方法
package com.util;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import com.util.JdbcConnectionUtil;
import com.util.User;
public class MethodDal {
private Connection con;
private PreparedStatement pste;
private ResultSet rs;
// 向用户表表中添加用户
public int insertData(User user) {
init();
int i = -1;
String sql = "insert into puser values(?,?)";
try {
pste = con.prepareStatement(sql);
pste.setString(1, user.getUsername());
pste.setString(2, user.getPassword());
i = pste.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
close();
return i;
}
// 查现有用户名
public String selectName(String name) {
init();
String sql = "select * from puser p where p.pname=?";
try {
pste = con.prepareStatement(sql);
pste.setString(1, name);
rs = pste.executeQuery();
while (rs.next()) {
String pname = rs.getString("pname");
if (pname != null) {
return pname;
}
}
} catch (SQLException e) {
e.printStackTrace();
}
close();
return "no";
}
// 根据姓名查密码
public String selectPwd(String name) {
init();
String sql = "select * from puser p where p.pname=?";
try {
pste = con.prepareStatement(sql);
pste.setString(1, name);
rs = pste.executeQuery();
while (rs.next()) {
String pwd = rs.getString("ppassword");
return pwd;
}
} catch (SQLException e) {
e.printStackTrace();
}
close();
return "wu";
}
// 添加电话本信息
public int insertPhone(PhoneText p) {
init();
int i = -1;
String sql = "insert into phonetext values(tablexulie.nextval,?,?,?,?)";
try {
long l = new Date().getTime();
pste = con.prepareStatement(sql);
pste.setString(1, p.getPuname().trim());
pste.setString(2, p.getPhname().trim());
pste.setString(3, p.getPhone().trim());
pste.setDate(4, new java.sql.Date(l));
i = pste.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
close();
return i;
}
// 查询电话本信息
public List<PhoneText> selectPhone(String text,String uname) {
init();
String sql = "select p.pid,p.phname,p.phone,p.ptime from phonetext p where p.phname like '%" + text
+ "%' or p.phone like '%" + text + "%' and p.puname=? order by p.ptime desc";// '
init();
List<PhoneText> list = new ArrayList<PhoneText>();
try {
pste = con.prepareStatement(sql);
pste.setString(1,uname);
// pste.setString(1,text);
rs = pste.executeQuery();
while (rs.next()) {
PhoneText ph = new PhoneText();
ph.setPid(rs.getInt(1));
ph.setPhname(rs.getString(2));
ph.setPhone(rs.getString(3));
ph.setPtime(rs.getDate(4));
list.add(ph);
}
} catch (SQLException e) {
e.printStackTrace();
}
close();
return list;
}
// 查询所所属用户名的通讯录
public List<PhoneText> selectAllphone(String username) {
String sql = "select pid,phname,phone,ptime from phonetext where puname='"+username+"' order by ptime desc ";
init();
List<PhoneText> list = new ArrayList<PhoneText>();
try {
pste = con.prepareStatement(sql);
rs = pste.executeQuery();
while (rs.next()) {
PhoneText ph = new PhoneText();
ph.setPid(rs.getInt(1));
ph.setPhname(rs.getString(2));
ph.setPhone(rs.getString(3));
ph.setPtime(rs.getDate(4));
list.add(ph);
}
} catch (SQLException e) {
e.printStackTrace();
}
close();
return list;
}
// 更新表中的数据
public int updateData(int id, String phname,String phone) {
init();
int i = -1;
String sql = "update phonetext p set p.phname=?,p.phone=? where p.pid=? ";
try {
pste = con.prepareStatement(sql);
pste.setString(1, phname);
pste.setString(2, phone);
pste.setInt(3, id);
i = pste.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
close();
return i;
}
// 删除记录
public int deletePhone(int id) {
init();
int i = -1;
String sql = "delete phonetext where pid=?";
try {
pste = con.prepareStatement(sql);
pste.setInt(1, id);
i = pste.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
close();
return i;
}
// 查id信息
public List<PhoneText> selectId(int id) {
init();
String sql = "select p.pid,p.phname,p.phone,p.ptime from phonetext p where p.pid=?";
PhoneText ph = new PhoneText();
List<PhoneText> list = new ArrayList<PhoneText>();
try {
pste = con.prepareStatement(sql);
pste.setInt(1, id);
rs = pste.executeQuery();
while (rs.next()) {
ph.setPid(rs.getInt(1));
ph.setPhname(rs.getString(2));
ph.setPhone(rs.getString(3));
ph.setPtime(rs.getDate(4));
list.add(ph);
}
} catch (SQLException e) {
e.printStackTrace();
}
close();
return list;
}
// 初始化链接
public void init() {
con = JdbcConnectionUtil.getConnection();
}
public void close() {
JdbcConnectionUtil.destroy(con);
}
}
//通讯录
package com.util;
import java.sql.Date;
public class PhoneText {
private String puname;
private String phname;
private String phone;
private Date ptime;
public PhoneText(){}
public PhoneText(int pid,String puname,String phname,String phone,Date ptime){
super();
this.pid=pid;
this.puname=puname;
this.phname=phname;
this.phone=phone;
this.ptime=ptime;
}
public int getPid() {
return pid;
}
public void setPid(int pid) {
this.pid = pid;
}
private int pid;
public String getPuname() {
return puname;
}
public void setPuname(String puname) {
this.puname = puname;
}
public String getPhname() {
return phname;
}
public void setPhname(String phname) {
this.phname = phname;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public Date getPtime() {
return ptime;
}
public void setPtime(Date ptime) {
this.ptime = ptime;
}
}
//用户类
package com.util;
public class User {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
com.servlet 各种servlet 处理 注册，登录，添加，删除，修改 的逻辑
//注册逻辑
package com.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.util.MethodDal;
import com.util.User;
/**
* Servlet implementation class ZhueServlet
*/
@WebServlet("/ZhueServlet")
public class ZhueServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public ZhueServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//首先设置可以处理中文
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
//获取传入的数据
String username=request.getParameter("username");
String password=request.getParameter("password");
String password1=request.getParameter("password1");
String realname=request.getParameter("realname");
//调用方法判断传入的参数有没有空，都不为空才可以执行下去
if(checkParam(username,password,password1)){
if(password.equals(password1)){
MethodDal m=new MethodDal();
if(m.selectName(username).equals("no")){//调用方法根据用户名查询，如果返回no说明数据库没有此用户名，可以注册
User user=new User();//实例化用户类并添加信息
user.setUsername(username);
user.setPassword(password);
m.insertData(user);//将实例化的用户传到添加用户的方法
response.sendRedirect("message.jsp?code=1");
}else{
response.sendRedirect("message.jsp?code=4");
}
}else{
response.sendRedirect("message.jsp?code=2");
}
}else{
response.sendRedirect("message.jsp?code=3");
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
//判断传入的参数有没有空的方法，只要有空的就返回false
public boolean checkParam(String... args){//这样传参数代表参数个数不确定，传几个都可以
for(String s : args){
if("".equals(s)||s==null){
return false;
}
}
return true;
}
}
//登录逻辑
package com.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.util.MethodDal;
import com.util.User;
/**
* Servlet implementation class DengluServlet
*/
@WebServlet("/DengluServlet")
public class DengluServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public DengluServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//首先设置可以处理中文
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
//获取传入的数据
String username=request.getParameter("username");
String password=request.getParameter("password");
MethodDal m=new MethodDal();
//调用方法判断传入的参数有没有空，都不为空才可以执行下去
if(checkParam(username,password)){
if(!(m.selectName(username).equals("no"))){//调用方法根据用户名查询，如果返回不为no说明数据库有此用户
if((m.selectPwd(username)).equals(password)){//根据用户名查询密码，并对比输入的密码和数据库的密码
//用request.getSession()创建出客户端的session对象并存内容，用作主页的验证
HttpSession session=request.getSession();
session.setAttribute("name", username);
response.sendRedirect("indextest1.jsp");
}else{
response.sendRedirect("message.jsp?code=4");
}
}else{
response.sendRedirect("message.jsp?code=5");
}
}else{
response.sendRedirect("message.jsp?code=3");
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
//判断传入的参数有没有空的方法，只要有空的就返回false
public boolean checkParam(String... args){//这样传参数代表参数个数不确定，传几个都可以
for(String s : args){
if("".equals(s)||s==null){
return false;
}
}
return true;
}
}
//添加联系人逻辑
package com.servlet;
import java.io.IOException;
import java.util.Date;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.util.MethodDal;
import com.util.PhoneText;
/**
* Servlet implementation class TianjiaServlet
*/
@WebServlet("/TianjiaServlet")
public class TianjiaServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public TianjiaServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
String puname=request.getParameter("puname");
String phname=request.getParameter("phname");
String phone=request.getParameter("phone");
MethodDal m=new MethodDal();
//调用方法判断传入的参数有没有空，都不为空才可以执行下去
if(checkParam(puname,phname,phone)){
MethodDal me=new MethodDal();
PhoneText ph=new PhoneText();
ph.setPhname(phname);
ph.setPhone(phone);
ph.setPuname(puname);
me.insertPhone(ph);
response.sendRedirect("message.jsp?code=7");
}else{
response.sendRedirect("message.jsp?code=3");
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
//判断传入的参数有没有空的方法，只要有空的就返回false
public boolean checkParam(String... args){//这样传参数代表参数个数不确定，传几个都可以
for(String s : args){
if("".equals(s)||s==null){
return false;
}
}
return true;
}
}
//修改联系人数据逻辑
package com.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.util.MethodDal;
/**
* Servlet implementation class UpdateServlet
*/
@WebServlet("/UpdateServlet")
public class UpdateServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public UpdateServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//设置可以处理中文
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
//获取传入的参数
String phname=request.getParameter("phname");
String phone=request.getParameter("phone");
String pid=request.getParameter("pid");
//将获取的ID转换为int类型
int intpid=Integer.parseInt(pid);
MethodDal m=new MethodDal();
//调用修改的方法
int i=m.updateData(intpid, phname, phone);
if(i==-1){
response.sendRedirect("message.jsp?code=10");
}else{
response.sendRedirect("message.jsp?code=9");
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
//删除联系人的逻辑
package com.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.util.MethodDal;
import com.util.User;
/**
* Servlet implementation class DeleteServlet
*/
@WebServlet("/DeleteServlet")
public class DeleteServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public DeleteServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
String pid=request.getParameter("pid");
int intpid=Integer.parseInt(pid);
MethodDal m=new MethodDal();
m.deletePhone(intpid);
response.sendRedirect("message.jsp?code=8");
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
然后是JSP前端页面
注册：
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<form action="ZhueServlet" method="post">
用户名：<input type="text" name="username"><br>
密码：<input type="password" name="password"><br>
确认密码：<input type="password" name="password1"><br>
真实姓名：<input type="text" name="realname"><br>
<input type="submit" value="提交"><br>
</form>
</body>
</html>
登录：
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
<form action="DengluServlet" method="post">
用户名：<input type="text" name="username"><br>
密码：<input type="password" name="password"><br>
<input type="submit" value="提交"><br>
<a href='zhuce.jsp'>注册</a>
</form>
</body>
</html>
主页，显示页：
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8" import="com.util.*,java.util.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>通讯录</title>
<%
//首先要验证有没有登录，如果没有登录跳转到登录界面
Object obj1=session.getAttribute("name");
String uname=(String)obj1;
if (obj1 == null) {
response.sendRedirect("denglu.jsp");
}
%>
</head>
<body >
<h1 style="font-size:38px;">欢迎</h1>
<a style="font-size:26px;" href="">查看联系人</a>
<a style="font-size:26px;" href="indextianjia.jsp">添加</a>
<form action="indexselect.jsp" method="post" >
<input type="text" name="select"/>
<input type="submit" value="查询(跳转页面)">
</form>
<table border="1" align="center" width="60%">
<tr>
<th>客户编码</th>
<th>姓名</th>
<th>电话</th>
<th>添加时间</th>
<th>编辑</th>
<th>删除</th>
</tr>
<%
MethodDal m=new MethodDal();
List<PhoneText> list=m.selectAllphone(uname);
if(list!=null){
for(PhoneText l: list ){
out.print("<tr>");
out.print("<td>"+l.getPid()+"</td>");
out.print("<td>"+l.getPhname()+"</td>");
out.print("<td>"+l.getPhone()+"</td>");
out.print("<td>"+l.getPtime()+"</td>");
out.print("<td><a href='indexupdate.jsp?pid="+l.getPid()+"'>编辑</td><br>");
out.print("<td><a href='DeleteServlet?pid="+l.getPid()+"'>删除</td><br>");
out.print("</tr>");
}
}
%>
</table>
</body>
</html>
<script>
</script>
添加联系人：
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8" import="com.util.*,java.util.*" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>list.jsp</title>
</head>
<body >
<h1 style="font-size:38px;">欢迎</h1>
<a style="font-size:26px;" href="indextest1.jsp">查看联系人</a>
<a style="font-size:26px;" href="indextianjia">添加</a>
<form action="TianjiaServlet" method="post">
用户名：<input type="text" name="puname" value="
<% Object obj1=session.getAttribute("name");
String uname=(String)obj1;
out.print(uname);
%>"><br>
联系人姓名：<input type="text" name="phname"><br>
联系人电话：<input type="text" name="phone"><br>
<input type="submit" value="提交"><br>
</form>
</table>
</body>
</html>
查询页面：
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8" import="com.util.*,java.util.*"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>list.jsp</title>
</head>
<body>
<div id="select">
<h1 style="font-size: 38px;">查询结果：</h1>
<a style="font-size: 26px;"> <a style="font-size: 26px;"
href="indextianjia.jsp">添加</a>
<table border="1" align="center" width="60%">
<tr>
<th>客户编码</th>
<th>姓名</th>
<th>电话</th>
<th>添加时间</th>
<th>编辑</th>
</tr>
<%
//获取用户名用来筛选
Object obj1 = session.getAttribute("name");
String uname = (String) obj1;
String selecttext = request.getParameter("select");
MethodDal m = new MethodDal();
List<PhoneText> list = m.selectPhone(selecttext, uname);
if (list != null) {
for (PhoneText l : list) {
out.print("<tr>");
out.print("<td>" + l.getPid() + "</td>");
out.print("<td>" + l.getPhname() + "</td>");
out.print("<td>" + l.getPhone() + "</td>");
out.print("<td>" + l.getPtime() + "</td>");
out.print("<td> </td>" + "<br>");
out.print("</tr>");
}
}
%>
</table>
</div>
</body>
</html>
第二版本：
model包，用户类，通讯录类
package com.hanqi.maya.model;
import java.io.Serializable;
import java.util.Date;
/**
* 联系人实体类
*/
public class ContactBook implements Serializable {
private static final long serialVersionUID = 1L;
/**
* 主键
*/
private Integer id;
/**
* 联系人姓名
*/
private String name;
/**
* 电话号码
*/
private String tel;
/**
* 性别
*/
private String sex;
/**
* 添加时间
*/
private Date addtime;
/**
* 分组信息
*/
private String tcgroup;
/**
* 所属用户
*/
private String username;
public ContactBook() {
super();
}
public ContactBook(String name, String tel, String sex, String tcgroup) {
super();
this.name = name;
this.tel = tel;
this.sex = sex;
this.tcgroup = tcgroup;
}
public ContactBook(Integer id, String name, String tel, String sex, Date addtime, String tcgroup, String username) {
super();
this.id = id;
this.name = name;
this.tel = tel;
this.sex = sex;
this.addtime = addtime;
this.tcgroup = tcgroup;
this.username = username;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public Date getAddtime() {
return addtime;
}
public void setAddtime(Date addtime) {
this.addtime = addtime;
}
public String getTcgroup() {
return tcgroup;
}
public void setTcgroup(String tcgroup) {
this.tcgroup = tcgroup;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
@Override
public String toString() {
return "ContactBook [id=" + id + ", name=" + name + ", tel=" + tel + ", sex=" + sex + ", addtime=" + addtime
+ ", tcgroup=" + tcgroup + ", username=" + username + "]";
}
}
package com.hanqi.maya.model;
import java.io.Serializable;
import java.util.Date;
/**
* 用户实体类
*/
public class ContactUser implements Serializable {
private static final long serialVersionUID = 1L;
/**
* 用户名
*/
private String username;
/**
* 用户密码
*/
private String password;
/**
* 姓名
*/
private String realname;
/**
* 注册时间
*/
private Date createtime;
public ContactUser() {
}
public ContactUser(String username, String password, String realname, Date createtime) {
this.username = username;
this.password = password;
this.realname = realname;
this.createtime = createtime;
}
public ContactUser(String username, String password, String realname) {
this.username = username;
this.password = password;
this.realname = realname;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getRealname() {
return realname;
}
public void setRealname(String realname) {
this.realname = realname;
}
public Date getCreatetime() {
return createtime;
}
public void setCreatetime(Date createtime) {
this.createtime = createtime;
}
}
util包 包含数据库设置，日期转换工具，数据库操作
package com.hanqi.maya.util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
/**
* 数据库驱动连接类
* @author ZBK
*/
public class DBHelper {
/**
* 数据库用户名
*/
public static final String USERNAME = "test";
/**
* 数据库密码
*/
public static final String PASSWORD = "test";
/**
* 数据库驱动类
*/
public static final String DRIVER = "oracle.jdbc.OracleDriver";
/**
* 数据库地址URL
*/
public static final String URL = "jdbc:oracle:thin:@localhost:1521:xe";
/**
* 获取数据库连接
* @return
*/
public static Connection getConnection() {
Connection conn = null;
try {
Class.forName(DRIVER);
conn = DriverManager.getConnection(URL, USERNAME, PASSWORD);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return conn;
}
/**
* 释放资源
* @param conn 数据库连接对象
* @param sm Statement对象
* @param rs ResultSet结果集对象
*/
public static void destroy(Connection conn, Statement sm, ResultSet rs) {
if (conn != null) {
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
conn = null;
}
if (sm != null) {
try {
sm.close();
} catch (SQLException e) {
e.printStackTrace();
}
sm = null;
}
if (rs != null) {
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
rs = null;
}
}
/**
* 验证前台传入的参数是否为空
* @param args
* @return
*/
public static boolean checkParam(String... args) {
for (String s : args) {
if (s == null || s.trim().length() < 1) {
return false;
}
}
return true;
}
}
package com.hanqi.maya.util;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* 日期转换器
*/
public class DateConvertor {
private static SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
/**
* 将字符串转换成Date类型
* @param str
* @return
*/
public static Date putString2Date(String str) {
Date date = null;
if(str.trim().length()<=0) {
return null;
}
try {
date = new Date(sdf.parse(str).getTime());
} catch (ParseException e) {
e.printStackTrace();
}
return date;
}
/**
* 将日期类型转换成字符串
* @param dd
* @return
*/
public static String putDate2String(Date dd) {
return sdf.format(dd);
}
}
servelt处理逻辑
登录逻辑：
package com.hanqi.maya.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.hanqi.maya.model.ContactUser;
import com.hanqi.maya.util.DBHelper;
import com.hanqi.maya.util.DataBaseMethodDal;
/**
* Servlet implementation class LoginServlet
*/
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public LoginServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
String username = request.getParameter("username");
String password = request.getParameter("password");
DataBaseMethodDal dbmd = new DataBaseMethodDal();
if (DBHelper.checkParam(username, password)) {
ContactUser user = dbmd.selectUser(username, password);
if (user != null) {
request.getSession().setAttribute("currentUser", user);
r(response, "ShowContactInfoServlet", -1);
} else {
r(response, "message.jsp", 5);
}
} else {
r(response, "message.jsp", 1);
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
public static void r(HttpServletResponse response, String page, int code) {
try {
response.sendRedirect(page + "?code=" + code);
} catch (IOException e) {
e.printStackTrace();
}
}
}
注册逻辑
package com.hanqi.maya.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.hanqi.maya.model.ContactUser;
import com.hanqi.maya.util.DBHelper;
import com.hanqi.maya.util.DataBaseMethodDal;
/**
* Servlet implementation class RegisterServlet
*/
@WebServlet("/RegisterServlet")
public class RegisterServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public RegisterServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
String username = request.getParameter("username");
String password = request.getParameter("password");
String password1 = request.getParameter("password1");
String realname = request.getParameter("realname");
DataBaseMethodDal dbmd = new DataBaseMethodDal();
if(DBHelper.checkParam(username, password, password1)) {
if(password.equals(password1)) {
ContactUser cu = new ContactUser(username, password, realname);
int a = dbmd.insertUser(cu);
if(a > 0) {
r(response, "message.jsp", 3);
} else {
r(response, "message.jsp", 4);
}
} else {
r(response, "message.jsp", 2);
}
} else {
r(response, "message.jsp",1);
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
public static void r(HttpServletResponse response, String page, int code) {
try {
response.sendRedirect(page+"?code="+code);
} catch (IOException e) {
e.printStackTrace();
}
}
}
添加和修改
package com.hanqi.maya.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.hanqi.maya.model.ContactBook;
import com.hanqi.maya.model.ContactUser;
import com.hanqi.maya.util.DBHelper;
import com.hanqi.maya.util.DataBaseMethodDal;
/**
* Servlet implementation class InsertContactBookServlet
*/
@WebServlet("/InsertContactBookServlet")
public class InsertContactBookServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public InsertContactBookServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
ContactUser cu = (ContactUser) request.getSession().getAttribute("currentUser");
String id = request.getParameter("id");
String cname = request.getParameter("cname");
String tel = request.getParameter("tel");
String sex = request.getParameter("sex");
String tcgroup = request.getParameter("tcgroup");
DataBaseMethodDal dbmd = new DataBaseMethodDal();
ContactBook cb = new ContactBook(cname, tel, sex, tcgroup);
if (id == null || id.trim().length() <= 0) {
if (DBHelper.checkParam(cname, tel, sex, tcgroup)) {
int a = dbmd.insertBook(cb, cu.getUsername());
if (a > 0) {
r(response, "ShowContactInfoServlet", 1);
} else {
r(response, "message.jsp", 4);
}
} else {
r(response, "message.jsp", 1);
}
} else {
cb.setId(Integer.parseInt(id));
int a = dbmd.updateBook(cb, cu.getUsername());
if (a > 0) {
r(response, "ShowContactInfoServlet", 1);
} else {
r(response, "message.jsp", 4);
}
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
public static void r(HttpServletResponse response, String page, int code) {
try {
response.sendRedirect(page + "?code=" + code);
} catch (IOException e) {
e.printStackTrace();
}
}
}
显示
package com.hanqi.maya.servlet;
import java.io.IOException;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.hanqi.maya.model.ContactBook;
import com.hanqi.maya.model.ContactUser;
import com.hanqi.maya.util.DataBaseMethodDal;
/**
* Servlet implementation class ShowContactInfoServlet
*/
@WebServlet("/ShowContactInfoServlet")
public class ShowContactInfoServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public ShowContactInfoServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
DataBaseMethodDal dbmd = new DataBaseMethodDal();
ContactUser cu = (ContactUser)request.getSession().getAttribute("currentUser");
String isSearch = request.getParameter("isSearch");
ContactBook cb = null;
if(isSearch!=null&&"do".equals(isSearch)) {
String cname = request.getParameter("cname");
String tel = request.getParameter("tel");
String sex = request.getParameter("sex");
String tcgroup = request.getParameter("tcgroup");
cb = new ContactBook(cname, tel, sex, tcgroup);
}
if(cu!=null) {
List<ContactBook> cbList = dbmd.selectAllContactInfo(cb, cu.getUsername());
if(cbList!=null) {
request.getSession().setAttribute("cbList", cbList);
}
r(response,"index.jsp",0);
} else {
r(response,"message.jsp",0);
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
public static void r(HttpServletResponse response, String page, int code) {
try {
response.sendRedirect(page + "?code=" + code);
} catch (IOException e) {
e.printStackTrace();
}
}
}
package com.hanqi.maya.util;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import com.hanqi.maya.model.ContactBook;
import com.hanqi.maya.model.ContactUser;
/**
* 调用数据库连接进行数据操作的类
*
*/
public class DataBaseMethodDal {
private Connection conn;
private PreparedStatement ps;
private ResultSet rs;
/**
* 初始化数据库链接
*/
public void init(String sql) {
conn = DBHelper.getConnection();
try {
ps = conn.prepareStatement(sql);
} catch (SQLException e) {
e.printStackTrace();
}
}
/**
* 注册用户信息
*
* @param cu
* @return
*/
public int insertUser(ContactUser cu) {
String sql = "insert into tc_user values(?,?,?,sysdate)";
init(sql);
int a = -1;
try {
ps.setString(1, cu.getUsername());
ps.setString(2, cu.getPassword());
ps.setString(3, cu.getRealname());
a = ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
return a;
}
public ContactUser selectUser(String username, String password) {
String sql = "select * from tc_user t where t.username=? and t.password=?";
init(sql);
ContactUser user = null;
try {
ps.setString(1, username);
ps.setString(2, password);
rs = ps.executeQuery();
while (rs.next()) {
user = new ContactUser(rs.getString("username"), rs.getString("password"), rs.getString("realname"),
rs.getDate("createtime"));
}
} catch (SQLException e) {
e.printStackTrace();
}
return user;
}
public List<ContactBook> selectAllContactInfo(ContactBook book, String username) {
String sqlplus = "";
if (book != null) {
if (book.getName().trim().length() > 0) {
sqlplus += " and t.cname like '%" + book.getName() + "%' ";
}
if (book.getTel().trim().length() > 0) {
sqlplus += " and t.tel like '%" + book.getTel() + "%' ";
}
if (book.getSex().trim().length() > 0) {
sqlplus += " and t.sex = '" + book.getSex() + "' ";
}
if (book.getTcgroup().trim().length() > 0) {
sqlplus += " and t.tcgroup = '" + book.getTcgroup() + "' ";
}
}
String sql = "select * from TC_CONTACT t where t.username = ?" + sqlplus;
System.out.println(sql);
init(sql);
List<ContactBook> cbList = null;
try {
ps.setString(1, username);
rs = ps.executeQuery();
if (rs != null) {
cbList = new ArrayList<ContactBook>();
while (rs.next()) {
ContactBook cb = new ContactBook(rs.getInt("id"), rs.getString("cname"), rs.getString("tel"),
rs.getString("sex"), rs.getTimestamp("addtime"), rs.getString("tcgroup"),
rs.getString("username"));
cbList.add(cb);
}
}
} catch (SQLException e) {
e.printStackTrace();
}
return cbList;
}
public int insertBook(ContactBook cb, String username) {
String sql = "insert into TC_CONTACT values(test.nextval, ?,?,?,sysdate,?,?)";
init(sql);
int a = -1;
try {
ps.setString(1, cb.getName());
ps.setString(2, cb.getTel());
ps.setString(3, cb.getSex());
ps.setString(4, cb.getTcgroup());
ps.setString(5, username);
a = ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
return a;
}
public int delContactBook(String ids) {
String sql = "delete TC_CONTACT t where t.id in (" + ids + ")";
init(sql);
int a = -1;
try {
a = ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
return a;
}
public int updateBook(ContactBook cb, String username) {
String sql = "update TC_CONTACT t set t.cname=?, t.sex=?, t.tel=?, t.tcgroup=? "
+ "where t.username=? and t.id=?";
init(sql);
int a = -1;
try {
ps.setString(1, cb.getName());
ps.setString(2, cb.getSex());
ps.setString(3, cb.getTel());
ps.setString(4, cb.getTcgroup());
ps.setString(5, username);
ps.setInt(6, cb.getId());
a = ps.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
return a;
}
}
删除
package com.hanqi.maya.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.hanqi.maya.util.DataBaseMethodDal;
/**
* Servlet implementation class DelContactBookServlet
*/
@WebServlet("/DelContactBookServlet")
public class DelContactBookServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public DelContactBookServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String ids = request.getParameter("ids");
if (ids != null && ids.trim().length() > 0) {
DataBaseMethodDal dbmd = new DataBaseMethodDal();
int a = dbmd.delContactBook(ids);
if (a > 0) {
response.sendRedirect("ShowContactInfoServlet");
} else {
response.sendRedirect("message.jsp?code=6");
}
} else {
response.sendRedirect("message.jsp?code=4");
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
JSP页面：
注册页面：
-
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="RegisterServlet" method="post">
<table>
<tr>
<td>用户名: </td>
<td><input type="text" name="username" /></td>
</tr>
<tr>
<td>密码: </td>
<td><input type="text" name="password" /></td>
</tr>
<tr>
<td>确认密码: </td>
<td><input type="text" name="password1" /></td>
</tr>
<tr>
<td>姓名: </td>
<td><input type="text" name="realname" /></td>
</tr>
<tr>
<td><input type="submit" value="注册" /></td>
<td><a href="login.jsp">返回登陆</a></td>
</tr>
</table>
</form>
</body>
</html>
登录页面：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="LoginServlet" method="post">
<table>
<tr>
<td>用户名: </td>
<td><input type="text" name="username" /></td>
</tr>
<tr>
<td>密码: </td>
<td><input type="text" name="password" /></td>
</tr>
<tr>
<td><input type="submit" value="登录" /></td>
<td><a href="register.jsp">前往注册</a></td>
</tr>
</table>
</form>
</body>
</html>
主页：
主页有两个from表单，一个用来进行添加或者修改，另一个用来查询
进行修改和查询的表单有一个隐藏域，name是id，添加的时候id是空的，后台判断id是空的就进行添加，点击修改会触发点击事件 loadForm(id, cname, tel, sex, tcgroup) 然后通过 var f = document.getElementById("addOrUpdateForm"); f.id.value=id; 将信息获取到表单中，然后进行修改
在查询的表单中，有一个隐藏域，如果点击查询，隐藏域会被提交，后台就能接收到它的参数说明是查询操作，如果不能，说明没有点击查询，是第一次登录，后台接收到参数之后，进行判断，如果是查询，
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@ page import="com.hanqi.maya.model.ContactUser"%>
<%@ page import="com.hanqi.maya.model.ContactBook"%>
<%@ page import="java.util.ArrayList"%>
<%@ page import="com.hanqi.maya.util.DateConvertor"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<%
ArrayList<ContactBook> list = null;
ContactUser cu = (ContactUser) session.getAttribute("currentUser");
String realname = "没有登录";
if (cu == null) {
response.sendRedirect("message.jsp?code=0");
} else {
realname = cu.getRealname();
list = (ArrayList<ContactBook>) session.getAttribute("cbList");
}
%>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Insert title here</title>
</head>
<body>
欢迎, [<%=realname%>]
<hr>
<form id="addOrUpdateForm" action="InsertContactBookServlet" method="post">
<input type="hidden" name="id" />
<table>
<tr>
<td>联系人名称:</td>
<td><input type="text" name="cname" /></td>
</tr>
<tr>
<td>电话:</td>
<td><input type="text" name="tel" /></td>
</tr>
<tr>
<td>性别:</td>
<td><select name="sex">
<option value="">未选择</option>
<option value="男">男</option>
<option value="女">女</option>
<option value="其他">其他</option>
</select></td>
</tr>
<tr>
<td>分组:</td>
<td><select name="tcgroup">
<option value="">未选择</option>
<option value="同事">同事</option>
<option value="朋友">朋友</option>
<option value="同学">同学</option>
<option value="家人">家人</option>
</select></td>
</tr>
<tr>
<td><input type="submit" value="保存"></td>
<td><input type="button" value="重置" /></td>
</tr>
</table>
</form>
<hr>
<h2>查询联系人</h2>
<form action="ShowContactInfoServlet" method="post">
<input type="hidden" name="isSearch" value="do" />
联系人名称:<input type="text" name="cname" />
电话:<input type="text" name="tel" />
性别:
<select name="sex">
<option value="">未选择</option>
<option value="男">男</option>
<option value="女">女</option>
<option value="其他">其他</option>
</select>
分组: <select name="tcgroup">
<option value="">未选择</option>
<option value="同事">同事</option>
<option value="朋友">朋友</option>
<option value="同学">同学</option>
<option value="家人">家人</option>
</select>
<input type="submit" value="查询" />
<input type="button" id="btn_delMultiple" value="删除选中记录" onclick="confirmMultiDel()" />
</form>
<hr>
<%
if (list != null && list.size() > 0) {
out.print("<table style='text-align:center;' width='70%' cellpadding='0' cellspacing='0' border='1'>");
out.print("<tr><th>联系人姓名</th><th>电话号码</th><th>性别</th><th>分组</th><th>添加时间</th><th>管理</th><th><input type='checkbox' id='leader' onclick='getMultiDel()'></th></tr>");
for (ContactBook c : list) {
out.print("<tr>");
out.print("<td>" + c.getName() + "</td><td>" + c.getTel() + "</td><td>" + c.getSex() + "</td><td>"
+ c.getTcgroup() + "</td><td>" + DateConvertor.putDate2String(c.getAddtime())
+ "</td><td><a href='DelContactBookServlet?id="+c.getId()+"' onclick='return confirmDel()'>删除</a> <a href='javascript:void(0)' onclick='loadForm(\""+c.getId()+"\",\""+c.getName()+"\", \""+c.getTel()+"\", \""+c.getSex()+"\", \""+c.getTcgroup()+"\")'>修改</a></td><td><input value='"+c.getId()+"' class='select' type='checkbox'></td>");
out.print("</tr>");
}
out.print("</table>");
} else {
out.print("没有任何记录 !");
}
%>
<script type="text/javascript">
function confirmDel() {
var r = confirm("确定删除吗?");
return r;
}
function getMultiDel() {
var c = document.getElementById("leader");
var r = c.checked;
var checks = document.getElementsByClassName("select");
for(var i=0;i<checks.length;i++) {
checks[i].checked = r;
}
}
function loadForm(id, cname, tel, sex, tcgroup) {
var f = document.getElementById("addOrUpdateForm");
f.id.value=id;
f.cname.value = cname;
f.tel.value = tel;
f.sex.value = sex;
f.tcgroup.value = tcgroup;
}
function confirmMultiDel() {
var checks = document.getElementsByClassName("select");
var arrayObjs = [];
for(var j=0;j<checks.length;j++) {
if(checks[j].checked) {
arrayObjs.push(checks[j].value);
}
}
var r1 = confirm("选中了"+arrayObjs.length+"条数据, 确定要删除吗 ?");
if(r1) {
window.location.href="DelContactBookServlet?ids="+arrayObjs;
}
}
</script>
</body>
</html>
提示页：
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
String code = request.getParameter("code");
if ("0".equals(code)) {
out.print("<h1>请先登录 !</h1>");
}
if ("1".equals(code)) {
out.print("<h1>输入正确的参数 !</h1>");
}
if ("2".equals(code)) {
out.print("<h1>两次输入的密码不一致 !</h1>");
}
if ("3".equals(code)) {
out.print("<h1>注册成功 !</h1>");
}
if ("4".equals(code)) {
out.print("<h1>后台出现异常 !</h1>");
}
if ("5".equals(code)) {
out.print("<h1>用户不存在或者密码错误 !</h1>");
}
if ("6".equals(code)) {
out.print("<h1>删除联系人信息失败 !</h1>");
}
%>
<hr>
<a href="login.jsp">登录</a>
<a href="register.jsp">注册</a>
<a href="ShowContactInfoServlet">前往主页</a>
</body>
</html>
总结：
1.可以在一个页面设置多个表单进行不同的操作
2.可以设置点击事件，然后使用 var f = document.getElementById("addOrUpdateForm"); f.id.value=id; 将信息获取到指定id 的表单或者表格中
3.
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