动态网站项目（Dynamic Web Project）CRUD(增删改查)功能的实现(mvc(五层架构)+jdbc+servlet+tomcat7.0+jdk1.8)，前端使用JSP+JSTL+EL组合
代码分享链接
https://pan.baidu.com/s/1UM0grvpttHW9idisiqa6rA 提取码：hx7c
图示
项目结构
1.SelectAllUser.jsp
<%@ 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>
<a href="SelectAllUserServlet">查询所有用户</a>
</body>
</html>
2.AddUser.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!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>
<a href="Add.jsp">增加用户</a>
<table border="1px">
<tr>
<td>用户ID</td>
<td>用户姓名</td>
<td>用户密码</td>
<td>用户昵称</td>
<td>用户性别</td>
<td>用户年龄</td>
<td>用户头像</td>
<td>操作</td>
</tr>
<c:forEach var="xyz" items="${requestScope.user }">
<tr>
<td>${xyz.userid }</td>
<td>${xyz.username }</td>
<td>${xyz.password }</td>
<td>${xyz.nikename }</td>
<td>${xyz.sex }</td>
<td>${xyz.age }</td>
<td><img src="${xyz.image }" alt="图片加载失败" height="50px" weight="50px"/></td>
<td>
<a href="UpdateSelectUserByIdServlet?userid=${xyz.userid }">修改</a>
<a href="DeleteUserServlet?userid=${xyz.userid }">删除</a>
</td>
</tr>
</c:forEach>
</table>
<!-- 分页 -->
一共${num }页
<a href=""#>首页</a>
<a href=""#>上一页</a>
<a href=""#>下一页</a>
<a href=""#>尾页</a>
</body>
</html>
3.Add.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="AddUserServle" method="post">
用户名<input type="text" name="username"><br>
密码<input type="text" name="password"><br>
昵称<input type="text" name="nikename"><br>
性别<input type="text" name="sex"><br>
年龄<input type="text" name="age"><br>
头像<input type="file" name="image"><br>
<input type="submit" value="提交">
</form>
</body>
</html>
4.UpdateUser.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body> <form action="UpdateUserServlet" method="post" >
用户id:${user.userid }
<input type="hidden" name="userid" value="${user.userid }"><br>
用户名<input type="text" name="username" value="${user.username }"><br>
密码<input type="text" name="password" value="${user.password }"><br>
昵称<input type="text" name="nikename" value="${user.nikename }"><br>
性别<input type="text" name="sex" value="${user.sex }"><br>
年龄<input type="text" name="age" value="${user.age }"><br>
头像<input type="file" name="image" value="${user.image }"><br>
<input type="submit" value="提交">
</form> </body>
</html>
5.(com.icss.vo)User.java
/**
* <p>Title: User.java</p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2020</p>
* <p>Company: </p>
* @author liuxin
* @date 2020年3月27日
* @version 1.0
*/
package com.icss.vo; /**
* <p>Title: User</p>
* <p>Description: </p>
* @author liuxin
* @date 2020年3月27日
*/
public class User {
//数据封装
private int userid;
private String username;
private String password;
private String nikename;
private String sex;
private int age;
private String image;
/**
* @return the userid
*/
public int getUserid() {
return userid;
}
/**
* @param userid the userid to set
*/
public void setUserid(int userid) {
this.userid = userid;
}
/**
* @return the username
*/
public String getUsername() {
return username;
}
/**
* @param username the username to set
*/
public void setUsername(String username) {
this.username = username;
}
/**
* @return the password
*/
public String getPassword() {
return password;
}
/**
* @param password the password to set
*/
public void setPassword(String password) {
this.password = password;
}
/**
* @return the nikename
*/
public String getNikename() {
return nikename;
}
/**
* @param nikename the nikename to set
*/
public void setNikename(String nikename) {
this.nikename = nikename;
}
/**
* @return the sex
*/
public String getSex() {
return sex;
}
/**
* @param sex the sex to set
*/
public void setSex(String sex) {
this.sex = sex;
}
/**
* @return the age
*/
public int getAge() {
return age;
}
/**
* @param age the age to set
*/
public void setAge(int age) {
this.age = age;
}
/**
* @return the image
*/
public String getImage() {
return image;
}
/**
* @param image the image to set
*/
public void setImage(String image) {
this.image = image;
} }
6.(com.icss.util)DBUtil.java
package com.icss.util; import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException; public class DBUtil {
public static Connection connection;
public static Connection getConnection() throws ClassNotFoundException, SQLException{
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection connection = DriverManager.getConnection
("jdbc:oracle:thin:@localhost:1521:XE","数据库名","数据库密码");
return connection;
} }
7.(com.icss.dao)UserDao.java
/**
* <p>Title: UserDao.java</p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2020</p>
* <p>Company: </p>
* @author liuxin
* @date 2020年3月27日
* @version 1.0
*/
package com.icss.dao; import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList; import org.apache.tomcat.dbcp.dbcp.DbcpException; import com.icss.util.DBUtil;
import com.icss.vo.User; import javafx.css.PseudoClass; /**
* <p>Title: UserDao</p>
* <p>Description: </p>
* @author liuxin
* @date 2020年3月27日
*/
public class UserDao {
//查询所有用户
public ArrayList<User> selectAllUserDao() throws ClassNotFoundException, SQLException{
PreparedStatement ps = DBUtil.getConnection().prepareStatement
("select * from user_0327");
ResultSet rs = ps.executeQuery();
ArrayList<User> al = new ArrayList<User>();
while(rs.next()){
User user = new User();
user.setUserid(rs.getInt(1));
user.setUsername(rs.getString(2));
user.setPassword(rs.getString(3));
user.setNikename(rs.getString(4));
user.setSex(rs.getString(5));
user.setAge(rs.getInt(6));
user.setImage(rs.getString(7));
al.add(user);
}
ps.close();
rs.close();
DBUtil.getConnection().close();
return al;
}
//增加用户
public void addUserDao(User user) throws ClassNotFoundException, SQLException{
PreparedStatement ps = DBUtil.getConnection().prepareStatement
("insert into user_0327 values(user0327_seq.nextval,?,?,?,?,?,?)");
ps.setString(1, user.getUsername());
ps.setString(2, user.getPassword());
ps.setString(3, user.getNikename());
ps.setString(4, user.getSex());
ps.setInt(5, user.getAge());
//这里先将头像照片定死，没有使用上传图片
ps.setString(6, "image/"+user.getImage());
ps.executeUpdate();
ps.close();
DBUtil.getConnection().close();
}
//删除用户
public void deleteUserDao(int id) throws ClassNotFoundException, SQLException{
PreparedStatement ps = DBUtil.getConnection().prepareStatement
("delete from user_0327 where userid=?");
ps.setInt(1, id);
ps.executeQuery();
ps.close();
DBUtil.getConnection().close();
}
//修改之查询
public User updateSelectUserByIdDao(int id) throws ClassNotFoundException, SQLException{
PreparedStatement ps = DBUtil.getConnection().prepareStatement
("select * from user_0327 where userid=?");
ps.setInt(1, id);
ResultSet rs = ps.executeQuery();
User user = new User();
while(rs.next()){
user.setUserid(rs.getInt(1));
user.setUsername(rs.getString(2));
user.setPassword(rs.getString(3));
user.setNikename(rs.getString(4));
user.setSex(rs.getString(5));
user.setAge(rs.getInt(6));
user.setImage(rs.getString(7));
}
ps.close();
rs.close();
DBUtil.getConnection().close();
return user;
}
//修改之修改
public void updateUserByIdDao(User user) throws ClassNotFoundException, SQLException{
PreparedStatement ps = DBUtil.getConnection().prepareStatement
("update user_0327 set username=?,password=?,nikename=?,sex=?,age=?,image=? where userid =?");
ps.setString(1, user.getUsername());
ps.setString(2, user.getPassword());
ps.setString(3, user.getNikename());
ps.setString(4, user.getSex());
ps.setInt(5, user.getAge());
ps.setString(6, "image"+user.getImage());
ps.setInt(7, user.getUserid());
ps.executeUpdate();
ps.close();
DBUtil.getConnection().close();
}
//获得分页数量
public int getTotalPageDao(int pagesize) throws ClassNotFoundException, SQLException{
PreparedStatement ps = DBUtil.getConnection().prepareStatement
("select count(userid) c from user_0327");
ResultSet rs = ps.executeQuery();
int total =0;
if(rs.next()){
int num = rs.getInt("c");
total = num%pagesize==0?num/pagesize:num/pagesize+1;
}
ps.close();
DBUtil.getConnection().close();
return total;
}
}
8.(com.icss.service)UserService.java
/**
* <p>Title: UserService.java</p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2020</p>
* <p>Company: </p>
* @author liuxin
* @date 2020年3月27日
* @version 1.0
*/
package com.icss.service; import java.sql.SQLException;
import java.util.ArrayList; import com.icss.dao.UserDao;
import com.icss.vo.User; /**
* <p>Title: UserService</p>
* <p>Description: </p>
* @author liuxin
* @date 2020年3月27日
*/
public class UserService {
public ArrayList<User> selectAllUserService() throws ClassNotFoundException, SQLException{
UserDao user = new UserDao();
return user.selectAllUserDao();
}
public void addUserService(User user) throws ClassNotFoundException, SQLException{
UserDao ud = new UserDao();
ud.addUserDao(user);
}
public void deleteUserService(int id) throws ClassNotFoundException, SQLException{
UserDao ud = new UserDao();
ud.deleteUserDao(id);
}
public User updateSelectUserByIdService(int id) throws ClassNotFoundException, SQLException{
UserDao ud = new UserDao();
return ud.updateSelectUserByIdDao(id);
}
public void updateUserByIdService(User user) throws ClassNotFoundException, SQLException{
UserDao ud = new UserDao();
ud.updateUserByIdDao(user);
}
public int getTotalPageService(int pagesize) throws ClassNotFoundException, SQLException{
UserDao ud = new UserDao();
return ud.getTotalPageDao(pagesize);
} }
9.(com.icss.controller)SelectAllUserServlet.java
package com.icss.controller; import java.io.IOException;
import java.sql.SQLException;
import java.util.ArrayList; 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.icss.service.UserService;
import com.icss.vo.User; /**
* Servlet implementation class SelectAllUserServlet
*/
@WebServlet("/SelectAllUserServlet")
public class SelectAllUserServlet extends HttpServlet {
private static final long serialVersionUID = 1L; /**
* @see HttpServlet#HttpServlet()
*/
public SelectAllUserServlet() {
super();
// TODO Auto-generated constructor stub
} /**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
} /**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
//接受请求
//处理请求
UserService us = new UserService();
try {
//************分页数**************
int pagesize = 3;
int num = us.getTotalPageService(pagesize);
System.out.println(num);
request.setAttribute("num", num);
//************分页数**************
ArrayList<User> user = us.selectAllUserService();
request.setAttribute("user", user);
request.getRequestDispatcher("AddUser.jsp").forward(request, response);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} } }
10.(com.icss.controller)AddUserServlet.java
package com.icss.controller; import java.io.IOException;
import java.sql.SQLException; 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.icss.service.UserService;
import com.icss.vo.User; /**
* Servlet implementation class AddUserServle
*/
@WebServlet("/AddUserServle")
public class AddUserServle extends HttpServlet {
private static final long serialVersionUID = 1L; /**
* @see HttpServlet#HttpServlet()
*/
public AddUserServle() {
super();
// TODO Auto-generated constructor stub
} /**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
} /**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
//接受请求
User user = new User();
//String user2 = request.getParameter("username");
user.setUsername(request.getParameter("username"));
///System.out.println(user2);
user.setPassword(request.getParameter("password"));
user.setNikename(request.getParameter("nikename"));
user.setSex(request.getParameter("sex"));
user.setAge(Integer.parseInt(request.getParameter("age")));
user.setImage(request.getParameter("image"));
//处理请求
UserService us = new UserService();
try { us.addUserService(user);
request.getRequestDispatcher("SelectAllUserServlet").forward(request, response);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} }
11.(com.icss.controller)UpdateSelectUserByIdServlet.java
package com.icss.controller; import java.io.IOException;
import java.sql.SQLException; 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.icss.service.UserService;
import com.icss.vo.User; /**
* Servlet implementation class UpdateSelectUserByIdServlet
*/
@WebServlet("/UpdateSelectUserByIdServlet")
public class UpdateSelectUserByIdServlet extends HttpServlet {
private static final long serialVersionUID = 1L; /**
* @see HttpServlet#HttpServlet()
*/
public UpdateSelectUserByIdServlet() {
super();
// TODO Auto-generated constructor stub
} /**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
} /**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
//接受数据
int id = Integer.parseInt(request.getParameter("userid"));
//System.out.println(id);
//处理数据
UserService us = new UserService();
try {
User user = us.updateSelectUserByIdService(id);
request.setAttribute("user", user);
request.getRequestDispatcher("UpdateUser.jsp").forward(request, response);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} }
12.(com.icss.controller)UpdateUserServlet.java
package com.icss.controller; import java.io.IOException;
import java.sql.SQLException; 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.icss.service.UserService;
import com.icss.vo.User; /**
* Servlet implementation class UpdateUserServlet
*/
@WebServlet("/UpdateUserServlet")
public class UpdateUserServlet extends HttpServlet {
private static final long serialVersionUID = 1L; /**
* @see HttpServlet#HttpServlet()
*/
public UpdateUserServlet() {
super();
// TODO Auto-generated constructor stub
} /**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
} /**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
//接受数据
User user = new User();
user.setUserid(Integer.parseInt(request.getParameter("userid")));
user.setUsername(request.getParameter("username"));
user.setPassword(request.getParameter("password"));
user.setNikename(request.getParameter("nikename"));
user.setSex(request.getParameter("sex"));
user.setAge(Integer.parseInt(request.getParameter("age")));
user.setImage(request.getParameter("image"));
//处理请求
UserService us = new UserService();
try {
us.updateUserByIdService(user);
request.getRequestDispatcher("SelectAllUserServlet").forward(request, response);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} }
13.(com.icss.controller)DeleteUserServlet.java
package com.icss.controller; import java.io.IOException;
import java.sql.SQLException; 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.icss.service.UserService; /**
* Servlet implementation class DeleteUserServlet
*/
@WebServlet("/DeleteUserServlet")
public class DeleteUserServlet extends HttpServlet {
private static final long serialVersionUID = 1L; /**
* @see HttpServlet#HttpServlet()
*/
public DeleteUserServlet() {
super();
// TODO Auto-generated constructor stub
} /**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
} /**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
//接受请求
int id = Integer.parseInt(request.getParameter("userid"));
//System.out.println(id);
//处理请求
UserService us = new UserService();
try {
us.deleteUserService(id);
request.getRequestDispatcher("SelectAllUserServlet").forward(request, response);
} catch (ClassNotFoundException | SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} }
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