0721框架课程作业

最新推荐文章于 2024-10-29 12:37:14 发布

原创最新推荐文章于 2024-10-29 12:37:14 发布 · 239 阅读

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CC 4.0 BY-SA版权

本文介绍了一个基于SpringMVC框架的用户登录系统实现过程，涵盖了从项目搭建到功能测试的完整步骤，包括POJO类定义、DAO层操作、Service层处理、控制器设计及视图展示。

一、作业1：

1.创建工程，导入相关jar包

2.创建pojo包

package com.openlab.pojo;

import java.util.Date;

public class User {
    private Integer id;
    private String userCode;
    private String userName;
    private String userPassword;
    private Integer gender;
    private Date birthday;
    private String phone;
    private String address;
    private Integer userRole;
    private Integer createdBy;
    private Date creationDate;
    private Integer modifyBy;
    private Date modifyDate;
    private String idPicPath;
    private String workPicPath;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getUserCode() {
        return userCode;
    }

    public void setUserCode(String userCode) {
        this.userCode = userCode;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserPassword() {
        return userPassword;
    }

    public void setUserPassword(String userPassword) {
        this.userPassword = userPassword;
    }

    public Integer getGender() {
        return gender;
    }

    public void setGender(Integer gender) {
        this.gender = gender;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public String getPhone() {
        return phone;
    }

    public void setPhone(String phone) {
        this.phone = phone;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Integer getUserRole() {
        return userRole;
    }

    public void setUserRole(Integer userRole) {
        this.userRole = userRole;
    }

    public Integer getCreatedBy() {
        return createdBy;
    }

    public void setCreatedBy(Integer createdBy) {
        this.createdBy = createdBy;
    }

    public Date getCreationDate() {
        return creationDate;
    }

    public void setCreationDate(Date creationDate) {
        this.creationDate = creationDate;
    }

    public Integer getModifyBy() {
        return modifyBy;
    }

    public void setModifyBy(Integer modifyBy) {
        this.modifyBy = modifyBy;
    }

    public Date getModifyDate() {
        return modifyDate;
    }

    public void setModifyDate(Date modifyDate) {
        this.modifyDate = modifyDate;
    }

    public String getIdPicPath() {
        return idPicPath;
    }

    public void setIdPicPath(String idPicPath) {
        this.idPicPath = idPicPath;
    }

    public String getWorkPicPath() {
        return workPicPath;
    }

    public void setWorkPicPath(String workPicPath) {
        this.workPicPath = workPicPath;
    }
}

3.创建utils包

package com.openlab.utils;

import java.sql.*;

public class JDBCUtils {
    static Connection connection = null;

    public static Connection getConnection(){
        try {
            Class.forName("com.mysql.jdbc.Driver");
            connection = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/smbms?useUnicode=true&amp;characterEncoding=utf-8"
            ,"root","123456");
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return connection;
    }

    public static void closeResource(Connection connection, ResultSet resultSet, Statement statement) {
        if(resultSet != null){
            try {
                resultSet.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        if(statement!=null){
            try {
                statement.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
        if(connection!=null){
            try {
                connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}

4.创建dao包

package com.openlab.dao;

import com.openlab.pojo.User;

public interface UserDao {

    User selectByUserCodeAndPassword(String userCode, String password);
}

5.创建dao.impl包

package com.openlab.dao.impl;

import com.openlab.dao.UserDao;
import com.openlab.pojo.User;
import com.openlab.utils.JDBCUtils;
import org.springframework.stereotype.Repository;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

@Repository
public class UserDaoImpl implements UserDao {

    @Override
    public User selectByUserCodeAndPassword(String userCode, String password) {
        String sql = "select * from smbms_user where userCode = ? and userPassword = ?";
        Connection connection = JDBCUtils.getConnection();
        PreparedStatement preparedStatement = null;
        ResultSet resultSet = null;
        User user = null;
        try {
            preparedStatement = connection.prepareStatement(sql);
            preparedStatement.setString(1,userCode);
            preparedStatement.setString(2,password);
            resultSet = preparedStatement.executeQuery();
            while (resultSet.next()){
                user = new User();
                user.setUserName(resultSet.getString("userName"));
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }

        return user;
    }
}

6.创建service包

package com.openlab.service;

import com.openlab.pojo.User;

public interface UserService {

    User login(String userCode, String password);

}

7.创建service.impl包

package com.openlab.service.impl;

import com.openlab.dao.UserDao;
import com.openlab.pojo.User;
import com.openlab.service.UserService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;

@Service
public class UserServiceImpl implements UserService {

    @Resource
    private UserDao userDao;

    public UserDao getUserDao() {
        return userDao;
    }

    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }

    @Override
    public User login(String userCode, String password) {
        return userDao.selectByUserCodeAndPassword(userCode,password);
    }

}

8.创建配置文件

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-3.2.xsd">

    <context:component-scan base-package="com.openlab.dao.impl"></context:component-scan>
    <context:component-scan base-package="com.openlab.service.impl"></context:component-scan>

</beans>

springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <mvc:resources location="/statics/" mapping="s/**"></mvc:resources>

    <mvc:annotation-driven></mvc:annotation-driven>

    <context:component-scan base-package="com.openlab.controller"></context:component-scan>
    
</beans>

9.配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    <servlet>
        <servlet-name>springMvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>springMvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

10.创建jsp

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>$Title$</title>
  </head>
  <body>
  <a href="${pageContext.request.contextPath}/user/login">去往登录界面</a>
  </body>
</html>

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
    <title>用户登录界面</title>
</head>
<body>
<form method="post" action="${pageContext.request.contextPath}/user/doLogin">
    用户名：<input type="text" name="userCode"><br/>
    密  码：<input type="password" name="password"><br/>
    <span>${err}</span><br/>
    <input type="submit" value="登录">
</form>
</body>
</html>

mainPage.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<html>
<head>
    <title>主页面</title>
</head>
<body>
你好，用户${user.userName}，欢迎光临
<br/>
<img src="0721work2_war_exploded/../s/images/preview.jpg">
<a href="${pageContext.request.contextPath}/user/logout">退出登录</a>
</body>
</html>

11.创建controller包

package com.openlab.controller;

import com.openlab.pojo.User;
import com.openlab.service.UserService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@Controller
@RequestMapping("/user")
public class UserController {

    @Resource
    private UserService userService;

    @RequestMapping("/login")
    public String login(){
        return "login";
    }

    @RequestMapping(value = "/doLogin",method = RequestMethod.POST )
    public String doLogin(String userCode, String password, HttpServletRequest request, HttpSession session){
        User user = userService.login(userCode, password);
        if(user!=null){
            session.setAttribute("user",user);
            return "redirect:/user/check";
        }else {
            request.setAttribute("err","用户名或密码错误，登录失败");
            return "login";
        }
    }

    @RequestMapping("/check")
    public String main(HttpSession session){
        if(session.getAttribute("user")==null){
            return "redirect:/user/login";
        }else {
            return "redirect:/mainPage.jsp";
        }

    }

    @RequestMapping("/logout")
    public String logout(HttpSession session){
        session.removeAttribute("user");
        return "redirect:/user/login";
    }

}

12.测试

二、作业2

1.创建error.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>错误页面</title>
</head>
<body>
服务器发生异常，请联系管理员
</body>
</html>

2.修改springmvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <mvc:resources location="/statics/" mapping="s/**"></mvc:resources>

    <mvc:annotation-driven></mvc:annotation-driven>

    <context:component-scan base-package="com.openlab.controller"></context:component-scan>

    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        <property name="exceptionMappings">
            <props>
                <prop key="java.lang.RuntimeException">
                    error
                </prop>
            </props>
        </property>
    </bean>

</beans>

3.修改UserController.java

package com.openlab.controller;

import com.openlab.pojo.User;
import com.openlab.service.UserService;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@Controller
@RequestMapping("/user")
public class UserController {

    @Resource
    private UserService userService;

    @RequestMapping("/login")
    public String login(){
        return "login";
    }

    @RequestMapping(value = "/doLogin",method = RequestMethod.POST )
    public String doLogin(String userCode, String password, HttpServletRequest request, HttpSession session){
        User user = userService.login(userCode, password);
        if(user!=null){
            session.setAttribute("user",user);
            return "redirect:/user/check";
        }else {
            throw new RuntimeException("用户名或密码错误");
        }
    }

    @RequestMapping("/check")
    public String main(HttpSession session){
        if(session.getAttribute("user")==null){
            return "redirect:/user/login";
        }else {
            return "redirect:/mainPage.jsp";
        }

    }

    @RequestMapping("/logout")
    public String logout(HttpSession session){
        session.removeAttribute("user");
        return "redirect:/user/login";
    }

}