Spring+Spring MVC+MySQL的简单开发

实现一个用户登陆的web界面，登陆成功后页面跳转并显示登陆用户名和积分（每次登陆加5分），登陆失败返回error

记录一下过程

1、在MySQL中建立名为sampledb的数据库，并新建两张表，分别命名t_user（存储用户信息）、t_login_log（存储登陆日志）

表内属性如下：

2、新建一个maven管理的web项目

3、pom.xml配置（因为功能比较简单最后没有使用junit进行测试）

  <dependencies>
    <!-- https://mvnrepository.com/artifact/junit/junit -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.0</version>
      <scope>provided</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/javax.servlet.jsp/jsp-api -->
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.2</version>
      <scope>provided</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>6.0.6</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>5.0.3.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.0.3.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-test 测试-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.0.3.RELEASE</version>
      <scope>test</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->
    <dependency>
      <groupId>commons-dbcp</groupId>
      <artifactId>commons-dbcp</artifactId>
      <version>1.4</version>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-autoconfigure</artifactId>
      <version>1.5.8.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-jpa -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-data-jpa</artifactId>
      <version>1.5.7.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.0.3.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.0.3.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.0.3.RELEASE</version>
    </dependency>
  </dependencies>

4、建立如下目录结构

5、LoginLogDao

package com.smart.dao;

import com.smart.domain.LoginLog;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

@Repository
public class LoginLogDao {
    private JdbcTemplate jdbcTemplate;

    //保存登录日志SQL
    private final static String INSERT_LOGIN_LOG_SQL = "INSERT INTO t_login_log (user_id,ip,login_datetime) VALUES (?,?,?)";

    public void insertLoginLog(LoginLog loginLog){
        Object[] args = {loginLog.getUserId(),loginLog.getIp(),loginLog.getLoginDate()};
        jdbcTemplate.update(INSERT_LOGIN_LOG_SQL, args);
    }

    @Autowired
    public void setJdbcTemplate(JdbcTemplate jdbcTemplate){
        this.jdbcTemplate = jdbcTemplate;
    }
}

6、UserDao

package com.smart.dao;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowCallbackHandler;
import org.springframework.stereotype.Repository;

import com.smart.domain.User;

import java.sql.ResultSet;
import java.sql.SQLException;

@Repository
public class UserDao {
    private JdbcTemplate jdbcTemplate;

    @Autowired
    public void setJdbcTemplate(JdbcTemplate jdbcTemplate){
        this.jdbcTemplate = jdbcTemplate;
    }


    /**
     * 根据用户名和密码获取匹配的用户
     * @param userName 用户名
     * @param password 密码
     * @return 1表示用户名密码正确，0表示用户名密码错误
     */
    public int getMatchCount(String userName,String password){
        String sqlStr = "SELECT count(*) FROM t_user WHERE user_name=? and password=?";
        return jdbcTemplate.queryForObject(sqlStr, new Object[]{userName, password},Integer.class);
    }

    private final static String MATCH_COUNT_SQL = "SELECT * FROM t_user WHERE user_name=?";

    private final static String UPDATE_LOGIN_INFO_SQL = "UPDATE t_user SET last_visit=?,last_ip=?,credits=? WHERE user_id=?";

    /**
     * 通过用户名获得用户对象
     * @param userName 用户名
     * @return user对象
     */
    public User findUserByUserName(final String userName){
        final User user = new User();
        jdbcTemplate.query(MATCH_COUNT_SQL, new Object[]{userName},
                new RowCallbackHandler() {
                    public void processRow(ResultSet rs) throws SQLException {
                        user.setUserId(rs.getInt("user_id"));
                        user.setUserName(userName);
                        user.setCredits(rs.getInt("credits"));
                    }
                });
        return user;
    }

    /**
     * 更新用户积分、最后登录IP、最后登录时间
     * @param user
     */
    public void updateLogeinInfo(User user){
        jdbcTemplate.update(UPDATE_LOGIN_INFO_SQL, new Object[]{user.getLastVisit(), user.getLastIP(), user.getCredits(), user.getUserId()});
    }
}

7、LoginLog
关于Serializable参考文章

package com.smart.domain;

import java.io.Serializable;
import java.util.Date;

public class LoginLog implements Serializable {
    private int loginLogId;
    private int userId;
    private String ip;
    private Date loginDate;

    public int getLoginLogId() {
        return loginLogId;
    }

    public void setLoginLogId(int loginLogId) {
        this.loginLogId = loginLogId;
    }

    public int getUserId() {
        return userId;
    }

    public void setUserId(int userId) {
        this.userId = userId;
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }

    public Date getLoginDate() {
        return loginDate;
    }

    public void setLoginDate(Date loginDate) {
        this.loginDate = loginDate;
    }
}

8、User

package com.smart.domain;

import java.io.Serializable;
import java.util.Date;

public class User implements Serializable {
    private int userId;
    private String userName;
    private String password;
    private int credits;
    private String lastIP;
    private Date lastVisit;

    public int getUserId() {
        return userId;
    }

    public void setUserId(int userId) {
        this.userId = userId;
    }

    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 int getCredits() {
        return credits;
    }

    public void setCredits(int credits) {
        this.credits = credits;
    }

    public String getLastIP() {
        return lastIP;
    }

    public void setLastIP(String lastIP) {
        this.lastIP = lastIP;
    }

    public Date getLastVisit() {
        return lastVisit;
    }

    public void setLastVisit(Date lastVisit) {
        this.lastVisit = lastVisit;
    }

}

9、UserService

package com.smart.service;

import com.smart.dao.LoginLogDao;
import com.smart.dao.UserDao;
import com.smart.domain.LoginLog;
import com.smart.domain.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service
public class UserService {
    private UserDao userDao;
    private LoginLogDao loginLogDao;

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

    @Autowired
    public void setLoginLogDao(LoginLogDao loginLogDao){
        this.loginLogDao = loginLogDao;
    }

    public boolean hasMatchUser(String userName, String password){
        int matchCount = userDao.getMatchCount(userName, password);
        return matchCount > 0;
    }

    public User findUserByUserName(String userName){
        return userDao.findUserByUserName(userName);
    }

    @Transactional
    public void loginSuccess(User user){
        user.setCredits(5+user.getCredits());
        LoginLog loginLog = new LoginLog();
        loginLog.setUserId(user.getUserId());
        loginLog.setIp(user.getLastIP());
        loginLog.setLoginDate(user.getLastVisit());
      userDao.updateLogeinInfo(user);
      loginLogDao.insertLoginLog(loginLog);
    }
}

10、LoginCommand

package com.smart.web;

public class LoginCommand {
    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;
    }
}

11、LoginController

package com.smart.web;

import com.smart.domain.User;
import com.smart.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import java.util.Date;

//spring MVC的Controller
@Controller
public class LoginController {
    private UserService userService;

    //处理静态网页/index.html请求
    @RequestMapping(value = "/index.html")
    public String loginPage(){ return "login"; }

    @RequestMapping(value = "/loginCheck.html")
        public ModelAndView loginCheck(HttpServletRequest request, LoginCommand loginCommand){
        boolean isValidUser = userService.hasMatchUser(loginCommand.getUserName(), loginCommand.getPassword());
        if (!isValidUser){
//            return new ModelAndView("login","error","用户名或密码错误。");
            return new ModelAndView("logError");
        }
        else{
            User user = userService.findUserByUserName(loginCommand.getUserName());
            user.setLastIP(request.getLocalAddr());
            user.setLastVisit(new Date());
            userService.loginSuccess(user);
            request.getSession().setAttribute("user",user);
            return new ModelAndView("main");
        }
    }

    @Autowired
    public void setUserService(UserService userService){
            this.userService = userService;
    }
}

12、smart-context（ApplicationContext文件）

<?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"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
     http://www.springframework.org/schema/tx
     http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
     http://www.springframework.org/schema/aop
     http://www.springframework.org/schema/aop/spring-aop-4.0.xsd">

    <!--扫描类包，将标注为注解的类自动转化为Bean，同时完成Bean的注入-->
    <context:component-scan base-package="com.smart.dao"/>

    <context:component-scan base-package="com.smart.service"/>

    <!-- dataSource 配置 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" primary="true">
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />
        <!-- mysql6.0.x以上需要指定时区 -->
        <property name="url" value="jdbc:mysql://localhost:3306/sampledb?serverTimezone=UTC" />
        <property name="username" value="root" />
        <property name="password" value="123456" />
    </bean>

    <!-- 引入jdbc配置文件 -->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <aop:config proxy-target-class="true">
        <aop:pointcut id="serviceMethod" expression="(execution(* com.smart.service..*(..))) and
        (@annotation(org.springframework.transaction.annotation.Transactional))" />
        <aop:advisor pointcut-ref="serviceMethod" advice-ref="txAdvice" />
    </aop:config>
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>
</beans>

13、smart-servlet

<?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-4.0.xsd
               http://www.springframework.org/schema/context
               http://www.springframework.org/schema/context/spring-context-4.0.xsd">

               <context:component-scan base-package="com.smart.web"/>

    <!--配置视图解析器，将ModelAndView及字符串解析为具体页面-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

14、web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->

<!--
  - This is the Cocoon web-app configurations file
  -
  - $Id$
  -->
<web-app  version="3.0"
          xmlns="http://java.sun.com/xml/ns/javaee"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:smart-context.xml</param-value>
    <!-- 默认是/WEB-INF/applicationContext.xml ，classpath关键字特指类路径下加载，多个配置文件可用逗号或空格分隔-->
  </context-param>

  <!-- Servlet Filters ================================================ -->

  <!--
    - Declare a filter for multipart MIME handling
    -->

  <!--
    - Use the Cocoon debug filter together with the Cocoon demo webapp
  <filter-mapping>
    <filter-name>CocoonDebugFilter</filter-name>
    <servlet-name>Cocoon</servlet-name>
  </filter-mapping>
    -->

  <!-- Servlet Context Listener ======================================= -->

  <!--
    - Declare Spring context listener which sets up the Spring Application Context
    - containing all Cocoon components (and user defined beans as well).
    -->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  <!--
    - Declare Spring request listener which sets up the required RequestAttributes
    - to support Springs and Cocoon custom bean scopes like the request scope or the
    - session scope.
    -->
  <listener>
    <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
  </listener>

  <!-- Servlet Configuration ========================================== -->

  <!--
    - Servlet that dispatches requests to the Spring managed block servlets
    -->
  <servlet>
    <servlet-name>smart</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:smart-servlet.xml</param-value>
      <!-- 默认是/WEB-INF/[servlet名字]-servlet.xml -->
    </init-param>
    <load-on-startup>1</load-on-startup>
    <!--启动优先级-->
  </servlet>

  <servlet-mapping>
    <servlet-name>smart</servlet-name>
    <url-pattern>*.html</url-pattern>
  </servlet-mapping>

</web-app>

15、login.jsp 登陆界面

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!--引用核心标签-->
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<html>
    <head>
        <title>login</title>
        <script>
             function checkUser(){
                var result = document.getElementById("userid").value;
                var password = document.getElementById("userpassid").value;
                if(result == ""  ){
                    alert("用户名不能为空");
                    return false;
                }
                if(password == ""  ){
                    alert("密码不能为空");
                    return false;
                }
                // document.getElementById("check").onsubmit();
            }
        </script>
    </head>
    <body>
        <%--<c:if test="${!empty error}">--%>
            <%--<font color="red"><c:out value="%{error}" /></font>--%>
        <%--</c:if>--%>
        <form action="<c:url value="/loginCheck.html" />" method="post" onsubmit="return checkUser()">
        <table align="center" >
            <tr>
                <td>用户名：</td><td><input type="text" name="userName" id="userid" /></td>
            </tr>    
            <tr>
                <td>密码：</td><td><input type="password" name="password" id="userpassid" /></td>
            <tr/>            
            <tr>
            <td colspan="2",align="center">
                <input type="submit" value="登录" id="check" />
                <input type="reset" value="重置" />
            </td>
            </tr>        
        </table>
        </form>
    </body>
</html>

16、logError.jsp 登陆信息错误，提示返回

<%--
  Created by IntelliJ IDEA.
  User: like
  Date: 2018/3/6
  Time: 16:25
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>error</title>
</head>
    <body>
        <form action="<c:url value="/index.html" />" method="post">
        <table align="center" >
            <tr>
                <td>error</td>
            </tr>
            <tr>
                <td colspan="2",align="center">
                    <input type="submit" value="返回" />
                </td>
            </tr>
        </table>
        </form>
    </body>
</html>

17、main.jsp 登陆成功

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
        <title>你好</title>
    </head>

<body>
    ${user.userName}，当前积分为${user.credits};
</body>
</html>

18、Tomcat配置

19、运行结果