杨校老师课堂基于SSM整合之用户登录案例【Eclipse - Maven版】

阳光穿透心脏的1/2处 2021-12-01 10:46 226阅读 0赞

## 1. 开发环境 ##

Eclipse：2019.06  +  Jdk：8u211 + Tomcat：9.0.14 + Maven：3

## 2.准备工作 ##

spring5.1.5 +  mybatis3.6.4 +  mybatis-spring1.3.2 +  druid1.1.0 + MySQL5.1.4.6

## 3. 项目布局 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9tcnlhbmcuYmxvZy5jc2RuLm5ldA_size_16_color_FFFFFF_t_70][]

## 4.编码 ##

### 1. 编写pom.xml ###

<?xml version="1.0" encoding="UTF-8"?>
    
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
      <modelVersion>4.0.0</modelVersion>
    
      <groupId>cn.javabs</groupId>
      <artifactId>ssm-demo</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>war</packaging>
    
      <name>ssm-demo Maven Webapp</name>
      
      <url>http://www.javabs.cn</url>
    
      
      
      <properties>
      		<spring.version>5.1.5.RELEASE</spring.version>
    		<mybatis.version>3.4.6</mybatis.version>
    		<mybatis-spring.version>1.3.2</mybatis-spring.version>
            <slf4j.version>1.7.25</slf4j.version>
            <log4j.version>1.2.17</log4j.version>
    		<druid.version>1.1.10</druid.version> 
    		<mysql.version>5.1.38</mysql.version>
      </properties>
      
      <dependencies>
        	
    		<dependency>
    			<groupId>org.aspectj</groupId>
    			<artifactId>aspectjweaver</artifactId>
    			<version>1.6.8</version>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-aop</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-context</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    
    
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-web</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-webmvc</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-test</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-tx</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-jdbc</artifactId>
    			<version>${spring.version}</version>
    		</dependency>
    
    		
    		
    		<dependency>
    			 <groupId>org.mybatis</groupId>
       			<artifactId>mybatis</artifactId>
    			<version>${mybatis.version}</version>
    		</dependency>
    		
    		
    		<dependency>
    			<groupId>org.mybatis</groupId>
    		    <artifactId>mybatis-spring</artifactId>
    			<version>${mybatis-spring.version}</version>
    		</dependency>
    		
    		 
            <dependency>
                <groupId>log4j</groupId>
                <artifactId>log4j</artifactId>
                <version>${log4j.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-api</artifactId>
                <version>${slf4j.version}</version>
            </dependency>
            
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
                <version>${slf4j.version}</version>
            </dependency>
    	        
    	        
    	        
           	<dependency>
    	      <groupId>junit</groupId>
    	      <artifactId>junit</artifactId>
    	      <version>4.12</version>
    	      <scope>test</scope>
    	    </dependency>
    	   
    	   
    	    <dependency>
    	    	<groupId>mysql</groupId>
    	    	<artifactId>mysql-connector-java</artifactId>
    	    	<version>${mysql.version}</version>
    	    </dependency>
    	    
    	    <dependency>
    		    <groupId>com.alibaba</groupId>
    		    <artifactId>druid</artifactId>
    		    <version>${druid.version}</version>
    		</dependency>
    	    
     		<dependency>
    	    	<groupId>javax.servlet</groupId>
    		    <artifactId>javax.servlet-api</artifactId>
    		    <version>4.0.1</version>
    		    <scope>provided</scope>
    	    </dependency>
    	    
    	    <dependency>
    			<groupId>jstl</groupId>
    			<artifactId>jstl</artifactId>
    			<version>1.2</version>
    		</dependency>
    		
    		 <dependency>
    	    	<groupId>javax.servlet.jsp</groupId>
    	    	<artifactId>jsp-api</artifactId>
    	    	<version>2.0</version>
    	    	<scope>provided</scope>
    	    </dependency>
      </dependencies>
      <build>
        <finalName>ssm</finalName>
         <pluginManagement>
    		<plugins>
    			<plugin>
    				<groupId>org.apache.maven.plugins</groupId>
    				<artifactId>maven-compiler-plugin</artifactId>
    				<version>3.0</version>
    				<configuration>
    					<source>1.8</source>
    					<target>1.8</target>
    					<encoding>UTF-8</encoding>
    					<showWarnings>true</showWarnings>
    				</configuration>
    			</plugin>
    			
    			 
    	        <plugin>
                    <groupId>org.apache.tomcat.maven</groupId>
    			    <artifactId>tomcat7-maven-plugin</artifactId>
    			    <version>2.2</version>
                    <configuration>
                        
                        <server>tomcat7</server>
                        <port>8888</port>
                        <encoding>UTF-8</encoding>
                    </configuration>
                    <executions>
                        <execution>
                            <phase>package</phase>
                            <goals>
                                <goal>run</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
    		</plugins>
    	</pluginManagement>
      </build>
    </project>

### 2. 编写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">
      <display-name>基于ssm的整合案例</display-name>
      
      
      <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>
      
      
      <filter>
      	<filter-name>encoding</filter-name>
      	<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
      	<init-param>
      		<param-name>encoding</param-name>
      		<param-value>UTF-8</param-value>
      	</init-param>
      </filter>
      <filter-mapping>
      	<filter-name>encoding</filter-name>
      	<url-pattern>*.action</url-pattern>
      </filter-mapping>
      
      
      <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-config.xml</param-value>
      	</init-param>
      	
      	<load-on-startup>1</load-on-startup>
      </servlet>
      <servlet-mapping>
      	<servlet-name>springmvc</servlet-name>
      	<url-pattern>*.action</url-pattern>
      </servlet-mapping>
      
      
      <welcome-file-list>
      	<welcome-file>index.jsp</welcome-file>
      </welcome-file-list>
      
    </web-app>

### 3. 配置文件 ###

**1. applicationContext.xml**

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xmlns:aop="http://www.springframework.org/schema/aop"
    	xmlns="http://www.springframework.org/schema/beans"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:mvc="http://www.springframework.org/schema/mvc"
    	xmlns:tx="http://www.springframework.org/schema/tx"
    	xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd 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 http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd ">
    
    	
    	<context:property-placeholder location="classpath:jdbc.properties" />
    	
    	
    	<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" >
    		<property name="driverClassName" value="${jdbc.driverClassName}" />
    		<property name="url" value="${jdbc.url}" />
    		<property name="username" value="${jdbc.username}" />
    		<property name="password" value="${jdbc.password}" />
    	</bean>
    	
    	
    	<bean class="org.mybatis.spring.SqlSessionFactoryBean" >
    		
    		<property name="configLocation" value="classpath:mybatis-config.xml" />
    		
    		<property name="dataSource" ref="dataSource" />
    	</bean>
    	
    	
    	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" >
    		<property name="dataSource" ref="dataSource" />
    	</bean>
    	
    	<tx:advice id="txAdvice" transaction-manager="transactionManager">
    		<tx:attributes>
    			
    			<tx:method name="add*" propagation="REQUIRED"/>
    			<tx:method name="insert*" propagation="REQUIRED"/>
    			<tx:method name="create*" propagation="REQUIRED"/>
    			<tx:method name="save*" propagation="REQUIRED"/>
    			<tx:method name="put*" propagation="REQUIRED"/>
    			<tx:method name="delete*" propagation="REQUIRED"/>
    			<tx:method name="remove*" propagation="REQUIRED"/>
    			<tx:method name="edit*" propagation="REQUIRED"/>
    			<tx:method name="update*" propagation="REQUIRED"/>
    			<tx:method name="get*" propagation="SUPPORTS" read-only="true" />
    			<tx:method name="find*" propagation="SUPPORTS" read-only="true" />
    			<tx:method name="select*" propagation="SUPPORTS" read-only="true" />
    			<tx:method name="quert*" propagation="SUPPORTS" read-only="true" />
    		</tx:attributes>
    	</tx:advice>
    	
    	<aop:config>
    		<aop:advisor advice-ref="txAdvice" pointcut="execution(* cn.javabs.ssm.service.*.*(..))"/>
    	</aop:config>
    	
    	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" >
    		<property name="basePackage" value="cn.javabs.ssm.dao" />
    	</bean>
    	
    	<context:component-scan base-package="cn.javabs.ssm.service"></context:component-scan>
    	
    </beans>

**2.springmvc-config.xml**

**3.mybatis-config.xml**

<?xml version="1.0" encoding="UTF-8" ?>
    <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
    
    <configuration>
    	
    	<typeAliases>
    		<package name="cn.javabs.ssm.entity"/>
    	</typeAliases>
    </configuration>

**4.jdbc.properties**

jdbc.driverClassName = com.mysql.jdbc.Driver
    jdbc.url = jdbc:mysql://localhost:3306/ssm-demo
    jdbc.username = root
    jdbc.password = sorry

建包：

cn.javabs.ssm.entity        --- 实体包
    
    cn.javabs.ssm.controller    --- 控制器包
    
    cn.javabs.ssm.service       --- 业务接口包
    
    cn.javabs.ssm.service.impl  --- 业务接口的实现类包
    
    cn.javabs.ssm.dao           --- 持久层接口包 + Mapper文件包

**User.java**

package cn.javabs.ssm.entity;
    
    public class User {
    
    	private Integer id;
    	private String username;
    	private String password;
    
    	public Integer getId() {
    		return id;
    	}
    
    	public void setId(Integer id) {
    		this.id = id;
    	}
    
    	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;
    	}
    
    	@Override
    	public String toString() {
    		return "User [id=" + id + ", username=" + username + ", password=" + password + "]";
    	}
    
    }

**2.UserDao.java**

package cn.javabs.ssm.dao;
    
    import org.apache.ibatis.annotations.Param;
    
    import cn.javabs.ssm.entity.User;
    
    public interface UserDao {
    
    	User userLogin(@Param("username") String username, @Param("password") String password);
    
    }

**3.UserDao.xml**

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
    <mapper namespace="cn.javabs.ssm.dao.UserDao">
    
    	<select id="userLogin" parameterType="String"
    		resultType="cn.javabs.ssm.entity.User">
    		select * from users where
    		username = #{username} and password = #{password}
    	</select>
    </mapper>

**4. UserService.java**

package cn.javabs.ssm.service;
    
    import cn.javabs.ssm.entity.User;
    
    public interface UserService {
    
    	User login(String username, String password);
    
    }

**5. UserServiceImpl.java**

package cn.javabs.ssm.service.impl;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Service;
    import org.springframework.transaction.annotation.Transactional;
    
    import cn.javabs.ssm.dao.UserDao;
    import cn.javabs.ssm.entity.User;
    import cn.javabs.ssm.service.UserService;
    
    @Service("userService")
    @Transactional
    public class UserServiceImpl implements UserService {
    
    	@Autowired
    	private UserDao userDao;
    
    	public User login(String username, String password) {
    		System.out.println(username);
    
    		User user = this.userDao.userLogin(username, password);
    		System.out.println("df");
    		System.out.println("ghj" + user);
    
    		return user;
    	}
    
    }

**6. UserController**

package cn.javabs.ssm.controller;
    
    import javax.servlet.http.HttpSession;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.PostMapping;
    
    import cn.javabs.ssm.entity.User;
    import cn.javabs.ssm.service.UserService;
    
    @Controller
    public class UserController {
    
    	@Autowired
    	private UserService userService;
    
    	@PostMapping("/userLogin.action")
    	public String userLogin(HttpSession session, String username, String password, Model model) {
    		System.out.println("password = " + password);
    		User user = userService.login(username, password);
    		System.out.println("user:" + user);
    
    		if (user != null) {
    			session.setAttribute("USER", user);
    			return "user";
    		}
    		model.addAttribute("msg", "您登陆失败");
    		return "message";
    	}
    }

7.在webapp下创建一个文件夹，命名为admin

分别创建三个网页：login.jsp    message.jsp     user.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"	pageEncoding="UTF-8"%>
    <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
    <c:set value="${pageContext.request.contextPath}" var="basePath"  ></c:set>    
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>登录</title>
    </head>
    <body>
    	<form action="${basePath}/userLogin.action" method="post">
    		Account: <input type="text" name="username" /> <br /> 
    		
    		Password:<input type="text" name="password" /> <br /> 
    		
    				 <input type="submit"  value="登录">
    	</form>
    </body>
    </html>

message.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>提示页面</title>
    </head>
    <body>
        ${msg}
    </body>
    </html>

user.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"  pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>登录成功主页</title>
    </head>
    <body>
    	<h2>${sessionScope.USER.username}，您好。</h2>
    </body>
    </html>

在webapp再建一个jsp，命名为：index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>登录入口</title>
    </head>
    <body>
    
    	<jsp:forward page="/admin/login.jsp"></jsp:forward>
    
    </body>
    </html>

右键项目，选择 Run As  ---  选择 Maven Build（从上数第二个）

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9tcnlhbmcuYmxvZy5jc2RuLm5ldA_size_16_color_FFFFFF_t_70 1][]

接下来在Goals的后方输入： tomcat7:run 然后点击 下方的 Run

如图：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9tcnlhbmcuYmxvZy5jc2RuLm5ldA_size_16_color_FFFFFF_t_70 2][]

代码托管：

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