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【SSM进阶学习系列丨整合篇】Spring+SpringMVC+MyBatis 框架配置详解

【SSM进阶学习系列丨整合篇】Spring+SpringMVC+MyBatis 框架配置详解-LMLPHP

文章目录

【SSM进阶学习系列丨整合篇】Spring+SpringMVC+MyBatis 框架配置详解-LMLPHP

一、环境准备

1.1、创建数据库和表

create database ssm;

use ssm;

create table t_account(
	id int primary key auto_increment,
  	name varchar(30),
  	age int,
  	balance int
);

insert into t_account values(default,'HelloWorld',23,100);

1.2、导入框架依赖的jar包

​ 由于我们整合的是SpringMVC、Spring和MyBatis，所以需要将这三个框架所需要的jar包导入到项目中。注意：由于要连接数据库，所以仍需要数据库驱动包。

​ 

<dependencies>
   <!--  MyBatis框架核心jar包  -->
   <dependency>
       <groupId>org.mybatis</groupId>
       <artifactId>mybatis</artifactId>
       <version>3.5.3</version>
   </dependency>

   <!-- MySQL数据库驱动包 -->
   <dependency>
      	<groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.6</version>
   </dependency>
  
  	<!-- 导入Spring的jar包-->
    <dependency>
       	<groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>5.2.1.RELEASE</version>
    </dependency>

    <!-- 添加对AOP的支持  -->
    <dependency>
        <groupId>org.aspectj</groupId>
        <artifactId>aspectjweaver</artifactId>
        <version>1.9.4</version>
    </dependency>

    <!-- 事务的jar包    -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-tx</artifactId>
        <version>5.2.1.RELEASE</version>
    </dependency>
  
   	<!-- 操作数据库的支持	-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.1.RELEASE</version>
    </dependency>
  
  	<!--包含web应用开发时，用到spring框架时所需的核心类、文件上传以及工具类等-->
  	<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.2.1.RELEASE</version>
    </dependency>

    <!--与SpringMVC框架相关的jar包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.2.1.RELEASE</version>
    </dependency>
  	
  	<!--与json相关的jar包-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.9.5</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.9.5</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.5</version>
    </dependency>
  
  	<!--原生的servlet的jar包-->
    <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>3.1.0</version>
          <scope>provided</scope>
    </dependency>
  
  	<!-- JSTL表达式 -->
  	<dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
  
  	<!--文件上传的jar包-->
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.1</version>
    </dependency>
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
  	</dependency>
	
  	 <!--  log4j日志包  -->
     <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
     </dependency>
  
  	<!-- spring的测试包-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>5.2.1.RELEASE</version>
        <scope>test</scope>
    </dependency>
  
  	<!--  单元测试框架  -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
    </dependency>
  
	<!-- MyBatis框架和Spring框架转换的转换包-->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>2.0.3</version>
    </dependency>
  
  	<!-- 阿里巴巴的数据源 -->
  	<dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.21</version>
    </dependency>
</dependencies>

1.3、修改Maven的编译版本

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
</properties>

1.4、完善Maven目录

【SSM进阶学习系列丨整合篇】Spring+SpringMVC+MyBatis 框架配置详解-LMLPHP

1.5、编写项目需要的包

cn.bdqn.domain
cn.bdqn.mapper
cn.bdqn.service
cn.bdqn.controller
cn.bdqn.utils
cn.bdqn.exception

1.6、编写实体、Mapper、Service

public class Account {        
                              
    private int id;           
                              
    private String name;      
                              
    private Integer age;      
                              
    private Integer balance; 

	// 生成get和set方法、toString方法
}

public interface AccountMapper {
    
    // 查询所有的账号
    public List<Account> selectAll();
 
    // 保存账号
    public void insert(Account account);
}

public interface AccountService {

    // 查询所有账号
    public List<Account> queryAll();

    // 保存账号
    public void save(Account account);
}

public class AccountServiceImpl implements AccountService {

    // 查询全部账号
    public List<Account> queryAll() {

        System.out.println("查询全部账号");
        return null;
    }

    // 保存账号
    public void save(Account account) {
        System.out.println("保存账号");
    }
}

二、配置MyBatis环境

2.1、配置mybatis的主配置文件

​ 主配置文件：mybaits-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">
<!-- mybatis的主配置文件 -->
<configuration>
    <typeAliases>
        <!-- 批量起别名  -->
        <package name="cn.bdqn.domain"/>
    </typeAliases>

    <!-- 配置环境 -->
    <environments default="mysql">
        <!-- 配置mysql的环境-->
        <environment id="mysql">
            <!-- 配置事务的类型-->
            <transactionManager type="JDBC"></transactionManager>
            <!-- 配置数据源（连接池） -->
            <dataSource type="POOLED">
                <!-- 配置连接数据库的4个基本信息 -->
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql:///ssm?allowMultiQueries=true"/>
                <property name="username" value="root"/>
                <property name="password" value="1234567"/>
            </dataSource>
        </environment>
    </environments>

    <mappers>
        <package name="cn.bdqn.mapper"/>
    </mappers>

</configuration>

2.2、编写映射文件

​ 在resources目录下新建与mapper接口同名的目录。即：cn/bdqn/mapper

<?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.bdqn.mapper.AccountMapper">

    <!-- 查询全部账号信息-->
    <select id="selectAll" resultType="cn.bdqn.domain.Account">
        select
            id,name,age,balance
        from
            t_account
    </select>
    
    <!--  新增账号  -->
    <insert id="insert">
        insert into t_account(name,age,balance) values (#{name},#{age},#{balance})
    </insert>
    
</mapper>

2.3、测试环境是否正确

    @Test
    public void testMyBatis() throws Exception{
        InputStream is = Resources.getResourceAsStream("mybatis-config.xml");

        SqlSessionFactory ssf = new SqlSessionFactoryBuilder().build(is);

        SqlSession session = ssf.openSession();

        AccountMapper accountMapper = session.getMapper(AccountMapper.class);
        List<Account> accounts = accountMapper.selectAll();
        System.out.println(accounts);

        is.close();
        session.close();
    }

三、配置Spring环境

3.1、编写主配置文件

​ 

<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
        https://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        https://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
		
 	    <!-- 1、配置扫描包,排除Controller层的注解	-->
    <context:component-scan base-package="cn.bdqn">
        <context:exclude-filter	type="annotation" 																			expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
</beans>

3.2、测试Spring环境是否正确

    @Test
    public void testSpring() throws Exception{

        ApplicationContext ac = new ClassPathXmlApplicationContext("beans.xml");

        AccountService accountService = (AccountService) ac.getBean("accountService");

        System.out.println(accountService);
    }

四、Spring整合MyBaits框架

​ 注意：我们在配置MyBaits环境的时候，数据源配置在了MyBatis上，现在由于Spring整合MyBaits，则对于在MyBatis中配置的数据源要交给Spring去管理。在这里，我们用的阿里巴巴的数据源。

​ 官网

4.1、定义数据库配置

​ 定义db.properties数据库配置文件

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql:///ssm?allowMultiQueries=true
jdbc.username=root
jdbc.password=1234567

4.2、主配置文件中引入properties配置文件

<context:property-placeholder location="classpath:db.properties"/>

4.3、注册数据源

<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" 
      init-method="init" destroy-method="close">
        <property name="driverClassName" value="${jdbc.driver}"/>
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
</bean>

4.4、定义事务管理器

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

4.5、开启事务的注解驱动支持

<tx:annotation-driven transaction-manager="transactionManager"/>

4.6、配置SqlSessionFactoryBean

<!--作用：创建SqlSessionFactory工厂-->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
  	<property name="dataSource" ref="dataSource" />
</bean>

4.7、配置自动扫描所有 Mapper 接口和文件

<!-- 作用：能够扫描所有的Mapper接口的实现，让这些Mapper能够自动注入-->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="cn.bdqn.mapper"/>
</bean>

4.8、测试

    @Test
    public void testSpringAndMyBatis() throws Exception{
        ApplicationContext ac =  new ClassPathXmlApplicationContext("beans.xml");

        AccountService accountService = (AccountService) ac.getBean("accountService");

        List<Account> accounts = accountService.queryAll();

        System.out.println(accounts);
    }

五、配置SpringMVC环境

5.1、主配置文件

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

    <!-- 配置扫描包  -->
    <context:component-scan base-package="cn.bdqn" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- 配置视图解析器,作用是配置目录前缀和文件后缀，然后解析为一个资源文件 -->
    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

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

5.2、web.xml配置前端控制器

<?xml version="1.0" encoding="utf-8"?>
<web-app 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"
         version="3.0">

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

六、Spring集成SpringMVC环境

​ 在web.xml文件中配置。

<!--	配置 spring 提供的监听器，用于启动服务时加载容器 。	-->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- 手动指定 spring 配置文件位置 -->
<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:beans.xml</param-value>
</context-param>

【SSM进阶学习系列丨整合篇】Spring+SpringMVC+MyBatis 框架配置详解-LMLPHP

04-26 17:13
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