SSM整合---简略版

SSM整合

1.导入相关依赖

<dependencies>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>8.0.22</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.5.6</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/junit/junit -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.13.1</version>
        <scope>test</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/log4j/log4j -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.16</version>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>5.2.0.RELEASE</version>
    </dependency>
</dependencies>

2.Mybatis层

• mybatis-configxml编写

  <?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>
      <!--别名-->
      <typeAliases>
          <package name="com.bai.pojo"/>
      </typeAliases>
      <!--接口注册-->
      <mappers>
          <mapper class="com.bai.dao.BooksMapper"/>
      </mappers>
  </configuration>
  

• 数据库配置文件编写

  driver=com.mysql.cj.jdbc.Driver
  url=jdbc:mysql://localhost:3306/mybatis?useSSL=true&useUnicode=true&serverTimezone=GMT&characterEncoding=UTF-8
  username=root
  password=123456
  

3.Spring层

• spring-dao.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
          https://www.springframework.org/schema/beans/spring-beans.xsd
          http://www.springframework.org/schema/context
          https://www.springframework.org/schema/context/spring-context.xsd">
      <!--1.关联数据库配置文件-->
      <context:property-placeholder location="classpath:database.properties"/>
      <!--2.连接池-->
      <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
          <property name="driverClass" value="${driver}"/>
          <property name="jdbcUrl" value="${url}"/>
          <property name="user" value="${username}"/>
          <property name="password" value="${password}"/>
      </bean>
      <!--3.构建SqlSessionFactory-->
      <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
          <property name="dataSource" ref="dataSource"/>
          <property name="configLocation" value="classpath:mybatis-config.xml"/>
      </bean>
  
      <!--4.配置Dao接口扫描包，动态实现了Dao接口可以注入到spring容器中-->
      <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
          <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
          <property name="basePackage" value="com.bai.dao"/>
      </bean>
  </beans>
  

• application.xml整合

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

4.SpringMVC层

• spring-service.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:aop="http://www.springframework.org/schema/aop"
         xmlns:context="http://www.springframework.org/schema/context"
         xsi:schemaLocation="http://www.springframework.org/schema/beans
          https://www.springframework.org/schema/beans/spring-beans.xsd
          http://www.springframework.org/schema/aop
          https://www.springframework.org/schema/aop/spring-aop.xsd
          http://www.springframework.org/schema/context
          https://www.springframework.org/schema/context/spring-context.xsd">
      <!--1.扫描service下的包-->
      <context:component-scan base-package="com.bai.service"/>
      <!--2.将所有的业务类注入到spring中-->
      <bean id="BooksServiceImpl" class="com.bai.service.BooksServiceImpl">
          <property name="mapper" ref="booksMapper"/>
      </bean>
      <!--3.申明式事务配置-->
      <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
          <property name="dataSource" ref="dataSource"/>
      </bean>
      <!--4.aop事务支持-->
  </beans>
  

• spring-mvc.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"
         xmlns:mvc="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/context
          https://www.springframework.org/schema/context/spring-context.xsd
          http://www.springframework.org/schema/mvc
          https://www.springframework.org/schema/mvc/spring-mvc.xsd">
      <!--1.注解驱动-->
      <mvc:annotation-driven/>
      <!--2.静态资源过滤-->
      <mvc:default-servlet-handler/>
      <!--3.扫描包:controller-->
      <context:component-scan base-package="com.bai.controller"/>
      <!--4.视图解析器-->
      <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
          <property name="prefix" value="/WEB-INF/jsp/"/>
          <property name="suffix" value=".jsp"/>
      </bean>
  </beans>
  

• web.xml

  <?xml version="1.0" encoding="UTF-8"?>
  <web-app xmlns="https://jakarta.ee/xml/ns/jakartaee"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"
           version="5.0">
      <!--DispatchServlet-->
      <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:spring-mvc.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>
      <!--乱码过滤-->
      <filter>
          <filter-name>encodingFilter</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>
      <servlet-mapping>
          <servlet-name>encodingFilter</servlet-name>
          <url-pattern>/*</url-pattern>
      </servlet-mapping>
   <!--session-->
      <session-config>
          <session-timeout>15</session-timeout>
      </session-config>
  </web-app>