SSM整合（保姆级教程，新手必看）

于 2024-03-27 21:01:32 发布
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前言：小伙伴们在学习完Spring、SpringMVC、MyBatis后，对于各个框架都有了系统的认知，对各个分工也有了初步的了解，但是在进行企业级项目开发时，我们需要将Spring、SpringMVC、MyBatis框架整合起来，共同完成开发工作。这是必须的，也是需要强制熟练运用并掌握的。

一：SSM基础分工

  1. Spring 作为基础框架，整合其他框架

  2. SpringMVC 作为Web开发框架，提供服务器开发支持

  3. MyBatis 作为ORM框架，提供数据库开发支持

 二：导入依赖

  <dependencies>
    <!--SpringMVC依赖 该依赖会自动导入spring的相关依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.3.33</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.3.33</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.3.33</version>
    </dependency>

    <dependency>
      <groupId>javax.activation</groupId>
      <artifactId>javax.activation-api</artifactId>
      <version>1.2.0</version>
    </dependency>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>4.0.1</version>
    </dependency>
    <!--Mybatis依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.14</version>
    </dependency>
    <!--Mybatis对 Spring的支持依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>2.1.2</version>
    </dependency>
    <!--Mybatis 分页插件依赖-->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>5.3.3</version>
    </dependency>
    <!--德鲁伊连接池依赖-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.2.22</version>
    </dependency>
    <!--MySQL 8.0依赖-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.33</version>
    </dependency>
    <!--通过注解简化Java开发的依赖-->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.18.32</version>
    </dependency>
    <!--spring的测试依赖-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.3.33</version>
    </dependency>
    <!--JSON依赖-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.16.1</version>
    </dependency>
    <!--junit依赖-->
    <dependency>
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter</artifactId>
      <version>5.10.2</version>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupId>org.jetbrains</groupId>
      <artifactId>annotations</artifactId>
      <version>24.1.0</version>
      <scope>compile</scope>
    </dependency>
  </dependencies>

 三：构建项目

 四：配置xml

  1. spring-context.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.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
        <context:component-scan base-package="com.qf.mvc"/>
        <import resource="spring-mvc.xml"/>
</beans>

​
  2. 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">
<!--MyBatis配置-->
<configuration>
    <plugins>
        <plugin interceptor="com.github.pagehelper.PageInterceptor">
            <!--分页参数合理化-->
            <property name="reasonable" value="true"/>
        </plugin>
    </plugins>
</configuration>
  3.  spring-mybatis.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="druidDataSource"/>
    <property name="mapperLocations" value="classpath:mapper/**/*.xml"/>
    <property name="configLocation" value="classpath:mybatis-config.xml"/>

</bean>

<bean id="configuration" class="org.apache.ibatis.session.Configuration">
    <property name="mapUnderscoreToCamelCase" value="true"/>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.qf.mvc.mapper"/>
    <property name="sqlSessionFactoryBeanName" value="sessionFactory"/>

</bean>
</beans>
  4. spring-druid.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd">
    <bean id="druidDataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">
        <property name="url" value="jdbc:mysql://localhost:3306/spring-ioc?useUnicode=true&amp;characterEncoding=utf8"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
        <property name="maxActive" value="20"/>
    </bean>
</beans>
  5. 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 http://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">
    <!--扫描控制器包目录-->
    <context:component-scan base-package="com.qf.mvc.controller"/>
    <!--开启控制层注解支持-->
    <mvc:annotation-driven>
        <!--导入JS0N依赖相关东西-->
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                <!--全局时间设置-->
                <property name="objectMapper'">
                    <bean class="com.fasterxml.jackson.databind.ObjectMapper">
                        <property name="dateFormat">
                            <bean class="java.text.SimpleDateFormat">
                                <constructor-arg type="java.lang.String" value="yyyy-MM-dd HH:mm:ss"/>
                            </bean>
                        </property>
                    </bean>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>
    <!--拦截器-->
    <mvc:default-servlet-handler/>
    <!--视图解析器-->
    <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"/>
        <property name="suffix" value=".jsp"/>
    </bean>
    <!--处理中文乱码-->
    <bean id="characterEncodingFilter" class="org.springframework.web.filter.CharacterEncodingFilter">
        <property name="encoding" value="UTF-8"/>
        <property name="forceEncoding" value="true"/>
    </bean>

</beans>

​

  6. web.xml 
    <!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <servlet>
    <servlet-name>dispatcherServlet</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>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

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