SSM框架搭建总结（重点）

1、添加jar包

<dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>

    <!-- 加入ServletAPI -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>

    <!-- MySQL依赖 start -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.38</version>
    </dependency>

    <!-- 加入MyBatis 依赖 start -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.2.8</version>
    </dependency>

    <!-- 引入Spring(包含SpringMVC) 依赖 start -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-oxm</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>
   <!--事务依赖包-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>


    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.0.8.RELEASE</version>
    </dependency>

    <!-- 引用c3p0 依赖 start
      <dependency>
          <groupId>com.mchange</groupId>
          <artifactId>c3p0</artifactId>
          <version>0.9.2.1</version>
      </dependency>
       -->
    <!-- 引用插件依赖：MyBatis整合Spring,如果mybatis版本在3.4及以上版本
       mybatis-spring的版本要在1.3以上   -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.2.2</version>
    </dependency>

    <!-- JSTL -->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>

    <!-- 德鲁伊数据连接池 -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.0.9</version>
    </dependency>

    <!-- pagehelper -->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>4.1.6</version>
    </dependency>
    <!--处理json-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.5</version>
    </dependency>
    <!--导出excel-->
    <dependency>
      <groupId>org.apache.poi</groupId>
      <artifactId>poi</artifactId>
      <version>3.6</version>
    </dependency>
    <!--javaee-->
    <dependency>
      <groupId>javax</groupId>
      <artifactId>javaee-api</artifactId>
      <version>7.0</version>
      <scope>provided</scope>
    </dependency>
    <!--文件上传下载-->
    <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>


    <!--- Activiti依赖导入 -->
    <dependency>
      <groupId>org.activiti</groupId>
      <artifactId>activiti-spring</artifactId>
      <version>5.18.0</version>
    </dependency>
    <dependency>
      <groupId>org.activiti</groupId>
      <artifactId>activiti-engine</artifactId>
      <version>5.18.0</version>
      <exclusions>
        <exclusion>
          <artifactId>slf4j-api</artifactId>
          <groupId>org.slf4j</groupId>
        </exclusion>
        <exclusion>
          <artifactId>spring-beans</artifactId>
          <groupId>org.springframework</groupId>
        </exclusion>
        <exclusion>
          <artifactId>jackson-core-asl</artifactId>
          <groupId>org.codehaus.jackson</groupId>
        </exclusion>
        <exclusion>
          <artifactId>commons-lang3</artifactId>
          <groupId>org.apache.commons</groupId>
        </exclusion>
      </exclusions>
    </dependency>
  </dependencies>

2、配置web.xml文件

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://java.sun.com/xml/ns/javaee"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">

  <display-name>Archetype Created Web Application</display-name>

  <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:applicationContext.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>springMvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <filter>
    <filter-name>aa</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>aa</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>
</web-app>

3、配置mybatis-config文件

<?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>
    <plugins>
        <!-- 分页插件配置 PageHelper4.1.6 -->
        <plugin interceptor="com.github.pagehelper.PageHelper">
            <property name="dialect" value="mysql"/>
        </plugin>
    </plugins>
</configuration>

4、配置applicationContext.xml文件(Spring 配置文件)

<?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:p="http://www.springframework.org/schema/p"
       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/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">

    <!--1、创建数据源，使用spring连接数据库-->
    <bean id="db" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
        <property name="url" value="jdbc:mysql://localhost:3306/test"></property>
        <property name="username" value="root"></property>
        <property name="password" value="root"></property>
    </bean>

    <!--2、扫描注解包-->
    <context:component-scan base-package="com"></context:component-scan>

    <!--3、创建视图解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <!--4、加载注解驱动，会自动注册RequestMappingHandlerMapping与RequestMappingHandlerAdapter两个Bean,这是Spring MVC为@Controller分发请求所必需的-->
    <mvc:annotation-driven></mvc:annotation-driven>

    <!--5、创建sqlSession工厂-->
    <bean id="fac" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="db"></property>
        <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
        <property name="configLocation" value="classpath:mybatis-config.xml"></property>
    </bean>

<!--    &lt;!&ndash;6、使用dao层实现类时，需要得到sqlSessionTemplate&ndash;&gt;-->
<!--    <bean id="temp" class="org.mybatis.spring.SqlSessionTemplate">-->
<!--        <constructor-arg index="0" ref="fac"></constructor-arg>-->
<!--    </bean>-->
<!--    -->

    <!--6、省略实现类  省略dao层实现类(使用MapperScannerConfigurer替代SqlSessionTemplate):-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--扫描com.fan.dao这个dao层-->
        <property name="basePackage" value="com.fan.dao"></property>
        <property name="sqlSessionFactoryBeanName" value="fac"></property>
    </bean>

    <!--7、配置事务-->
    <bean id="tx" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="db"></property>
    </bean>
    <tx:advice id="ad" transaction-manager="tx"></tx:advice>

    <!--8、配置静态资源-->
    <mvc:default-servlet-handler></mvc:default-servlet-handler>
</beans>

5、系统的整体架构图：

整体架构