ssm(springMVC+spring+mybatis)三大框架整合

pom文件引入相关依赖

<?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>com.czy</groupId>
    <artifactId>ssm</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <dependencies>

        <!-- 持久层依赖开始 -->
        <!-- springIOC的依赖 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>5.3.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>5.3.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.8.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>5.3.1</version>
        </dependency>

        <!-- spring 事务管理和JDBC依赖包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.3.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.3.1</version>
        </dependency>
        <!-- mysql数据库驱动包 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.35</version>
        </dependency>
        <!-- dbcp连接池的依赖包 -->
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.4</version>
        </dependency>
        <!-- mybatis的依赖 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.5</version>
        </dependency>
        <!-- mybatis和spring的整合依赖 -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>

        <!-- 持久层依赖结束 -->

        <!-- 业务层依赖开始 -->
        <!-- aspectJ的依赖包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>5.3.1</version>
        </dependency>
        <dependency>
            <groupId>aopalliance</groupId>
            <artifactId>aopalliance</artifactId>
            <version>1.0</version>
        </dependency>

        <!-- 业务层依赖结束 -->

        <!-- 表现层依赖开始 -->
        <!-- springMVC依赖包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.9.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>5.2.9.RELEASE</version>
        </dependency>

        <!-- jstl 取决于视图对象是否是JSP -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
            <version>5.2.9.RELEASE</version>
        </dependency>

        <!-- 表现层直接返回json类型数据 -->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.12.0</version>
        </dependency>

        <!-- 表现层依赖结束 -->

        <!-- spring 单元测试组件包 -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.0.7.RELEASE</version>
        </dependency>

        <!-- 单元测试Junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>

        <!-- 文件上传 -->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
            <version>1.3.1</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <!-- 配置Maven的JDK编译级别 -->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.2</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>9.4.5.v20170502</version>
                <configuration>
                    <!--                    <webXml>web/WEB-INF/web.xml</webXml>-->
                    <!--自动扫描文件改变并进行热部署的时间间隔，单位为秒。默认值为0，这代表着禁用扫描并热部署，只有一个大于0的配置可以使它生效。-->
                    <scanIntervalSeconds>10</scanIntervalSeconds>
                    <!--可选择的配置，如果没有设置，Jetty将创建ServerConnector实例来监听8080端口。-->
                    <httpConnector>
                        <!--port：连接监听的端口，默认8080；-->
                        <port>8080</port>
                    </httpConnector>
                    <webApp>
                        <!--你web应用的根路径(访问路径)。默认设置为“/”，如果你可以设置一个路径在“/”下面，例如/mycontext-->
                        <contextPath>/ssm</contextPath>
                    </webApp>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

web.xml文件

<?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">

    <!-- 配置前端控制器，加载spring子容器 -->
    <servlet>
        <servlet-name>ssm</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring/springmvc.xml</param-value>
        </init-param>
        <load-on-startup>2</load-on-startup>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>ssm</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- 配置ContextLoaderListener监听器加载spring父容器-->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring/applicationContext-*.xml</param-value>
    </context-param>

    <!-- 监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
</web-app>

整合持久层

数据源配置文件

db.driverClassName=com.mysql.jdbc.Driver
db.url=jdbc:mysql:///ssm
db.username=root
db.password=root

配置持久层的mybatis框架

配置数据源，sqlSession工厂，扫描映射器并生成接口的代理对象等。需要注意的是，在IDEA中默认是无法编译src/main/java目录下的xml文件，一种解决方式是：解决方式是在pom文件配置下。还有一种方式是将sql映射文件放置在resources目录下，并且路径要于mybatis的接口文件所在包的路径保持一致。

<?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
                           http://www.springframework.org/schema/context/spring-context.xsd">

    <!-- 读取数据库配置文件，替换占位符数据 -->
    <context:property-placeholder location="classpath:db.properties" />

    <!-- 配置数据源 -->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName" value="${db.driverClassName}" />
        <property name="url" value="${db.url}" />
        <property name="username" value="${db.username}" />
        <property name="password" value="${db.password}" />
    </bean>

    <!-- 配置sqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据源 -->
        <property name="dataSource" ref="dataSource" />
        <!-- mybatis批量别名配置，将po包下所有的Java类型设置别名，不用指定全路径 -->
        <property name="typeAliasesPackage" value="com.czy.ssm.po" />
    </bean>

    <!-- 扫描指定包下的映射器，并为映射器生成代理对象-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 指定需要生成代理的接口所在的包名 -->
        <property name="basePackage" value="com.czy.ssm.mapper" />
    </bean>

</beans>

配置spring相关的配置文件

扫面业务bean，以及配置事务等。

<?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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       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/tx
                           http://www.springframework.org/schema/tx/spring-tx.xsd
                           http://www.springframework.org/schema/aop
                           http://www.springframework.org/schema/aop/spring-aop.xsd">

    <import resource="applicationContext-dao.xml" />
    <!-- 扫描业务bean -->
    <context:component-scan base-package="com.czy.ssm.service" />



    <!-- 配置平台事务管理器 -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- 事务通知 -->
    <!-- tx:advice：对应的处理器类就是TransactionInterceptor类（实现了MethodInterceptor） -->
    <!-- TransactionInterceptor类实现事务是通过transaction-manager属性指定的值进行事务管理 -->
    <tx:advice id="txAdvice"
               transaction-manager="transactionManager">
        <!-- 设置事务管理信息 -->
        <tx:attributes>
            <!-- 增删改使用REQUIRED事务传播行为 -->
            <!-- 查询使用read-only -->
            <tx:method name="save*" propagation="REQUIRED"/>
            <tx:method name="insert*" propagation="REQUIRED"/>
            <tx:method name="add*" propagation="REQUIRED"/>
            <tx:method name="create*" propagation="REQUIRED"/>
            <tx:method name="delete*" propagation="REQUIRED"/>
            <tx:method name="remove*" propagation="REQUIRED"/>
            <tx:method name="del*" propagation="REQUIRED"/>
            <tx:method name="update*" propagation="REQUIRED"/>
            <tx:method name="modify*" propagation="REQUIRED"/>
            <tx:method name="edit*" propagation="REQUIRED"/>
            <tx:method name="query*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="select*" read-only="true"/>
        </tx:attributes>
    </tx:advice>
    <!-- 基于AspectJ + XML方式实现声明式事务 -->
    <aop:config>
        <!-- aop:advisor标签使用的是传统spring aop开发方式实现的 -->
        <!-- spring已经实现了该增强功能，spring使用的是实现MethodInterceptor接口的方式实现的 -->
        <aop:advisor advice-ref="txAdvice"
                     pointcut="execution(* *..*.*ServiceImpl.*(..))" />
    </aop:config>
</beans>

配置springMVC相关的配置文件

扫描控制器bean，注册并注入适配器和映射器等bean。以及试图解析器等。

<?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
                           http://www.springframework.org/schema/context/spring-context.xsd
                           http://www.springframework.org/schema/mvc
                           http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!-- 处理器类的扫描 -->
    <context:component-scan base-package="com.czy.ssm.controller" />

    <!-- 配置注解的适配器和映射器，同时还注入了很多其他的bean -->
    <!-- 处理器适配器会去调用conversion-service -->
    <mvc:annotation-driven />

    <!-- 显式的配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>


    <!-- 配置自定义的转换服务 -->
    <!--<bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
        <property name="converters">
            <set>
                &lt;!&ndash; 自定义日期类型转换器 &ndash;&gt;
                <bean class="com.czy.ssm.controller.converter.DateConverter"></bean>
            </set>
        </property>
    </bean>-->

    <!-- 配置异常处理器 -->
<!--    <bean class="com.czy.ssm.exception.resolver.CustomExceptionResolver"></bean>-->
<!--
    &lt;!&ndash; 配置多部件解析器 &ndash;&gt;
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        &lt;!&ndash; 限制上传文件的大小 单位是byte&ndash;&gt;
        <property name="maxUploadSize" value="5000000"></property>
    </bean>-->
</beans>

项目结构图