完整SSM框架整合

最新推荐文章于 2023-01-30 17:24:40 发布

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最新推荐文章于 2023-01-30 17:24:40 发布

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分类专栏：框架整合文章标签： mybatis spring mysql

本文链接：https://blog.youkuaiyun.com/qq_43275467/article/details/105869360

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本文详细介绍了如何进行SSM框架（Spring、SpringMVC、Mybatis）的整合，包括环境搭建，依赖导入，数据库配置，Mybatis与Spring的整合，以及SpringMVC、业务层和服务的配置整合。

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1.环境搭建

1.1导入依赖包

<!--导入依赖:junit、数据库驱动、数据库连接池、servelt、jsp、mybatis、mybatis-spring、spring -->
    <dependencies>
        <!--导入依赖spring-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.4.RELEASE</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.2.4.RELEASE</version>
        </dependency>

        <!--导入依赖servlet-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>
        <!--导入依赖junit测试-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <!--导入依赖 mysql驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.46</version>
        </dependency>
        <!--导入依赖 数据库连接池-->
        <dependency>
            <groupId>com.mchange</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.5.2</version>
        </dependency>
        <!--导入依赖 mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.4</version>
        </dependency>
        <!--导入依赖 mybatis与spring整合-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>2.0.4</version>
        </dependency>
    </dependencies>

1.2 静态资源导出

<!--静态资源导出问题-->
    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

2.配置文件

2.1 db.properties数据库资源配置

jdbc.driverClass=com.mysql.jdbc.Driver
jdbc.connectionURL=jdbc:mysql://localhost:3306/mydata?useUnicode=true&characterEncoding=utf-8
jdbc.userId=root
jdbc.password=123456

2.2 mybatis核心文件

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">
<configuration>

    <typeAliases>
        <package name="com.mvc.pojo"/>
    </typeAliases>

    <mappers>
        <mapper class="com.mvc.dao.BooksMapper"/>
    </mappers>

</configuration>

2.3 mybatis整合spring

spring-mybatis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       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
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context.xsd
                           ">

    <!-- 引入jdbc配置文件 -->
    <context:property-placeholder location="classpath:db.properties" />

    <!--c3p0数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driverClass}" />
        <property name="jdbcUrl" value="${jdbc.connectionURL}" />
        <property name="user" value="${jdbc.userId}" />
        <property name="password" value="${jdbc.password}" />

        <!--最大连接池 -->
        <property name="maxPoolSize" value="30" />
        <!--最小连接池 -->
        <property name="minPoolSize" value="10" />
        <!--关闭连接后不自动commit -->
        <property name="autoCommitOnClose" value="false" />
        <!--获取连接超时时间 -->
        <property name="checkoutTimeout" value="10000" />
        <!--当前连接失败 尝试连接次数 -->
        <property name="acquireRetryAttempts" value="2" />
    </bean>

    <!-- 配置spring与mybatis结合 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 绑定Mybatis配置文件文件 -->
        <property name="configLocation" value="classpath:mybatis-config.xml"/>
    </bean>

    <!-- DAO接口所在包名，Spring会自动查找其下的类 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        <property name="basePackage" value="com.mvc.dao" />
    </bean>

</beans>

2.4 springMVC核心文件

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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
		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-4.0.xsd">

    <!--SpringMVC只是控制网站跳转逻辑  -->
    <!-- 只扫描控制器 -->
    <context:component-scan base-package="com.mvc.controller">
    </context:component-scan>

    <!--自动开启处理器和适配器-->
    <mvc:annotation-driven>

    </mvc:annotation-driven>
    <!--让spring不处理静态资源-->
    <mvc:default-servlet-handler/>

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

</beans>

2.5 业务层配置整合

spring-service.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       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
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
">

    <!--扫描service包-->
    <context:component-scan base-package="com.mvc.service"/>

    <!--将我们的业务类注入到spring   通过配置或者注入的方式-->
    <bean id="BookServiceImpl" class="com.mvc.service.BookServiceImpl">
        <property name="booksMapper" ref="booksMapper"/>
    </bean>


    <!-- Spring事务控制(注解配置) -->
    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <!-- 这个必须配置，否则事物不起作用 -->
    <!-- 支持@Transactional注解支持 -->
    <!-- 带有@Transactional标记的方法会自动调用txManager管理事务 -->

</beans>

2.6 统一整合

applicationContext.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">


    <import resource="classpath:spring-mybatis.xml"/>

    <import resource="classpath:spring-service.xml"/>

    <import resource="classpath:spring-mvc.xml"/>

</beans>