Spring整合SpringMVC + Mybatis基础框架的配置文件

2023-08-17 08:05:04

前言
1. Mybatis层编写
2. Spring层编写
- 1. Spring整合Mybatis
- 2. Spring整合service
3. SpringMVC层编写
- 1. 编写web.xml
- 2. 编写spring-mvc.xml
4. Spring配置整合文件，applicationContext.xml
依赖

前言

新建一个普通的Maven项目

基本目录结构

├── src                   	#

│   ├── main               	#

│   │	└── java           	# java代码目录

│   │	└── resources       # 配置文件目录, 存放下面Spring配置文件

│   ├── test           		# 单元测试目录

├── web                   	# web目录

│   └── WEB-INF           	# web.xml 配置文件目录

1. Mybatis层编写

1、在 resources 目录下新建数据库配置文件 database.properties

jdbc.driver=com.mysql.jdbc.Driver

# 如果是使用 MySQL8.0+ 那么还需要增加一个时区的配置; serverTimezone=Asia/Shanghai

jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8

jdbc.username=root

jdbc.password=123456

2、在 resources 目录下创建Mybatis配置文件 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>

    <!--配置数据源, 交给Spring-->

    <!--配置log-->

    <settings>

        <!--STDOUT_LOGGING: 标准的日志工厂实现-->

        <setting name="logImpl" value="STDOUT_LOGGING"/>

    </settings>

    <!--配置别名-->

    <typeAliases>

        <package name="com.pro.pojo"/>

    </typeAliases>

    <!--绑定Mapper-->

    <mappers>

        <mapper class="com.pro.dao.BooksMapper"/>

    </mappers>

</configuration>

2. Spring层编写

1. Spring整合Mybatis

配置Spring整合MyBatis，这里数据源使用c3p0连接池；
编写Spring整合Mybatis的相关的配置文件；在 resources 目录下创建 spring-dao.xml

注意：这里要引入上面Mybatis层的两个配置文件，配置文件的名称不要写错

<?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">

    <!--1. 关联数据库配置文件-->

    <context:property-placeholder location="classpath:database.properties"/>

    <!--2. 连接池

        dbcp: 半自动化操作, 不能自动连接

        c3p0: 自动化操作 (自动加载配置文件并设置到对象中)

        druid, hikari

    -->

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">

        <property name="driverClass" value="${jdbc.driver}"/>

        <property name="jdbcUrl" value="${jdbc.url}"/>

        <property name="user" value="${jdbc.username}"/>

        <property name="password" value="${jdbc.password}"/>

        <!--c3p0连接池的私有属性, 最大最小连接池大小-->

        <property name="maxPoolSize" value="30"/>

        <property name="minPoolSize" value="10"/>

        <!--关闭连接后不自动commit-->

        <property name="autoCommitOnClose" value="false"/>

        <!--连接超时-->

        <property name="checkoutTimeout" value="10000"/>

        <!--获取连接失败重试次数-->

        <property name="acquireRetryAttempts" value="2"/>

    </bean>

    <!--3. sqlSessionFactory-->

    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">

        <property name="dataSource" ref="dataSource"/>

        <!--绑定Mybatis配置文件-->

        <property name="configLocation" value="classpath:mybatis-config.xml"/>

    </bean>

    <!--4. 配置Dao扫描包, 动态实现Dao接口注入到Spring容器中-->

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">

        <!--注入 sqlSessionFactory-->

        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>

        <!--配置要扫描的dao包-->

        <property name="basePackage" value="com.pro.dao"/>

    </bean>

</beans>

2. Spring整合service

将业务层的类注入到Spring中，在 resources 目录下创建 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:context="http://www.springframework.org/schema/context"

       xmlns:aop="http://www.springframework.org/schema/aop"

       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/aop

       http://www.springframework.org/schema/aop/spring-aop.xsd

       http://www.springframework.org/schema/tx

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

    <!--1. 扫描service下的包-->

    <context:component-scan base-package="com.pro.service"/>

    <!--2. 将业务层的类注入到Spring中-->

    <bean id="BooksServiceImpl" class="com.pro.service.BooksServiceImpl">

        <property name="booksMapper" ref="booksMapper"/>

    </bean>

    <!--3. 配置声明式事务-->

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

        <!--注入数据源-->

        <property name="dataSource" ref="dataSource"/>

    </bean>

    <!--4. 配置aop实现事务织入-->

    <!--配置事务通知-->

    <tx:advice id="txAdvice" transaction-manager="transactionManager">

        <!--1. 给那些方法配置事务-->

        <!--2. 配置事务的传播特性: propagation-->

        <tx:attributes>

            <tx:method name="*" propagation="REQUIRED"/>

        </tx:attributes>

    </tx:advice>

    <!--配置事务切入-->

    <aop:config>

        <!--mapper包下的所有类的所有方法-->

        <aop:pointcut id="txPointCut" expression="execution(* com.pro.dao.*.*(..))"/>

        <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"/>

    </aop:config>

</beans>

3. SpringMVC层编写

1. 编写web.xml

修改 WEB-INF 下的 web.xml 文件

这里引入Spring整合的配置文件 applicationContext.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>

        <!--加载Spring配置文件-->

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>classpath:applicationContext.xml</param-value>

        </init-param>

        <!--启动级别-->

        <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>

    <filter-mapping>

        <filter-name>encodingFilter</filter-name>

        <url-pattern>/*</url-pattern>

    </filter-mapping>

    <!--Session过期时间-->

    <session-config>

        <session-timeout>15</session-timeout>

    </session-config>

</web-app>

2. 编写spring-mvc.xml

在 resources 目录下创建 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:mvc="http://www.springframework.org/schema/mvc"

       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/mvc

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

       http://www.springframework.org/schema/context

       https://www.springframework.org/schema/context/spring-context.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.pro.controller"/>

    <!--4. 视图解析器-->

    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/jsp/"/>

        <property name="suffix" value=".jsp"/>

    </bean>

</beans>

4. Spring配置整合文件，applicationContext.xml

在 resources 目录下创建 applicationContext.xml

这里引入上面三个配置文件 spring-dao.xml、spring-service.xml、spring-mvc.xml 整合成一个总的配置文件

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

       xsi:schemaLocation="http://www.springframework.org/schema/beans

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

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

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

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

</beans>

依赖

<!--依赖-->

<dependencies>

    <dependency>

        <groupId>org.projectlombok</groupId>

        <artifactId>lombok</artifactId>

        <version>1.18.10</version>

    </dependency>

    <!--Junit-->

    <dependency>

        <groupId>junit</groupId>

        <artifactId>junit</artifactId>

        <version>4.13</version>

    </dependency>

    <!--数据库驱动-->

    <dependency>

        <groupId>mysql</groupId>

        <artifactId>mysql-connector-java</artifactId>

        <version>5.1.47</version>

    </dependency>

    <!--数据库连接池-->

    <dependency>

        <groupId>com.mchange</groupId>

        <artifactId>c3p0</artifactId>

        <version>0.9.5.2</version>

    </dependency>

    <!--Servlet - JSP -->

    <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>

    <!--Mybatis-->

    <dependency>

        <groupId>org.mybatis</groupId>

        <artifactId>mybatis</artifactId>

        <version>3.5.2</version>

    </dependency>

    <dependency>

        <groupId>org.mybatis</groupId>

        <artifactId>mybatis-spring</artifactId>

        <version>2.0.2</version>

    </dependency>

    <!--Spring-->

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-webmvc</artifactId>

        <version>5.1.9.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.springframework</groupId>

        <artifactId>spring-jdbc</artifactId>

        <version>5.1.9.RELEASE</version>

    </dependency>

    <dependency>

        <groupId>org.aspectj</groupId>

        <artifactId>aspectjweaver</artifactId>

        <version>1.9.4</version>

    </dependency>

</dependencies>

<!--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>

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前言