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
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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