新建一個普通的Maven項目

基本目錄結構

├── src # │ ├── main # │ │└── java # java代碼目錄│ │└── resources # 配置文件目錄, 存放下面Spring配置文件│ ├── test # 單元測試目錄├── web # web目錄│ └── WEB-INF # web.xml 配置文件目錄1. Mybatis層編寫

1、在 resources 目錄下新建數據庫配置文件 database.properties

jdbc.driver=com.mysql.jdbc.Driver# 如果是使用 MySQL8.0+ 那么還需要增加一個時區的配置; serverTimezone=Asia/Shanghaijdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8jdbc.username=rootjdbc.password=123456

2、在 resources 目錄下創建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> <!--配置數據源, 交給Spring--> <!--配置log--> <settings> <!--STDOUT_LOGGING: 標準的日志工廠實現--> <setting name='logImpl' value='STDOUT_LOGGING'/> </settings> <!--配置別名--> <typeAliases> <package name='com.pro.pojo'/> </typeAliases> <!--綁定Mapper--> <mappers> <mapper /> </mappers></configuration>2. Spring層編寫

1. Spring整合Mybatis

配置Spring整合MyBatis，這里數據源使用c3p0連接池；

編寫Spring整合Mybatis的相關的配置文件；在 resources 目錄下創建 spring-dao.xml

注意：這里要引入上面Mybatis層的兩個配置文件，配置文件的名稱不要寫錯

<?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. 關聯數據庫配置文件--> <context:property-placeholder location='classpath:database.properties'/> <!--2. 連接池 dbcp: 半自動化操作, 不能自動連接 c3p0: 自動化操作 (自動加載配置文件并設置到對象中) druid, hikari --> <bean 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連接池的私有屬性, 最大最小連接池大小--> <property name='maxPoolSize' value='30'/> <property name='minPoolSize' value='10'/> <!--關閉連接后不自動commit--> <property name='autoCommitOnClose' value='false'/> <!--連接超時--> <property name='checkoutTimeout' value='10000'/> <!--獲取連接失敗重試次數--> <property name='acquireRetryAttempts' value='2'/> </bean> <!--3. sqlSessionFactory--> <bean class='org.mybatis.spring.SqlSessionFactoryBean'> <property name='dataSource' ref='dataSource'/> <!--綁定Mybatis配置文件--> <property name='configLocation' value='classpath:mybatis-config.xml'/> </bean> <!--4. 配置Dao掃描包, 動態實現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'/> <!--配置要掃描的dao包--> <property name='basePackage' value='com.pro.dao'/> </bean></beans>

2. Spring整合service

將業務層的類注入到Spring中，在 resources 目錄下創建 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. 掃描service下的包--> <context:component-scan base-package='com.pro.service'/> <!--2. 將業務層的類注入到Spring中--> <bean class='com.pro.service.BooksServiceImpl'> <property name='booksMapper' ref='booksMapper'/> </bean> <!--3. 配置聲明式事務--> <bean class='org.springframework.jdbc.datasource.DataSourceTransactionManager'> <!--注入數據源--> <property name='dataSource' ref='dataSource'/> </bean> <!--4. 配置aop實現事務織入--> <!--配置事務通知--> <tx:advice transaction-manager='transactionManager'> <!--1. 給那些方法配置事務--> <!--2. 配置事務的傳播特性: propagation--> <tx:attributes> <tx:method name='*' propagation='REQUIRED'/> </tx:attributes> </tx:advice> <!--配置事務切入--> <aop:config> <!--mapper包下的所有類的所有方法--> <aop:pointcut expression='execution(* com.pro.dao.*.*(..))'/> <aop:advisor advice-ref='txAdvice' pointcut-ref='txPointCut'/> </aop:config></beans>3. SpringMVC層編寫

1. 編寫web.xml

修改 WEB-INF 下的 web.xml 文件

這里引入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> <!--加載Spring配置文件--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </init-param> <!--啟動級別--> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--亂碼過濾--> <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過期時間--> <session-config> <session-timeout>15</session-timeout> </session-config></web-app>

2. 編寫spring-mvc.xml

在 resources 目錄下創建 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. 注解驅動--> <mvc:annotation-driven/> <!--2. 靜態資源過濾--> <mvc:default-servlet-handler/> <!--3. 掃描包: controller--> <context:component-scan base-package='com.pro.controller'/> <!--4. 視圖解析器--> <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 目錄下創建 applicationContext.xml

這里引入上面三個配置文件 spring-dao.xml、spring-service.xml、spring-mvc.xml 整合成一個總的配置文件

<?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>

依賴

<!--依賴--><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> <!--數據庫驅動--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.47</version> </dependency> <!--數據庫連接池--> <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><!--靜態資源導出問題--><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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