SSM框架运行原理及配置文件

it2024-10-11  41

pom.xml

<?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>orchid.ssm</groupId> <artifactId>ssm</artifactId> <packaging>pom</packaging> <version>1.0-SNAPSHOT</version> <!--依赖:JUnit、数据库驱动、连接池、Servlet、jsp、mybatis、mybatis-spring、spring--> <dependencies> <!--JUnit--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <!--数据库驱动--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.2</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> <!--Mybatis与spring整合jar包--> <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> <!--lombok--> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.2</version> </dependency> </dependencies> <!--静态资源导出问题--> <build> <!--保证各级子目录下的资源文件被打包--> <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> <plugins> <!-- java编译插件 --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.7.0</version> <configuration> <source>1.8</source> <target>1.8</target> <encoding>UTF-8</encoding> </configuration> </plugin> </plugins> </build> <modules> <module>ssm_dao</module> <module>ssm_domain</module> <module>ssm_service</module> <module>ssm_utils</module> <module>ssm_web</module> </modules> </project>

web.xml

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <display-name>Archetype Created Web Application</display-name> <!--1.前端控制器(加载classpath:spring-mvc.xml 服务器启动创建Servlet)--> <!-- servlet 标签给 Tomcat 配置 Servlet 程序 --> <servlet> <!--servlet-name 标签 Servlet 程序起一个别名(一般是类名) --> <servlet-name>dispatcherServlet</servlet-name> <!--servlet-class 是 Servlet 程序的全类名--> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--配置初始化参数,创建完DispatcherServlet对象,加载springmvc.xml配置文件--> <init-param> <param-name>contextConfigLocation</param-name> <!--applicationContext.xml中导入了springmvc.xml配置文件--> <param-value>classpath:applicationContext.xml</param-value> </init-param> <!--服务器启动的时候,让DispatcherServlet对象创建--> <load-on-startup>1</load-on-startup> </servlet> <!--servlet-mapping 标签给 servlet 程序配置访问地址--> <servlet-mapping> <!--servlet-name 标签的作用是告诉服务器,我当前配置的地址给哪个 Servlet 程序使用--> <servlet-name>dispatcherServlet</servlet-name> <!--url-pattern 标签配置访问地址 / 斜杠在服务器解析的时候,表示地址为:http://ip:port/工程路径 --> <url-pattern>/</url-pattern> </servlet-mapping> <!--2.解决中文乱码过滤器--> <filter> <!--给 filter 起一个别名--> <filter-name>characterEncodingFilter</filter-name> <!--配置 filter 的全类名--> <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 配置 Filter 过滤器的拦截路径--> <filter-mapping> <!--filter-name 表示当前的拦截路径给哪个 filter 使用--> <filter-name>characterEncodingFilter</filter-name> <!--url-pattern 配置拦截路径 / 表示请求地址为:http://ip:port/工程路径/ 映射到 IDEA 的 web 目录--> <url-pattern>/*</url-pattern> </filter-mapping> <!--3.设置session有效时间--> <session-config> <session-timeout>15</session-timeout> </session-config> <!--4.声明应用范围(整个WEB项目)内的上下文初始化参数,配置加载类路径的配置文件 spring-security.xml可以在applicationContext.xml中引入,不应在spring-mvc.xml中引入 applicationContext.xml相当于父容器,spring-mvc.xml相当于子容器 子容器可以访问父容器,父容器不能访问子容器 如果外界需要访问父容器则应该从子容器中去访问 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- 5.配置监听器,可以使spring随项目的创建而创建,随项目的关闭而关闭,避免创建多个applicationContext, 默认会以 /WEB-INF/applicationContext.xml作为配置文件 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!--配置监听器,监听request域对象的创建和销毁--> <listener> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <!--定制错误页面,根据错误码选择出现错误时的跳转文件。<exception-type>可以捕捉未设置错误码的跳转文件--> <!-- <error-page> <error-code>403</error-code> <location>/403.jsp</location> </error-page> <error-page> <exception-type>java.io.IOException</exception-type> <location>/errorIO.html</location> </error-page> --> <!--指定默认加载页面--> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app>

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

spring-mybatis.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" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd "> <!--Spring整合Mybatis 1.关联数据库配置文件 (可省略) 2.配置连接池 (可省略) 3.SQLSessionFactory 4.配置dao接口扫描包,动态实现了dao接口注入到spring容器中 --> <!--1.关联数据库配置文件--> <context:property-placeholder location="classpath:db.properties"></context:property-placeholder> <!--2.连接池 dbcp:半自动化操作,不能自动连接 c3p0:自动化操作(自动化加载配置文件,自动设置到对象中) druid、hikari --> <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"> <property name="driverClass" value="${jdbc.driverClassName}"></property> <property name="jdbcUrl" value="${jdbc.url}"></property> <property name="user" value="${jdbc.username}"></property> <property name="password" value="${jdbc.password}"></property> <!--c3p0连接池最大连接数--> <property name="maxPoolSize" value="30"></property> <!--c3p0连接池最小连接数--> <property name="minPoolSize" value="10"></property> <!--关闭连接后不自动连接--> <property name="autoCommitOnClose" value="false"></property> <!--获取连接超时时间--> <property name="checkoutTimeout" value="1000"></property> <!--当获取连接失败后重连次数--> <property name="acquireRetryAttempts" value="2"></property> </bean> <!--3.SQLSessionFactory--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!--注入数据源--> <property name="dataSource" ref="dataSource"></property> <!--绑定Mybatis的配置文件--> <property name="configLocation" value="classpath:mybatis-config.xml"></property> </bean> <!--4.配置dao接口扫描包,动态实现了dao接口注入到spring容器中,如果没有发现注解,则查找映射文件xxx.xml--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--注入sqlSessionFactory--> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property> <!--需要扫描的dao包--> <property name="basePackage" value="orchid.dao"></property> </bean> </beans>

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" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd "> <!--Spring整合Service 1.扫描service包 2.将我们所有的业务类,注入到spring中(xml/annotation) 3.声明式事务配置 4.开启对注解事务的支持 --> <!--1.扫描service包,如果某个类的头上带有特定的注解 @Component,@Repository,@Service,@Controller,就会将这个对象作为Bean注册进Spring容器。--> <!--<context:component-scan base-package="orchid.service"></context:component-scan>--> <!--2.将我们所有的业务类,注入到spring中(xml),类上使用了@Service则可以省略此步骤--> <bean id="BookServiceImpl" class="orchid.service.impl.BookServiceImpl"> <property name="bookDao" ref="IBookDao"></property> </bean> <!--3.声明式事务配置--> <bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!--注入数据源--> <property name="dataSource" ref="dataSource"></property> </bean> <!--4.开启对注解事务的支持或者在类上使用@EnableTransactionManagement,作用是使@Transactional生效--> <!--<tx:annotation-driven transaction-manager="dataSourceTransactionManager" />--> </beans>

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,可以将请求参数绑定到控制器参数(处理请求映射,决定是哪个controller的哪个方法来处理当前请求,异常处理)--> <mvc:annotation-driven></mvc:annotation-driven> <!--2.静态资源过滤,如果发现是静态资源的请求,就将该请求转由Web应用服务器默认的Servlet处理, 如果不是静态资源的请求,才由DispatcherServlet分发器继续处理,转由我们自己编写的Servlet处理。--> <mvc:default-servlet-handler></mvc:default-servlet-handler> <!--3.需要扫描注解的包:controller,使包下的@Component,@Repository,@Service,@Controller,@Autowired,@Resource,@PostConstruct,@PreDestroy,@PersistenceContext,@Required生效--> <context:component-scan base-package="orchid.controller"></context:component-scan> <!--4.视图解析器--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!--自动给后面action的方法return的字符串加上前缀和后缀,变成一个可用的url地址 --> <property name="prefix" value="/WEB-INF/page/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
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