<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.18</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.48</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.8.8</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.3</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
1. MVC框架提供了控制器(Controller)调用Service
DAO ---》 Service
2. 请求响应的处理
3. 接受请求参数 request.getParameter("")
4. 控制程序的运行流程
5. 视图解析 (JSP JSON Freemarker Thyemeleaf )
1. struts1
2. webwork
3. jsf
4. struts2
5. springMVC
1. Web开发过程中如何创建工厂
ApplicationContext ctx = new ClassPathXmlApplicationContext("/applicationContext.xml");
WebXmlApplicationContext()
2. 如何保证工厂唯一同时被共用
被共用:Web request|session|ServletContext(application)
工厂存储在ServletContext这个作用域中 ServletContext.setAttribute("xxxx",ctx);
唯一:ServletContext对象 创建的同时 ---》 ApplicationContext ctx = new ClassPathXmlApplicationContext("/applicationContext.xml");
ServletContextListener ---> ApplicationContext ctx = new ClassPathXmlApplicationContext("/applicationContext.xml");
ServletContextListener 在ServletContext对象创建的同时,被调用(只会被调用一次) ,把工厂创建的代码,写在ServletContextListener中,也会保证只调用
一次,最终工厂就保证了唯一性
3. 总结
ServletContextListener(唯一)
ApplicationContext ctx = new ClassPathXmlApplicationContext("/applicationContext.xml");
ServletContext.setAttribute("xxx",ctx) (共用)
4. Spring封装了一个ContextLoaderListener
1. 创建工厂
2. 把工厂存在ServletContext中
ContextLoaderListener使用方式
web.xml
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
依赖注入:把Sevice对象注入个控制器对象。

1. Struts2中的Action需要通过Spring的依赖注入获得Service对象。
搭建开发环境
引入相关jar (Spring Struts2)
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-spring-plugin</artifactId>
<version>2.3.8</version>
</dependency>
引入对应的配置文件
初始化配置
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
编码
开发Service对象
最终在Spring配置文件中创建Service对象
<bean id="userService" class="com.baizhi.struts2.UserServiceImpl"/>
开发Action对象
开发类
public class RegAction implements Action{
private UserService userService;
set get
public String execute(){
userService.register();
return Action.SUCCESS;
}
}
Spring (applicationContext.xml)
<bean id="regAction" class="com.baizhi.struts2.RegAction" scope="prototype">
<property name="userService" ref=""/>
</bean
Struts2(struts.xml)
<package name="ssm" extends="struts-default">
url reg.action ---> 会接受到用户的请求后,创建RegAction这个类的对象 进行相应的处理
<action name="reg" class="regAction">
<result name="success">/index.jsp</result>
</action>
</package>
SSM = Spring+Struts2 Spring+Mybatis

搭建开发环境
引入相关jar (Spring Struts2 Mybatis)
<dependency>
<groupId>org.apache.struts</groupId>
<artifactId>struts2-spring-plugin</artifactId>
<version>2.3.8</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet.jsp/javax.servlet.jsp-api -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.18</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.48</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>5.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>5.1.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.8.8</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.3</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.25</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
引入对应的配置文件
初始化配置
Spring (ContextLoaderListener —> Web.xml)
Struts2(Filter —> Web.xml)
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
编码
DAO (Spring+Mybatis)
1. 配置文件的配置
1. DataSource
2. SqlSessionFactory ----> SqlSessionFactoryBean
1. dataSource
2. typeAliasesPackage
3. mapperLocations
3. MapperScannerConfigur ---> DAO接口实现类
2. 编码
1. entity
2. table
3. DAO接口
4. 实现Mapper文件
Service (Spring添加事务)
1. 原始对象 ---》 注入DAO
2. 额外功能 ---》 DataSourceTransactionManager ---> dataSource
3. 切入点 + 事务属性
@Transactional(propagation,readOnly...)
4. 组装切面
<tx:annotation-driven
Controller (Spring+Struts2)
1. 开发控制器 implements Action 注入Service
2. Spring的配置文件
1. 注入 Service
2. scope = prototype
3. struts.xml
<action class="spring配置文件中action对应的id值"/>
Spring会根据需要,把配置信息分门别类的放置在多个配置文件中,便于后续的管理及维护。
DAO ------ applicationContext-dao.xml
Service --- applicationContext-service.xml
Action --- applicationContext-action.xml
注意:虽然提供了多个配置文件,但是后续应用的过程中,还要进行整合
通配符方式
1. 非web环境
ApplicationContext ctx = new ClassPathXmlApplicationContext("/applicationContext-*.xml");
2. web环境
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext-*.xml</param-value>
<context-param>
<import标签
applicationContext.xml 目的 整合其他配置内容
<import resource="applicationContext-dao.xml " />
<import resource="applicationContext-service.xml " />
<import resource="applicationContext-action.xml " />
1. 非web环境
ApplicationContext ctx = new ClassPathXmlApplicationContext("/applicationContext.xml");
2. web环境
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
<context-param>
原文:https://www.cnblogs.com/jiaowoxiaofeng/p/14372539.html