ssm框架学习03--springmvc和mybatis整合
2016-05-14 19:18
721 查看
1.前端控制器(DispatcherServlet)
2.处理器映射器(handlermapping)
3.处理器适配器(handlerAdaper)
4.视图解析器(ViewerResolver)
需要使用spring的jar包,springmvc的jar包
目录结构如下
首先配置前端控制器:在web.xml中
配置如下:
接下来配置springmvc,中间包括处理器映射器等和待会要编写的handler的bean,也就是目录中controller包下的类
如下图所示
如下:
如下:
到这里整个整合过程就完成了,下面具体去调试,消除里面的错误,
看到成功结果如下:
从上面编写的controller代码中,我自己手动添加了二条数据,最后一条上图中红色部分为从数据库中读出来的,由此看出整个过程配置成功
2.处理器映射器(handlermapping)
3.处理器适配器(handlerAdaper)
4.视图解析器(ViewerResolver)
需要使用spring的jar包,springmvc的jar包
目录结构如下
首先配置前端控制器:在web.xml中
配置如下:
<!-- springmvc前端控制器 ,里面配置处理器映射器和处理器适配器--> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*.action</url-pattern> </servlet-mapping>里面指定了和它打交道的处理器映射器,处理器适配器和视图解析器的配置文件在springmvc.xml中,同时设置了url的格式
接下来配置springmvc,中间包括处理器映射器等和待会要编写的handler的bean,也就是目录中controller包下的类
如下图所示
<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" 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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> <!-- 配置controller的bean,这里使用组件扫描 --> <context:component-scan base-package="com.zcj.ssm.controller"></context:component-scan> <!-- 配置处理器映射器和处理器适配器 --> <mvc:annotation-driven></mvc:annotation-driven> <!-- 配置视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- 配置前缀和后缀 --> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>从配置文件中可以看出已经将整个controller 配置到里面去了,并且这里使用了注解的处理器和映射器,因此controller类的编写时基于注解的
如下:
package com.zcj.ssm.controller; import java.util.ArrayList; import java.util.List; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.zcj.ssm.po.User; import com.zcj.ssm.service.UserService; @Controller public class UserController { @Autowired UserService userService; @RequestMapping("/userslist") public ModelAndView findUserById(){ User user3= userService.findUserById(1); List<User> list = new ArrayList<User>(); User user1= new User(); user1.setUsername("zcj"); User user2 = new User(); user2.setUsername("test"); list.add(user1); list.add(user2); list.add(user3); ModelAndView modelAndView = new ModelAndView(); modelAndView.addObject("userslist",list); modelAndView.setViewName("userinfo/usersList"); return modelAndView; } }上面的配置文件中使用了扫描方式,因此这里@Controller注解用于指定该类是一个handler,路由的配置使用@RequestMapping,从该类中可以看出使用到了service层
如下:
package com.zcj.ssm.service; import org.springframework.stereotype.Service; import com.zcj.ssm.po.User; public interface UserService { public User findUserById(int id); }实现类:
package com.zcj.ssm.serviceimpl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.zcj.ssm.mapper.UserMapper; import com.zcj.ssm.po.User; import com.zcj.ssm.service.UserService; @Service public class UserServiceImpl implements UserService { @Autowired UserMapper userMapper; public User findUserById(int id) { // TODO Auto-generated method stub User user = userMapper.selectByPrimaryKey(id); return user; } }同样这里的service类也需要放到spring容器中,使用配置文件applicationContext-service.xml如下
<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" 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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> <!-- 可以扫描controller、service、... --> <context:component-scan base-package="com.zcj.ssm.serviceimpl"></context:component-scan> </beans>同样的使用了扫描器,因此类的编写使用到了@Service注解,从实现类中可以看到使用了持久层中的mapper,再向下走和前一篇文章就一致了,这里不再写了,为了增加事务管理,为事务管理配置applicationContext-transaction.xml如下
<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" 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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd "> <!-- 配置事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <!--数据源已经在applicationContext-dao中进行了配置 --> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 配置通知 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <tx:attributes> <!-- 传播行为 --> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="insert*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="find*" propagation="SUPPORTS" read-only="true"/> <tx:method name="get*" propagation="SUPPORTS" read-only="true"/> <tx:method name="select*" propagation="SUPPORTS" read-only="true"/> </tx:attributes> </tx:advice> <!-- aop --> <aop:config> <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.zcj.ssm.serviceimpl.*.*(..))"/> </aop:config> </beans>最后我们需要将页面和spring整合起来,再web.xml中将中间的配置文件放入spring容器中如下:
<!-- 加载spring容器 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/classes/spring/applicationContext-*.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener>
到这里整个整合过程就完成了,下面具体去调试,消除里面的错误,
看到成功结果如下:
从上面编写的controller代码中,我自己手动添加了二条数据,最后一条上图中红色部分为从数据库中读出来的,由此看出整个过程配置成功
相关文章推荐
- n!的实现(java)
- Java反射详解,从理论到实践
- java基础学习总结六(对象与类、类的属性与方法)
- java反射机制
- Java 反射机制(一)
- <Spring>Spring MVC之@RequestBody, @ResponseBody 详解
- 二叉树的几种遍历递归与非递归java实现
- ssm框架学习02--mybatis和spring的整合
- 【JDK】:java.lang.Integer源码解析
- java 余数
- hdoj2021 (java) 发工资咯:)(二维数组&&绝对值)
- Spring与Struts框架整合
- hdoj2021 (java) 发工资咯:)(二维数组&&绝对值)
- Java线程间的通信方式详解
- java线程
- Eclipse “cannot be resolved to a type” error
- spring事务到底用于service层还是dao层
- Complete Guide for Spring Boot Actuator
- SpringMVC HelloWorld
- java多线程编程之Synchronized关键字详解