Spring MVC five core components and configurations

One, five core components

1.DispatcherServlet Request Entry

2.HandlerMapping request dispatch, responsible for the request and the controller to establish one by one corresponding relationship

3.Controller processor

4.ModelAndView Package model information and view information

5.ViewResolver view processor, positioning page

Two, Spring MVC writing step (access to the. JSP under Web-inf)

1. Build the project, import the jar package (IOC MVC) and copy the corresponding configuration file from the spring container to SRC, and create a hello.jsp under Web-inf

2. Configure the Dispatcherservlet in Web. XML and specify the corresponding configuration file for the spring container by initializing the parameters Contextconfiglocation

3. Configure the Handlermapping implementation class in the spring configuration file simpleurlhandlermapping

4. Write a controller class to implement the Controller interface, return Modelandview in the controllers method, configure the controller in the spring container

5. Configuring the Viewresolver implementation class Internalresourceviewresolver

:

Configure Dispatcherservlet

1<?xml version= "1.0" encoding= "UTF-8"?>2<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 ">3<display-name>spring-mvc</display-name>4<welcome-file-list>5<welcome-file>index.html</welcome-file>6<welcome-file>index.htm</welcome-file>7<welcome-file>index.jsp</welcome-file>8<welcome-file>default.html</welcome-file>9<welcome-file>default.htm</welcome-file>Ten<welcome-file>default.jsp</welcome-file> One</welcome-file-list> A<!--configuration Request Entry-- -<servlet> -<servlet-name>SpringMVC</servlet-name> the<servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class> -<!--configuration initialization Parameters-- -<init-param> -<param-name>contextConfigLocation</param-name> +<param-value>classpath:applicationContext.xml</param-value> -</init-param> +</servlet> A<servlet-mapping> at<servlet-name>SpringMVC</servlet-name> -<url-pattern>*. Do</url-pattern> -</servlet-mapping> -</web-app>

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Configuration Handlermapping

1<?xml version= "1.0" encoding= "UTF-8"?>2<beans xmlns= "Http://www.springframework.org/schema/beans"3Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"4xmlns:context= "Http://www.springframework.org/schema/context"5Xmlns:jdbc= "Http://www.springframework.org/schema/jdbc"6Xmlns:jee= "Http://www.springframework.org/schema/jee"7xmlns:tx= "Http://www.springframework.org/schema/tx"8xmlns:aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"9Xmlns:mvc= "Http://www.springframework.org/schema/mvc"TenXmlns:util= "Http://www.springframework.org/schema/util" OneXmlns:jpa= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/DATA/JPA" Axsi:schemalocation=" -http//Www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.1.xsd -http//Www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.1.xsd thehttp//Www.springframework.org/schema/jdbchttp://www.springframework.org/schema/jdbc/spring-jdbc-4.1.xsd -http//Www.springframework.org/schema/jeehttp://www.springframework.org/schema/jee/spring-jee-4.1.xsd -http//Www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-4.1.xsd -http//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/DATA/JPAhttp://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd +http//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOPhttp://www.springframework.org/schema/aop/spring-aop-4.1.xsd -http//Www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd +http//Www.springframework.org/schema/utilhttp://www.springframework.org/schema/util/spring-util-4.1.xsd"> A<!--Configure the request dispatcher to establish a one by one correspondence between the request and the controller- at<bean id= "Handlermapping"class= "Org.springframework.web.servlet.handler.SimpleUrlHandlerMapping" > -<property name= "Mappings" > -<props> -<prop key= "/tohello.do" >helloController</prop> -</props> -</property> in</bean> -<!--Configuring the controller-- to<bean id= "Hellocontroller"class= "Com.xcz.controller.ToHelloController" ></bean> +</beans>

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Configuration Viewresolver

1<?xml version= "1.0" encoding= "UTF-8"?>2<beans xmlns= "Http://www.springframework.org/schema/beans"3Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"4xmlns:context= "Http://www.springframework.org/schema/context"5Xmlns:jdbc= "Http://www.springframework.org/schema/jdbc"6Xmlns:jee= "Http://www.springframework.org/schema/jee"7xmlns:tx= "Http://www.springframework.org/schema/tx"8xmlns:aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"9Xmlns:mvc= "Http://www.springframework.org/schema/mvc"TenXmlns:util= "Http://www.springframework.org/schema/util" OneXmlns:jpa= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/DATA/JPA" Axsi:schemalocation=" -http//Www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.1.xsd -http//Www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.1.xsd thehttp//Www.springframework.org/schema/jdbchttp://www.springframework.org/schema/jdbc/spring-jdbc-4.1.xsd -http//Www.springframework.org/schema/jeehttp://www.springframework.org/schema/jee/spring-jee-4.1.xsd -http//Www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-4.1.xsd -http//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/DATA/JPAhttp://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd +http//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOPhttp://www.springframework.org/schema/aop/spring-aop-4.1.xsd -http//Www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd +http//Www.springframework.org/schema/utilhttp://www.springframework.org/schema/util/spring-util-4.1.xsd"> A<!--configuration View processor-- at<beanclass= "Org.springframework.web.servlet.view.InternalResourceViewResolver" > -<property name= "prefix" value= "/web-inf/" ></property> -<property name= "suffix" value= ". JSP" ></property> -</bean> -</beans>

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Final configuration Results

1<?xml version= "1.0" encoding= "UTF-8"?>2<beans xmlns= "Http://www.springframework.org/schema/beans"3Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"4xmlns:context= "Http://www.springframework.org/schema/context"5Xmlns:jdbc= "Http://www.springframework.org/schema/jdbc"6Xmlns:jee= "Http://www.springframework.org/schema/jee"7xmlns:tx= "Http://www.springframework.org/schema/tx"8xmlns:aop= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOP"9Xmlns:mvc= "Http://www.springframework.org/schema/mvc"TenXmlns:util= "Http://www.springframework.org/schema/util" OneXmlns:jpa= "HTTP://WWW.SPRINGFRAMEWORK.ORG/SCHEMA/DATA/JPA" Axsi:schemalocation=" -http//Www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans-4.1.xsd -http//Www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.1.xsd thehttp//Www.springframework.org/schema/jdbchttp://www.springframework.org/schema/jdbc/spring-jdbc-4.1.xsd -http//Www.springframework.org/schema/jeehttp://www.springframework.org/schema/jee/spring-jee-4.1.xsd -http//Www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-4.1.xsd -http//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/DATA/JPAhttp://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd +http//WWW.SPRINGFRAMEWORK.ORG/SCHEMA/AOPhttp://www.springframework.org/schema/aop/spring-aop-4.1.xsd -http//Www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd +http//Www.springframework.org/schema/utilhttp://www.springframework.org/schema/util/spring-util-4.1.xsd"> A<!--Configure the request dispatcher to establish a one by one correspondence between the request and the controller- at<bean id= "Handlermapping"class= "Org.springframework.web.servlet.handler.SimpleUrlHandlerMapping" > -<property name= "Mappings" > -<props> -<prop key= "/tohello.do" >helloController</prop> -</props> -</property> in</bean> -<!--Configuring the controller-- to<bean id= "Hellocontroller"class= "Com.xcz.controller.ToHelloController" ></bean> +<!--configuration View processor-- -<beanclass= "Org.springframework.web.servlet.view.InternalResourceViewResolver" > the<property name= "prefix" value= "/web-inf/" ></property> *<property name= "suffix" value= ". JSP" ></property> $</bean>Panax Notoginseng</beans>

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Finally open the service, enter localhost on the browser: Port number/project name/tohello.do, see the following interface, indicating that the configuration is successful

Spring MVC five core components and configurations