Simple SpringMVC classic cases and springmvc classic cases

Simple SpringMVC classic cases and springmvc classic cases

Topic: Build a SpringMVC-based HelloWord Web Project

Purpose: Quick experience of SpringMVC

Solution:

1. Create a project named SpringMVC

<? Xml version = "1.0" encoding = "UTF-8"?> <Beans xmlns = "http://www.springframework.org/schema/beans" xmlns: mvc = "http://www.springframework.org/schema/mvc" xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" xmlns: context = "http://www.springframework.org/schema/context" xmlns: tx = "http://www.springframework.org/schema/tx" xmlns: aop = "http://www.springframework.org/schema/aop" xsi: schemaLocation = "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> </beans>

 

4. Configure the servlet -- DispatcherServlet front-end controller encapsulated in Spring in web. xml and specify the spring-mvc.xml File

<? Xml version = "1.0" encoding = "UTF-8"?> <Web-app xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" xmlns = "http://java.sun.com/xml/ns/javaee" xsi: schemaLocation = "http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id = "WebApp_ID" version = "2.5"> <display-name> SpringMVC </display-name> <servlet-name> SpringMVC </ servlet-name> <! -- DispathcherServlet front-end Controller --> <servlet-class> org. springframework. web. servlet. DispatcherServlet </servlet-class> <init-param> <! -- Variable name --> <param-name> contextConfigLocation </param-name> <! -- Specify the SpringMVC configuration file name --> <param-value> classpath: spring-mvc.xml </param-value> </init-param> <! -- Load-on-startup is equal to 1, the Servlet is instantiated when the container starts --> <load-on-startup> 1 </load-on-startup> </servlet> <servlet-mapping> <! -- Corresponds to the Servlet name above --> <servlet-name> SpringMVC </servlet-name> <! -- Used to match client requests --> <url-pattern> *. action </url-pattern> </servlet-mapping> </web-app>

 

5. Configure the HandlerMapping component in the spring-mvc.xml ---------------- role ------> set the client request and Controller

[InternalResourceViewResolver component] -- function ------> set view Configuration

[HelloController] ------------------------ function -------> test request processing

<? Xml version = "1.0" encoding = "UTF-8"?> <Beans xmlns = "http://www.springframework.org/schema/beans" xmlns: mvc = "http://www.springframework.org/schema/mvc" xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" xmlns: context = "http://www.springframework.org/schema/context" xmlns: tx = "http://www.springframework.org/schema/tx" xmlns: aop = "http://www.springframework.org/schema/aop" xsi: schemaLocation = "http://www.springframework.org/schema/beans ht Tp: // www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springfr Amework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd "> <! -- Define the client request ing --> <! -- HeanlerMapping is one of the core components of Spring --> <bean id = "headlerMapping" class = "org. springframework. web. servlet. handler. simpleUrlHandlerMapping "> <property name =" mappings "> <map> <entry key ="/hello. action "> <value> helloController </value> </entry> </map> </property> </bean> <! -- Add the HelloController Bean --> <bean id = "helloController" class = "controller. HelloController"/> <! -- Define the view interpreter (one of the core Spring components) --> <bean id = "viewResolver" class = "org. springframework. web. servlet. view. internalResourceViewResolver "> <property name =" prefix "value =" WEB-INF/jsp/"/> <property name =" suffix "value = ". jsp "/> </bean> </beans>

 

6. Compile HelloController. [Note: the Controller Interface must be implemented]

Package controller; import javax. servlet. http. httpServletRequest; import javax. servlet. http. httpServletResponse; import org. springframework. web. servlet. modelAndView; import org. springframework. web. servlet. mvc. controller; public class HelloController implements Controller {@ Override public ModelAndView handleRequest (HttpServletRequest arg0, HttpServletResponse arg1) throws Exception {ModelAndView mv = new ModelAndView ("hello"); System. out. println ("processing hello. action request "); return mv ;}}

7. Add the "jsp" folder under the WEB-INF folder and add hello. jsp

<% @ Page language = "java" contentType = "text/html; charset = UTF-8" pageEncoding = "UTF-8" %> <! DOCTYPE html PUBLIC "-// W3C // dtd html 4.01 Transitional // EN" "http://www.w3.org/TR/html4/loose.dtd"> 
8. Start running, boys ~ Then access http: // localhost/SpringMVC/hello. action. The effect is as follows: