Still Silicon Valley SPRINGMVC code note springmvc_3

SPRINGMVC Running Flowchart:

Project structure:

Home index.jsp Code:

<%@ 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" >

Service
Package Com.atguigu.springmvc;import Org.springframework.beans.factory.annotation.autowired;import Org.springframework.stereotype.Service; @Servicepublic class UserService {//cannot inject controller layer//@Autowired//private HelloWorld helloworld;public UserService () {System.out.println ("UserService Constructor ...");}

Handler Control layer:
Package Com.atguigu.springmvc;import Org.springframework.beans.factory.annotation.autowired;import Org.springframework.stereotype.controller;import org.springframework.web.bind.annotation.requestmapping;@ Controllerpublic class HelloWorld {@Autowiredprivate userservice userservice;public HelloWorld () {System.out.println ( "HelloWorld Constructor ..."); @RequestMapping ("/helloworld") public String Hello () {System.out.println ("success"); System.out.println (UserService); return "Success";}}

Spring configuration file Bean.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.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/ Spring-context-4.0.xsd "><context:component-scan base-package=" Com.atguigu.springmvc "><context: Exclude-filter type= "Annotation" expression= "Org.springframework.stereotype.Controller"/><context: Exclude-filter type= "Annotation" expression= "Org.springframework.web.bind.annotation.ControllerAdvice"/></ context:component-scan><!--Configure data sources, integrate other frameworks, transactions, and more. --></beans>

SPRINGMVC configuration file Springmvc.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" Xmlns:mvc= "Http://www.springframework.org/schema/mvc" xsi:schemalocation= "Http://www.springframework.org/schema /mvc Http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsdhttp://www.springframework.org/schema/beans Http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/context http ://www.springframework.org/schema/context/spring-context-4.0.xsd "><!--do I need to do spring integration SPRINGMVC? Do you need to join again? Spring's IOC container? Do I need to configure the Contextloaderlistener. 1 in the Web. xml file to start the Spring IOC container? Required: Typically, similar to data sources, transactions, and other frameworks for consolidation are placed in the spring configuration file (not in the SPRINGMVC configuration file). In fact, there are Service and Dao in the IOC container corresponding to the spring configuration file. 2. Not required: Both are placed in the SPRINGMVC configuration file. It is also possible to divide multiple spring profiles and then import other configuration files using an Import node--><!--problem: If Spring's IOC container and SPRINGMVC's IOC container scan packages have coincidentsection, it will cause some beans to be created 2 times. Resolution: 1. The package scanned by the Spring IOC container and the SPRINGMVC of the IOC container do not have a coincident portion. 2. Use Exclude-filter and Include-filter subnodes to specify annotations that can only be scanned--><!--the beans in the Springmvc IOC container can refer to the beans in the Spring IOC container. Return to it? Conversely, it is not. Beans in the Spring IOC container cannot refer to beans in the Springmvc IOC container!--><context:component-scan base-package= " Com.atguigu.springmvc "use-default-filters=" false "><context:include-filter type=" annotation "expression=" Org.springframework.stereotype.Controller "/><context:include-filter type=" annotation "expression=" Org.springframework.web.bind.annotation.ControllerAdvice "/></context:component-scan><!--Configuration View Resolver-- ><bean class= "Org.springframework.web.servlet.view.InternalResourceViewResolver" ><property name= " Prefix "value="/web-inf/views/"></property><property name=" suffix "value=". JSP ></property> </bean><mvc:default-servlet-handler/><mvc:annotation-driven></mvc:annotation-driven> </beans>

Xml:
<?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_3_0.xsd "id=" webapp_id "version=" 3.0 "> <display-name>springmvc_3</ Display-name> <!--configuration start the Spring IOC container Listener--><!--needed for Contextloaderlistener--><context-pa ram><param-name>contextconfiglocation</param-name><param-value>classpath:beans.xml</ param-value></context-param><!--bootstraps The root Web application context before servlet initialization- -><listener><listener-class>org.springframework.web.context.contextloaderlistener</ Listener-class></listener><servlet><servlet-name>springdispatcherservlet</servlet-name ><servlet-class>org.springframework.web.servlet.dispatcherservlet</servlet-class><init-param ><param-name>contextconfiglocation</param-name><param-value>classpath:springmvc.xml</ param-value></init-param><load-on-startup>1</load-on-startup></servlet>< servlet-mapping><servlet-name>springdispatcherservlet</servlet-name><url-pattern>/</ Url-pattern></servlet-mapping></web-app>


Still Silicon Valley SPRINGMVC code note springmvc_3