• (续)SSM整合之SSM整合笔记(ContextLoaderListener)（P177-178）

    目录

    ContextLoaderListener

    一  ContextLoaderListener

    二   测试ContextLoaderListener

    1 新建模块spring_listener     com.atguigu

    2. 导入依赖

    3 .转web

    4 .web.xml

    5 springmvc.xml

    6 .spring.xml

    7  首页index.html

    8 控制层 HelloController

    9  service接口HelloService 

    10 service实现类

    11   配置到tomcat中并启动

    12 测试结果

    ContextLoaderListener

    一  ContextLoaderListener

    Spring 提供了监听器 ContextLoaderListener ，实现 ServletContextListener 接口，可监听
    ServletContext 的状态，在 web 服务器的启动，读取 Spring 的配置文件，创建 Spring 的 IOC 容器。 web应用中必须在 web.xml 中配置

     

    1.     <listener>
    2.         
    3.         <listenerclass>org.springframework.web.context.ContextLoaderListenerlistener-class>
    4. listener>
    5.         
    6. <context-param>
    7. <param-name>contextConfigLocationparam-name>
    8. <param-value>classpath:spring.xmlparam-value>
    9. context-param>

    二   测试ContextLoaderListener

    1 新建模块spring_listener     com.atguigu

    2. 导入依赖

    war


    
    
        org.springframework
        spring-webmvc
        5.3.1
    

    
    
        ch.qos.logback
        logback-classic
        1.2.3
    

    
    
        javax.servlet
        javax.servlet-api
        3.1.0
        provided
    

    
    
        org.thymeleaf
        thymeleaf-spring5
        3.0.12.RELEASE

    3 .转web

    4 .web.xml

    1. <servlet>
    2.         <servlet-name>SpringMVCservlet-name>
    3.         <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
    4.         <init-param>
    5.             <param-name>contextConfigLocationparam-name>
    6.             <param-value>classpath:springmvc.xmlparam-value>
    7.         init-param>
    8.         <load-on-startup>1load-on-startup>
    9.     servlet>
    10.     <servlet-mapping>
    11.         <servlet-name>SpringMVCservlet-name>
    12.         <url-pattern>/url-pattern>
    13.     servlet-mapping>
    14.  
    15.     <listener>
    16.         
    17.         <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
    18.     listener>
    19.  
    20.     <context-param>
    21.         <param-name>contextConfigLocationparam-name>
    22.         <param-value>classpath:spring.xmlparam-value>
    23.     context-param>

    5 springmvc.xml

    1. "1.0" encoding="UTF-8"?>
    2. <beans xmlns="http://www.springframework.org/schema/beans"
    3.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    4.        xmlns:context="http://www.springframework.org/schema/context"
    5.        xmlns:mvc="http://www.springframework.org/schema/mvc"
    6.        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    7.  
    8.     
    9.     <context:component-scan base-package="com.atguigu.controller">context:component-scan>
    10.  
    11.     
    12.     <bean id="viewResolver" class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
    13.         <property name="order" value="1"/>
    14.         <property name="characterEncoding" value="UTF-8"/>
    15.         <property name="templateEngine">
    16.             <bean class="org.thymeleaf.spring5.SpringTemplateEngine">
    17.                 <property name="templateResolver">
    18.                     <bean class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">
    19.                         
    20.                         <property name="prefix" value="/WEB-INF/templates/"/>
    21.                         
    22.                         <property name="suffix" value=".html"/>
    23.                         <property name="templateMode" value="HTML5"/>
    24.                         <property name="characterEncoding" value="UTF-8" />
    25.                     bean>
    26.                 property>
    27.             bean>
    28.         property>
    29.     bean>
    30.  
    31.     <mvc:annotation-driven />
    32.  
    33.     <mvc:view-controller path="/" view-name="index">mvc:view-controller>
    34.  
    35. beans>

    6 .spring.xml

    1. "1.0" encoding="UTF-8"?>
    2. <beans xmlns="http://www.springframework.org/schema/beans"
    3.        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    4.        xmlns:context="http://www.springframework.org/schema/context"
    5.        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd">
    6.  
    7.     
    8.     <context:component-scan base-package="com.atguigu.service.impl">context:component-scan>
    9.  
    10. beans>

    7  首页index.html

    1. html>
    2. <html lang="en" xmlns:th="http://www.thymeleaf.org">
    3. <head>
    4.     <meta charset="UTF-8">
    5.     <title>首页title>
    6. head>
    7. <body>
    8. <h1>index.htmlh1>
    9. body>
    10. html>

    8 控制层 HelloController

    1. package com.atguigu.controller;
    2.  
    3. @Controller
    4. public class HelloController {
    5.  
    6.     @Autowired
    7.     private HelloService helloService;
    8.  
    9. }

    9  service接口HelloService 

    1. package com.atguigu.service;
    2.  
    3. public interface HelloService {
    4. }

    10 service实现类

    1. package com.atguigu.service.impl;
    2.  
    3. @Service
    4. public class HelloServiceImpl implements HelloService {
    5. }

    11   配置到tomcat中并启动

    12 测试结果

     

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  • 原文地址：https://blog.csdn.net/m0_59281987/article/details/127992968