Spring container vs SpringMVC container(webmvc container)
Difference between applicationContext.xml and spring-servlet.xml in Spring Framework
Scenario 1
In client application (application is not web application, e.g may be swing app)
private static ApplicationContext context = new ClassPathXmlApplicationContext("test-client.xml");
context.getBean(name);
No need of web.xml. ApplicationContext as container for getting bean service. No need for web server container. In test-client.xml there can be Simple bean with no remoting, bean with remoting.
Conclusion: In Scenario 1 applicationContext and DispatcherServlet are not related.
Scenario 2
In a server application (application deployed in server e.g Tomcat). Accessed service via remoting from client program (e.g swing app)
Define listener in web.xml
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
At server startup ContextLoaderListener instantiates beans defined in applicationcontext.xml.
Assuming you have defined the following in applicationcontext.xml:
<import resource="test1.xml" />
<import resource="test2.xml" />
<import resource="test3.xml" />
<import resource="test4.xml" />
The beans are instantiated from all four configuration files test1.xml, test2.xml, test3.xml, test4.xml.
Conclusion: In Scenario 2 applicationContext and DispatcherServlet are not related.
Scenario 3
In a web application with spring MVC.
In web.xml define:
<servlet>
<servlet-name>springweb</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>springweb</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
When tomcat starts, beans defined in springweb-servlet.xml are instantiated. DispatcherServlet extends FrameworkServlet. In FrameworkServlet bean instantiation takes place for springweb . In our case springweb is FrameworkServlet.
Conclusion: In Scenario 3 applicationContext and DispatcherServlet are not related.
Scenario 4
In web application with spring MVC. springweb-servlet.xml for servlet and applicationcontext.xml for accessing the business service within the server program or for accessing DB service in another server program.
In web.xml the following are defined:
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>springweb</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>springweb</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
At server startup, ContextLoaderListener instantiates beans defined in applicationcontext.xml; assuming you have declared herein:
<import resource="test1.xml" />
<import resource="test2.xml" />
<import resource="test3.xml" />
<import resource="test4.xml" />
The beans are all instantiated from all four test1.xml, test2.xml, test3.xml, test4.xml. After the completion of bean instantiation defined in applicationcontext.xml then beans defined in springweb-servlet.xml are instantiated.
So instantiation order is root is application context, then FrameworkServlet.
Now it makes clear why they are important in which scenario.
<ref:http://stackoverflow.com/a/15941066>
<context:component-scan base-package=“com.test" />
HandlerMapping,是SpringMVC中用来处理Request请求URL到具体Controller的,其自身也分成很多种类;
HandlerAdapter,是SpringMVC中用来处理具体请求映射到具体方法的,其自身也分很多种类;
@RequestMapping这个注解的主要目的就是对具体的Controller和方法进行注册,以方便HandlerMapping用来处理请求的映射。但是@RequestMapping需要结合<mvc:annotation-driven />使用才能生效。
protected void initHandlerMethods() {
if (logger.isDebugEnabled()) {
logger.debug("Looking for request mappings in application context: " + getApplicationContext());
}
String[] beanNames = (this.detectHandlerMethodsInAncestorContexts ?
BeanFactoryUtils.beanNamesForTypeIncludingAncestors(getApplicationContext(), Object.class) :
getApplicationContext().getBeanNamesForType(Object.class));
for (String beanName : beanNames) {
if (isHandler(getApplicationContext().getType(beanName))){
detectHandlerMethods(beanName);
}
}
handlerMethodsInitialized(getHandlerMethods());
}
protected boolean isHandler(Class<?> beanType) {
return AnnotationUtils.findAnnotation(beanType, Controller.class) != null;
}
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping">
<property name="detectHandlerMethodsInAncestorContexts">
<value>true</value>
</property>
</bean>
Spring容器配置,排除所有@controller的Bean
<context:component-scan base-package="com.fsnip.open">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
SpringMVC容器配置,让其只包括@controller的Bean
<context:component-scan base-package="com.fsnip.open" use-default-filters="false">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
Spring container vs SpringMVC container(webmvc container)的更多相关文章
- 【spring 国际化】springMVC、springboot国际化处理详解
在web开发中我们常常会遇到国际化语言处理问题,那么如何来做到国际化呢? 你能get的知识点? 使用springgmvc与thymeleaf进行国际化处理. 使用springgmvc与jsp进行国际化 ...
- spring整合mybatis,springMVC的0配置文件方式
0配置文件的形式主要是采用spring3.0提供的@configuration注解和spring容器在启动的时候会加载实现了WebApplicationInitializer的类,并调用其onStar ...
- Spring Data Jpa+SpringMVC+Jquery.pagination.js实现分页
本博客介绍基于Spring Data这款orm框架加上Jquery.pagination插件实现的分页功能. 介绍一下Spring Data框架 spring Data : Spring 的一个子项目 ...
- spring容器和springmvc容器,以及web容器的关系
说到spring和springmvc,其实有很多人分不清他们有什么区别,认为它俩是一样的,如果你问他项目里用的什么MVC技术,他会说我们用的spring和mybatis,或者spring和hibern ...
- 从源码层面聊聊面试问烂了的 Spring AOP与SpringMVC
Spring AOP ,SpringMVC ,这两个应该是国内面试必问题,网上有很多答案,其实背背就可以.但今天笔者带大家一起深入浅出源码,看看他的原理.以期让印象更加深刻,面试的时候游刃有余. Sp ...
- 简述Spring容器与SpringMVC的容器的联系与区别
简述Spring容器与SpringMVC的容器的联系与区别 2017年07月04日 10:55:07 阅读数:6260 摘要: 在Spring整体框架的核心概念中,容器的核心思想是管理Bean的整个生 ...
- Spring Boot实践——SpringMVC视图解析
一.注解说明 在spring-boot+spring mvc 的项目中,有些时候我们需要自己配置一些项目的设置,就会涉及到这三个,那么,他们之间有什么关系呢? 首先,@EnableWebMvc=Web ...
- Spring容器与SpringMVC容器的区别与联系
在spring整体框架的核心概念中,容器的核心思想是管理Bean的整个生命周期.但在一个项目中,Spring容器往往不止一个,最常见的场景就是在一个项目中引入Spring和SpringMVC这两个框架 ...
- 利用Intellij+MAVEN搭建Spring+Mybatis+MySql+SpringMVC项目详解
http://blog.csdn.net/noaman_wgs/article/details/53893948 利用Intellij+MAVEN搭建Spring+Mybatis+MySql+Spri ...
- servlet容器,web容器,spring容器,springmvc容器的区别(转)
web容器中有servlet容器,spring项目部署后存在spring容器和springmvc容器.其中spring控制service层和dao层的bean对象.springmvc容器控制contr ...
随机推荐
- iOS开发UI篇—Kvc简单介绍
ios开发UI篇—Kvc简单介绍 一.KVC简单介绍 KVC key valued coding 键值编码 KVC通过键值间接编码 补充: 与KVC相对的时KVO,即key valued observ ...
- Swift学习
Swift 中文教程(一)基础数据类型 基础类型 虽然Swift是一个为开发iOS和OS X app设计的全新编程语言,但是Swift的很多特性还是跟和Objective-C相似. Swift也提供了 ...
- OpenCV源码分析:RGB到其他色彩空间的转换
1.流程调用图 2.部分代码分析 //模板函数进行颜色空间的转换 template <typename Cvt> void CvtColorLoop(const Mat& src, ...
- 跨域资源共享 CORS
CORS是一个W3C标准,全称是"跨域资源共享"(Cross-origin resource sharing). 它允许浏览器向跨源服务器,发出XMLHttpRequest请求,从 ...
- Hadoop 2.2.0 4结点集群安装 非HA
总体介绍 虚拟机4台,分布在1个物理机上,配置基于hadoop的集群中包括4个节点: 1个 Master, 3个 Salve,i p分布为: 10.10.96.33 hadoop1 (Master) ...
- C#学习笔记----枚举、结构、方法及构造函数的总结
一.枚举 语法: [public] enum 枚举名 { 值1, 值2, 值3, ........ } public:访问修饰符.公开的公共的,哪都可以访问. enum:关键字,声明枚举的关键字 枚举 ...
- response下载文件 (转载)
核心代码: ? DataSet ds = dBll.GetList("ID=" + ID); ? string docName = "a.doc";//文件名, ...
- 打印datagridview内容 实现横向纵向分页(转)
网上找了很多打印的,只发现这个比较好,实现了横向纵向分页. 代码如下: using System;using System.Collections.Generic;using System.Text; ...
- Phaser开源2d引擎 html5游戏框架中文简介
功能特点(Features) 易维护代码(Easy Asset Loading) Phaser可以加载图片,音频文件,数据文件,文本文件和自动解析精灵图和纹理地图集数据(出口纹理封隔器或Flash C ...
- /proc/uptime详解
From:http://smilejay.com/2012/05/proc_uptime/ 在Linux中,我们常常会使用到uptime命令去看看系统的运行时间,它与一个文件有关,就是/proc/up ...