SpringMVC_01 SpringMVC五大组件、SpringMVC编程步骤(不使用注解进行配置)、SpringMVC编程步骤(利用注解进行配置)、参数获取、响应数据

 

1 什么是SpringMVC

  是一个mvc框架,用来简化基于mvc架构的web应用程序的 开发。

 

2 SpringMVC五大组件

  DispatcherServlet (前端控制器)

  HanlderMapping

  Controller (处理器)

  ModelAndView

  ViewResolver (视图解析器)

  2.1 springMVC 的五大组件怎么协同工作

    》DispatcherServlet收到请求之后,依据 HandlerMapping的配置调用相应的处理器来处理。

    》处理器将处理结果封装成ModelAndView, 然后返回给DispatcherServlet。

    》DispatcherServlet依据ViewResovler的 解析,调用相应的视图对象(比如某个jsp)来生成 相应的页面。

 

3 SpringMVC编程步骤

  3.1 导包 : spring-webmvc

    》需要配置运行环境为 Tomcat

  3.2 添加一个spring的配置文件

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
 4     xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee"
 5     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
 6     xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:util="http://www.springframework.org/schema/util"
 7     xmlns:jpa="http://www.springframework.org/schema/data/jpa"
 8     xsi:schemaLocation="
 9         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
10         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
11         http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
12         http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
13         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
14         http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
15         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
16         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
17         http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd">
18     
19     <!-- 配置HandlerMapping -->
20     <bean class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
21         <property name="mappings">
22             <props>
23                 <prop key="/hello.do">helloController</prop>
24             </props>
25         </property>
26     </bean>
27     <bean id="helloController" class="test.TestController"/>
28     
29     <!-- 配置ViewResolver -->
30     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
31     <property name="prefix" value="/WEB-INF/"/> 
32     <property name="suffix" value=".jsp"/> 
33     </bean> 
34     
35 </beans>
spring配置文件模板

  3.3 配置DispatcherServlet

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <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" version="2.5">
 3   <display-name>springmvc01s</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>
10     <welcome-file>default.jsp</welcome-file>
11   </welcome-file-list>
12   
13   <servlet>
14       <servlet-name>springmvc</servlet-name>
15       <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
16       <!-- 
17           DispatcherServlet的初始化方法会启动spring容器,
18           contextConfigLocation用于指定spring配置文件的位置
19        -->
20       <init-param>
21           <param-name>contextConfigLocation</param-name>
22           <param-value>classpath:spring-mvc.xml</param-value>
23       </init-param>
24       <load-on-startup>1</load-on-startup>
25   </servlet>
26   <servlet-mapping>
27       <servlet-name>springmvc</servlet-name>
28       <url-pattern>*.do</url-pattern>
29   </servlet-mapping>
30 </web-app>
DispatcherServlet配置文件

  3.4 写Controller(处理器)

  3.5 写jsp

  3.6 配置HandlerMapping,ViewResolver

 

4 SpringMVC编程步骤(利用注解实现) 

  step1. 导包。
  step2. 添加一个spring的配置文件。

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
 4     xmlns:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee"
 5     xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
 6     xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:util="http://www.springframework.org/schema/util"
 7     xmlns:jpa="http://www.springframework.org/schema/data/jpa"
 8     xsi:schemaLocation="
 9         http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
10         http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd
11         http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.2.xsd
12         http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.2.xsd
13         http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
14         http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
15         http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
16         http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
17         http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.2.xsd">
18     <!-- 配置注解扫描 -->
19     <context:component-scan base-package="test"></context:component-scan>
20     <!-- 配置mvc注解扫描 -->
21     <mvc:annotation-driven></mvc:annotation-driven>
22     
23     <!-- 配置ViewResolver -->
24     <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
25     <property name="prefix" value="/WEB-INF/"/> 
26     <property name="suffix" value=".jsp"/> 
27     </bean> 
28     
29 </beans>
spring配置文件模板(利用注解实现)

  step3. 配置DispatcherServlet。
  step4. 写Controller(处理器)。
    要求:
      a. 不用实现Controller接口。
      b. 可以添加多个方法。
      c. 方法名不做要求,返回值可以是ModelAndView, 也可以是String。
      d. 将@Controller添加到类名前。
      e. 将@RequestMapping添加到类名前或者方法前。
  step5.写jsp。
  step6.配置ViewResolver,组件扫描,mvc注解扫描。
  注:只有配置了mvc注解扫描,@RequestMapping才起 作用

 

5 参数获取、响应数据

  待更新...2017年5月13日22:41:15

 

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posted @ 2017-05-13 20:09  寻渝记  阅读(11594)  评论(0编辑  收藏  举报