spring mvc注解基本配置

<?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>AnnoationSpringMVC</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
 
<!-- 配置spring mvc 的核心servlet -->
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<!-- 指定spring mvc 配置文件的路径 默认为 /WEB-INF/<[servlet-name]-servlet.xml> 例如此处为/WEB-INF/spring-servlet.xml 
              下面配置的也就是默认值 -->
<param-value>/WEB-INF/spring-servlet.xml</param-value>
</init-param>
<!-- 配置随服务器启动自动初始化 -->
<load-on-startup>1</load-on-startup>
 
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>

<?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:p="http://www.springframework.org/schema/p"
xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
                http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd  
                http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd  
                http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd">
 
<!-- 指定注解扫描包 扫描使用了注解的类 Spring在启动的时候，会默认扫描自动扫描包下的所有的类，
    为每个注解分配一个mapping。 -->
<context:component-scan base-package="com.morris.controller"></context:component-scan>
<!-- AnnotationMethodHandlerAdapter 是方法映射的，不同方法有不同url请求，在类找方法。 
    2）DefaultAnnotationHandlerMapping 
       DefaultAnnotationHandlerMapping根据扫描的包下面找类，即通过url找类 -->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"></bean>
<bean
class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping"></bean>
 
 
<!-- 视图解析器 当返回逻辑视图时，InternalResourceViewResolver会加上前缀和后缀 -->
<bean id="internalResourceViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
 
<property name="suffix" value=".jsp"></property>
<property name="prefix" value="/"></property>
</bean>
</beans>

package com.morris.controller;
 
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class HelloController {
         
         @RequestMapping(value="/hello")
         public ModelAndView handleRequest(HttpServletRequest request,
                            HttpServletResponse response) throws Exception {
                   
                   System.out.println("hello....");
                   
                   return new ModelAndView("hello");
         }
 
}