第二讲 springmvc 注解配置

<!-- web.xml 配置 -->
<!-- ====================================== -->
<servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <!-- 可以自定义servlet.xml配置文件的位置和名称，默认为WEB-INF目录下，名称为[<servlet-name>]-servlet.xml，如spring-servlet.xml
    <init-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring-servlet.xml</param-value>  默认
    </init-param>
    -->
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<!-- servlet.xml 配置 -->

<?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:mvc="http://www.springframework.org/schema/mvc"

       xmlns:p="http://www.springframework.org/schema/p"

       xmlns:context="http://www.springframework.org/schema/context"

       xmlns:aop="http://www.springframework.org/schema/aop"

       xmlns:tx="http://www.springframework.org/schema/tx"

       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/aop 

            http://www.springframework.org/schema/aop/spring-aop-3.0.xsd

            http://www.springframework.org/schema/tx 

            http://www.springframework.org/schema/tx/spring-tx-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/context 

            http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <!-- 默认扫描的包路径 -->  

    <context:component-scan base-package="cn.xy.hello" />  

    <!-- 添加注解驱动 -->  

    <mvc:annotation-driven />  

    <!-- 定义跳转的文件的前后缀 -->  

    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">  

        <property name="prefix" value="/WEB-INF/jsp/" />  

        <property name="suffix" value=".jsp" />  

    </bean>  

</beans>

//Java代码
package cn.xy.hello;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class IndexController {
    @RequestMapping("/index")
    public String index() {
    	System.out.println("hello");
    	return "index.jsp";
    }
    @RequestMapping("/hello1")
    public String hello() {
    	System.out.println("hello1");
//        return "forward:index.jsp"; //转发
//　　　　 return "redirect:index.jsp" //重定向

    }
}