复习第二点-2.基于注解的helloworld
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<!--配置前端控制器-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
springmvc.xml
<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd"
xmlns:mvc="http://www.springframework.org/schema/mvc"
>
<!--
这个标签仅是@Controller @RequestMapping 基本功能的注解可以使用
-->
<context:component-scan base-package="controller"/>
<!--
增加了这个标签后,提供了扩展功能
它的处理类 AnnotationDrivenBeanDefinitionParser 会注册很多基于注解开发时所用到的
Bean 对 象 到 容 器 中 。 其 中 包 含 RequestMappingHandlerMapping 、
RequestMappingHandlerAdapter 与 ExceptionHandlerExceptionResolver 三个 bean。
-->
<mvc:annotation-driven/>
</beans>
AnnoController.java
package controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
@Controller
//http://localhost:8888/springmvc_war_exploded/suibian/ann
// @RequestMapping 用于将一个 URI 绑定到类上或类的方法中。
@RequestMapping("/suibian")
public class AnnoController {
//http://localhost:8888/springmvc_war_exploded/ann
@RequestMapping("/ann")
public ModelAndView annDemo(){
ModelAndView modelAndView = new ModelAndView();
modelAndView.setViewName("/index.jsp");
modelAndView.addObject("msg","Hello Oldlu");
return modelAndView;
}
}
展示效果
本文来自博客园,作者:jsqup,转载请注明原文链接:https://www.cnblogs.com/jsqup/p/17049633.html