springMVC-HelloWorld

1.加入包

2.web.xml

3.利用spring-tool来新建一个springmvc的配置文件

关键步骤,选择创建一个Spring Bean Definition filer 然后next,然后勾选beans,context,mvc,三个

然后finish

目录结构

 

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package com.atguigu.springmvc.handlers;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class HelloWorld
{
    /**
     * 1. 使用@requestMapping 注解来映射请求的URL
     * 2. 返回值会通过视图解析器来解析为实际的物理视图,对于InternalResourceViewResolver视图解析器
     * 会做如下的解析 prefix+returnVal+suffix得到实际的物理视图,然后会做转发
     * @return
     */
    @RequestMapping(value="/helloWorld")
    public String hello()
    {
        System.out.println("hello world");
        return "success";
    }
}
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<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
    id="WebApp_ID" version="3.1">
<!--配置DipatcherServlet  -->    
<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
    <servlet>
        <servlet-name>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!--配置dispatcherServlet的一个初始化参数:配置SpringMVC配置文件位置和名称  -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <!--在web应用启动时加载  -->
        <load-on-startup>1</load-on-startup>
    </servlet>

    <!-- Map all requests to the DispatcherServlet for handling -->
    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <!--/可以应对所有请求  -->
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
        
</web-app>
 
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上面的是web.xml的文件,

spring的配置文件

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<?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"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    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-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">

    <!--配置自动配置的包 -->
    <context:component-scan base-package="com.atguigu.springmvc.handlers"></context:component-scan>
    <!--视图解析器:如何把hanlder方法返回值解析为实际的物理视图 -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>

</beans>







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index.jsp

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<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<a href="helloWorld">hello</a>
</body>
</html>
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success.jsp

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<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
success
</body>
</html>
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注意,这个仅仅是一个helloworld,不是完成的,也不能在再次基础上做深入开发,如果深入的开发还需要后面的知识

posted @   牵牛花  阅读(175)  评论(0编辑  收藏  举报
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