• springMVC3学习(一)--框架搭建


    由于项目需要,学习下springMVC,在此简单记录一下。

    如有十万个为什么,暂且忽略,待以后研究。

    本人是基于3.1.1版本开发,如遇jar包版本冲突等其他问题,概不负责。

    下载地址:上传此zip资源文件,不知道CSDN为什么不给显示,或许相同的资源太多了吧,

                      大家可自行去下载,或者进群,共享里有。

    一:新建web工程,spring001

    忽略

    二:添加springframework依赖jar包

    将dist下的jar全部加进去  然后另加一个commons-logging.jar

    三:修改web.xml

    <servlet>
    	<servlet-name>springMVC</servlet-name>
    	<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    	<init-param>
    		<param-name>contextConfigLocation</param-name>
    		<param-value>/WEB-INF/config/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>

    默认DispatcherServlet会加载WEB-INF/[DispatcherServlet的Servlet名字]-servlet.xml配置文件,

    本示例为WEB-INF/springMVC-servlet.xml


    默认路径为WEB-INF下,也可修改为如下配置

    <init-param>
    	<param-name>contextConfigLocation</param-name>
    	<!-- <param-value>classpath:conf/springMVC.xml</param-value>  -->
    	<!-- <param-value>classpath:/conf/springMVC.xml</param-value> -->
    	<!-- <param-value>classpath*:/conf/springMVC.xml</param-value>  -->
    	<!-- 以上三种形式也可以 -->
    	<param-value>classpath:conf/springMVC.xml</param-value>
    </init-param>

    四:添加springMVC配置文件

    <?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:context="http://www.springframework.org/schema/context"
    	xmlns:mvc="http://www.springframework.org/schema/mvc"
    	default-lazy-init="true"
    	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  
        ">
    
    	<!-- 默认扫描的包路径 -->
    	<context:component-scan base-package="com.itmyhome" />
    
    	<!-- 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="/" />  <!-- 默认放在WebRoot下 -->
    		<property name="suffix" value=".jsp" /> 
    	</bean>
    </beans>
    PS:<context:component-scan base-package="com.itmyhome" />

    base-package后的内容只是包路径,千万不能把类名也写出来 比如com.itmyhome.Login

    否则会报如下错误

    警告: No mapping found for HTTP request with URI [/spring001/login] in DispatcherServlet with name 'springMVC'


    五:后台Action

    package com.itmyhome;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    @Controller
    public class Login {
    
    	@RequestMapping(value="login")
    	public String login(){
    		System.out.println("*******已经进入*********");
    		return "welcome";  //即返回welcome.jsp
    	}
    }

    六:返回JSP

    新建welcome.jsp 里面随便写点内容 如:Hello springMVC!

    最后在浏览器中输入地址 验证 如图:


    工程目录如下:





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  • 原文地址:https://www.cnblogs.com/itmyhome/p/4131342.html
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