springMVC demo

最新推荐文章于 2025-05-09 05:15:33 发布

疯狂的Programmer

最新推荐文章于 2025-05-09 05:15:33 发布

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文章标签： spring mvc jar

本文链接：https://blog.youkuaiyun.com/qq_28312193/article/details/74331324

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1.引入jar包(springMVC对应jar包)

报:java.lang.NoClassDefFoundError: org/springframework/core/env/EnvironmentCapable

引入jar: spring-core-4.3.8.RELEASE.jar

报:java.lang.NoClassDefFoundError: Lorg/apache/commons/logging/Log;

引入jar:commons-logging.jar

报:java.lang.NoClassDefFoundError:org/springframework/aop/TargetSource

引入jar:spring-aop-4.3.8.RELEASE.jar

报:org/springframework/expression/ParserContext

引入jar:spring-expression-4.3.8.RELEASE.jar

页面引入

<%@ taglib prefix="c"uri="http://java.sun.com/jsp/jstl/core" %>

引入jar: jstl-1.2.jar

2.Web.xml配置

<display-name>Spring MVC Application</display-name>

<!--配置dispatcherservlet 以及mapping 默认会找到自定义的mvc-dispatcher.xml

-->
<servlet>
    <servlet-name>mvc-dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>mvc-dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

3. mvc-dispatcher.xml配置

<beansxmlns="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/contexthttp://www.springframework.org/schema/context/spring-context.xsd">

<--相应的包位置-->
    <context:component-scan base-package="main.java"/>

    <bean id="viewResolver"class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass"
                  value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

</beans>

4.在index.jsp页面写入

<body>
<a href="hello">Say Hello</a>
</body>

5.在创建main.java包创建类TestAction

public class TestAction {

    @RequestMapping("/hello")
    public ModelAndView helloWorld() {

        String me = "Hello World, Spring 3.0!";
        //ModelAndView：包含了试图要实现的模型数据和逻辑视图名
        //message 为数据的名称，在视图中用来引用的名字
        //me 是对应的值
        //hello 是对应视图的名字。
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("message", me);
        modelAndView.setViewName("hello");
        return modelAndView;

        //以上4个语句相当于一下一句：
        //return newModelAndView("hello","message",me);
    }

}

6.在/WEB-INF/pages/创建hello.jsp页面

  <body>
<p> This is my message: ${message}</p>

</body>