【问题标题】:Cant able to run spring application?无法运行spring应用程序?
【发布时间】:2013-12-24 07:50:47
【问题描述】:

我是 Spring 新手,我正在尝试运行 Spring 应用程序,但发现 DispatcherServlet 类未找到异常。以下是我使用的代码,任何人都可以帮助我吗?我尝试了stackoverflow和google提供的许多解决方案,但我没有得到这个问题的答案。提前致谢。

package com.raistudies.actions;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class HelloWorldAction {

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public ModelAndView sayHello(Model model) {
        System.out.println(" hellow world ");
        ModelAndView mav = new ModelAndView();
        mav.setViewName("hello");
        model.addAttribute("helloMessage",
                "Hello World from my spring 3 mvc application");
        return mav;
    }
}

hello.jsp - WEB-INF/jsp/

<html>
    <head>
        <title>Hello world with spring 3 mvc </title>
    </head>
    <body>
        <h1>Welcome! Spring MVC is working well.</h1><br />
        ${helloMessage}
    </body>
</html>

index.jsp - WEB-INF

 <html>
    <head>
        <title>rai studies</title>
    </head>
    <body>

            Welcome...
            <a href="hello"><br>Click here to check the output :-)</a>
    </body>
    </html>

app-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd">

    <context:component-scan base-package="com.raistudies.actions" />
    <context:annotation-config />

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

</beans>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">

    <display-name>HWEWS3MVCIE</display-name>

    <servlet>
        <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
        <servlet-class>org.springfrmaework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/app-config.xml</param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>Spring MVC Dispatcher Servlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

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

我的依赖:

commons-logging-1.1.2.jar
jstl-1.2.jar
log4j-1.2.16.jar
spring-aspects-3.2.5.RELEASE.jar
spring-beans-3.2.5.RELEASE.jar
spring-context-3.2.5.RELEASE.jar
spring-core-3.2.5.RELEASE.jar
spring-expression-3.2.5.RELEASE.jar
spring-web-3.2.5.RELEASE.jar
spring-webmvc-3.2.5.RELEASE.jar

【问题讨论】:

  • 如果找不到您的 DispatcherServlet,我将开始检查类路径依赖项并验证它是否实际包含在您的项目中。
  • 您好,谢谢您的回复,我的lib目录下有spring web mvc jar文件。
  • 看看spring boot

标签: spring spring-mvc


【解决方案1】:
<servlet-class>org.springfrmaework.web.servlet.DispatcherServlet</servlet-class>

上面一行有拼写错误。应该是

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

【讨论】:

  • 非常感谢,问题已经解决,我可以运行应用程序了。再次非常感谢您的及时帮助。我也检查了拼写,但我并没有把注意力集中在 DispatcherServlet 字符串上。
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