一尘不染

Spring MVC Hello World应用程序无法正常工作

spring-mvc

我是Spring MVC的新手,我正在尝试编写一个简单的Web应用程序以开始使用Spring。

这是我所拥有的:

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_2_5.xsd" 
    id="WebApp_ID" version="2.5"> 
    <display-name>HatifimWeb</display-name> 
    <welcome-file-list> 
        <welcome-file>index.jsp</welcome-file> 
    </welcome-file-list> 
    <servlet> 
        <servlet-name>main</servlet-name> 
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
        <load-on-startup>1</load-on-startup> 
    </servlet> 
    <servlet-mapping> 
        <servlet-name>main</servlet-name> 
        <url-pattern>/</url-pattern> 
    </servlet-mapping> 
</web-app>

main-servlet.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:p="http://www.springframework.org/schema/p" 
    xmlns:context="http://www.springframework.org/schema/context" 
    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"> 
    <context:component-scan base-package="springapp.controller" /> 
    <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/jsps/" /> 
        <property name="suffix" value=".jsp" /> 
    </bean> 
</beans>

LoginController.java

package springapp.controller;

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

@Controller 
public class LoginController {

    @RequestMapping("/Login") 
    public ModelAndView handleRequest() throws Exception { 
        System.out.println("Login...");

        return new ModelAndView("Login", "message", "test"); 
    }

}

index.jsp

 <%@ page language="java" contentType="text/html; charset=ISO-8859-1" 
    pageEncoding="ISO-8859-1"%> 
<!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=ISO-8859-1"> 
<title>Insert title here</title> 
</head> 
<body> 
    Hello. 
    <br /> 
    <a href="Login">login</a> 
</body> 
</html>

Login.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" 
    pageEncoding="ISO-8859-1"%> 
<!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=ISO-8859-1"> 
<title>poopidipoo</title> 
</head> 
<body> 
    ${message} 
</body> 
</html>

index.jsp可以很好地启动,但是当我单击导航到登录页面时,我得到404。我使用的是Tomcat7。由于想法不清,看来DispatcherServlet由于某种原因未被调用。

可能是什么问题呢?

提前致谢。


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2020-06-01

共1个答案

一尘不染

问题可能是您缺少页面中的上下文路径,请尝试以下方式:

<a href="${pageContext.request.contextPath}/Login">login</a>

更新:

您能否也添加 <mvc:annotation-driven/>到您的main-servlet.xml

2020-06-01