Spring MVC 控制器请求映射无法正常工作

Question

在使用 spring mvc 编写了所有显示简单页面的必要代码后，我收到了 HTTP 404 – Not Found

服务器：Tomcat 8 IDE : Intelijj IDE

代码包名称：ma.financialforce；

家庭控制器

@Controller
public class HomeController {

    @RequestMapping("/")
    public String showPage() {
        return "main-page";
    }
}

web.xml

<?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">

    <display-name>spring-mvc-demo</display-name>

    <!-- Spring MVC Configs -->

    <!-- Step 1: Configure Spring MVC Dispatcher Servlet -->
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/spring-mvc-demo-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <!-- Step 2: Set up URL mapping for Spring MVC Dispatcher Servlet -->
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

spring-mvc-demo-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: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.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!-- Step 3: Add support for component scanning -->
    <context:component-scan base-package="ma.financialforce" />

    <!-- Step 4: Add support for conversion, formatting and validation support -->
    <mvc:annotation-driven/>

    <!-- Step 5: Define Spring MVC view resolver -->
    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/view/" />
        <property name="suffix" value=".jsp" />
    </bean>

</beans>

*main-page.jsp : *

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
    <head>
        <title>A jsp page</title>
    </head>
    <body>
        <h1>Hello world</h1>
    </body>
</html>

Run/debug 配置截图： 这是我的 run/config 应用的截图

Answer 1

在 intellij 中，在 run/debug 配置下，单击部署选项卡并检查已设置的上下文根。 Intellij 默认情况下将上下文根设置为项目名称，在您的情况下没有上下文根。所以部署选项卡应该有上下文根作为 /

Spring MVC 控制器请求映射无法正常工作

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java

spring

spring-mvc

tomcat8

jakarta-ee