java - 请求的资源 (/) 不可用

Question

我刚刚开始学习 Spring MVC 3，一开始运行简单的 hello world 程序时遇到问题

我正在尝试获取this启动并运行，但由于某种原因我不能

我经常收到此错误

type Status report

message /

description The requested resource (/) is not available.

这是我的 servlet-context.xml 文件

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:beans="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
        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">

    <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
    
    <!-- Enables the Spring MVC @Controller programming model -->
    <annotation-driven />   
    
    <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
    <resources mapping="/resources/**" location="/resources/" />

    <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
    <beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <beans:property name="prefix" value="/WEB-INF/views/" />
        <beans:property name="suffix" value=".jsp" />
    </beans:bean>
    
    <context:component-scan base-package="com.test.test" />
    
    
    
</beans:beans>

web.xml 文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

    <!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/spring/root-context.xml</param-value>
    </context-param>
    
    <!-- Creates the Spring Container shared by all Servlets and Filters -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- Processes application requests -->
    <servlet>
        <servlet-name>appServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
        
    <servlet-mapping>
        <servlet-name>appServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

</web-app>

HomeController.java

包com.test.test;

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


@Controller
public class HomeController {
    
    @RequestMapping(value = "/")
    public String home() {      
        return "WEB-INF/views/home.jsp";
    }
    
}

我使用的是 Tomcat 7。

有人知道这个错误是什么？

Answer 1

@Tenelope 您不需要返回 "WEB-INF/views/home.jsp"; 您只需返回 "home" 因为您已在 servlet 中配置了它- 上下文:

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

我给你的建议是下载 spring 源代码(类似于 IDE 的 eclipse):

http://www.springsource.org/springsource-tool-suite-download

下载后，您只需转到文件>新建> Spring模板项目> Spring MVC项目

完成创建项目后，将为您创建工作模板项目(结构化项目、示例 Controller 文件、示例 View 、pom.xml 等)。包括您正在谈论的 "/" 示例。您可以构建它并将其部署到 tomcat 或其他任何地方。

这样您就已经获得了工作示例，并且可以从那里获取它。

顺便说一句。看看这个:

https://github.com/SpringSource/spring-mvc-showcase/blob/master/MasteringSpringMVC3.pdf?raw=true

这足以让您顺利开始使用 Spring MVC。