java - Spring调度程序servlet找不到index.html。在 DispatcherServlet 中未找到带有 URI [] 的 HTTP 请求的映射

Question

我一直在尝试让一个简单的 spring mvc web 应用程序工作。我或多或少遵循了本教程:http://www.codejava.net/frameworks/spring/spring-mvc-beginner-tutorial-with-spring-tool-suite-ide

请注意，我使用的是 spring 3.2.5.RELEASE。一切工作正常，除了当 Controller 返回“index”时，调度程序 servlet 映射到“/websitebasetest/WEB-INF/views/index.html”，即使“WEB-”中有一个具有该名称的文件，但显然找不到该文件。 INF/ View ”。

Controller 被调用，这太棒了!但后来似乎出现了查找相关 View 的问题，这很奇怪，因为日志表明 View 解析器在“/websitebasetest/WEB-INF/views/index.html”中找到了适当的 View (见下文)。

我的问题是，为什么它找不到 View (而是显示 404)以及如何让它工作？

以下是您可能需要的信息:

项目结构: project-structure.png.

pom.xml 的前半部分(我可以根据要求发布其余部分):

<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tenacious</groupId>
<artifactId>websitebasetest</artifactId>
<name>websitebasetest</name>
<packaging>war</packaging>
<version>1.0.0-BUILD-SNAPSHOT</version>

<properties>
    <java-version>1.6</java-version>
    <org.springframework-version>3.2.5.RELEASE</org.springframework-version>
    <org.aspectj-version>1.6.10</org.aspectj-version>
    <org.slf4j-version>1.6.6</org.slf4j-version>
</properties>

<dependencies>
    <!-- Spring core dependency-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${org.springframework-version}</version>
        <exclusions>
            <!-- Exclude Commons Logging in favor of SLF4j -->
            <exclusion>
                <groupId>commons-logging</groupId>
                <artifactId>commons-logging</artifactId>
             </exclusion>
        </exclusions>
    </dependency>

    <!-- Spring MVC dependency-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${org.springframework-version}</version>
    </dependency>

根上下文.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

<!-- Root Context: defines shared resources visible to all other web components -->
</beans>    

servlet-context.xml:

<?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.xsd
    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">

<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />

<!-- Handles HTTP GET requests for "/css/**" and "/js/**" by efficiently serving up 
     static resources in the ${webappRoot}/css and the ${webappRoot}/js directories respectively -->
<resources mapping="/css/**" location="/WEB-INF/css" />
<resources mapping="/js/**" location="/WEB-INF/js" />

<!-- Resolves views selected for rendering by @Controllers to .html 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=".html" />
</beans:bean>

<context:component-scan base-package="com.tenacious.websitebasetest" />

</beans:beans>

web.xml:

<?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:

package com.tenacious.websitebasetest;

import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

/**
 * Handles requests for the application "home" page.
 */
@Controller
public class HomeController 
{   
    private static final Logger logger =     LoggerFactory.getLogger(HomeController.class);

    /**
     * Simply selects the home view to render by returning its name.
     */
    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String index(Locale locale, Model model) 
    {
        logger.info("Hello world!");

        return "index";
    }
}

index.html:

<html>
<head>
    <title>Home</title>
</head>
<body>
    <h1>Hello world!</h1>
</body>
</html>

我试图访问的 URL:localhost:8080/websitebasetest/

控制台日志:

Aug 14, 2016 2:28:49 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 690 ms
INFO : org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization started
INFO : org.springframework.web.context.support.XmlWebApplicationContext - Refreshing Root WebApplicationContext: startup date [Sun Aug 14 14:28:50 EDT 2016]; root of context hierarchy
INFO : org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/spring/root-context.xml]
INFO : org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@5792f62e: defining beans []; root of factory hierarchy
INFO : org.springframework.web.context.ContextLoader - Root WebApplicationContext: initialization completed in 199 ms
INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'appServlet': initialization started
INFO : org.springframework.web.context.support.XmlWebApplicationContext - Refreshing WebApplicationContext for namespace 'appServlet-servlet': startup date [Sun Aug 14 14:28:50 EDT 2016]; parent: Root WebApplicationContext
INFO : org.springframework.beans.factory.xml.XmlBeanDefinitionReader - Loading XML bean definitions from ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]
INFO : org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor - JSR-330 'javax.inject.Inject' annotation found and supported for autowiring
INFO : org.springframework.beans.factory.support.DefaultListableBeanFactory - Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@67b7829a: defining beans [mvcContentNegotiationManager,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0,org.springframework.format.support.FormattingConversionServiceFactoryBean#0,org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter#0,org.springframework.web.servlet.handler.MappedInterceptor#0,org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver#0,org.springframework.web.servlet.mvc.annotation.ResponseStatusExceptionResolver#0,org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver#0,org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping,org.springframework.web.servlet.mvc.HttpRequestHandlerAdapter,org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter,org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0,org.springframework.web.servlet.handler.SimpleUrlHandlerMapping#0,org.springframework.web.servlet.resource.ResourceHttpRequestHandler#1,org.springframework.web.servlet.handler.SimpleUrlHandlerMapping#1,org.springframework.web.servlet.view.InternalResourceViewResolver#0,homeController,org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.ConfigurationClassPostProcessor.importAwareProcessor]; parent: org.springframework.beans.factory.support.DefaultListableBeanFactory@5792f62e
INFO : org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped "{[/],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public java.lang.String com.tenacious.websitebasetest.HomeController.index(java.util.Locale,org.springframework.ui.Model)
INFO : org.springframework.web.servlet.handler.SimpleUrlHandlerMapping - Mapped   URL path [/css/**] onto handler 'org.springframework.web.servlet.resource.ResourceHttpRequestHandler#0'
INFO : org.springframework.web.servlet.handler.SimpleUrlHandlerMapping - Mapped URL path [/js/**] onto handler 'org.springframework.web.servlet.resource.ResourceHttpRequestHandler#1'
INFO : org.springframework.web.servlet.DispatcherServlet - FrameworkServlet 'appServlet': initialization completed in 523 ms
Aug 14, 2016 2:28:51 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 1665 ms
INFO : com.tenacious.websitebasetest.HomeController - Hello world!
WARN : org.springframework.web.servlet.PageNotFound - No mapping found for HTTP request with URI [/websitebasetest/WEB-INF/views/index.html] in     DispatcherServlet with name 'appServlet'

404页面:

HTTP 状态 404 -

输入状态报告

消息

描述请求的资源不可用。

Pivotal tc 运行时 3.1.2.RELEASE/8.0.26.B.RELEASE

任何帮助将不胜感激。谢谢。

Answer 1

我找到了解决办法。

在 servlet 上下文中我添加了:

<resources mapping="/views/**" location="/WEB-INF/views/" />

并编辑了这部分:

<!-- Resolves views selected for rendering by @Controllers to .html resources in the /WEB-INF/webcontent/views directory -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <beans:property name="prefix" value="/views/" />
    <beans:property name="suffix" value=".html" />
</beans:bean>

View 解析器从 Controller 接收“index”，然后将其更改为“/views/index.html”。由于我为以“/views/**”开头的任何内容添加了资源映射以映射到“/WEB-INF/views/”，因此它现在可以正确找到 View xD。

映射到“/websitebasetest/WEB-INF/views/index.html”(这是它之前所做的)似乎是不正确的，因为它无法找到该文件。

特别感谢一路上提供帮助的人们!!