Whitelabel错误页面发生意外错误(类型=未找到，状态= 404). /WEB-INF/views/home.jsp [英] Whitelabel Error Page There was an unexpected error (type=Not Found, status=404). /WEB-INF/views/home.jsp
问题描述
我正在关注Spring in Action(第2部分)，并尝试创建书中所示的Spittr应用程序.
(with Spring Tool Suite 7.3.7. and Maven.)
I am following Spring in Action (part 2) and trying to create the Spittr application as the book shows.
(with Spring Tool Suite 7.3.7. and Maven.)
问题是我遇到以下错误:
The problem is that I am getting the following error:
Whitelabel错误页面.
Whitelabel Error Page.
此应用程序没有针对/error的显式映射，因此您将其视为备用.
This application has no explicit mapping for /error, so you are seeing this as a fallback.
2016年4月4日星期四16:21:23 发生意外错误(类型=未找到，状态= 404). /WEB-INF/views/home.jsp
Thu Apr 07 16:21:23 CEST 2016 There was an unexpected error (type=Not Found, status=404). /WEB-INF/views/home.jsp
包装结构为:
如您所见，如果路径出现问题，我试图将/WEB-INF/views/home.jsp放在多个位置.
As you see I tried to place the /WEB-INF/views/home.jsp in several places in, case there was a problem with the path.
DispatcherServlet配置类:
DispatcherServlet Configuration Class:
package com.spittr.config;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
public class SpittrWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer
{
@Override
protected String[] getServletMappings() {
return new String[] { "/" };
}
@Override
protected Class<?>[] getRootConfigClasses() {
return new Class<?>[] { RootConfig.class };
}
@Override
protected Class<?>[] getServletConfigClasses() {
return new Class<?>[] { WebConfig.class };
}
}
WebConfig.java类:
WebConfig.java class:
package com.spittr.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.web.ErrorAttributes;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@Configuration
@EnableWebMvc
@ComponentScan("com.spitter.web")
public class WebConfig extends WebMvcConfigurerAdapter
{
@Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
resolver.setExposeContextBeansAsAttributes(true);
return resolver;
}
@Override
public void configureDefaultServletHandling(
DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
}
RootConfig.java类: 包com.spittr.config;
RootConfig.java class: package com.spittr.config;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
@Configuration
@ComponentScan(basePackages={"spitter"},
excludeFilters={
@Filter(type=FilterType.ANNOTATION, value=EnableWebMvc.class)})
public class RootConfig {
}
@Controller类.
The @Controller class.
package com.spittr.web;
import static org.springframework.web.bind.annotation.RequestMethod.*;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@Controller
public class HomeController
{
@RequestMapping(value="/", method=GET)
public String home()
{
return "home";
}
}
pom.xml:
<?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/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com</groupId>
<artifactId>spittr</artifactId>
<version>1.2.0</version>
<packaging>jar</packaging>
<name>Spittr</name>
<description>Test 1</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.7</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
home.jsp:
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page session="false" %>
<html>
<head>
<title>Spittr</title>
<link rel="stylesheet"
type="text/css"
href="<c:url value="/resources/style.css" />" >
</head>
<body>
<h1>Welcome to Spittr</h1>
<a href="<c:url value="/spittles" />">Spittles</a> |
<a href="<c:url value="/spitter/register" />">Register</a>
</body>
</html>
基本上，您可以在书中找到相同的内容. 我根本不知道该怎么办.
Basically is the same that you can find in the book. I simply don't know what else to do.
谢谢.
推荐答案
问题出在您的项目结构上，WEB-INF应该在src/main/webapp下，而不是在src/main下.
The Problem is with your Project Structure, the WEB-INF should be under src/main/webapp and Not src/main.
也就是说，根据您的ViewResolver，您的JSP文件应位于src/main/webapp/WEB-INF/views/home.jsp下.
That is, as per your ViewResolver your JSP file should be under src/main/webapp/WEB-INF/views/home.jsp.
有关 Maven标准目录布局的详细信息.
PS:如果您打算在Tomcat中部署此应用程序，那么您将面临
PS: If you are planning to deploy this app in Tomcat then you'll face this Issue, the above sample app resolves this issue.
这篇关于Whitelabel错误页面发生意外错误(类型=未找到，状态= 404). /WEB-INF/views/home.jsp的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
