我试图运行一个简单的 Spring boot 应用程序 2 天，但仍然无法使其工作。我检查了所有相关问题和博客，但问题仍然存在。
我的项目结构如下所示。
POM.xml
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</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-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
</dependencies>
WebApplication.java
@SpringBootApplication
public class WebApplication extends SpringBootServletInitializer{
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(WebApplication.class);
}
public static void main(String[] args) {
SpringApplication.run(WebApplication.class, args);
}
}
应用程序属性
server.servlet.context-path=/EBS-web
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp
logging.level.org.springframework.web=DEBUG
登录 Controller
@Controller
public class LoginController {
@RequestMapping(path="/")
public String login() {
System.out.println("******************logging************************");
return "login";
}
}
登录.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>
Hi Login
</body>
</html>
每当我尝试将应用程序作为 Spring Boot App(Eclipse 的 STS 插件)运行并访问 http://localhost:8080/EBS-web/ 它在 UI 上给出以下错误消息
Whitelabel Error Page This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sun Sep 23 17:34:52 IST 2018 There was an unexpected error (type=Not Found, status=404). No message available
从下面的堆栈跟踪中，我可以看到 spring 能够获取处理程序方法，但无法找到关联的 View 。
2018-09-23 17:44:12.248 DEBUG 14728 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet : Last-Modified value for [/EBS-web/] is: -1
******************logging************************
2018-09-23 17:44:12.258 DEBUG 14728 --- [nio-8080-exec-2] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, application/xhtml+xml, image/webp, image/apng, application/xml;q=0.9, /;q=0.8] based on Accept header types and producible media types [/]) 2018-09-23 17:44:12.258 DEBUG 14728 --- [nio-8080-exec-2] o.s.w.servlet.view.BeanNameViewResolver : No matching bean found for view name 'login' 2018-09-23 17:44:12.260 DEBUG 14728 --- [nio-8080-exec-2] o.s.w.s.v.ContentNegotiatingViewResolver : Returning [org.springframework.web.servlet.view.JstlView: name 'login'; URL [/WEB-INF/jsp/login.jsp]] based on requested media type 'text/html' 2018-09-23 17:44:12.260 DEBUG 14728 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet : Rendering view [org.springframework.web.servlet.view.JstlView: name 'login'; URL [/WEB-INF/jsp/login.jsp]] in DispatcherServlet with name 'dispatcherServlet' 2018-09-23 17:44:12.264 DEBUG 14728 --- [nio-8080-exec-2] o.s.web.servlet.view.JstlView : Forwarding to resource [/WEB-INF/jsp/login.jsp] in InternalResourceView 'login' 2018-09-23 17:44:12.266 DEBUG 14728 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet : DispatcherServlet with name 'dispatcherServlet' processing GET request for [/EBS-web/WEB-INF/jsp/login.jsp] 2018-09-23 17:44:12.267 DEBUG 14728 --- [nio-8080-exec-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Looking up handler method for path /WEB-INF/jsp/login.jsp 2018-09-23 17:44:12.268 DEBUG 14728 --- [nio-8080-exec-2] s.w.s.m.m.a.RequestMappingHandlerMapping : Did not find handler method for [/WEB-INF/jsp/login.jsp] 2018-09-23 17:44:12.268 DEBUG 14728 --- [nio-8080-exec-2] o.s.w.s.handler.SimpleUrlHandlerMapping : Matching patterns for request [/WEB-INF/jsp/login.jsp] are [/**]
最佳答案
添加@RestController而不是@Controller。然后运行您的 Java 应用程序。这应该可以解决 WhiteLabel 错误
关于java - Spring Boot - 无法解决 Whitelabel 错误页面，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/52466063/