Spring Boot获取Startet 404错误

我想第一次使用spring框架。不幸的是，当我调用我的web服务的URL时，我得到了404错误。 Tomcat部署的war文件正在运行（日志中没有错误）。当我在eclipse中执行Example.java时，一切正常。Spring Boot获取Startet 404错误

错误在哪里？

见我的文件/日志：

Example.java

import org.springframework.boot.*; 
import org.springframework.boot.autoconfigure.*; 
import org.springframework.stereotype.*; 
import org.springframework.web.bind.annotation.*; 

@Controller 
@EnableAutoConfiguration 
public class Example { 

    @RequestMapping("/") 
    @ResponseBody 
    String home() { 
     return "Hello World!"; 
    } 

    public static void main(String[] args) throws Exception { 
     SpringApplication.run(Example.class, args); 
    } 
}

的build.gradle开始在Eclipse的应用程序时

buildscript { 
    repositories { 
     jcenter() 
     maven { url 'http://repo.spring.io/snapshot' } 
     maven { url 'http://repo.spring.io/milestone' } 
    } 
    dependencies { 
     classpath 'org.springframework.boot:spring-boot-gradle-plugin:2.0.0.BUILD-SNAPSHOT' 
    } 
} 

task wrapper(type: Wrapper) { 
    gradleVersion = '3.5' 
} 

apply plugin: 'java' 
apply plugin: 'war' 
apply plugin: 'org.springframework.boot' 
apply plugin: 'io.spring.dependency-management' 

jar { 
    baseName = 'myproject' 
    version = '0.0.1-SNAPSHOT' 
} 

repositories { 
    jcenter() 
    maven { url "http://repo.spring.io/snapshot" } 
    maven { url "http://repo.spring.io/milestone" } 
} 

dependencies { 
    //compile 'org.slf4j:slf4j-api:1.7.21' 

    compile("org.springframework.boot:spring-boot-starter-web") 
    testCompile("org.springframework.boot:spring-boot-starter-test") 

    //testCompile 'junit:junit:4.12' 
}

日志

. ____   _   __ _ _ 
/\\/___'_ __ _ _(_)_ __ __ _ \ \ \ \ 
(()\___ | '_ | '_| | '_ \/ _` | \ \ \ \ 
\\/ ___)| |_)| | | | | || (_| | )))) 
    ' |____| .__|_| |_|_| |_\__, |//// 
=========|_|==============|___/=/_/_/_/ 
:: Spring Boot :: (v2.0.0.BUILD-SNAPSHOT) 

2017-06-01 16:22:17.745 INFO 14940 --- [   main] Example         : Starting Example on Laptop-Timo with PID 14940 (started by Timo in C:\Users\Timo\Documents\SE\Semester 4\LabSW\Webservice\TimeShoppingService) 
2017-06-01 16:22:17.745 INFO 14940 --- [   main] Example         : No active profile set, falling back to default profiles: default 
2017-06-01 16:22:17.815 INFO 14940 --- [   main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.ser[email protected]6a01e23: startup date [Thu Jun 01 16:22:17 CEST 2017]; root of context hierarchy 
2017-06-01 16:22:20.098 INFO 14940 --- [   main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) 
2017-06-01 16:22:20.116 INFO 14940 --- [   main] o.apache.catalina.core.StandardService : Starting service [Tomcat] 
2017-06-01 16:22:20.116 INFO 14940 --- [   main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.15 
2017-06-01 16:22:20.264 INFO 14940 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]  : Initializing Spring embedded WebApplicationContext 
2017-06-01 16:22:20.264 INFO 14940 --- [ost-startStop-1] o.s.web.context.ContextLoader   : Root WebApplicationContext: initialization completed in 2449 ms 
2017-06-01 16:22:20.626 INFO 14940 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/] 
2017-06-01 16:22:20.638 INFO 14940 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*] 
2017-06-01 16:22:20.639 INFO 14940 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*] 
2017-06-01 16:22:20.639 INFO 14940 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*] 
2017-06-01 16:22:20.640 INFO 14940 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*] 
2017-06-01 16:22:21.343 INFO 14940 --- [   main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.web.ser[email protected]6a01e23: startup date [Thu Jun 01 16:22:17 CEST 2017]; root of context hierarchy 
2017-06-01 16:22:21.442 INFO 14940 --- [   main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto java.lang.String Example.home() 
2017-06-01 16:22:21.456 INFO 14940 --- [   main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.error(javax.servlet.http.HttpServletRequest) 
2017-06-01 16:22:21.457 INFO 14940 --- [   main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.servlet.error.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) 
2017-06-01 16:22:21.548 INFO 14940 --- [   main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
2017-06-01 16:22:21.549 INFO 14940 --- [   main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
2017-06-01 16:22:21.683 INFO 14940 --- [   main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 
2017-06-01 16:22:21.940 INFO 14940 --- [   main] o.s.j.e.a.AnnotationMBeanExporter  : Registering beans for JMX exposure on startup 
2017-06-01 16:22:22.018 INFO 14940 --- [   main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) 
2017-06-01 16:22:22.024 INFO 14940 --- [   main] Example         : Started Example in 4.81 seconds (JVM running for 5.487) 
2017-06-01 16:22:32.727 INFO 14940 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]  : Initializing Spring FrameworkServlet 'dispatcherServlet' 
2017-06-01 16:22:32.727 INFO 14940 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet  : FrameworkServlet 'dispatcherServlet': initialization started 
2017-06-01 16:22:32.755 INFO 14940 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet  : FrameworkServlet 'dispatcherServlet': initialization completed in 28 ms

来源

2017-06-01 MrBrightside

您正在使用哪个网址？它应该看起来像'http：// localhost：8080'。因为你的tomcat实例使用8080端口。 – eg04lt3r

你打电话的网址是什么？ –

当然。我使用http：// localhost：8080/Service/...“Service”是我的* .war文件的名称。 – MrBrightside

为了将弹簧引导应用程序部署到外部servlet容器，您需要扩展SpringBootServletInitializer。

仅当应用程序独立运行时才会执行主方法。
建议单独运行spring-boot应用程序而不是通过外部servlet容器，但可以同时支持这两种方法。

See the spring documentation for more information.

来源

2017-06-02 04:18:26 Magnus

默认的Spring启动应用程序的上下文路径是'/'。所以在你的情况下，访问本地资源的URL将为http://localhost:8080/

对于自定义上下文路径，请将一个application.properties文件添加到src \ main \ resources。在该属性文件，添加2个属性：

server.contextPath=/Service server.port=12378

你可以参考这个link例如。

来源

2017-06-02 03:27:37 abhi3232

也许网址错误。尝试它像下面的网址。

http://localhost:8080/Service/

来源

2017-06-02 03:45:56 Depp

使用@RestController而不是@Controller，只是给要求如

localhost:8080/

来源

2017-06-02 10:06:29 sreedhar

您还没有与任何特定的字符串映射控制器或方法。

@Controller 
    @EnableAutoConfiguration 
    public class Example { 

     @RequestMapping("/") 
     @ResponseBody 
     String home() { 
      return "Hello World!"; 
     } 
...

您已经使用@RequestMapping("/")，所以你需要使用localhost:8080/网址，而不是localhost:8080/service 它映射的home()方法，如果你想在URL中使用的service只是改变映射@RequestMapping("/service")。

来源

2017-06-02 10:19:01

Spring Boot获取Startet 404错误

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