java - 出现意外错误（类型=未找到，状态=404）。- 春季Java

Question

我在 github 中有这个服务https://github.com/felloz/personsService应用程序编译没有错误但是当我试图访问路由http://localhost:8080/demo/persons我得到这个错误：

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Mon May 11 14:55:30 VET 2020
There was an unexpected error (type=Not Found, status=404).
No message available

编译消息：

 .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.7.RELEASE)

2020-05-11 15:05:55.576  INFO 10476 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication on lserrano-PC with PID 10476 (C:\JAVA\Eclipse Projects\demo\target\classes started by lserrano in C:\JAVA\Eclipse Projects\demo)
2020-05-11 15:05:55.592  INFO 10476 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to default profiles: default
2020-05-11 15:05:58.173  INFO 10476 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2020-05-11 15:05:58.198  INFO 10476 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-05-11 15:05:58.198  INFO 10476 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.34]
2020-05-11 15:05:58.386  INFO 10476 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2020-05-11 15:05:58.387  INFO 10476 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2685 ms
2020-05-11 15:05:58.857  INFO 10476 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
2020-05-11 15:05:59.362  INFO 10476 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2020-05-11 15:05:59.377  INFO 10476 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 4.578 seconds (JVM running for 5.433)
2020-05-11 15:06:14.712  INFO 10476 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2020-05-11 15:06:14.712  INFO 10476 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2020-05-11 15:06:14.727  INFO 10476 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 15 ms

您可以检查 github 存储库中的代码，我是 Sprong 的新手，我将不胜感激，我使用 NetBeans 作为 IDE。

添加 server.servlet.context-path=/demo 后

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.7.RELEASE)

2020-05-11 17:26:54.336  INFO 9144 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication on lserrano-PC with PID 9144 (C:\JAVA\Eclipse Projects\demo\target\classes started by lserrano in C:\JAVA\Eclipse Projects\demo)
2020-05-11 17:26:54.336  INFO 9144 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to default profiles: default
2020-05-11 17:26:56.926  INFO 9144 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2020-05-11 17:26:56.957  INFO 9144 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2020-05-11 17:26:56.957  INFO 9144 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.34]
2020-05-11 17:26:57.160  INFO 9144 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/demo]   : Initializing Spring embedded WebApplicationContext
2020-05-11 17:26:57.160  INFO 9144 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2715 ms
2020-05-11 17:26:57.612  INFO 9144 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.
2020-05-11 17:26:58.111  INFO 9144 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path '/demo'
2020-05-11 17:26:58.111  INFO 9144 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 4.591 seconds (JVM running for 5.464)
2020-05-11 17:27:14.361  INFO 9144 --- [nio-8080-exec-2] o.a.c.c.C.[Tomcat].[localhost].[/demo]   : Initializing Spring DispatcherServlet 'dispatcherServlet'
2020-05-11 17:27:14.362  INFO 9144 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2020-05-11 17:27:14.379  INFO 9144 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : Completed initialization in 17 ms

标签： javaspring

Answer 1

你有@RequestMapping({"/persons"})你的控制器，所以试试这个链接http://localhost:8080/persons没有demo