Ich versuche, das REST-Controller-Beispiel auf der Spring Boot-Website anzupassen. Leider habe ich den folgenden Fehler erhalten, wenn ich versuche, auf die localhost:8080/item
URL zuzugreifen .
{
"timestamp": 1436442596410,
"status": 404,
"error": "Not Found",
"message": "No message available",
"path": "/item"
}
POM:
<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>SpringBootTest</groupId>
<artifactId>SpringBootTest</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<javaVersion>1.8</javaVersion>
<mainClassPackage>com.nice.application</mainClassPackage>
<mainClass>${mainClassPackage}.InventoryApp</mainClass>
</properties>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>${javaVersion}</source>
<target>${javaVersion}</target>
</configuration>
</plugin>
<!-- Makes the Spring Boot app executable for a jar file. The additional configuration is needed for the cmd: mvn spring-boot:repackage
OR mvn spring-boot:run -->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>${mainClass}</mainClass>
<layout>ZIP</layout>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- Create a jar with a manifest -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
<configuration>
<archive>
<manifest>
<mainClass>${mainClass}</mainClass>
</manifest>
</archive>
</configuration>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<!-- Import dependency management from Spring Boot. This replaces the usage of the Spring Boot parent POM file. -->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>1.2.5.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- more comfortable usage of several features when developing in an IDE. Developer tools are automatically disabled when
running a fully packaged application. If your application is launched using java -jar or if it’s started using a special classloader,
then it is considered a 'production application'. Applications that use spring-boot-devtools will automatically restart whenever files
on the classpath change. -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
</dependencies>
</dependencyManagement>
<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>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>15.0</version>
</dependency>
</dependencies>
</project>
Starter-Anwendung:
package com.nice.application;
@SpringBootApplication // same as @Configuration @EnableAutoConfiguration @ComponentScan
public class InventoryApp {
public static void main( String[] args ) {
SpringApplication.run( InventoryApp.class, args );
}
}
REST-Controller:
package com.nice.controller;
@RestController // shorthand for @Controller and @ResponseBody rolled together
public class ItemInventoryController {
public ItemInventoryController() {
}
@RequestMapping( "/item" )
public String getStockItem() {
return "It's working...!";
}
}
Ich baue dieses Projekt mit Maven. Startete es als jar (spring-boot: run) und auch innerhalb der IDE (Eclipse).
Konsolenprotokoll:
2015-07-09 14:21:52.132 INFO 1204 --- [ main] c.b.i.p.s.e.i.a.InventoryApp : Starting InventoryApp on 101010002016M with PID 1204 (C:\eclipse_workspace\SpringBootTest\target\classes started by MFE in C:\eclipse_workspace\SpringBootTest)
2015-07-09 14:21:52.165 INFO 1204 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@7a3d45bd: startup date [Thu Jul 09 14:21:52 CEST 2015]; root of context hierarchy
2015-07-09 14:21:52.661 INFO 1204 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'beanNameViewResolver': replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter.class]]
2015-07-09 14:21:53.430 INFO 1204 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2015-07-09 14:21:53.624 INFO 1204 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2015-07-09 14:21:53.625 INFO 1204 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.23
2015-07-09 14:21:53.731 INFO 1204 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2015-07-09 14:21:53.731 INFO 1204 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1569 ms
2015-07-09 14:21:54.281 INFO 1204 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2015-07-09 14:21:54.285 INFO 1204 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2015-07-09 14:21:54.285 INFO 1204 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2015-07-09 14:21:54.508 INFO 1204 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@7a3d45bd: startup date [Thu Jul 09 14:21:52 CEST 2015]; root of context hierarchy
2015-07-09 14:21:54.573 INFO 1204 --- [ 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.BasicErrorController.error(javax.servlet.http.HttpServletRequest)
2015-07-09 14:21:54.573 INFO 1204 --- [ 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.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest)
2015-07-09 14:21:54.594 INFO 1204 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2015-07-09 14:21:54.594 INFO 1204 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2015-07-09 14:21:54.633 INFO 1204 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2015-07-09 14:21:54.710 INFO 1204 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2015-07-09 14:21:54.793 INFO 1204 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2015-07-09 14:21:54.795 INFO 1204 --- [ main] c.b.i.p.s.e.i.a.InventoryApp : Started InventoryApp in 2.885 seconds (JVM running for 3.227)
2015-07-09 14:22:10.911 INFO 1204 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2015-07-09 14:22:10.911 INFO 1204 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2015-07-09 14:22:10.926 INFO 1204 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 15 ms
Was ich bisher versucht habe:
- Zugriff auf die URL mit dem Anwendungsnamen (InventoryApp)
- Setzen Sie eine andere
@RequestMapping("/")
auf Klassenebene derItemInventoryController
Soweit ich verstanden habe, benötige ich bei Verwendung von Spring Boot keinen Anwendungskontext. Habe ich recht?
Was kann ich noch tun, um über eine URL auf die Methode zuzugreifen?