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Ich erstelle ein Beispielprojekt mit Spring Boot und versuchte, / mit einer einfachen String-Nachricht zu verknüpfen. Ich habe @Controller Annotation für diesen Zweck verwendet. Aber aus irgendeinem Grund funktioniert das Mapping nicht. Ich habe auch @ComponentScan und @EnableWebMvc ohne Glück enthalten.Grundlegende Controller-Konfiguration Funktioniert nicht im Spring Boot
Ich habe verwendet maven spring-boot:run Ziel zu laufen. Das Projekt wurde unter https://github.com/tejact/SpringBasicsTreeHouse hochgeladen. Hier
ist die Steuerung:
package Controller;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
@Component
@Controller
public class GifController {
@RequestMapping("/")
@ResponseBody
public String listAllGifs() {
return "Listing all gifs : Madhu";
}
}
Der Hauptanwendungseintrag:
package com.teja;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
@EnableAutoConfiguration
@ComponentScan
@EnableWebMvc
public class AppConfig {
public static void main(String args[]) {
SpringApplication.run(AppConfig.class, args);
}
}
und Frühlings-Boot-Protokolle:
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building SpingBasicsTreeHouse 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> spring-boot-maven-plugin:1.4.0.RELEASE:run (default-cli) > test-compile @ SpingBasicsTreeHouse >>>
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ SpingBasicsTreeHouse ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ SpingBasicsTreeHouse ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 2 source files to C:\Users\Teja\git\SpringBasicsTreeHOuse\SpingBasicsTreeHouse\target\classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ SpingBasicsTreeHouse ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ SpingBasicsTreeHouse ---
[INFO] Nothing to compile - all classes are up to date
[INFO]
[INFO] <<< spring-boot-maven-plugin:1.4.0.RELEASE:run (default-cli) < test-compile @ SpingBasicsTreeHouse <<<
[INFO]
[INFO] --- spring-boot-maven-plugin:1.4.0.RELEASE:run (default-cli) @ SpingBasicsTreeHouse ---
. ____ _ __ _ _
/\\/___'_ __ _ _(_)_ __ __ _ \ \ \ \
(()\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ))))
' |____| .__|_| |_|_| |_\__, |////
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.4.0.RELEASE)
2016-07-31 13:18:24.593 INFO 11084 --- [ main] com.teja.AppConfig : Starting AppConfig on Teja-PC with PID 11084 (C:\Users\Teja\git\SpringBasicsTreeHOuse\SpingBasicsTreeHouse\target\classes started by Teja in C:\Users\Teja\git\SpringBasicsTreeHOuse\SpingBasicsTreeHouse)
2016-07-31 13:18:24.598 INFO 11084 --- [ main] com.teja.AppConfig : No active profile set, falling back to default profiles: default
2016-07-31 13:18:24.712 INFO 11084 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot[email protected]ae4a4a3: startup date [Sun Jul 31 13:18:24 EDT 2016]; root of context hierarchy
2016-07-31 13:18:26.868 INFO 11084 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2016-07-31 13:18:26.885 INFO 11084 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2016-07-31 13:18:26.886 INFO 11084 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.4
2016-07-31 13:18:27.002 INFO 11084 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2016-07-31 13:18:27.003 INFO 11084 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2297 ms
2016-07-31 13:18:27.184 INFO 11084 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2016-07-31 13:18:27.191 INFO 11084 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2016-07-31 13:18:27.434 INFO 11084 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot[email protected]ae4a4a3: startup date [Sun Jul 31 13:18:24 EDT 2016]; root of context hierarchy
2016-07-31 13:18:27.582 INFO 11084 --- [ 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)
2016-07-31 13:18:27.587 INFO 11084 --- [ 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,javax.servlet.http.HttpServletResponse)
2016-07-31 13:18:28.004 INFO 11084 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup
2016-07-31 13:18:28.082 INFO 11084 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2016-07-31 13:18:28.087 INFO 11084 --- [ main] com.teja.AppConfig : Started AppConfig in 4.278 seconds (JVM running for 12.677)
Auch meine pom.xml sieht wie folgt aus:
<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>TreeHouse</groupId>
<artifactId>SpingBasicsTreeHouse</artifactId>
<version>0.0.1-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.4.0.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>1.4.0.RELEASE</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
Vielen Dank. Kristallklar – mc20