Spring Application Build Fehler

Question

Ich bin nicht in der Lage herauszufinden, was beim Laufen falsch ist mvn Spring-Boot: run Befehl. mvn sauber installieren gibt einen Build-Erfolg, aber für mvn Spring-Boot: run ich bekomme einen Build-Fehler. Dies ist mein Fehlerprotokoll in meiner Konsole, wenn ich mvn Spring-Boot ausführen: run -X.

[WARNING] 
    java.lang.reflect.InvocationTargetException 
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
      at java.lang.reflect.Method.invoke(Method.java:498) 
      at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:506) 
      at java.lang.Thread.run(Thread.java:745) 
    Caused by: java.lang.NoClassDefFoundError: org/springframework/core/env/EnvironmentCapable 
      at java.lang.ClassLoader.defineClass1(Native Method) 
      at java.lang.ClassLoader.defineClass(ClassLoader.java:763) 
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) 
      at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) 
      at java.net.URLClassLoader.access$100(URLClassLoader.java:73) 
      at java.net.URLClassLoader$1.run(URLClassLoader.java:368) 
      at java.net.URLClassLoader$1.run(URLClassLoader.java:362) 
      at java.security.AccessController.doPrivileged(Native Method) 
      at java.net.URLClassLoader.findClass(URLClassLoader.java:361) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
      at com.example.DemoApplication.main(DemoApplication.java:10) 
      ... 6 more 
    Caused by: java.lang.ClassNotFoundException: org.springframework.core.env.EnvironmentCapable 
      at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
      ... 18 more 
    [INFO] ------------------------------------------------------------------------ 
    [INFO] BUILD FAILURE 
    [INFO] ------------------------------------------------------------------------ 
    [INFO] Total time: 10.024 s 
    [INFO] Finished at: 2016-12-11T15:24:36+05:30 
    [INFO] Final Memory: 23M/223M 
    [INFO] ------------------------------------------------------------------------ 
    [ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.4.2.RELEASE:run (default-cli) on project demo: An exception occurred while running. null: InvocationTargetException: org/springframework/core/env/EnvironmentCapable: org.springframework.core.env.EnvironmentCapable -> [Help 1] 
    org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.4.2.RELEASE:run (default-cli) on project demo: An exception occurred while running. null 
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212) 
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) 
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) 
      at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116) 
      at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80) 
      at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51) 
      at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128) 
      at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307) 
      at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193) 
      at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106) 
      at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863) 
      at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288) 
      at org.apache.maven.cli.MavenCli.main(MavenCli.java:199) 
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
      at java.lang.reflect.Method.invoke(Method.java:498) 
      at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) 
      at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) 
      at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) 
      at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) 
    Caused by: org.apache.maven.plugin.MojoExecutionException: An exception occurred while running. null 
      at org.springframework.boot.maven.AbstractRunMojo$IsolatedThreadGroup.rethrowUncaughtException(AbstractRunMojo.java:475) 
      at org.springframework.boot.maven.RunMojo.runWithMavenJvm(RunMojo.java:92) 
      at org.springframework.boot.maven.AbstractRunMojo.run(AbstractRunMojo.java:234) 
      at org.springframework.boot.maven.AbstractRunMojo.execute(AbstractRunMojo.java:170) 
      at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134) 
      at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207) 
      ... 20 more 
    Caused by: java.lang.reflect.InvocationTargetException 
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
      at java.lang.reflect.Method.invoke(Method.java:498) 
      at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:506) 
      at java.lang.Thread.run(Thread.java:745) 
    Caused by: java.lang.NoClassDefFoundError: org/springframework/core/env/EnvironmentCapable 
      at java.lang.ClassLoader.defineClass1(Native Method) 
      at java.lang.ClassLoader.defineClass(ClassLoader.java:763) 
      at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) 
      at java.net.URLClassLoader.defineClass(URLClassLoader.java:467) 
      at java.net.URLClassLoader.access$100(URLClassLoader.java:73) 
      at java.net.URLClassLoader$1.run(URLClassLoader.java:368) 
      at java.net.URLClassLoader$1.run(URLClassLoader.java:362) 
      at java.security.AccessController.doPrivileged(Native Method) 
      at java.net.URLClassLoader.findClass(URLClassLoader.java:361) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
      at com.example.DemoApplication.main(DemoApplication.java:10) 
      ... 6 more 
    Caused by: java.lang.ClassNotFoundException: org.springframework.core.env.EnvironmentCapable 
      at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
      at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
      ... 18 more 
    [ERROR] 
    [ERROR] 
    [ERROR] For more information about the errors and possible solutions, please read the following articles: 
    [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException 

Dies ist meine pom.xml. Ich habe auch pom.xml von den aktiven Maven Profile in Eclipse-IDE-entfernt, weil es als eine der Lösungen in diesem Link Spring Maven clean error - The requested profile "pom.xml" could not be activated because it does not exist

 <?xml version="1.0" encoding="UTF-8"?> 
     <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>com.example</groupId> 
     <artifactId>demo</artifactId> 
     <version>0.0.1-SNAPSHOT</version> 
     <packaging>jar</packaging> 

     <name>Test</name> 
     <description>Demo project for Spring Boot</description> 

     <parent> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-parent</artifactId> 
      <version>1.4.2.RELEASE</version> 
      <relativePath />  
     </parent> 

     <properties> 
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> 
      <java.version>1.8</java.version> 
      <start-class>com.example.DemoApplication</start-class> 
     </properties> 

     <dependencies> 
      <dependency> 
       <groupId>org.springframework.boot</groupId> 
       <artifactId>spring-boot-starter</artifactId> 
      </dependency> 


     </dependencies> 

     <build> 
     <pluginManagement> 
      <plugins> 
       <plugin> 
        <groupId>org.springframework.boot</groupId> 
        <artifactId>spring-boot-maven-plugin</artifactId> 
       </plugin> 

       <!-- <plugin> 
        <groupId>org.codehaus.mojo</groupId> 
        <artifactId>exec-maven-plugin</artifactId> 
       </plugin> --> 
      </plugins> 
      </pluginManagement> 

     </build> 
     </project> 

Answer 1

zuerst überprüfen Sie Ihre Klassennamen gegeben wurde. maven plugin sagt com.example Klasse nicht gefunden! Was ist <start-class>com.example</start-class> in Ihrer pom.xml-Datei?

Answer 2

Ich fand die Lösung nach dem Debuggen der Abhängigkeitsverwaltung in pom.xml und welche Ausschlüsse erforderlich sind. Daher müssen wir einige Ausnahmen in die Abhängigkeit aufnehmen, damit diese Basisanwendung ausgeführt wird. Hier ist meine letzte pom.xml, die es geschafft hat.

  <?xml version="1.0" encoding="UTF-8"?> 
      <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>ok.one</groupId> 
       <artifactId>hello</artifactId> 
       <version>0.0.1-SNAPSHOT</version> 
       <packaging>jar</packaging> 

       <name>hello</name> 
       <description>Demo project for Spring Boot</description> 

       <parent> 
        <!-- lookup parent from repository --> 
        <groupId>org.springframework.boot</groupId> 
        <artifactId>spring-boot-starter-parent</artifactId> 
        <version>1.3.6.RELEASE</version> 
        <relativePath /> 
       </parent> 

       <properties> 
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> 
        <java.version>1.8</java.version> 
        <start-class>ok.one.HelloApplication</start-class> 
       </properties> 

       <dependencies> 
        <dependency> 
           <groupId>org.springframework.boot</groupId> 
           <artifactId>spring-boot-starter-web</artifactId> 
           <!-- Exclusions to allow SpringBoot execute on HCP --> 
           <exclusions> 
            <exclusion> 
             <groupId>org.springframework.boot</groupId> 
             <artifactId>spring-boot-starter-tomcat</artifactId> 
            </exclusion> 
            <exclusion> 
             <groupId>org.apache.tomcat.embed</groupId> 
             <artifactId>tomcat-embed-el</artifactId> 
            </exclusion> 
            <exclusion> 
             <artifactId>logback-classic</artifactId> 
             <groupId>ch.qos.logback</groupId> 
            </exclusion> 
           </exclusions> 
          </dependency> 

       </dependencies> 

       <build> 
        <plugins> 
         <plugin> 
          <groupId>org.springframework.boot</groupId> 
          <artifactId>spring-boot-maven-plugin</artifactId> 
         </plugin> 
        </plugins> 
       </build> 


      </project>