彈簧啓動：運行拋出ClassNotFoundException的

Question

我試圖得到一些簡單的REST服務完成的，但是我有春啓動，因爲它說ClassNotFoundException的問題，這裏的一些細節：

的pom.xml

<?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>it.athirat</groupId> 
<artifactId>sww2.1</artifactId> 
<version>1.0-SNAPSHOT</version> 
<packaging>pom</packaging> 
<properties> 
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
    <start-class>it.athirat.controller.Application</start-class> 
</properties> 
<parent> 
    <groupId>org.springframework.boot</groupId> 
    <artifactId>spring-boot-starter-parent</artifactId> 
    <version>1.5.3.RELEASE</version> 
</parent> 

<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.jayway.jsonpath</groupId> 
     <artifactId>json-path</artifactId> 
     <scope>test</scope> 
    </dependency> 
</dependencies> 
<build> 
    <plugins> 
     <plugin> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-maven-plugin</artifactId> 
     </plugin> 
    </plugins> 
</build> 

<repositories> 
    <repository> 
     <id>spring-releases</id> 
     <url>https://repo.spring.io/libs-release</url> 
    </repository> 
</repositories> 
<pluginRepositories> 
    <pluginRepository> 
     <id>spring-releases</id> 
     <url>https://repo.spring.io/libs-release</url> 
    </pluginRepository> 
</pluginRepositories> 

Application.java（在src /主/爪哇/它/ athirat /控制器）

package it.athirat.controller; 

import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
@SpringBootApplication 
public class Application { 
    public static void main(String[] args) { 
     SpringApplication.run(Application.class, args); 
    } 
} 

堆棧跟蹤：

$ mvn spring-boot:run 
[INFO] Scanning for projects... 
[INFO] 
[INFO] ------------------------------------------------------------------------ 
[INFO] Building sww2.1 1.0-SNAPSHOT 
[INFO] ------------------------------------------------------------------------ 
[INFO] 
[INFO] >>> spring-boot-maven-plugin:1.5.3.RELEASE:run (default-cli) > test-compile @ sww2.1 >>> 
[INFO] 
[INFO] <<< spring-boot-maven-plugin:1.5.3.RELEASE:run (default-cli) < test-compile @ sww2.1 <<< 
[INFO] 
[INFO] --- spring-boot-maven-plugin:1.5.3.RELEASE:run (default-cli) @ sww2.1 --- 
[WARNING] 
java.lang.ClassNotFoundException: it.athirat.controller.Application 
     at java.net.URLClassLoader.findClass(URLClassLoader.java:381) 
     at java.lang.ClassLoader.loadClass(ClassLoader.java:424) 
     at java.lang.ClassLoader.loadClass(ClassLoader.java:357) 
     at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:522) 
     at java.lang.Thread.run(Thread.java:748) 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD FAILURE 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 2.003 s 
[INFO] Finished at: 2017-05-22T11:51:49+02:00 
[INFO] Final Memory: 17M/226M 
[INFO] ------------------------------------------------------------------------ 
[ERROR] Failed to execute goal org.springframework.boot:spring-boot-maven-plugin:1.5.3.RELEASE:run (default-cli) on project sww2.1: An exception occurred while running. it.athirat.controller.Application -> [Help 1] 
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. 
[ERROR] Re-run Maven using the -X switch to enable full debug logging. 
[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 

Answer 1

可以去除start-class

<start-class>it.athirat.controller.Application</start-class> 

只要有春天啓動Maven插件，它會找到main類自身

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