找不到主类 Spring-Boot 应用程序

Question

我无法在 intellij 中运行我的 Spring-Boot Framework 应用程序。我正在使用 maven，由于某种原因它找不到我的主类。同样在我的 Spring 应用程序类中，我收到一个 SpringApplication.run 错误，显示无法访问 org.springframework.core.env.EnvironmentCapable。

我的 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>

<artifactId>SeleniumPoker</artifactId>
<version>1.0-SNAPSHOT</version>


<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.2.5.RELEASE</version>
</parent>

<dependencies>
    <!-- spring -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-core</artifactId>
        <version>${spring.version}</version>
        <scope>compile</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-websocket</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-messaging</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <!--Utility -->
    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.3.2</version>
    </dependency>
    <dependency>
        <groupId>com.intellij</groupId>
        <artifactId>annotations</artifactId>
        <version>9.0.4</version>
    </dependency>
    <!-- Testing -->
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
    </dependency>
    <dependency>
        <groupId>org.hamcrest</groupId>
        <artifactId>hamcrest-all</artifactId>
        <version>1.3</version>
    </dependency>
    <dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>selenium-java</artifactId>
        <version>2.47.1</version>
    </dependency>
    <dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>selenium-chrome-driver</artifactId>
        <version>2.47.1</version>
    </dependency>
    <dependency>
        <groupId>org.seleniumhq.selenium</groupId>
        <artifactId>selenium-server</artifactId>
        <version>2.47.1</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>info.cukes</groupId>
        <artifactId>cucumber-java</artifactId>
        <version>1.2.4</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>info.cukes</groupId>
        <artifactId>cucumber-junit</artifactId>
        <version>1.2.4</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>info.cukes</groupId>
        <artifactId>cucumber-spring</artifactId>
        <version>1.2.4</version>
        <scope>test</scope>
    </dependency>
    <!-- Logging -->
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
    </dependency>
    <!--  JSON -->
    <dependency>
        <groupId>org.json</groupId>
        <artifactId>json</artifactId>
        <version>20090211</version>
    </dependency>
</dependencies>


<properties>
    <java.version>1.8</java.version>
    <start-class>ca.carleton.poker.PokerApplication</start-class>
</properties>

<build>
    <resources>
        <resource>
            <directory>${basedir}/src/main/resources</directory>
        </resource>
        <resource>
            <directory>${basedir}/src/main/java</directory>
        </resource>
    </resources>

    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-compiler-plugin</artifactId>
            <configuration>
                <source>1.8</source>
                <target>1.8</target>
            </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-assembly-plugin</artifactId>
            <configuration>
                <descriptorRefs>
                    <descriptorRef>jar-with-dependencies</descriptorRef>
                    <descriptorRef>code</descriptorRef>
                </descriptorRefs>
                <finalName>${pom.artifactId}</finalName>
                <appendAssemblyId>false</appendAssemblyId>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-source-plugin</artifactId>
            <executions>
                <execution>
                    <id>attach-sources</id>
                    <goals>
                        <goal>jar</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <configuration>
                <testFailureIgnore>true</testFailureIgnore>
                <skipTests>true</skipTests>
            </configuration>
        </plugin>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

<groupId>SeleniumPoker</groupId>

这是我的 StarterClass：

package ca.carleton.poker;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.socket.config.annotation.EnableWebSocket;
import org.springframework.web.socket.config.annotation.WebSocketConfigurer;
import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistry;

import ca.carleton.poker.game.PokerSocketHandler;

/**
 * Main class - launch the application and register endpoint handlers.
 *
 * 
  */
@SuppressWarnings("SpringFacetCodeInspection")
@Configuration
@EnableAutoConfiguration
@EnableWebSocket
@ComponentScan(basePackages = "ca.carleton.poker")
public class PokerApplication extends SpringBootServletInitializer 
implements WebSocketConfigurer {

@Autowired
private PokerSocketHandler PokerSocketHandler;

public static void main(final String[] args) {
    SpringApplication.run(PokerApplication.class, args);
}

@Override
public void registerWebSocketHandlers(final WebSocketHandlerRegistry 
webSocketHandlerRegistry) {
    webSocketHandlerRegistry.addHandler(this.PokerSocketHandler, "/game")
            .withSockJS();
}

@Override
protected SpringApplicationBuilder configure(final SpringApplicationBuilder springApplicationBuilder) {
    return springApplicationBuilder.sources(PokerApplication.class);
}

}

Answer 1

看起来版本与 spring 核心库和 springboot 版本不匹配，尝试兼容版本，如果仍然发现问题，请完全删除 .m2 文件夹并再次运行查看，祝你好运。