Spring Cloud Eureka：适用于 maven 和 IDE，但不能用作 uber-jar

Question

我有一个示例 Eureka 服务器项目，当运行在 IntelliJ 中或 "mvn spring-boot:run" 时，它工作正常。但是，当运行直接使用 "java -jar eureka-server-1.0-SNAPSHOT.jar" 连接 uber jar 时，我得到以下堆栈跟踪：

2015-11-04 19:48:56.985 ERROR 138300 --- [           main] o.s.boot.SpringApplication               : Application startup failed

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [org.springframework.cloud.netflix.eureka.server.EurekaServerConfiguration]; nested exception is java.lang.IllegalStateException: Annotation @EnableDiscoveryClient found, but there are no implementations.  Did you forget to include a starter?
        at org.springframework.context.annotation.ConfigurationClassParser.processDeferredImportSelectors(ConfigurationClassParser.java:437)
        at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:183)
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:306)
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:239)
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:254)
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:94)
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:606)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:462)
        at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:320)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:957)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:946)
        at com.my.example.EurekaApplication.main(EurekaApplication.java:20)
Caused by: java.lang.IllegalStateException: Annotation @EnableDiscoveryClient found, but there are no implementations.  Did you forget to include a starter?
        at org.springframework.cloud.util.SpringFactoryImportSelector.selectImports(SpringFactoryImportSelector.java:75)
        at org.springframework.context.annotation.ConfigurationClassParser.processDeferredImportSelectors(ConfigurationClassParser.java:429)
        ... 13 common frames omitted

这是 POM 文件：

<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.my.example</groupId>
  <artifactId>eureka-server</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>eureka-server</name>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
    <start-class>com.my.example.EurekaApplication</start-class>
  </properties>

  <dependencies>
    <dependency>
      <groupId>org.springframework.cloud</groupId>
      <artifactId>spring-cloud-starter-eureka-server</artifactId>
      <version>1.0.3.RELEASE</version>
      <exclusions>
        <exclusion>
          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-servlet</artifactId>
        </exclusion>
        <exclusion>
          <groupId>com.sun.jersey</groupId>
          <artifactId>jersey-server</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
    <!-- spring-cloud-starter-eureka-server 1.0.3 pulls conflicting jersey versions,
    so we add 1.11 below and remove 1.13 in exclusions above -->
    <dependency>
      <groupId>com.sun.jersey</groupId>
      <artifactId>jersey-servlet</artifactId>
      <version>1.11</version>
    </dependency>
    <dependency>
      <groupId>com.sun.jersey</groupId>
      <artifactId>jersey-server</artifactId>
      <version>1.11</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <version>1.2.4.RELEASE</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.3</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-shade-plugin</artifactId>
        <version>2.3</version>
        <executions>
          <execution>
            <phase>package</phase>
            <goals>
              <goal>shade</goal>
            </goals>
            <configuration>
              <transformers>
                <transformer
                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                  <mainClass>${start-class}</mainClass>
                </transformer>
              </transformers>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
        <version>1.2.4.RELEASE</version>
        <configuration>
          <mainClass>${start-class}</mainClass>
          <addResources>true</addResources>
        </configuration>
      </plugin>
    </plugins>
  </build>


</project>

所以我确实有一个 spring-cloud-starter-eureka-server 启动器依赖项，而且我在项目的任何地方都没有 @EnableDiscoveryClient 注释。

这里是整个项目中唯一的.java文件：

@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication
{    
    public static void main(String[] args) {
        SpringApplication.run(EurekaApplication.class, args);;
    }
}

这是 application.properties 文件：

server.port=8761
eureka.client.registerWithEureka: false
eureka.client.fetchRegistry: false
eureka.server.waitTimeInMsWhenSyncEmpty: 0

提前致谢！

Answer 1

尤里卡 无法使用 您指定的球衣版本（对我来说不适用）。

使用http://start.spring.io生成起始项目。

这个 pom.xml 确实有效。

<?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.my.example</groupId>
    <artifactId>eureka-server</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>eureka-server</name>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.7.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
        </dependency>

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

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-parent</artifactId>
                <version>Angel.SR3</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

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

</project>

Spring Cloud Eureka：适用于 maven 和 IDE，但不能用作 uber-jar

Spring Cloud Eureka: Works with maven and in IDE, but not as uber-jar

spring-boot

spring-cloud