Question

我正在学习springboot和微服务。我已经创建了3个服务，并且一切正常。现在，我通过添加“ Eureka Server”作为依赖项，使用start.spring.io创建了发现服务器。

我的pom.xml如下：

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>io.springboot.microserices</groupId>
    <artifactId>discovery-server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>discovery-server</name>
    <description>Demo project for Spring Boot</description>
<properties>
    <java.version>1.8</java.version>
    <spring-cloud.version>Finchley.SR1</spring-cloud.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-netflix-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-dependencies</artifactId>
            <version>${spring-cloud.version}</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>

我的主要课程如下：

    package io.springboot.microserices.discoveryserver;
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
    @SpringBootApplication
    @EnableEurekaServer

public class DiscoveryServerApplication {

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

}

但是我无法运行该应用程序。如果我跑步，我将获得例外。有人可以帮我解决这个问题。

16:07:02.761 [main] ERROR org.springframework.boot.SpringApplication - Application startup failed
java.lang.NoSuchMethodError: org.springframework.boot.builder.SpringApplicationBuilder.<init>([Ljava/lang/Class;)V
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:170)
    at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:104)

Answer 1

Finchley与Spring Boot 1.x不兼容，您必须使用Boot2.0.x。对于Boot 2.1.x，您需要使用Greenwich。

Answer 2

这是版本不匹配的问题。它与Eureka Spring Boot Code没有任何关系。解决以上问题。下面是我的工作代码。相同。

示例pom.xml代码

       <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>1.4.1.RELEASE</version>
            <relativePath /> <!-- lookup parent from repository -->
        </parent>

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

         <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Camden.SR6</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>

java.lang.NoSuchMethodError：org.springframework.boot.builder.SpringApplicationBuilder

2 个答案: