springBoot整合Eureka启动失败的解决方案

其实springBoot 整合Eureka 是比较简单 ，可是我发现很多人整合后会启动不了，我这里列出比较常见的报错的原因

报：A child container failed during start

如图下这样

这个原因是因为pom.xml 没有添加

1. <dependencyManagement>
2. <dependencies>
3. <dependency>
4. <groupId>org.springframework.cloud</groupId>
5. <artifactId>spring-cloud-dependencies</artifactId>
6. <version>Finchley.SR1</version>
7. <type>pom</type>
8. <scope>import</scope>
9. </dependency>
10. </dependencies>
11. </dependencyManagement>

假如添加后依然报错：

报错原因是因为Springboot 与 SpringCloud 版本不配对

修改后就行正常运行了！最后把他们相对应的版本贴出来，可以看着相对应的springboot版本改springCloud

Spring Boot Spring Cloud
1.2.x Angel版本
1.3.x Brixton版本
1.4.x stripes Camden版本
1.5.x Dalston版本、Edgware版本
2.0.x Finchley版本

SpringCloud异常(Euruka)

Application run failed java.lang.NoSuchMethodError: org.springframework.boot.builder.SpringApplicationBuilder

在测试Euruka作为服务注册中心的时候碰到了这个问题，错误提示如下：

1. "C:\Program Files\Java\jdk1.8.0_161\bin\java" -XX:TieredStopAtLevel=1 -........ com.fangxing.springcloud.eurukaserver.EurukaServerApplication
2. 15:04:35.690 [main] DEBUG org.springframework.boot.context.logging.ClasspathLoggingApplicationListener - Application failed to start with classpath: ....... file:/D:/Program%20Files/JetBrains/IntelliJ%20IDEA%202017.3.5/lib/idea_rt.jar]
3. 15:04:35.867 [background-preinit] DEBUG org.jboss.logging - Logging Provider: org.jboss.logging.Log4j2LoggerProvider
4. 15:04:35.869 [background-preinit] INFO org.hibernate.validator.internal.util.Version - HV000001: Hibernate Validator 6.0.7.Final
5. 15:04:35.884 [background-preinit] DEBUG org.hibernate.validator.internal.engine.resolver.TraversableResolvers - Cannot find javax.persistence.Persistence on classpath. Assuming non JPA 2 environment. All properties will per default be traversable.
6. 15:04:35.890 [background-preinit] DEBUG org.hibernate.validator.internal.xml.ValidationXmlParser - Trying to load META-INF/validation.xml for XML based Validator configuration.
7. 15:04:35.892 [background-preinit] DEBUG org.hibernate.validator.internal.xml.ResourceLoaderHelper - Trying to load META-INF/validation.xml via TCCL
8. 15:04:35.893 [background-preinit] DEBUG org.hibernate.validator.internal.xml.ResourceLoaderHelper - Trying to load META-INF/validation.xml via Hibernate Validator's class loader
9. 15:04:35.894 [background-preinit] DEBUG org.hibernate.validator.internal.xml.ValidationXmlParser - No META-INF/validation.xml found. Using annotation based configuration only.
10. 15:04:36.086 [background-preinit] DEBUG org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator - Loaded expression factory via original TCCL
11. 15:04:36.090 [background-preinit] DEBUG org.hibernate.validator.internal.engine.ValidatorFactoryImpl - HV000234: Using org.hibernate.validator.messageinterpolation.ResourceBundleMessageInterpolator as ValidatorFactory-scoped message interpolator.
12. 15:04:36.090 [background-preinit] DEBUG org.hibernate.validator.internal.engine.ValidatorFactoryImpl - HV000234: Using org.hibernate.validator.internal.engine.resolver.TraverseAllTraversableResolver as ValidatorFactory-scoped traversable resolver.
13. 15:04:36.090 [background-preinit] DEBUG org.hibernate.validator.internal.engine.ValidatorFactoryImpl - HV000234: Using org.hibernate.validator.internal.util.ExecutableParameterNameProvider as ValidatorFactory-scoped parameter name provider.
14. 15:04:36.090 [background-preinit] DEBUG org.hibernate.validator.internal.engine.ValidatorFactoryImpl - HV000234: Using org.hibernate.validator.internal.engine.DefaultClockProvider as ValidatorFactory-scoped clock provider.
15. 15:04:36.090 [background-preinit] DEBUG org.hibernate.validator.internal.engine.ValidatorFactoryImpl - HV000234: Using org.hibernate.validator.internal.engine.scripting.DefaultScriptEvaluatorFactory as ValidatorFactory-scoped script evaluator factory.
16. 15:04:36.404 [main] ERROR org.springframework.boot.SpringApplication - Application run failed
17. java.lang.NoSuchMethodError: org.springframework.boot.builder.SpringApplicationBuilder.<init>([Ljava/lang/Object;)V
18. at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:120)
19. at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:84)
20. at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:62)
21. at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
22. at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
23. at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
24. at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
25. at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:74)
26. at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)
27. at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:351)
28. at org.springframework.boot.SpringApplication.run(SpringApplication.java:317)
29. at org.springframework.boot.SpringApplication.run(SpringApplication.java:1246)
30. at org.springframework.boot.SpringApplication.run(SpringApplication.java:1234)
31. at com.fangxing.springcloud.eurukaserver.EurukaServerApplication.main(EurukaServerApplication.java:16)
32. Process finished with exit code 1

其根本原因是依赖包的版本冲突，我的这个pom.xml文件如下：

1. <?xml version="1.0" encoding="UTF-8"?>
2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3. xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
4. <modelVersion>4.0.0</modelVersion>
5. <groupId>com.fangxing.springcloud</groupId>
6. <artifactId>euruka-server</artifactId>
7. <version>0.0.1-SNAPSHOT</version>
8. <packaging>jar</packaging>
9. <name>euruka-server</name>
10. <description>Demo project for Eureka Server</description>
11. <parent>
12. <groupId>org.springframework.boot</groupId>
13. <artifactId>spring-boot-starter-parent</artifactId>
14. <version>2.0.0.RELEASE</version>
15. <relativePath/> <!-- lookup parent from repository -->
16. </parent>
17. <properties>
18. <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
19. <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
20. <java.version>1.8</java.version>
21. </properties>
22. <dependencies>
23. <dependency>
24. <groupId>org.springframework.boot</groupId>
25. <artifactId>spring-boot-starter-web</artifactId>
26. </dependency>
27. <dependency>
28. <groupId>org.springframewor k.boot</groupId>
29. <artifactId>spring-boot-starter-test</artifactId>
30. <scope>test</scope>
31. </dependency>
32. <dependency>
33. <groupId>org.springframework.cloud</groupId>
34. <artifactId>spring-cloud-starter-eureka-server</artifactId>
35. </dependency>
36. </dependencies>
37. <dependencyManagement>
38. <dependencies>
39. <dependency>
40. <groupId>org.springframework.cloud</groupId>
41. <artifactId>spring-cloud-dependencies</artifactId>
42. <version>Camden.SR3</version>
43. <type>pom</type>
44. <scope>import</scope>
45. </dependency>
46. </dependencies>
47. </dependencyManagement>
48. <build>
49. <plugins>
50. <plugin>
51. <groupId>org.springframework.boot</groupId>
52. <artifactId>spring-boot-maven-plugin</artifactId>
53. </plugin>
54. </plugins>
55. </build>
56. </project>

这里用到的SpringBoot版本为2.0.0.0版本，我们调整一下版本，改用下面的pom.xml

1. <?xml version="1.0" encoding="UTF-8"?>
2. <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3. xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
4. <modelVersion>4.0.0</modelVersion>
5. <groupId>com.fangxing.springcloud</groupId>
6. <artifactId>euruka-server</artifactId>
7. <version>0.0.1-SNAPSHOT</version>
8. <packaging>jar</packaging>
9. <name>euruka-server</name>
10. <description>Demo project for Eureka Server</description>
11. <!--基于Springboot-->
12. <parent>
13. <groupId>org.springframework.boot</groupId>
14. <artifactId>spring-boot-starter-parent</artifactId>
15. <version>1.4.0.RELEASE</version>
16. <relativePath/>
17. </parent>
18. <properties>
19. <!--设置字符编码及java版本-->
20. <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
21. <java.version>1.8</java.version>
22. </properties>
23. <dependencies>
24. <!--增加eureka-server的依赖-->
25. <dependency>
26. <groupId>org.springframework.cloud</groupId>
27. <artifactId>spring-cloud-starter-eureka-server</artifactId>
28. </dependency>
29. <!--用于测试的，本例可省略-->
30. <dependency>
31. <groupId>org.springframework.boot</groupId>
32. <artifactId>spring-boot-starter-test</artifactId>
33. <scope>test</scope>
34. </dependency>
35. </dependencies>
36. <!--依赖管理，用于管理spring-cloud的依赖，其中Camden.SR3是版本号-->
37. <dependencyManagement>
38. <dependencies>
39. <dependency>
40. <groupId>org.springframework.cloud</groupId>
41. <artifactId>spring-cloud-dependencies</artifactId>
42. <version>Camden.SR3</version>
43. <type>pom</type>
44. <scope>import</scope>
45. </dependency>
46. </dependencies>
47. </dependencyManagement>
48. <build>
49. <plugins>
50. <plugin>
51. <groupId>org.springframework.boot</groupId>
52. <artifactId>spring-boot-maven-plugin</artifactId>
53. </plugin>
54. </plugins>
55. </build>
56. </project>

启用正常。

以上为个人经验，希望能给大家一个参考，也希望大家多多支持我们。

原文链接：https://blog.csdn.net/weixin_42006112/article/details/102481050