那些遇到过的问题

java.lang.ClassCastException：ConditionalOnJava $ JavaVersion无法转换为org.springframework.boot.system.JavaVersion

R D*_*val 5 java maven spring-tool-suite spring-boot

我的项目在另一台PC上运行良好。但是我使用导入现有的maven项目将其导入到另一台PC中。

在新的PC设置中，我有以下设置： 

Project -> properties -> java compiler version -> set to 1.8

Project -> project facets -> java version ->  set to 1.8
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表明 JRE System Library [javaSE-1.8]

pom.xml具有<java-version>1.8</java-version> 以下maven插件：

<plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.6.1</version>
          <configuration>
            <source>1.8</source>
            <target>1.8</target>
          </configuration>
        </plugin>
    </plugins>
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使用上面的设置（如果我运行），clean install则控制台错误如下：

2018-05-18 10:07:56.255  INFO 5644 --- [           main] com.dvl.AssetTrackerApplication          : Starting AssetTrackerApplication on DESKTOP-M0588P2 with PID 5644 (started by Dhaval in E:\STS Workspace\AssetTracker)
2018-05-18 10:07:56.255  INFO 5644 --- [           main] com.dvl.AssetTrackerApplication          : No active profile set, falling back to default profiles: default
2018-05-18 10:07:56.317  INFO 5644 --- [           main] ConfigServletWebServerApplicationContext : Refreshing org.springframework.boot.web.servlet.context.AnnotationConfigServletWebServerApplicationContext@2cc44ad: startup date [Fri May 18 10:07:56 IST 2018]; root of context hierarchy
2018-05-18 10:07:57.380  WARN 5644 --- [           main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [com.dvl.AssetTrackerApplication]; nested exception is java.lang.IllegalStateException: Error processing condition on org.springframework.boot.actuate.autoconfigure.MetricRepositoryAutoConfiguration$LegacyMetricRepositoryConfiguration
2018-05-18 10:07:57.396  INFO 5644 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2018-05-18 10:07:57.396  INFO 5644 --- [           main] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2018-05-18 10:07:57.412 ERROR 5644 --- [           main] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [com.dvl.AssetTrackerApplication]; nested exception is java.lang.IllegalStateException: Error processing condition on org.springframework.boot.actuate.autoconfigure.MetricRepositoryAutoConfiguration$LegacyMetricRepositoryConfiguration
    at org.springframework.context.annotation.ConfigurationClassParser.processImports(ConfigurationClassParser.java:645) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.lambda$processDeferredImportSelectors$2(ConfigurationClassParser.java:564) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1378) ~[na:na]
    at org.springframework.context.annotation.ConfigurationClassParser.processDeferredImportSelectors(ConfigurationClassParser.java:560) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:188) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:316) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:233) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:273) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:93) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:694) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
    at com.dvl.AssetTrackerApplication.main(AssetTrackerApplication.java:27) [classes/:na]
Caused by: java.lang.IllegalStateException: Error processing condition on org.springframework.boot.actuate.autoconfigure.MetricRepositoryAutoConfiguration$LegacyMetricRepositoryConfiguration
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:64) ~[spring-boot-autoconfigure-2.0.1.RELEASE.jar:2.0.1.RELEASE]
    at org.springframework.context.annotation.ConditionEvaluator.shouldSkip(ConditionEvaluator.java:108) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:221) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.processMemberClasses(ConfigurationClassParser.java:359) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:265) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:245) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    at org.springframework.context.annotation.ConfigurationClassParser.processImports(ConfigurationClassParser.java:635) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
    ... 17 common frames omitted
Caused by: java.lang.ClassCastException: org.springframework.boot.autoconfigure.condition.ConditionalOnJava$JavaVersion cannot be cast to org.springframework.boot.system.JavaVersion
    at org.springframework.boot.autoconfigure.condition.OnJavaCondition.getMatchOutcome(OnJavaCondition.java:48) ~[spring-boot-autoconfigure-2.0.1.RELEASE.jar:2.0.1.RELEASE]
    at org.springframework.boot.autoconfigure.condition.SpringBootCondition.matches(SpringBootCondition.java:47) ~[spring-boot-autoconfigure-2.0.1.RELEASE.jar:2.0.1.RELEASE]
    ... 23 common frames omitted
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然后我尝试spring-boot-maven-plugin按照一些SO答案中的建议使用 ：

<plugin>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
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我删除/评论了这个 maven-compiler-plugin

JRE System Library [javaSE-1.6]即使我有以下情况，它也会自动从1.8 更改为1.6：

Project -> properties -> java compiler version -> set to 1.8
Project -> project facets -> java version ->  set to 1.8 
pom.xml has <java-version>1.8</java-version>
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并Java compiler level does not match the version of the installed在“问题”窗口中给出以下错误：

所以我尝试在所有1.6 解决版本不匹配问题的地方更改版本，但是当我运行时，clean install再次在控制台中提供了相同的（上面的）stacktrace。

编辑：的 输出mvn dependency:tree：

[INFO] com.dvl:assetTracker:jar:1.0
[INFO] +- org.springframework:spring-webmvc:jar:4.2.0.RELEASE:compile
[INFO] |  +- org.springframework:spring-beans:jar:4.3.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-context:jar:4.3.4.RELEASE:compile
[INFO] |  |  \- org.springframework:spring-aop:jar:4.3.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-core:jar:4.3.4.RELEASE:compile
[INFO] |  +- org.springframework:spring-expression:jar:4.3.4.RELEASE:compile
[INFO] |  \- org.springframework:spring-web:jar:4.3.4.RELEASE:compile
[INFO] +- org.springframework.boot:spring-boot-starter-actuator:jar:1.4.2.RELEASE:compile
[INFO] |  \- org.springframework.boot:spring-boot-actuator:jar:1.4.2.RELEASE:compile
[INFO] +- org.springframework.boot:spring-boot-starter-web:jar:1.4.2.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot-starter-tomcat:jar:1.4.2.RELEASE:compile
[INFO] |  |  \- org.apache.tomcat.embed:tomcat-embed-websocket:jar:8.5.6:compile
[INFO] |  \- com.fasterxml.jackson.core:jackson-databind:jar:2.8.4:compile
[INFO] |     +- com.fasterxml.jackson.core:jackson-annotations:jar:2.8.4:compile
[INFO] |     \- com.fasterxml.jackson.core:jackson-core:jar:2.8.4:compile
[INFO] +- org.postgresql:postgresql:jar:9.4.1212.jre7:runtime
[INFO] +- org.springframework.boot:spring-boot-starter-test:jar:1.4.2.RELEASE:test
[INFO] |  +- org.springframework.boot:spring-boot-test:jar:1.4.2.RELEASE:test
[INFO] |  +- org.springframework.boot:spring-boot-test-autoconfigure:jar:1.4.2.RELEASE:test
[INFO] |  +- com.jayway.jsonpath:json-path:jar:2.2.0:test
[INFO] |  |  +- net.minidev:json-smart:jar:2.2.1:test
[INFO] |  |  |  \- net.minidev:accessors-smart:jar:1.1:test
[INFO] |  |  |     \- org.ow2.asm:asm:jar:5.0.3:test
[INFO] |  |  \- org.slf4j:slf4j-api:jar:1.7.21:compile
[INFO] |  +- junit:junit:jar:4.12:test
[INFO] |  +- org.assertj:assertj-core:jar:2.5.0:test
[INFO] |  +- org.mockito:mockito-core:jar:1.10.19:test
[INFO] |  |  \- org.objenesis:objenesis:jar:2.1:test
[INFO] |  +- org.hamcrest:hamcrest-core:jar:1.3:test
[INFO] |  +- org.hamcrest:hamcrest-library:jar:1.3:test
[INFO] |  +- org.skyscreamer:jsonassert:jar:1.3.0:test
[INFO] |  |  \- org.json:json:jar:20140107:test
[INFO] |  \- org.springframework:spring-test:jar:4.3.4.RELEASE:test
[INFO] +- org.springframework:spring-orm:jar:4.3.4.RELEASE:compile
[INFO] |  \- org.springframework:spring-jdbc:jar:4.3.4.RELEASE:compile
[INFO] +- org.springframework:spring-tx:jar:4.3.4.RELEASE:compile
[INFO] +- javax.servlet:jstl:jar:1.2:compile
[INFO] +- org.apache.tomcat.embed:tomcat-embed-jasper:jar:8.5.6:compile
[INFO] |  +- org.apache.tomcat.embed:tomcat-embed-core:jar:8.5.6:compile
[INFO] |  +- org.apache.tomcat.embed:tomcat-embed-el:jar:8.5.6:compile
[INFO] |  \- org.eclipse.jdt.core.compiler:ecj:jar:4.5.1:compile
[INFO] +- jboss:javassist:jar:3.4.ga:compile
[INFO] +- c3p0:c3p0:jar:0.9.1:compile
[INFO] +- commons-logging:commons-logging:jar:1.1.1:compile
[INFO] +- com.itextpdf:itextpdf:jar:5.0.6:compile
[INFO] |  +- org.bouncycastle:bcmail-jdk14:jar:1.38:compile
[INFO] |  +- org.bouncycastle:bcprov-jdk14:jar:1.38:compile
[INFO] |  \- org.bouncycastle:bctsp-jdk14:jar:1.38:compile
[INFO] +- org.apache.poi:poi:jar:3.14:compile
[INFO] |  \- commons-codec:commons-codec:jar:1.10:compile
[INFO] +- org.apache.poi:poi-ooxml:jar:3.14:compile
[INFO] |  +- org.apache.poi:poi-ooxml-schemas:jar:3.14:compile
[INFO] |  |  \- org.apache.xmlbeans:xmlbeans:jar:2.6.0:compile
[INFO] |  |     \- stax:stax-api:jar:1.0.1:compile
[INFO] |  \- com.github.virtuald:curvesapi:jar:1.03:compile
[INFO] +- org.hibernate:hibernate-core:jar:5.0.11.Final:compile
[INFO] |  +- org.jboss.logging:jboss-logging:jar:3.3.0.Final:compile
[INFO] |  +- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
[INFO] |  +- org.javassist:javassist:jar:3.20.0-GA:compile
[INFO] |  +- antlr:antlr:jar:2.7.7:compile
[INFO] |  +- org.apache.geronimo.specs:geronimo-jta_1.1_spec:jar:1.1.1:compile
[INFO] |  +- org.jboss:jandex:jar:2.0.0.Final:compile
[INFO] |  +- dom4j:dom4j:jar:1.6.1:compile
[INFO] |  |  \- xml-apis:xml-apis:jar:1.4.01:compile
[INFO] |  \- org.hibernate.common:hibernate-commons-annotations:jar:5.0.1.Final:compile
[INFO] +- org.hibernate:hibernate-ehcache:jar:5.0.11.Final:compile
[INFO] |  \- net.sf.ehcache:ehcache-core:jar:2.4.3:compile
[INFO] +- org.hibernate:hibernate-entitymanager:jar:5.0.11.Final:compile
[INFO] +- org.hibernate:hibernate-envers:jar:5.0.11.Final:compile
[INFO] +- org.hibernate:hibernate-java8:jar:5.0.11.Final:compile
[INFO] +- org.hibernate:hibernate-jpamodelgen:jar:5.0.11.Final:compile
[INFO] +- org.hibernate:hibernate-validator:jar:5.2.4.Final:compile
[INFO] |  +- javax.validation:validation-api:jar:1.1.0.Final:compile
[INFO] |  \- com.fasterxml:classmate:jar:1.3.3:compile
[INFO] +- org.hibernate:hibernate-validator-annotation-processor:jar:5.2.4.Final:compile
[INFO] +- commons-lang:commons-lang:jar:2.6:compile
[INFO] +- org.springframework.boot:spring-boot-starter:jar:1.4.2.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot:jar:1.4.2.RELEASE:compile
[INFO] |  +- org.springframework.boot:spring-boot-autoconfigure:jar:1.4.2.RELEASE:compile
[INFO] |  \- org.yaml:snakeyaml:jar:1.17:runtime
[INFO] +- org.apache.logging.log4j:log4j-api:jar:2.6.2:compile
[INFO] +- org.apache.logging.log4j:log4j-core:jar:2.6.2:compile
[INFO] \- org.apache.logging.log4j:log4j-jcl:jar:2.5:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:20 min
[INFO] Finished at: 2018-05-18T11:36:54+05:30
[INFO] Final Memory: 21M/66M
[INFO] ------------------------------------------------------------------------
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欢迎所有评论。谢谢。

SWi*_*els 2

springboot 升级后我遇到了同样的错误。包含用于java反向兼容的spring-boot-actuator-autoconfigure类。conditionalOnJava不知何故，在升级后，这个版本类转换在我的例子中失败了。clean build就我而言，在/之后它没有刷新clean install所以我删除了 gradle/maven 缓存。

等级用户：

  • 删除~/.gradle的内容
  • gradle 干净构建

Eclipse 用户的附加信息：

  • 在 eclipse 中刷新 gradle 项目（如果您使用 buildship 插件）
  • 通过删除遗留依赖项来清理 java 构建路径（项目 -> 属性 -> java 构建路径 -> 库）

行家用户：

  • 删除~/.m2的内容
  • 全新安装

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