导入不了项目

能帮忙解答下吗

weixin_慕瓜9083905 2020-04-05

源自：项目：校园商铺——框架大换血 2-2 SpringBoot的搭建与启动

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10回答

好帮手慕柯南 2020-04-07 18:24:51

同学你的jar包引入错了，应该是junit下的包

祝学习愉快~

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提问者 weixin_慕瓜9083905 #1

主要是我依赖引的也是1.5.8但是看maven依赖里是黑的也用不了已经发在刚才的截图

2020-04-07 18:30:14
好帮手慕柯南回复提问者 weixin_慕瓜9083905 #2

请问，你将junit引入的包改了之后还报错吗？看你的截图中springboot的内容并没有报错。如果改了之后还报错，你可以按之前的方法更新一下maven，试试。祝学习愉快~

2020-04-07 19:20:28
提问者 weixin_慕瓜9083905 回复好帮手慕柯南 #3

在maven里删除lastUpdate文件后重新下载项目还是不行报错 *************************** APPLICATION FAILED TO START *************************** Description: Cannot determine embedded database driver class for database type NONE Action: If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).

2020-04-07 19:30:27

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提问者 weixin_慕瓜9083905 2020-04-07 17:38:57

依赖是黑的

还有src/test/java报错

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好帮手慕柯南 2020-04-07 17:25:25

同学你好！

你的错误原因：

springboot在启动时会自动加载数据库的配置信息，但是你的项目中应该是没有配置的，所以报错了。

老师的没有报错时因为老师使用springboot版本比较低。你的版本较高导致的。

建议你使用和老师一样的版本，避免在后期学习时由于版本问题导致错误

祝学习愉快~

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提问者 weixin_慕瓜9083905 2020-04-07 16:56:55

现在控制台报错

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.

2020-04-07 16:55:22.354 ERROR 38760 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :

***************************

APPLICATION FAILED TO START

***************************

Description:

Cannot determine embedded database driver class for database type NONE

Action:

If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).

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提问者 weixin_慕瓜9083905 2020-04-07 15:32:15

控制台输入：

. ____ _ __ _ _

/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \

( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \

\\/ ___)| |_)| | | | | || (_| | ) ) ) )

' |____| .__|_| |_|_| |_\__, | / / / /

=========|_|==============|___/=/_/_/_/

:: Spring Boot :: (v2.2.6.RELEASE)

2020-04-07 15:27:15.920 INFO 62784 --- [ main] com.imooc.o2o.O2oApplication : Starting O2oApplication on SC-201703152226 with PID 62784 (E:\o2o1\target\classes started by Administrator in E:\o2o1)

2020-04-07 15:27:15.988 INFO 62784 --- [ main] com.imooc.o2o.O2oApplication : No active profile set, falling back to default profiles: default

2020-04-07 15:27:18.826 WARN 62784 --- [ main] o.m.s.mapper.ClassPathMapperScanner : No MyBatis mapper was found in '[com.imooc.o2o]' package. Please check your configuration.

2020-04-07 15:27:20.711 INFO 62784 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)

2020-04-07 15:27:20.812 INFO 62784 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]

2020-04-07 15:27:20.813 INFO 62784 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.33]

2020-04-07 15:27:21.023 INFO 62784 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext

2020-04-07 15:27:21.023 INFO 62784 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 4448 ms

2020-04-07 15:27:21.556 INFO 62784 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'

2020-04-07 15:27:21.913 WARN 62784 --- [ main] ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.zaxxer.hikari.HikariDataSource]: Factory method 'dataSource' threw exception; nested exception is org.springframework.boot.autoconfigure.jdbc.DataSourceProperties$DataSourceBeanCreationException: Failed to determine a suitable driver class

2020-04-07 15:27:21.913 INFO 62784 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Shutting down ExecutorService 'applicationTaskExecutor'

2020-04-07 15:27:21.919 INFO 62784 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]

2020-04-07 15:27:21.961 INFO 62784 --- [ main] ConditionEvaluationReportLoggingListener :

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.

2020-04-07 15:27:21.965 ERROR 62784 --- [ main] o.s.b.d.LoggingFailureAnalysisReporter :

***************************

APPLICATION FAILED TO START

***************************

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

Action:

Consider the following:

If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.

If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

打开不了localhost:8080/hello

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好帮手慕柯南 2020-04-07 13:44:14

同学你好！

参考之前的方式在maven仓库中，将以下路径中的“xxx.lastUpdated”文件全都删掉。刷新一下项目测试一下。

另外这个jar应该并没有用到，你可以试一下是否影响项目的运行。

祝学习愉快~

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提问者 weixin_慕瓜9083905 2020-04-07 10:13:44

Failure to transfer org.junit.jupiter:junit-jupiter-engine:jar:5.5.2 from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.junit.jupiter:junit-jupiter-engine:jar:5.5.2 from/to central (https://repo.maven.apache.org/maven2): GET request of: org/junit/jupiter/junit-jupiter-engine/5.5.2/junit-jupiter-engine-5.5.2.jar from central failed

org.eclipse.aether.transfer.ArtifactTransferException: Failure to transfer org.junit.jupiter:junit-jupiter-engine:jar:5.5.2 from https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced. Original error: Could not transfer artifact org.junit.jupiter:junit-jupiter-engine:jar:5.5.2 from/to central (https://repo.maven.apache.org/maven2): GET request of: org/junit/jupiter/junit-jupiter-engine/5.5.2/junit-jupiter-engine-5.5.2.jar from central failed

at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:226)

at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:192)

at org.eclipse.aether.internal.impl.DefaultArtifactResolver.gatherDownloads(DefaultArtifactResolver.java:564)

at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:482)

at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:400)

at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:225)

at org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies(DefaultRepositorySystem.java:335)

at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:202)

at org.apache.maven.project.DefaultProjectBuilder.resolveDependencies(DefaultProjectBuilder.java:225)

at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:198)

at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:122)

at org.eclipse.m2e.core.internal.embedder.MavenImpl.readMavenProject(MavenImpl.java:630)

at org.eclipse.m2e.core.internal.project.registry.DefaultMavenDependencyResolver.resolveProjectDependencies(DefaultMavenDependencyResolver.java:63)

at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refreshPhase2(ProjectRegistryManager.java:551)

at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.lambda$2(ProjectRegistryManager.java:515)

at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:177)

at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)

at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:513)

at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:365)

at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:312)

at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration0(ProjectConfigurationManager.java:405)

at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager$2.call(ProjectConfigurationManager.java:352)

at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager$2.call(ProjectConfigurationManager.java:1)

at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:177)

at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)

at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99)

at org.eclipse.m2e.core.internal.embedder.MavenImpl.execute(MavenImpl.java:1370)

at org.eclipse.m2e.core.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:349)

at org.eclipse.m2e.core.ui.internal.UpdateMavenProjectJob.runInWorkspace

还有这个报错

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好帮手慕柯南 2020-04-07 10:00:27

同学你好！

你这个jar还是没有下载下来，可能是由于maven本地仓库的缓存导致始终无法下载，建议你：

将这里设置的maven镜像删除，删除后会默认使用maven配置的setting文件中的maven镜像
Eclipse→Window→Preferences，查看自己本地仓库的地址，如图：
.打开maven仓库目录，进入org\apache\maven目录，形如：
D:\CatMessage\maven\repository\org\apache\maven（注意这里应该是你自己的地址）
然后搜索关键字：“lastUpdated”，
将搜索到的“xxx.lastUpdated”文件全都删掉
选中maven项目，右键--》maven--》update让maven重新下载依赖包，注意要保持网络畅通