springboot2.0 引入spring-boot-starter-web 报错-慕课网

springboot2.0 引入spring-boot-starter-web 报错

来源：2-1 构建Spring Boot 第一个demo

慕丝8165725

2018-03-23 17:07

报下面的错，哪位大神能解答一下么？

Failed to read artifact descriptor for com.fasterxml.jackson.core:jackson-databind:jar:2.9.4

org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for com.fasterxml.jackson.core:jackson-databind:jar:2.9.4
   at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:282)
   at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:198)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCachedArtifactDescriptor(DefaultDependencyCollector.java:535)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifactDescriptorResult(DefaultDependencyCollector.java:519)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:409)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:363)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:351)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.doRecurse(DefaultDependencyCollector.java:504)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:458)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:363)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:351)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.doRecurse(DefaultDependencyCollector.java:504)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:458)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:363)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:351)
   at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:254)
   at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:316)
   at org.apache.maven.project.DefaultProjectDependenciesResolver.resolve(DefaultProjectDependenciesResolver.java:172)
   at org.apache.maven.project.DefaultProjectBuilder.resolveDependencies(DefaultProjectBuilder.java:215)
   at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:188)
   at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:119)
   at org.eclipse.m2e.core.internal.embedder.MavenImpl.readMavenProject(MavenImpl.java:636)
   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:530)
   at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager$3.call(ProjectRegistryManager.java:492)
   at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager$3.call(ProjectRegistryManager.java:1)
   at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:177)
   at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)
   at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:496)
   at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:351)
   at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:298)
   at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.getProjectFacade(MavenBuilder.java:154)
   at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod$1.call(MavenBuilder.java:89)
   at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.executeBare(MavenExecutionContext.java:177)
   at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:151)
   at org.eclipse.m2e.core.internal.embedder.MavenExecutionContext.execute(MavenExecutionContext.java:99)
   at org.eclipse.m2e.core.internal.builder.MavenBuilder$BuildMethod.execute(MavenBuilder.java:86)
   at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:200)
   at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:735)
   at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
   at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
   at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
   at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:301)
   at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
   at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:304)
   at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:360)
   at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:383)
   at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:142)
   at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:232)
   at org.eclipse.core.internal.jobs.Worker.run(Worker.java:56)
Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Failure to transfer com.fasterxml.jackson.core:jackson-databind:pom:2.9.4 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 com.fasterxml.jackson.core:jackson-databind:pom:2.9.4 from/to central (https://repo.maven.apache.org/maven2): connect timed out
   at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:444)
   at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:246)
   at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:223)
   at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:267)
   ... 49 more
Caused by: org.eclipse.aether.transfer.ArtifactTransferException: Failure to transfer com.fasterxml.jackson.core:jackson-databind:pom:2.9.4 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 com.fasterxml.jackson.core:jackson-databind:pom:2.9.4 from/to central (https://repo.maven.apache.org/maven2): connect timed out
   at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:238)
   at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:206)
   at org.eclipse.aether.internal.impl.DefaultArtifactResolver.gatherDownloads(DefaultArtifactResolver.java:585)
   at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:503)
   at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:421)
   ... 52 more

写回答关注

4回答

慕丝5210373

2018-03-23 17:38:38

已采纳

maven仓库里面没有找到你引入的jar包，你打开你的maven仓库看看

0 0

qq_特岚苏_03294448: 2018-08-02 10:23:14

在

spring-boot-starter-web依赖中就好了：

实例：
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <exclusions>
        <!--排除jackson-->
        <exclusion>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
        </exclusion>
    </exclusions>
</dependency>

1 0

慕用3024...

感谢，我按您的方法加了对jackson的排除，还想请问您一下这样做的原理是什么呀

2019-12-18 14:23:21

共 1 条回复 >

罗小黑003

2018-04-09 17:26:51

您好，我还未解决，你是如何强制刷新的

0 0
慕丝8165725

2018-03-23 18:03:05

我是在pom里添加了这个，所有应该直接下载到项目里的。发现有那个jar，但是项目没有刷新过来

但是我解决了我的那个问题，项目强制刷新一下后，就解决了。

0 0

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