Eclipse中Maven工程缺少Maven Dependencies 10C

图片说明

如图,缺少maven的jar包
导致全部报错
而且我发现这个应该是我频繁的从GIT上拉代码,然后删掉本地,再拉
之后出的这个错误,看了网上的解决方案都没用

2个回答

可以看看这里http://fanli7.net/a/bianchengyuyan/C__/20150225/538504.html
要修改下.classpath文件

Evankaka
Evankaka 回复qq597332855: 一样的,你选择包的展示方法就可 以了
4 年多之前 回复
qq597332855
qq597332855 我发现我java文件里面pakge都是com开头的,但是这里的包都是main.java开头的,我其他工程source文件名都是src/main/java
4 年多之前 回复
qq597332855
qq597332855 解决了这个问题,但是我想问一下这个问题是什么原因引起的呢?
4 年多之前 回复

Eclipse在引入Maven工程后,找不到Maven Dependencies。使得代码报错,具体如下图所示:

     

而正常Maven的工程如下所示:

   

产生这种现象的原因可能是工程对应的开发环境改变,本地Maven仓库地址和原来的不一致。其根本原因是Maven project的Maven选项未开启或启动无效。

   

......
答案就在这里:Eclipse中Maven工程缺少Maven Dependencies
----------------------Hi,地球人,我是问答机器人小S,上面的内容就是我狂拽酷炫叼炸天的答案,除了赞同,你还有别的选择吗?

qq597332855
qq597332855 不好意思,这个我已经试过了,没用。我右键maven没有那个选项
4 年多之前 回复
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commons-cli:commons-cli:jar:1.2 at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:106) at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208) ... 20 more Caused by: org.apache.maven.plugin.PluginResolutionException: Plugin org.apache.maven.plugins:maven-compiler-plugin:3.5 or one of its dependencies could not be resolved: Failed to collect dependencies at org.apache.maven.plugins:maven-compiler-plugin:jar:3.5 -> org.apache.maven:maven-toolchain:jar:2.2.1 -> org.apache.maven:maven-core:jar:2.2.1 -> commons-cli:commons-cli:jar:1.2 at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolveInternal(DefaultPluginDependenciesResolver.java:214) at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:149) at org.apache.maven.plugin.internal.DefaultMavenPluginManager.createPluginRealm(DefaultMavenPluginManager.java:402) at org.apache.maven.plugin.internal.DefaultMavenPluginManager.setupPluginRealm(DefaultMavenPluginManager.java:374) at org.apache.maven.plugin.DefaultBuildPluginManager.getPluginRealm(DefaultBuildPluginManager.java:231) at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:102) ... 21 more Caused by: org.eclipse.aether.collection.DependencyCollectionException: Failed to collect dependencies at org.apache.maven.plugins:maven-compiler-plugin:jar:3.5 -> org.apache.maven:maven-toolchain:jar:2.2.1 -> org.apache.maven:maven-core:jar:2.2.1 -> commons-cli:commons-cli:jar:1.2 at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:300) at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:325) at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolveInternal(DefaultPluginDependenciesResolver.java:202) ... 26 more Caused by: org.eclipse.aether.resolution.ArtifactDescriptorException: Failed to read artifact descriptor for commons-cli:commons-cli:jar:1.2 at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:330) at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:199) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.resolveCachedArtifactDescriptor(DefaultDependencyCollector.java:544) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.getArtifactDescriptorResult(DefaultDependencyCollector.java:528) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:418) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:372) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:360) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.doRecurse(DefaultDependencyCollector.java:513) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:467) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:372) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:360) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.doRecurse(DefaultDependencyCollector.java:513) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:467) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.processDependency(DefaultDependencyCollector.java:372) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:360) at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:263) ... 28 more Caused by: org.apache.maven.model.resolution.UnresolvableModelException: Failure to find org.apache:apache:pom:4 in http://localhost:8081/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of public has elapsed or updates are forced at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:178) at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:224) at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally(DefaultModelBuilder.java:1051) at org.apache.maven.model.building.DefaultModelBuilder.readParent(DefaultModelBuilder.java:829) at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:331) at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:321) ... 43 more Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Failure to find org.apache:apache:pom:4 in http://localhost:8081/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of public has elapsed or updates are forced at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:453) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:255) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:232) at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:174) ... 48 more Caused by: org.eclipse.aether.transfer.ArtifactNotFoundException: Failure to find org.apache:apache:pom:4 in http://localhost:8081/nexus/content/groups/public/ was cached in the local repository, resolution will not be reattempted until the update interval of public has elapsed or updates are forced at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:240) at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:215) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.gatherDownloads(DefaultArtifactResolver.java:594) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:512) at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:430) ... 51 more [ERROR] [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
myeclipse 创建maven项目问题
myeclipse 2019 创建maven项目之后在项目中不出现Maven Dependencies目录。但是在Java Build Path中显示。最大的问题是引入依赖了之后没有添加到项目中,而且也没有下载相关依赖。请问各位大神这是什么原因。 ![图片说明](https://img-ask.csdn.net/upload/201912/14/1576335779_950379.png) ![图片说明](https://img-ask.csdn.net/upload/201912/14/1576335889_423197.png) ![图片说明](https://img-ask.csdn.net/upload/201912/14/1576336080_243124.png) ![图片说明](https://img-ask.csdn.net/upload/201912/14/1576336149_214539.png) 依赖添加了根本就没有用 ![图片说明](https://img-ask.csdn.net/upload/201912/14/1576336330_490391.png) ![图片说明](https://img-ask.csdn.net/upload/201912/14/1576336389_884864.png) 跪求各位大神帮忙
maven在eclipse中执行install命令控制台输出(如下)是什么情况:
在eclipse中执行install命令控制台输出(如下)是什么情况: [INFO] Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-install-plugin/2.4/maven-install-plugin-2.4.pom [INFO] BUILD FAILURE [INFO] Total time: 26.617 s [INFO] Finished at: 2016-08-03T12:06:15+08:00 [INFO] Final Memory: 8M/155M [ERROR] Plugin org.apache.maven.plugins:maven-install-plugin:2.4 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-install-plugin:jar:2.4: Could not transfer artifact org.apache.maven.plugins:maven-install-plugin:pom:2.4 from/to central (https://repo.maven.apache.org/maven2): Connect to repo.maven.apache.org:443 [repo.maven.apache.org/151.101.24.215] failed: Connection timed out: connect -> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
idea中,导入新的子模块后,在maven project中只有LifeCycle,没有Dependencies和Plugins
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通过pom依赖导入jar包,在maven dependencies中显示missing?大神们,怎么解决啊?
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MAVEN如何引入自己想要的Jar包?
![图片说明](https://img-ask.csdn.net/upload/201705/16/1494918245_155573.png) 用MAVEN新建工程,公司如果没有提供公共仓库的情况下,我在dependencies菜单栏搜索不到自己想要的包,我在eclipse里做什么操作,或者链接什么网站然后就可以在菜单栏搜到想要的包然后下载呢,不包括把包手动全下载到自己的仓库这种
maven利用nexus配置私服报如下异常如何解决?
先说下开发环境: 1. apache-maven-3.1.1 2. nexus-2.6.4-02-bundle 3. jdk1.7.0_45 最近开始使用maven构建项目(因为它实在太好用了),不过maven每次构建项目都要依赖中央仓库,这很不合理,所以使用了Nexus搭建了本地仓库,不过本地仓库搭建完成以后运行第一个命令mvn help:system就报了错,利用mvn -e help:system查看报错信息看了半天也没有头绪,下面就是这个报错信息: > [ERROR] Failed to execute goal > org.apache.maven.plugins:maven-help-plugin:2.2:system (default-cli) on > project standalone-pom: Execution default-cli of goal > org.apache.maven.plugins:maven-help-plugin:2.2:system failed: Plugin > org.apache.maven.plugins:maven-help-plugin:2.2 or one of its > dependencies could not be resolved: Failed to collect dependencies at > org.apache.maven.plugins:maven-help-plugin:jar:2.2 -> > org.apache.maven.plugin-tools:maven-plugin-tools-api:jar:2.4.3: Failed > to read artifact descriptor for > org.apache.maven.plugin-tools:maven-plugin-tools-api:jar:2.4.3: > Failure to find org.apache.maven:maven-parent:pom:8 in > http://127.0.0.1:8081/nexus/content/groups/public was cached in the > local repository, resolution will not be reattempted until the update > interval of roger-nexus has elapsed or updates are forced -> [Help > 1]org.apache.maven.lifecycle.LifecycleExecutionException: Failed to > execute goal org.apache.maven.plugins:maven-help-plugin:2.2:system > (default-cli) on project standalone-pom: Execution default-cli of goal > org.apache.maven.plugins:maven-help-plugin:2.2:system failed: Plugin > org.apache.maven.plugins:maven-help-plugin:2.2 or one of its > dependencies could not be resolved: Failed to collect dependencies at > org.apache.maven.plugins:maven-help-plugin:jar:2.2 -> > org.apache.maven.plugin-tools:maven-plugin-tools-api:jar:2.4.3 > at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:224) > at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153) > at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145) > at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84) > at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59) > at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183) > at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161) > at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:317) > at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:152) > at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555) > at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214) > at org.apache.maven.cli.MavenCli.main(MavenCli.java:158) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:606) > at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289) > at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229) > at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415) > at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356) > Caused by: org.apache.maven.plugin.PluginExecutionException: Execution > default-cli of goal > org.apache.maven.plugins:maven-help-plugin:2.2:system failed: > Pluginorg.apache.maven.plugins:maven-help-plugin:2.2 or one of its > dependencies couldnot be resolved: Failed to collect dependencies at > org.apache.maven.plugins:maven-help-plugin:jar:2.2 -> > org.apache.maven.plugin-tools:maven-plugin-tools-api:jar:2.4.3 > at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:87) > at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208) > ... 19 more Caused by: org.apache.maven.plugin.PluginResolutionException: Plugin > org.apache.maven.plugins:maven-help-plugin:2.2 or one of its > dependencies could not be resolved: Failed to collect dependencies at > org.apache.maven.plugins:maven-help-plugin:jar:2.2 -> > org.apache.maven.plugin-tools:maven-plugin-tools-api:jar:2.4.3 > at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:204) > at org.apache.maven.plugin.internal.DefaultMavenPluginManager.createPluginRealm(DefaultMavenPluginManager.java:357) > at org.apache.maven.plugin.internal.DefaultMavenPluginManager.setupPluginRealm(DefaultMavenPluginManager.java:325) > at org.apache.maven.plugin.DefaultBuildPluginManager.getPluginRealm(DefaultBuildPluginManager.java:180) > at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:83) > ... 20 more Caused by: org.eclipse.aether.collection.DependencyCollectionException: Failed to > collect dependencies at > org.apache.maven.plugins:maven-help-plugin:jar:2.2 > ->org.apache.maven.plugin-tools:maven-plugin-tools-api:jar:2.4.3 > at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:292) > at org.eclipse.aether.internal.impl.DefaultRepositorySystem.collectDependencies(DefaultRepositorySystem.java:317) > at org.apache.maven.plugin.internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:192) > ... 24 more Caused by: org.eclipse.aether.resolution.ArtifactDescriptorException: Failed > toread artifact descriptor for > org.apache.maven.plugin-tools:maven-plugin-tools-ap i:jar:2.4.3 > at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:370) > at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:217) > at org.eclipse.aether.internal.impl.DefaultDependencyCollector.process(DefaultDependencyCollector.java:461) > at org.eclipse.aether.internal.impl.DefaultDependencyCollector.collectDependencies(DefaultDependencyCollector.java:261) > ... 26 more Caused by: org.apache.maven.model.resolution.UnresolvableModelException: Failure > to find org.apache.maven:maven-parent:pom:8 in > http://127.0.0.1:8081/nexus/content/groups/public was cached in the > local repository, resolution will not be reattempted until the update > interval of roger-nexus has elapsed or updates are for ced > at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:126) > at org.apache.maven.model.building.DefaultModelBuilder.readParentExternally(DefaultModelBuilder.java:817) > at org.apache.maven.model.building.DefaultModelBuilder.readParent(DefaultModelBuilder.java:669) > at org.apache.maven.model.building.DefaultModelBuilder.build(DefaultModelBuilder.java:307) > at org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:361) > ... 29 more Caused by: org.eclipse.aether.resolution.ArtifactResolutionException: Failure to > find org.apache.maven:maven-parent:pom:8 in > http://127.0.0.1:8081/nexus/content/groups/public was cached in the > local repository, resolution will not be reattempted until the update > interval of roger-nexus has elapsed or updates are forced > at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:459) > at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:262) > at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:239) > at org.apache.maven.repository.internal.DefaultModelResolver.resolveModel(DefaultModelResolver.java:122) > ... 33 more Caused by: org.eclipse.aether.transfer.ArtifactNotFoundException: Failure to find > org.apache.maven:maven-parent:pom:8 in > http://127.0.0.1:8081/nexus/content/groups/public was cached in the > local repository, resolution will not be reattempted until the update > interval of roger-nexus has elapsed or updates are forced > at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.newException(DefaultUpdateCheckManager.java:232) > at org.eclipse.aether.internal.impl.DefaultUpdateCheckManager.checkArtifact(DefaultUpdateCheckManager.java:206) > at org.eclipse.aether.internal.impl.DefaultArtifactResolver.gatherDownloads(DefaultArtifactResolver.java:599) > at org.eclipse.aether.internal.impl.DefaultArtifactResolver.performDownloads(DefaultArtifactResolver.java:518) > at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:436) > ... 36 more [ERROR] [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information > about the errors and possible solutions, please read the following > articles: [ERROR] [Help 1] > http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException 我搜索了一部分报错信息,参考了Stack Overflow上的一些问题,猜测有可能是有些网站被墙所以无法下载一些.pom文件,不过当我将我的setting.xml中关于nexus的配置注释掉以后mvn help:system完全可以正常运行,所以应该是setting.xml的设置有问题: <?xml version="1.0" encoding="UTF-8"?> <settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd"> <localRepository>D:/DeveloperKit/maven_repos</localRepository> <pluginGroups> </pluginGroups> <proxies> </proxies> <servers> <server> <id>roger-nexus</id> <username>admin</username> <password>admin123</password> </server> </servers> <mirrors> <mirror> <id>roger-nexus</id> <mirrorOf>*</mirrorOf> <name>Mirror of roger</name> <url>http://127.0.0.1:8081/nexus/content/groups/public</url> </mirror> </mirrors> <profiles> <profile> <id>jdk-1.7</id> <activation> <jdk>1.7</jdk> </activation> <repositories> <repository> <id>jdk17</id> <name>Repository for JDK 1.7 builds</name> <url>http://127.0.0.1:8081/nexus/content/groups/public/</url> <layout>default</layout> <snapshotPolicy>always</snapshotPolicy> </repository> </repositories> </profile> </profiles> <activeProfiles> <activeProfile>jdk-1.7</activeProfile> </activeProfiles> </settings>
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