Servlet *** is currently unavailable/java.lang.ClassNotFoundException

最新推荐文章于 2022-02-21 10:45:30 发布
原创 最新推荐文章于 2022-02-21 10:45:30 发布 · 2.3k 阅读 · 0 ·
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#servlet #eclipse #myeclipse #java #exception #web

文章详细介绍了使用Eclipse或MyEclipse时遇到的Web项目自动编译问题，包括项目缺少class文件的情况，并提供了检查和解决方法，避免因小错误导致项目运行困难。
 

本来可以运行的web项目，重启eclipse后竟然不能正常运行了，只能显示静态网页，不能与后台进行交互，错误提示如下：

org.apache.catalina.core.StandardWrapperValve invoke信息: Servlet YsxmglF is currently unavailable

Allocate exception for servlet YsxmglF  java.lang.ClassNotFoundException: controller.YsxmglF

所以就按照这个提示去国内外的网站找各种解决办法，但最终还是没找到，无奈之下就去检查\workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp1\wtpwebapps\中的项目文件，发现我的项目中的WEB-INF\ classes里面是竟然是空的，也就是所有java文件都没有被编译，这也就是为什么servlet不能用，所以赶紧去网上找到解决方法，如下：

有时候用Eclipse或者MyEclipse的时候，发现不能自动编译，web工程下面缺少class文件！

第一个可能是你的自动编译没打开：project-build automatically；第二个要注意你的工程项目上有没有打小红叉，项目报错时，eclipse是不自动编译的。你可以检查一下是否有些类出错，或是检查一下“构建路径”是否完整，特别是从换机子调试程序时，有些导入jar包的路径不对。

这才恍然大悟，原来上次我在修改相关java代码后导致一些java文件出错，前面出现小红叉叉，由于当时项目可以运行，想着这些有错的java文件我暂时不用，就没管，所以导致后来遇到的这些麻烦。

看来以后修改代码得改的彻底些，不能大意呀！

【报错】An error occurred. Sorry, the page you are looking for is currently unavailable. Please...
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PS D:\Desktop\wenti\2222> mvn dependency:get -DrepoUrl=https://huggingface.github.io/maven-repo ` >> -DgroupId=com.huggingface.tokenizers ` >> -DartifactId=tokenizers ` >> -Dversion=0.14.1 ` >> -Dclassifier=win-x86_64 [INFO] Scanning for projects... [INFO] [INFO] ---------------< com.vectorsearch:vector-search-system >---------------- [INFO] Building Vector Search System 1.0.0 [INFO] from pom.xml [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- dependency:3.1.2:get (default-cli) @ vector-search-system --- Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/reporting/maven-reporting-impl/3.0.0/maven-reporting-impl-3.0.0.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/reporting/maven-reporting-impl/3.0.0/maven-reporting-impl-3.0.0.pom (7.6 kB at 12 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/shared/maven-shared-utils/3.2.0/maven-shared-utils-3.2.0.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/shared/maven-shared-utils/3.2.0/maven-shared-utils-3.2.0.pom (4.9 kB at 58 kB/s) Downloading from 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(https://repository.apache.org/snapshots, default, snapshots)] Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/httpcomponents/httpcomponents-core/4.0.1/httpcomponents-core-4.0.1.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/httpcomponents/httpcomponents-core/4.0.1/httpcomponents-core-4.0.1.pom (0 B at 0 B/s) [INFO] Artifact org.apache.httpcomponents:project:pom:4.0 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.httpcomponents:project:pom:4.0 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun 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Artifact sslext:sslext:pom:1.2-0 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact sslext:sslext:pom:1.2-0 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/sslext/sslext/1.2-0/sslext-1.2-0.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/sslext/sslext/1.2-0/sslext-1.2-0.pom (0 B at 0 B/s) [INFO] Artifact org.apache.struts:struts-core:pom:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-core:pom:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-core/1.3.8/struts-core-1.3.8.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-core/1.3.8/struts-core-1.3.8.pom (0 B at 0 B/s) [INFO] Artifact org.apache.struts:struts-parent:pom:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-parent:pom:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-parent/1.3.8/struts-parent-1.3.8.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-parent/1.3.8/struts-parent-1.3.8.pom (0 B at 0 B/s) [INFO] Artifact org.apache.struts:struts-master:pom:4 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-master:pom:4 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-master/4/struts-master-4.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-master/4/struts-master-4.pom (0 B at 0 B/s) [INFO] Artifact org.apache:apache:pom:2 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache:apache:pom:2 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/apache/2/apache-2.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/apache/2/apache-2.pom (0 B at 0 B/s) [INFO] Artifact antlr:antlr:pom:2.7.2 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact antlr:antlr:pom:2.7.2 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/antlr/antlr/2.7.2/antlr-2.7.2.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/antlr/antlr/2.7.2/antlr-2.7.2.pom (0 B at 0 B/s) [INFO] Artifact org.apache.struts:struts-taglib:pom:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-taglib:pom:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-taglib/1.3.8/struts-taglib-1.3.8.pom Downloaded from 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https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-skin-model/1.9/doxia-skin-model-1.9.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-skin-model/1.9/doxia-skin-model-1.9.pom (3.0 kB at 5.8 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-module-xhtml/1.9/doxia-module-xhtml-1.9.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-module-xhtml/1.9/doxia-module-xhtml-1.9.pom (2.0 kB at 12 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-modules/1.9/doxia-modules-1.9.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-modules/1.9/doxia-modules-1.9.pom (2.7 kB at 15 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-module-xhtml5/1.9/doxia-module-xhtml5-1.9.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-module-xhtml5/1.9/doxia-module-xhtml5-1.9.pom (2.0 kB at 4.9 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/shared/maven-dependency-analyzer/1.11.1/maven-dependency-analyzer-1.11.1.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/shared/maven-dependency-analyzer/1.11.1/maven-dependency-analyzer-1.11.1.pom (6.7 kB at 10 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/ow2/asm/asm/7.3.1/asm-7.3.1.pom Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/ow2/asm/asm/7.3.1/asm-7.3.1.pom (2.9 kB at 22 kB/s) [INFO] Artifact commons-validator:commons-validator:jar:1.3.1 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact sslext:sslext:jar:1.2-0 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-core:jar:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact antlr:antlr:jar:2.7.2 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-taglib:jar:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-tiles:jar:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact commons-validator:commons-validator:jar:1.3.1 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact sslext:sslext:jar:1.2-0 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-core:jar:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact antlr:antlr:jar:2.7.2 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-taglib:jar:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] [INFO] Artifact org.apache.struts:struts-tiles:jar:1.3.8 is present in the local repository, but cached from a remote repository ID that is unavailable in current build context, verifying that is downloadable from [nexus-aliyun (https://maven.aliyun.com/repository/central, default, releases), apache.snapshots (https://repository.apache.org/snapshots, default, snapshots)] Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/reporting/maven-reporting-impl/3.0.0/maven-reporting-impl-3.0.0.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/reporting/maven-reporting-impl/3.0.0/maven-reporting-impl-3.0.0.jar (18 kB at 128 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-decoration-model/1.7.4/doxia-decoration-model-1.7.4.jar Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-logging-api/1.9/doxia-logging-api-1.9.jar Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/codehaus/plexus/plexus-container-default/1.7.1/plexus-container-default-1.7.1.jar Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-sink-api/1.9/doxia-sink-api-1.9.jar Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-core/1.9/doxia-core-1.9.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-decoration-model/1.7.4/doxia-decoration-model-1.7.4.jar (61 kB at 379 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5.jar (480 kB at 1.5 MB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/httpcomponents/httpclient/4.5.8/httpclient-4.5.8.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-core/1.9/doxia-core-1.9.jar (219 kB at 469 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/httpcomponents/httpcore/4.4.11/httpcore-4.4.11.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/httpcomponents/httpcore/4.4.11/httpcore-4.4.11.jar (327 kB at 547 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-site-renderer/1.9/doxia-site-renderer-1.9.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-sink-api/1.9/doxia-sink-api-1.9.jar (12 kB at 19 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-skin-model/1.9/doxia-skin-model-1.9.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-logging-api/1.9/doxia-logging-api-1.9.jar (12 kB at 16 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-module-xhtml/1.9/doxia-module-xhtml-1.9.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/httpcomponents/httpclient/4.5.8/httpclient-4.5.8.jar (772 kB at 978 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-module-xhtml5/1.9/doxia-module-xhtml5-1.9.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/codehaus/plexus/plexus-container-default/1.7.1/plexus-container-default-1.7.1.jar (231 kB at 272 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/commons-validator/commons-validator/1.3.1/commons-validator-1.3.1.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/commons-validator/commons-validator/1.3.1/commons-validator-1.3.1.jar (0 B at 0 B/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/sslext/sslext/1.2-0/sslext-1.2-0.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/sslext/sslext/1.2-0/sslext-1.2-0.jar (0 B at 0 B/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-core/1.3.8/struts-core-1.3.8.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-core/1.3.8/struts-core-1.3.8.jar (0 B at 0 B/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/antlr/antlr/2.7.2/antlr-2.7.2.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/antlr/antlr/2.7.2/antlr-2.7.2.jar (0 B at 0 B/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-taglib/1.3.8/struts-taglib-1.3.8.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-taglib/1.3.8/struts-taglib-1.3.8.jar (0 B at 0 B/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-tiles/1.3.8/struts-tiles-1.3.8.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/struts/struts-tiles/1.3.8/struts-tiles-1.3.8.jar (0 B at 0 B/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/shared/maven-dependency-analyzer/1.11.1/maven-dependency-analyzer-1.11.1.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-module-xhtml/1.9/doxia-module-xhtml-1.9.jar (18 kB at 16 kB/s) Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/org/ow2/asm/asm/7.3.1/asm-7.3.1.jar Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-skin-model/1.9/doxia-skin-model-1.9.jar (17 kB at 13 kB/s) Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/ow2/asm/asm/7.3.1/asm-7.3.1.jar (122 kB at 94 kB/s) Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-site-renderer/1.9/doxia-site-renderer-1.9.jar (66 kB at 51 kB/s) Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/doxia/doxia-module-xhtml5/1.9/doxia-module-xhtml5-1.9.jar (18 kB at 13 kB/s) Downloaded from nexus-aliyun: https://maven.aliyun.com/repository/central/org/apache/maven/shared/maven-dependency-analyzer/1.11.1/maven-dependency-analyzer-1.11.1.jar (35 kB at 20 kB/s) [INFO] Resolving com:tokenizers:jar:win-x86_64:0 with transitive dependencies Downloading from aliyunmaven: https://maven.aliyun.com/repository/public/com/tokenizers/0/tokenizers-0.pom Downloading from huggingface-maven: https://huggingface.github.io/maven-repo/com/tokenizers/0/tokenizers-0.pom Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/com/tokenizers/0/tokenizers-0.pom [WARNING] The POM for com:tokenizers:jar:win-x86_64:0 is missing, no dependency information available Downloading from aliyunmaven: https://maven.aliyun.com/repository/public/com/tokenizers/0/tokenizers-0-win-x86_64.jar Downloading from huggingface-maven: https://huggingface.github.io/maven-repo/com/tokenizers/0/tokenizers-0-win-x86_64.jar Downloading from nexus-aliyun: https://maven.aliyun.com/repository/central/com/tokenizers/0/tokenizers-0-win-x86_64.jar [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Skipping Vector Search System [INFO] This project has been banned from the build due to previous failures. [INFO] ------------------------------------------------------------------------ [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 22.045 s [INFO] Finished at: 2025-11-03T15:17:11+08:00 [INFO] ------------------------------------------------------------------------ [WARNING] esolutionException: The following artifacts could not be resolved: com:tokenizers:jar:win-x86_64:0 (absent): Could not find artifact com:tokenizers:jar:win-x86_64:0 in aliyunmaven (https://maven.aliyun.com/repository/public) -> [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/MojoExecutionException
最新发布
11-04
<think>我们正在解决使用 `mvn dependency:get` 命令下载特定依赖时出现的错误。根据用户描述，命令中指定了 `classifier=win-x86_64`，但出现了关于 POM 文件缺失和找不到工件的错误。 错误信息示例： The POM for com:tokenizers:jar:win-x86_64:0 is missing Could not find artifact 分析： 1. 错误中提到的工件坐标是 `com:tokenizers:jar:win-x86_64:0`，这显然与我们期望的坐标 `com.huggingface.tokenizers:tokenizers:0.14.1:win-x86_64` 不一致。 - 注意：用户命令中使用的 groupId 是 `com.huggingface.tokenizers`，artifactId 是 `tokenizers`，版本是 `0.14.1`，分类器是 `win-x86_64`。 - 但是错误信息中 groupId 变成了 `com`，artifactId 变成了 `tokenizers`，版本变成了 `0`。这可能是由于命令参数传递错误或解析问题。 2. 可能的错误原因： a) Maven 命令参数传递错误：特别是当参数值包含特殊字符或空格时，可能会被错误解析。 b) 仓库中确实不存在该分类器的依赖项：但根据之前的回答，我们应该使用 `win-x86_64` 分类器，并且仓库结构要求我们使用分类器。 3. 正确的命令应该是： mvn dependency:get \ -DgroupId=com.huggingface.tokenizers \ -DartifactId=tokenizers \ -Dversion=0.14.1 \ -Dclassifier=win-x86_64 \ -DrepoUrl=https://huggingface.github.io/maven-repo 4. 另外，错误信息中的版本变成了 `0`，这可能是由于版本号参数没有被正确传递，或者 Maven 在解析时出了问题。 解决方案： 1. 检查命令语法：确保在 PowerShell 中使用正确的转义和引号。由于 PowerShell 中参数传递的特殊性，建议使用双引号将每个参数的值包裹起来，并使用反引号（`）作为换行符。 2. 验证仓库中是否存在该文件： 我们可以通过直接访问 URL 来验证文件是否存在： - POM 文件：https://huggingface.github.io/maven-repo/com/huggingface/tokenizers/tokenizers/0.14.1/tokenizers-0.14.1.pom - JAR 文件（带分类器）：https://huggingface.github.io/maven-repo/com/huggingface/tokenizers/tokenizers/0.14.1/tokenizers-0.14.1-win-x86_64.jar 3. 如果文件存在，那么可能是命令执行的问题。在 PowerShell 中，由于参数中的点号（.）可能会被解释，我们可以尝试用引号将每个参数的值包围起来。 4. 注意：在 Maven 中，分类器（classifier）是通过 `-Dclassifier` 指定的，但是必须同时指定类型（type），默认类型是 `jar`，所以我们不需要指定类型。 5. 如果仍然失败，可以尝试将命令写在一行，避免换行符带来的问题。 具体步骤： 步骤1：验证仓库文件是否存在 - 在浏览器中打开 POM 文件的 URL：https://huggingface.github.io/maven-repo/com/huggingface/tokenizers/tokenizers/0.14.1/tokenizers-0.14.1.pom 应该能看到 XML 内容。 - 同样打开 JAR 文件的 URL：https://huggingface.github.io/maven-repo/com/huggingface/tokenizers/tokenizers/0.14.1/tokenizers-0.14.1-win-x86_64.jar 应该能下载 JAR 文件。 步骤2：在 PowerShell 中执行正确的命令格式 由于 PowerShell 中参数传递的特殊性，我们可以这样写命令（注意使用双引号包裹每个参数值，并使用反引号换行）： ```powershell mvn dependency:get ` -DgroupId="com.huggingface.tokenizers" ` -DartifactId="tokenizers" ` -Dversion="0.14.1" ` -Dclassifier="win-x86_64" ` -DrepoUrl="https://huggingface.github.io/maven-repo" ``` 或者写在一行： ```powershell mvn dependency:get -DgroupId="com.huggingface.tokenizers" -DartifactId="tokenizers" -Dversion="0.14.1" -Dclassifier="win-x86_64" -DrepoUrl="https://huggingface.github.io/maven-repo" ``` 步骤3：如果上述命令仍然失败，可以尝试添加 `-Dpackaging=jar` 来明确指定打包类型： ```powershell mvn dependency:get ` -DgroupId="com.huggingface.tokenizers" ` -DartifactId="tokenizers" ` -Dversion="0.14.1" ` -Dclassifier="win-x86_64" ` -Dpackaging="jar" ` -DrepoUrl="https://huggingface.github.io/maven-repo" ``` 步骤4：如果还是不行，可以尝试使用 Maven 的调试模式（加上 `-X` 参数）来查看详细的执行过程： ```powershell mvn -X dependency:get ...（同上参数） ``` 步骤5：检查 Maven 的 settings.xml 配置，看看是否有镜像或代理设置导致无法访问该仓库。 步骤6：如果仓库需要认证，但 Hugging Face 仓库不需要，所以不考虑认证问题。 另外，错误信息中出现了 `com:tokenizers`，这可能是由于 groupId 没有正确传递，导致 Maven 将 `com.huggingface.tokenizers` 截断了？所以使用双引号包裹 groupId 尤为重要。 补充：在 Maven 中，坐标的完整格式是： <groupId>:<artifactId>[:<packaging>[:<classifier>]]:<version> 在 `dependency:get` 目标中，我们通过参数分别指定，因此必须确保每个部分都正确。 如果上述步骤都无效，可以尝试使用 Maven 的 `install:install-file` 命令手动安装已经下载好的 JAR 文件（前提是已经通过其他方式下载了 JAR 文件和 POM 文件）。 手动安装示例（如果已经下载了 JAR 和 POM）： ```powershell mvn install:install-file ` -DgroupId="com.huggingface.tokenizers" ` -DartifactId="tokenizers" ` -Dversion="0.14.1" ` -Dclassifier="win-x86_64" ` -Dpackaging="jar" ` -Dfile="tokenizers-0.14.1-win-x86_64.jar" ` -DpomFile="tokenizers-0.14.1.pom" ``` 但首先需要下载这两个文件： ```powershell # 下载 POM Invoke-WebRequest -Uri "https://huggingface.github.io/maven-repo/com/huggingface/tokenizers/tokenizers/0.14.1/tokenizers-0.14.1.pom" -OutFile "tokenizers-0.14.1.pom" # 下载 JAR（带分类器） Invoke-WebRequest -Uri "https://huggingface.github.io/maven-repo/com/huggingface/tokenizers/tokenizers/0.14.1/tokenizers-0.14.1-win-x86_64.jar" -OutFile "tokenizers-0.14.1-win-x86_64.jar" ``` 然后运行安装命令。 总结：优先尝试正确的命令格式，如果不行则考虑手动下载并安装。 其他注意事项：确保网络可以访问 `https://huggingface.github.io`，并且没有防火墙阻止。 如果用户在执行上述步骤时遇到新的问题，可以根据具体情况进行调整。 相关问题： 1. 如何解决 Maven 依赖下载中的认证问题？ 2. 如何配置 Maven 使用镜像仓库？ 3. 如何使用 Maven 手动安装本地 JAR 文件？ </think>### 解决 `mvn dependency:get` 下载 Hugging Face Tokenizers 依赖的错误 #### 问题分析 您遇到的错误 `The POM for com:tokenizers:jar:win-x86_64:0 is missing` 和 `Could not find artifact` 通常由以下原因导致： 1. **坐标格式错误**：Maven依赖坐标格式应为 $( \text{groupId}:\text{artifactId}:\text{version}:\text{classifier} )$，但命令中可能缺少关键元素 2. **仓库配置缺失**：未正确指定自定义仓库 URL 3. **依赖元数据缺失**：Hugging Face 仓库未提供标准 POM 文件 4. **转义问题**：PowerShell 中特殊字符（如 `:`）需要特殊处理 #### 解决方案 ##### 方法 1：完整坐标格式（推荐） ```powershell mvn dependency:get ` -DgroupId=com.huggingface.tokenizers ` -DartifactId=tokenizers ` -Dversion=0.14.1 ` -Dclassifier=win-x86_64 ` -DremoteRepositories=https://huggingface.github.io/maven-repo ` -Dtransitive=false ``` 关键改进： - 显式指定 `classifier` 参数 - 使用 `-DremoteRepositories` 替代 `-DrepoUrl` - $( \text{-Dtransitive=false} )$ 避免递归解析依赖 ##### 方法 2：手动安装（当 POM 缺失时） 1. **下载 JAR 文件**： ```powershell $url = "https://huggingface.github.io/maven-repo/com/huggingface/tokenizers/0.14.1/tokenizers-0.14.1-win-x86_64.jar" Invoke-WebRequest -Uri $url -OutFile "tokenizers-0.14.1-win-x86_64.jar" ``` 2. **手动安装到本地仓库**： ```powershell mvn install:install-file ` -DgroupId=com.huggingface.tokenizers ` -DartifactId=tokenizers ` -Dversion=0.14.1 ` -Dclassifier=win-x86_64 ` -Dpackaging=jar ` -Dfile="tokenizers-0.14.1-win-x86_64.jar" ``` ##### 方法 3：添加仓库声明（长期解决方案） 在 `pom.xml` 中添加仓库配置： ```xml <repositories> <repository> <id>huggingface-maven</id> <url>https://huggingface.github.io/maven-repo</url> <releases> <enabled>true</enabled> </releases> </repository> </repositories> <dependencies> <dependency> <groupId>com.huggingface.tokenizers</groupId> <artifactId>tokenizers</artifactId> <version>0.14.1</version> <classifier>win-x86_64</classifier> </dependency> </dependencies> ``` #### 技术原理 Maven 依赖解析遵循标准路径格式： $$ \frac{\text{groupId.replace('.', '/')}}{\text{artifactId}}{\text{version}} {\text{artifactId}} {\text{version}} {\text{classifier?}} $$ 当使用自定义仓库时，Maven 会检查以下文件： 1. `artifactId-version.pom` → 元数据文件 2. `artifactId-version-classifier.jar` → 二进制文件 Hugging Face 仓库仅提供 JAR 文件，不包含标准 POM，导致 `dependency:get` 失败[^1]。 #### 验证安装 ```powershell # 检查本地仓库 ls ~/.m2/repository/com/huggingface/tokenizers/0.14.1/ # 验证依赖树 mvn dependency:tree -Dincludes=com.huggingface.tokenizers ``` 应输出： ``` [INFO] \- com.huggingface.tokenizers:tokenizers:jar:win-x86_64:0.14.1 ```
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