问题：
在当前项目和插件组org.codehaus.mojo中未找到前缀“exec”的插件
汪臻
我已经阅读了几个类似问题的问题和帮助1页。不幸的是，我被困住了。
一个可能的原因可能是由代理引起的，但这里没有这样的代理。此外，当我从Eclipse更新它时，我PC中的所有maven项目都已成功更新。所以我放弃了这种可能性。
我检查的另一件事是在我的本地存储库中查找codehaus，我找到了它（C:\Users\myUser.m2\repository\org\codehaus\mojo）。
另一次尝试，我尝试在设置中添加pluginGroup/pluginGroup。该项目是一个非常简单的你好词，使用Spring批处理，只有一个Tasklet及其执行方法。没有公共静态空main方法。
命令exe，在我添加Matteo建议后打印整个错误：
C:\temp\TaskletJavaConfig\spring-batch-helloworld>mvn compile exec:java -e
Picked up JAVA_TOOL_OPTIONS: -agentlib:jvmhook
Picked up _JAVA_OPTIONS: -Xrunjvmhook -Xbootclasspath/a:C:\PROGRA~2\HP\QUICKT~1\
bin\JAVA_S~1\classes;C:\PROGRA~2\HP\QUICKT~1\bin\JAVA_S~1\classes\jasmine.jar
[INFO] Error stacktraces are turned on.
[INFO] Scanning for projects...
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/mojo/exec-maven-p
lugin/1.1/exec-maven-plugin-1.1.pom
[WARNING] Failed to retrieve plugin descriptor for org.codehaus.mojo:exec-maven-
plugin:1.1: Plugin org.codehaus.mojo:exec-maven-plugin:1.1 or one of its depende
ncies could not be resolved: Failed to read artifact descriptor for org.codehaus
.mojo:exec-maven-plugin:jar:1.1
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-deploy-plugin/2.7/maven-deploy-plugin-2.7.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-deploy-plugin:2.7: Plugin org.apache.maven.plugins:maven-deploy-plugin:2.7 or
one of its dependencies could not be resolved: Failed to read artifact descripto
r for org.apache.maven.plugins:maven-deploy-plugin:jar:2.7
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-site-plugin/3.3/maven-site-plugin-3.3.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-site-plugin:3.3: Plugin org.apache.maven.plugins:maven-site-plugin:3.3 or one
of its dependencies could not be resolved: Failed to read artifact descriptor fo
r org.apache.maven.plugins:maven-site-plugin:jar:3.3
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-antrun-plugin/1.3/maven-antrun-plugin-1.3.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-antrun-plugin:1.3: Plugin org.apache.maven.plugins:maven-antrun-plugin:1.3 or
one of its dependencies could not be resolved: Failed to read artifact descripto
r for org.apache.maven.plugins:maven-antrun-plugin:jar:1.3
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-assembly-plugin/2.2-beta-5/maven-assembly-plugin-2.2-beta-5.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-assembly-plugin:2.2-beta-5: Plugin org.apache.maven.plugins:maven-assembly-plu
gin:2.2-beta-5 or one of its dependencies could not be resolved: Failed to read
artifact descriptor for org.apache.maven.plugins:maven-assembly-plugin:jar:2.2-b
eta-5
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-dependency-plugin/2.8/maven-dependency-plugin-2.8.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-dependency-plugin:2.8: Plugin org.apache.maven.plugins:maven-dependency-plugin
:2.8 or one of its dependencies could not be resolved: Failed to read artifact d
escriptor for org.apache.maven.plugins:maven-dependency-plugin:jar:2.8
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-release-plugin/2.3.2/maven-release-plugin-2.3.2.pom
[WARNING] Failed to retrieve plugin descriptor for org.apache.maven.plugins:mave
n-release-plugin:2.3.2: Plugin org.apache.maven.plugins:maven-release-plugin:2.3
.2 or one of its dependencies could not be resolved: Failed to read artifact des
criptor for org.apache.maven.plugins:maven-release-plugin:jar:2.3.2
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/mojo/maven-metada
ta.xml
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven
-metadata.xml
[WARNING] Could not transfer metadata org.codehaus.mojo/maven-metadata.xml from/
to central (https://repo.maven.apache.org/maven2): sun.security.validator.Valida
torException: PKIX path building failed: sun.security.provider.certpath.SunCertP
athBuilderException: unable to find valid certification path to requested target
[WARNING] Could not transfer metadata org.apache.maven.plugins/maven-metadata.xm
l from/to central (https://repo.maven.apache.org/maven2): sun.security.validator
.ValidatorException: PKIX path building failed: sun.security.provider.certpath.S
unCertPathBuilderException: unable to find valid certification path to requested
target
[WARNING] Failure to transfer org.codehaus.mojo/maven-metadata.xml 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 metadata org.codehaus.mojo/maven-
metadata.xml from/to central (https://repo.maven.apache.org/maven2): sun.securit
y.validator.ValidatorException: PKIX path building failed: sun.security.provider
.certpath.SunCertPathBuilderException: unable to find valid certification path t
o requested target
[WARNING] Failure to transfer org.apache.maven.plugins/maven-metadata.xml from h
ttps://repo.maven.apache.org/maven2 was cached in the local repository, resoluti
on will not be reattempted until the update interval of central has elapsed or u
pdates are forced. Original error: Could not transfer metadata org.apache.maven.
plugins/maven-metadata.xml from/to central (https://repo.maven.apache.org/maven2
): sun.security.validator.ValidatorException: PKIX path building failed: sun.sec
urity.provider.certpath.SunCertPathBuilderException: unable to find valid certif
ication path to requested target
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.094 s
[INFO] Finished at: 2016-01-13T12:48:00-06:00
[INFO] Final Memory: 13M/123M
[INFO] ------------------------------------------------------------------------
[ERROR] No plugin found for prefix 'exec' in the current project and in the plug
in groups [org.codehaus.mojo, org.apache.maven.plugins] available from the repos
itories [local (C:\Users\myUser\.m2\repository), central (https://repo.maven.ap
ache.org/maven2)] -> [Help 1]
org.apache.maven.plugin.prefix.NoPluginFoundForPrefixException: No plugin found
for prefix 'exec' in the current project and in the plugin groups [org.codehaus.
mojo, org.apache.maven.plugins] available from the repositories [local (C:\Users
\myUser\.m2\repository), central (https://repo.maven.apache.org/maven2)]
at org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.r
esolve(DefaultPluginPrefixResolver.java:93)
at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginF
orPrefix(MojoDescriptorCreator.java:265)
at org.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDesc
riptor(MojoDescriptorCreator.java:219)
at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalcul
ator.calculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:103)
at org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalcul
ator.calculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:83)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(Lifecycl
eStarter.java:89)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Laun
cher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.jav
a:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(La
uncher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:
356)
[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 rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/NoPluginFoundF
orPrefixException
C:\temp\TaskletJavaConfig\spring-batch-helloworld>
没有代理的证据
C:\temp\TaskletJavaConfig\spring-batch-helloworld>netsh winhttp show proxy
Current WinHTTP proxy settings:
Direct access (no proxy server).
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.test</groupId>
<artifactId>spring-batch-helloworld</artifactId>
<version>20131227</version>
<name>spring batch hello world</name>
<packaging>jar</packaging>
<!-- pluginRepositories>
<pluginRepository>
<id>numberformat-releases</id>
<url>https://raw.github.com/numberformat/20130213/master/repo</url>
</pluginRepository>
</pluginRepositories-->
<properties>
<spring.framework.version>3.2.1.RELEASE</spring.framework.version>
<spring.batch.version>3.0.0.M2</spring.batch.version>
</properties>
<repositories>
<repository>
<id>spring-s3</id>
<name>Spring Maven MILESTONE Repository</name>
<url>http://maven.springframework.org/milestone</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<dependency>
<groupId>org.springframework.batch</groupId>
<artifactId>spring-batch-core</artifactId>
<version>${spring.batch.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.batch</groupId>
<artifactId>spring-batch-infrastructure</artifactId>
<version>${spring.batch.version}</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.framework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.framework.version}</version>
</dependency>
<dependency>
<groupId>hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<version>1.8.0.7</version>
</dependency>
</dependencies>
<!-- added after Matteo recommendation-->
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.1</version>
<configuration>
<mainClass>org.springframework.batch.core.launch.support.CommandLineJobRunner</mainClass>
<arguments>
<argument>com.test.config.HelloWorldJobConfig</argument>
<argument>helloWorldJob</argument>
</arguments>
</configuration>
</plugin>
</plugins>
</build>
<!-- build>
<plugins>
<plugin>
<groupId>github.numberformat</groupId>
<artifactId>blog-plugin</artifactId>
<version>1.0-SNAPSHOT</version>
<configuration>
<gitUrl>https://github.com/numberformat/wordpress/tree/master/${project.version}/${project.artifactId}</gitUrl>
</configuration>
<executions>
<execution>
<id>1</id>
<phase>site</phase>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build-->
<!-- Run the application using:
mvn compile exec:java -Dexec.mainClass=org.springframework.batch.core.launch.support.CommandLineJobRunner -Dexec.args="com.test.config.HelloWorldJobConfig helloWorldJob"
-->
</project>
设置.xml
<?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">
<pluginGroups>
<pluginGroup>org.codehaus.mojo</pluginGroup>
</pluginGroups>
<proxies>
</proxies>
<servers>
</servers>
<mirrors>
</mirrors>
<profiles>
</profiles>
</settings>
仅包含mvn org.codehaus.mojo的日志
C:\temp\TaskletJavaConfig\spring-batch-helloworld>mvn org.codehaus.mojo:exec-mav
en-plugin:1.1:java
Picked up JAVA_TOOL_OPTIONS: -agentlib:jvmhook
Picked up _JAVA_OPTIONS: -Xrunjvmhook -Xbootclasspath/a:C:\PROGRA~2\HP\QUICKT~1\
bin\JAVA_S~1\classes;C:\PROGRA~2\HP\QUICKT~1\bin\JAVA_S~1\classes\jasmine.jar
[INFO] Scanning for projects...
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/mojo/exec-maven-p
lugin/1.1/exec-maven-plugin-1.1.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.356 s
[INFO] Finished at: 2016-01-13T15:29:20-06:00
[INFO] Final Memory: 10M/123M
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin org.codehaus.mojo:exec-maven-plugin:1.1 or one of its dependencie
s could not be resolved: Failed to read artifact descriptor for org.codehaus.moj
o:exec-maven-plugin:jar:1.1: Could not transfer artifact org.codehaus.mojo:exec-
maven-plugin:pom:1.1 from/to central (https://repo.maven.apache.org/maven2): sun
.security.validator.ValidatorException: PKIX path building failed: sun.security.
provider.certpath.SunCertPathBuilderException: unable to find valid certificatio
n path to requested target -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
ch.
[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 rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResoluti
onException
C:\temp\TaskletJavaConfig\spring-batch-helloworld>mvn compile mvn org.codehaus.m
ojo:exec-maven-plugin:1.1:java
Picked up JAVA_TOOL_OPTIONS: -agentlib:jvmhook
Picked up _JAVA_OPTIONS: -Xrunjvmhook -Xbootclasspath/a:C:\PROGRA~2\HP\QUICKT~1\
bin\JAVA_S~1\classes;C:\PROGRA~2\HP\QUICKT~1\bin\JAVA_S~1\classes\jasmine.jar
[INFO] Scanning for projects...
Downloading: https://repo.maven.apache.org/maven2/org/codehaus/mojo/exec-maven-p
lugin/1.1/exec-maven-plugin-1.1.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.250 s
[INFO] Finished at: 2016-01-13T15:31:03-06:00
[INFO] Final Memory: 11M/123M
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin org.codehaus.mojo:exec-maven-plugin:1.1 or one of its dependencie
s could not be resolved: Failed to read artifact descriptor for org.codehaus.moj
o:exec-maven-plugin:jar:1.1: Could not transfer artifact org.codehaus.mojo:exec-
maven-plugin:pom:1.1 from/to central (https://repo.maven.apache.org/maven2): sun
.security.validator.ValidatorException: PKIX path building failed: sun.security.
provider.certpath.SunCertPathBuilderException: unable to find valid certificatio
n path to requested target -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
ch.
[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 rea
d the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResoluti
onException
共有1个答案
督德明
您应该将pom文件配置为至少声明Exec Maven插件，如下所示：
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.1</version>
</plugin>
</plugins>
</build>
因此，您将能够使用exec： java插件：目标命令。
您甚至可以避免以下选项：
-Dexec.mainClass=org.springframework.batch.core.launch.support.CommandLineJobRunner -Dexec.args="com.test.config.HelloWorldJobConfig helloWorldJob"
通过在POM中将其配置为相同插件配置的一部分，如下所示：
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.1</version>
<configuration>
<mainClass>org.springframework.batch.core.launch.support.CommandLineJobRunner</mainClass>
<arguments>
<argument>com.test.config.HelloWorldJobConfig</argument>
<argument>helloWorldJob</argument>
</arguments>
</configuration>
</plugin>
如您所见，我们实际上是在告诉插件在哪里可以找到主类及其参数。因此，您可以简单地调用：
mvn compile exec:java
它应该执行相同的预期结果。
实际上，您的maven执行在访问网络上的插件元数据时遇到了问题：
[警告]无法检索org.codehaus的插件描述符。mojo:exec maven-plugin:1.1:plugin org.codehaus。mojo:exec maven plugin:1.1或其一个依赖项无法解析：无法读取org.codehaus的工件描述符。mojo:exec maven plugin:jar:1.1
如果插件前缀一直存在问题，那么这可能取决于您的网络设置。通过调用Exec Maven插件，可以执行快速检查，该插件不是通过其插件前缀（Exec），而是通过以下限定全名：
mvn compile mvn org.codehaus.mojo:exec-maven-plugin:1.1:java
注意模式：我们正在调用maven，然后是一个groupId:artifactId:version:goal，它将完全相同。这将检查您的pom配置（和插件配置）是否正确。
更新3如您的输出日志所示，Maven正试图通过https（注意最后的“s”）访问存储库，因此通过SSL，然后在生成输出中出现证书问题：
sun.security.validator。ValidatorException:PKIX路径生成失败：sun.security。provider.certpath。SunCertPathBuilderException：无法找到请求目标的有效证书路径
那么你有两个选择：
告诉maven忽略SSL错误，如另一个SO答案中所述- 首先通过运行
mvn help：有效设置检查您的设置，以确保您获得maven应用的真实设置（如果该命令实际有效），然后在您的设置中重新配置非SSL存储库与另一个SO答案上的替代方案
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