java Maven 插件测试中 org.apache.maven.repository.RepositorySystem 的组件查找异常
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/15779351/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
component lookup exception with org.apache.maven.repository.RepositorySystem in Maven plugin testing
提问by yegor256
I'm trying to use maven-plugin-testing-harnessversion 2.1 with the following test case:
我正在尝试将maven-plugin-testing-harness2.1 版与以下测试用例一起使用：
public class FooTest extends AbstractMojoTestCase {
@Override
protected void setUp() throws Exception {
super.setUp();
}
public void testSomething() throws Exception {
// todo
}
}
The test fails at the setUp()call:
setUp()调用时测试失败：
org.codehaus.plexus.component.repository.exception.ComponentLookupException: java.util.NoSuchElementException
role: org.apache.maven.repository.RepositorySystem
roleHint:
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:257)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:245)
at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:239)
at org.codehaus.plexus.PlexusTestCase.lookup(PlexusTestCase.java:206)
at org.apache.maven.plugin.testing.AbstractMojoTestCase.setUp(AbstractMojoTestCase.java:118)
at foo.FooTest.setUp(FooTest.java:54)
These dependencies I have in the pom.xml:
这些依赖项我在pom.xml：
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-plugin-api</artifactId>
<version>3.0.5</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-model</artifactId>
<version>3.0.5</version>
</dependency>
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-core</artifactId>
<version>3.0.5</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugin-testing</groupId>
<artifactId>maven-plugin-testing-harness</artifactId>
<version>2.1</version>
<scope>test</scope>
</dependency>
Any ideas?
有任何想法吗？
回答by smoke
Recently I faced the same exception. After a bit researching I found that maven-compat plugin solves the problem:
最近我遇到了同样的异常。经过一番研究，我发现 maven-compat 插件解决了这个问题：
<dependency>
<groupId>org.apache.maven</groupId>
<artifactId>maven-compat</artifactId>
<version>3.0.5</version>
<scope>test</scope>
</dependency>
回答by Rob
Leaving this here for anyone who runs into this problem in the future:
把这个留在这里给将来遇到这个问题的人：
smoke's answer does work, but make sure the versions of the dependencies included in yegor256's in the original question match. Adding org.apache.maven:maven-compat did not work for me until I had changed those 4 dependencies to also have version 3.0.5.
烟雾的答案确实有效，但请确保原始问题中 yegor256 中包含的依赖项版本匹配。添加 org.apache.maven:maven-compat 对我不起作用，直到我将这 4 个依赖项更改为版本 3.0.5。
回答by Ismael Sarmento
Currently, the class org.apache.maven.repository.RepositorySystemis found in the lib maven-resolver-api. If after adding maven-compat, anybody here still gets the error, make sure to add maven-resolver-api artifact as dependency as well.
目前，类org.apache.maven.repository.RepositorySystem位于 lib maven-resolver-api 中。如果添加 maven-compat 后，这里的任何人仍然收到错误，请确保也添加 maven-resolver-api 工件作为依赖项。
<dependency>
<groupId>org.apache.maven.resolver</groupId>
<artifactId>maven-resolver-api</artifactId>
<version>1.3.1</version>
</dependency>
