maven-jetty-plugin问题

Question

我需要在模块测试之前启动jetty。示例：

<?xml version="1.0" encoding="UTF-8"?>
<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>jetty-test</groupId>
    <artifactId>jetty-test</artifactId>
    <version>1.0</version>
    <packaging>war</packaging>
    <build>
        <extensions>
            <extension>
                <groupId>org.apache.maven.wagon</groupId>
                <artifactId>wagon-ssh</artifactId>
                <version>1.0-beta-6</version>
            </extension>
        </extensions>
        <plugins>
                <plugin>
                <artifactId>maven-antrun-plugin</artifactId>
                <version>1.5</version>
                <executions>
                    <execution>
                        <id>test-compile</id>
                        <phase>test-compile</phase>
                        <goals>
                            <goal>run</goal>
                        </goals>
                        <configuration>
                            <target>
                                <echo>Hello world!</echo>
                            </target>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.mortbay.jetty</groupId>
                <artifactId>maven-jetty-plugin</artifactId>
                <version>6.1.26</version>
                <executions>
                    <execution>
                        <id>start-webapp-for-module-tests</id>
                        <phase>test</phase>
                        <goals>
                            <goal>run</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>stop-webapp-for-module-tests</id>
                        <phase>prepare-package</phase>
                        <goals>
                            <goal>stop</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <daemon>true</daemon>
                    <stopPort>8181</stopPort>
                    <stopKey>stop-webapp</stopKey>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

一切正常，但maven-antrun-plugin (或测试编译阶段之前的任何其他插件)开始运行两次。我尝试使用run-war、run-exploaded或deploy-war目标。结果是一样的。

Maven输出：

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Building Unnamed - jetty-test:jetty-test:war:1.0
[INFO]    task-segment: [deploy]
[INFO] ------------------------------------------------------------------------
[INFO] [resources:resources {execution: default-resources}]
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /home/chardex/projects/untitled/jetty-test/src/main/resources
[INFO] [compiler:compile {execution: default-compile}]
[INFO] Nothing to compile - all classes are up to date
[INFO] [resources:testResources {execution: default-testResources}]
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /home/chardex/projects/untitled/jetty-test/src/test/resources
[INFO] [compiler:testCompile {execution: default-testCompile}]
[INFO] Nothing to compile - all classes are up to date
[INFO] [antrun:run {execution: test-compile}]
[INFO] Executing tasks

main:
     **[echo] Hello world!**
[INFO] Executed tasks
[INFO] [surefire:test {execution: default-test}]
[INFO] No tests to run.
[INFO] Preparing jetty:run
[WARNING] Removing: run from forked lifecycle, to prevent recursive invocation.
[INFO] [resources:resources {execution: default-resources}]
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /home/chardex/projects/untitled/jetty-test/src/main/resources
[INFO] [compiler:compile {execution: default-compile}]
[INFO] Nothing to compile - all classes are up to date
[INFO] [resources:testResources {execution: default-testResources}]
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] skip non existing resourceDirectory /home/chardex/projects/untitled/jetty-test/src/test/resources
[INFO] [compiler:testCompile {execution: default-testCompile}]
[INFO] Nothing to compile - all classes are up to date
[INFO] [antrun:run {execution: test-compile}]
[INFO] Executing tasks

main:
     **[echo] Hello world!**
[INFO] Executed tasks
[INFO] [jetty:run {execution: start-webapp-for-module-tests}]
[INFO] Configuring Jetty for project: Unnamed - jetty-test:jetty-test:war:1.0
[INFO] Webapp source directory = /home/chardex/projects/untitled/jetty-test/src/main/webapp
[INFO] Reload Mechanic: automatic
[INFO] Classes directory /home/chardex/projects/untitled/jetty-test/target/classes does not exist
2010-12-24 16:50:17.254:INFO::Logging to STDERR via org.mortbay.log.StdErrLog
[INFO] Context path = /jetty-test
[INFO] Tmp directory =  determined at runtime
[INFO] Web defaults = org/mortbay/jetty/webapp/webdefault.xml
[INFO] Web overrides =  none
[INFO] web.xml file = /home/chardex/projects/untitled/jetty-test/src/main/webapp/WEB-INF/web.xml
[INFO] Webapp directory = /home/chardex/projects/untitled/jetty-test/src/main/webapp
[INFO] Starting jetty 6.1.26 ...
2010-12-24 16:50:17.316:INFO::jetty-6.1.26
2010-12-24 16:50:17.416:INFO::No Transaction manager found - if your webapp requires one, please configure one.
[INFO] Started Jetty Server
[INFO] [jetty:stop {execution: stop-webapp-for-module-tests}]
2010-12-24 16:50:17.603:INFO::Started SelectChannelConnector@0.0.0.0:8080
[INFO] Stopping server 0
2010-12-24 16:50:17.637:INFO::Stopped SelectChannelConnector@0.0.0.0:8080
[INFO] [war:war {execution: default-war}]
[INFO] Packaging webapp
[INFO] Assembling webapp[jetty-test] in [/home/chardex/projects/untitled/jetty-test/target/jetty-test-1.0]
[INFO] Processing war project
[INFO] Copying webapp resources[/home/chardex/projects/untitled/jetty-test/src/main/webapp]
[INFO] Webapp assembled in[25 msecs]
[INFO] Building war: /home/chardex/projects/untitled/jetty-test/target/jetty-test-1.0.war
[INFO] [install:install {execution: default-install}]
...

我哪里错了？

谢谢。

Answer 1

根据documentation的说法，对于mvn jetty:run，

在Maven项目中就地使用此目标，而无需首先将项目组装成war，从而节省了开发周期中的时间。该插件派生了一个并行生命周期，以确保在调用Jetty之前“编译”阶段已经完成。这意味着你不需要首先显式地执行"mvn编译“。这也意味着"mvn clean jetty:run“将确保在调用Jetty之前完成完整的全新编译。

这就解释了这种行为。

Answer 2

应该有一个单独的目标，它做同样的事情，但不会分叉生命周期。当插件作为构建生命周期中的一个步骤运行时，不可能不执行编译阶段和所有其他阶段，因此所有内容都会运行两次。创建的错误：http://jira.codehaus.org/browse/JETTY-1365。Bug已作为副本移动到https://jira.codehaus.org/browse/JETTY-1405。他们说他们不能重现这个问题，需要一个特定的测试用例。不知道我什么时候能做到这一点，但是如果有人有一个简单的war项目，使用maven-jetty-plugin来演示这个问题，他们可以把它上传到JIRA票据上吗？