這與此有關。我試圖動態地添加與葡萄的Maven的螞蟻任務罈子裏,模擬這樣的:Groovy + Antbuilder:如何使用Grape來配合taskdef?
<taskdef uri="antlib:org.apache.maven.artifact.ant"
resource="org/apache/maven/artifact/ant/antlib.xml"
classpathref="ant.classpath" />
我試着使用Grape.grab()讓Maven螞蟻任務提供給AntBuilder這樣:
import groovy.grape.Grape
println "grab..."
Grape.grab(group:'ant', module:'ant', version:'1.7.0', classLoader:this.class.classLoader.rootLoader)
Grape.grab(group: 'org.apache.maven', module: 'maven-ant-tasks', version: '2.0.9')
println "ant taskdef..."
def ant = new AntBuilder()
ant.taskdef (resource: "org/apache/maven/artifact/ant/antlib.xml")
但是,這並不工作,因爲葡萄添加模塊從ANT引擎使用一個不同的類加載器。於是,我從this AntBuilder classpath question了意見,並作了葡萄用root的ClassLoader:
import groovy.grape.Grape
println "grab..."
Grape.grab(group:'ant', module:'ant', version:'1.7.0', classLoader:this.class.classLoader.rootLoader)
Grape.grab(group: 'org.apache.maven', module: 'maven-ant-tasks', version: '2.0.9', classLoader: this.class.classLoader.rootLoader)
println "ant taskdef..."
def ant = new AntBuilder()
ant.taskdef (resource: "org/apache/maven/artifact/ant/antlib.xml")
現在拋出的LinkageError類:
Caught: : java.lang.LinkageError: loader constraint violation: when resolving overridden method "org.apache.tools.ant.helper.ProjectHelper2$RootHandler.setDocumentLocator(Lorg/xml/sax/Locator;)V" the class loader (instance of org/codehaus/groovy/tools/RootLoader) of the current class, org/apache/tools/ant/helper/ProjectHelper2$RootHandler, and its superclass loader (instance of <bootloader>), have different Class objects for the type org/xml/sax/Locator used in the signature
at test.mavenanttasks.run(mavenanttasks.groovy:11)
上得到這個工作的任何提示?或者,整個事情是一個壞主意?