这与 . 我正在尝试用 Grape 动态添加 maven-ant-tasks jar,模拟这个:
<taskdef uri="antlib:org.apache.maven.artifact.ant"
resource="org/apache/maven/artifact/ant/antlib.xml"
classpathref="ant.classpath" />
我尝试使用 Grape.grab() 使 AntBuilder 可以使用 maven-ant-tasks,如下所示:
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" )
但这不起作用,因为 Grape 将模块添加到与 ANT 引擎正在使用的不同的 ClassLoader 中。所以,我从这个 AntBuilder 类路径问题中得到了建议,让 Grape 使用根 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" )
现在它抛出一个 LinkageError:
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)
关于让它发挥作用的任何提示?或者,整件事是个坏主意?