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我从链路>IVY Build link下载的build.xml，当我运行Ant目标，我收到以下错误：为元素的前缀“常春藤”，“常青藤：cachepath”未绑定
\build.xml:92: The prefix "ivy" for element "ivy:cachepath" is not bound.
构建.xml文件：
<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
-->
<project name="go-ivy" default="go">
<!--
this build file is a self contained project: it doesn't require anything else
that ant 1.6.2 or greater and java 1.4 or greater properly installed.
It is used to showcase how easy and straightforward it can be to use Ivy.
This is not an example of the best pratice to use in a project, especially
for the java source code "generation" :-) (see generate-src target)
To run copy this file in an empty directory, open a shell or a command window
in this directory and run "ant". It will download ivy and then use it to resolve
the dependency of the class which is itself "contained" in this build script.
After a successful build run "ant" again and you will see the build will be
much faster.
More information can be found at http://ant.apache.org/ivy/
-->
<!--
here is the version of ivy we will use. change this property to try a newer
version if you want
-->
<property name="ivy.install.version" value="2.0.0-beta1"/>
<property name="ivy.jar.dir" value="${basedir}/ivy"/>
<property name="ivy.jar.file" value="${ivy.jar.dir}/ivy.jar"/>
<property name="build.dir" value="build"/>
<property name="src.dir" value="src"/>
<target name="download-ivy" unless="skip.download">
<mkdir dir="${ivy.jar.dir}"/>
<!--
download Ivy from web site so that it can be used even without any special installation
-->
<echo message="installing ivy..."/>
<get src="http://repo1.maven.org/maven2/org/apache/ivy/ivy/${ivy.install.version}/ivy-${ivy.install.version}.jar" dest="${ivy.jar.file}" usetimestamp="true"/>
</target>
<!--
=================================
target: install-ivy
this target is not necessary if you put ivy.jar in your ant lib directory
if you already have ivy in your ant lib, you can simply remove this
target and the dependency the 'go' target has on it
=================================
-->
<target name="install-ivy" depends="download-ivy" description="--> install ivy">
<!--
try to load ivy here from local ivy dir, in case the user has not already dropped
it into ant's lib dir (note that the latter copy will always take precedence).
We will not fail as long as local lib dir exists (it may be empty) and
ivy is in at least one of ant's lib dir or the local lib dir.
-->
<path id="ivy.lib.path">
<fileset dir="${ivy.jar.dir}" includes="*.jar"/>
</path>
<taskdef resource="org/apache/ivy/ant/antlib.xml" uri="antlib:org.apache.ivy.ant" classpathref="ivy.lib.path"/>
</target>
<!--
=================================
target: go
Go ivy, go!
=================================
-->
<target name="go" depends="install-ivy, generate-src" description="--> resolve dependencies, compile and run the project">
<echo message="using ivy to resolve commons-lang 2.1..."/>
<!--
here comes the magic line: asks ivy to resolve a dependency on
commons-lang 2.1 and to build an ant path with it from its cache
-->
<ivy:cachepath organisation="commons-lang" module="commons-lang" revision="2.1" pathid="lib.path.id" inline="true"/>
<echo message="compiling..."/>
<mkdir dir="${build.dir}"/>
<javac srcdir="${src.dir}" destdir="${build.dir}" classpathref="lib.path.id"/>
<echo>
</echo>
<java classname="example.Hello">
<classpath>
<path refid="lib.path.id"/>
<path location="${build.dir}"/>
</classpath>
</java>
</target>
<!--
=================================
target: generate-src
'Generates' the class source. It actually just echo a simple java
source code to a file. In real life this file would already be
present on your file system, and this target wouldn't be necessary.
=================================
-->
<target name="generate-src">
<mkdir dir="${src.dir}/example"/>
<echo file="${src.dir}/example/Hello.java">
package example;
import org.apache.commons.lang.WordUtils;
public class Hello {
public static void main(String[] args) {
String message = "hello ivy !";
System.out.println("standard message : " + message);
System.out.println("capitalized by " + WordUtils.class.getName()
+ " : " + WordUtils.capitalizeFully(message));
}
}
</echo>
</target>
<!--
=================================
target: clean
=================================
-->
<target name="clean" description="--> clean the project">
<delete includeemptydirs="true" quiet="true">
<fileset dir="${src.dir}"/>
<fileset dir="${build.dir}"/>
</delete>
</target>
<!--
=================================
target: clean-ivy
=================================
-->
<target name="clean-ivy" description="--> clean the ivy installation">
<delete dir="${ivy.jar.dir}"/>
</target>
<!--
=================================
target: clean-cache
=================================
-->
<target name="clean-cache" depends="install-ivy" description="--> clean the ivy cache">
<ivy:cleancache/>
</target>
</project>
这里有什么问题？
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--------------------------------------------------------------------------------
The operation completed successfully. Error processing resource 'file:///C:/ivy/build.xml'. Line 92, Position 117
<ivy:cachepath organisation="commons-lang" module="commons-lang" revision="2.1" pathid="lib.path.id" inline="true"/>
我在cmd中运行以下命令，但没有用，同样的错误。 >％windir％\ Microsoft.NET \ Framework \ v2.0.50727 \ aspnet_regiis.exe -i – bekur 2011-04-21 10:32:11