2011-04-21 106 views
8

我從鏈路>IVY Build link下載的build.xml,當我運行Ant目標,我收到以下錯誤:爲元素的前綴「常春藤」,「常青藤:cachepath」未綁定

\build.xml:92: The prefix "ivy" for element "ivy:cachepath" is not bound.

構建.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> 

這裏有什麼問題?

Cannot view XML input using XSL style sheet. Please correct the error and then click the Refresh button, or try again later. 
--------------------------------------------------------------------------------  
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"/> 
+0

我在cmd中運行以下命令,但沒有用,同樣的錯誤。 >%windir%\ Microsoft.NET \ Framework \ v2.0.50727 \ aspnet_regiis.exe -i – bekur 2011-04-21 10:32:11

回答

12

您需要註冊/綁定常春藤前綴:當我嘗試在IE中打開build.xml文件,因爲它提供了錯誤信息

<project name="go-ivy" xmlns:ivy="antlib:org.apache.ivy.ant"> 

以下是Apache常春藤的文檔(http://ant.apache.org/ivy/history/latest-milestone/ant.html ):

If you use ant version 1.6.0 or superior, you just have to add ivy namespace to your project (xmlns:ivy="antlib:org.apache.ivy.ant" attribute of your project tag), and you can call ivy tasks.

+0

你的答案幫助我解決了同樣的問題,但是可以添加一些關於它爲什麼需要的描述? – Mateen 2015-03-11 11:05:17

+0

@mateen https://ant.apache.org/manual/Types/namespace.html – Jesse 2015-10-08 14:28:18