＆QUOT;无法创建任务或键入的antlib：org.apache.maven.artifact.ant：MVN＆QUOT;错误蚂蚁 [英] "Failed to create task or type antlib:org.apache.maven.artifact.ant:mvn" error in Ant

问题描述

Ant构建失败，而在的build.xml 运行Ant任务运行。我得到了在控制台中出现以下错误：

构建文件：F：\\ Eclipse项目\\ MY_PROJECT \\ build.xml文件
  [类型定义]无法加载从资源组织/阿帕奇/行家/神器/ ANT / antlib.xml定义。它不能被发现。构建失败
F：\\ MY_PROJECT \\的build.xml：32：问题：无法创建任务或键入的antlib：org.apache.maven.artifact.ant：MVN
原因：这个名字是不确定的。
操作：检查拼写。
操作：检查所有的自定义任务/类型已经被宣布。
操作：检查任何与LT; presetdef＆GT; /＆LT; macrodef＆GT;声明发生。
任何类型或任务已在此命名空间中定义还这似乎是一个的antlib声明。
操作：检查实施库中的一个存在：
        -F：\\日食\\插件\\ org.apache.ant_1.8.3.v20120321-1730 \\ lib中
        -C：\\用户\\幸运\\赵军阳张志利\\ lib中
        -a目录加入在命令行上与-lib论点


我把Maven的蚂蚁任务jar文件在Eclipse插件的文件夹，并在怀南特ANT_HOME / lib目录中，也包含在类路径。但它并没有解决我的问题和这个答案也未能解决问题。

解决方案

1. 在项目的根目录下创建一个 LIB 目录并放置的 Maven的蚂蚁tasks.jar 里面的文件。


2. 包含在的build.xml
import语句

 ＆LT;路径ID =Maven的蚂蚁tasks.classpathPATH =LIB / Maven的蚂蚁任务-2.1.3.jar/＆GT;
＆LT;的typedef资源=组织/阿帕奇/行家/神器/ ANT / antlib.xmlURI =的antlib：org.apache.maven.artifact.antclasspathref =Maven的蚂蚁tasks.classpath/＆GT;
 

以上步骤解决了我的问题。希望这是有益的人的未来。

替代解决方案，

• 您还可以将 Maven的蚂蚁tasks.jar 的下的文件ANT_HOME / lib目录文件夹来解决这个问题。


• 或者你可以有它的Eclipse插件文件夹下。
  如。 日食\\插件\\ org.apache.ant_1.8.3.v20120321-1730 \\ lib中

Ant build failed to run while running the ant tasks in build.xml. I got the following error in the console:

Buildfile: F:\Eclipse Projects\my_project\build.xml
  [typedef] Could not load definitions from resource org/apache/maven/artifact/ant/antlib.xml. It could not be found.

BUILD FAILED
F:\my_project\build.xml:32: Problem: failed to create task or type antlib:org.apache.maven.artifact.ant:mvn
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place.
No types or tasks have been defined in this namespace yet

This appears to be an antlib declaration. 
Action: Check that the implementing library exists in one of:
        -F:\eclipse\plugins\org.apache.ant_1.8.3.v20120321-1730\lib
        -C:\Users\Lucky\.ant\lib
        -a directory added on the command line with the -lib argument

I placed the maven-ant-tasks jar file in eclipse plugin's folder and in the WinAnt ANT_HOME/lib directory and also included in the classpath. But it didn't solve my problem and this answer also couldn't solve the issue.

解决方案

1. Create a lib directory in the root of your project and place the maven-ant-tasks.jar file inside it.
2. Include the import statement in your build.xml

<path id="maven-ant-tasks.classpath" path="lib/maven-ant-tasks-2.1.3.jar" />
<typedef resource="org/apache/maven/artifact/ant/antlib.xml" uri="antlib:org.apache.maven.artifact.ant" classpathref="maven-ant-tasks.classpath" />

The above steps solved my issue. Hope this is helpful to someone in the future.

Alternate solutions,

• You can also place the maven-ant-tasks.jar file under the ANT_HOME/lib folder to solve this issue.
• Or you could have it under the eclipse plugins folder.
  eg. eclipse\plugins\org.apache.ant_1.8.3.v20120321-1730\lib

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