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Eclipse中使用Ant來運行Junit的錯誤及解決方法

今天在試著在eclipse中使用Ant來運行JUnit進行單元測試時彈出如下錯誤提示,但在外部窗口執行Ant時不會出現

BUILD FAILED
D:\EclipseWorkSpace\message\build.xml:11: Could not create task or type of type: junit.

Ant could not find the task or a class this task relies upon.

This is common and has a number of causes; the usual
solutions are to read the manual pages then download and
install needed JAR files, or fix the build file:
- You have misspelt 'junit'.
   Fix: check your spelling.
- The task needs an external JAR file to execute
     and this is not found at the right place in the classpath.
   Fix: check the documentation for dependencies.
   Fix: declare the task.
- The task is an Ant optional task and the JAR file and/or libraries
     implementing the functionality were not found at the time you
     yourself built your installation of Ant from the Ant sources.
   Fix: Look in the ANT_HOME/lib for the 'ant-' JAR corresponding to the
     task and make sure it contains more than merely a META-INF/MANIFEST.MF.
     If all it contains is the manifest, then rebuild Ant with the needed
     libraries present in ${ant.home}/lib/optional/ , or alternatively,
     download a pre-built release version from apache.org
- The build file was written for a later version of Ant
   Fix: upgrade to at least the latest release version of Ant
- The task is not an Ant core or optional task
     and needs to be declared using <taskdef>.
- You are attempting to use a task defined using
    <presetdef> or <macrodef> but have spelt wrong or not
   defined it at the point of use

Remember that for JAR files to be visible to Ant tasks implemented
in ANT_HOME/lib, the files must be in the same directory or on the
classpath

Please neither file bug reports on this problem, nor email the
Ant mailing lists, until all of these causes have been explored,
as this is not an Ant bug.

按著錯誤提示將JUnit.jar放在ANT_HOME/lib中還是同樣出現上述錯誤提示

這是因為<junit>任務在ant中是一個optinal task,非core task,需要junit.jar支持

解決方法:在window --> preferences --> Ant --> Runtime --> Classpath中選擇Global Entries,然后添加JUnit.jar文件即可,以便eclipse在運行ant任務時會加載junit.jar,這樣就可以解決上述問題現象,其實這里也可以將JUnit.jar文件放在Ant Home Entries,但這樣有可能造成與Ant本身包的混淆.


ok

posted on 2007-07-19 22:41 紙飛機閱讀(2051) 評論(3) 編輯收藏

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