3招解决ant构建时任务找不到(taskdef cann't be found)的问题

2022-05-06 14:54:07

在用ant编译项目时，有时会碰到build.xml中所定义的任务找不到的问题：

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  1. [root@tivu25 test]# ant -f build.xml local_war
  2. Buildfile: build.xml

  4. local_war:

  6. BUILD FAILED
  7. /home/haoqf/software/APM/test/build.xml:18: taskdef class com.ibm.team.build.ant.task.LogPublisherTask cannot be found

  9. Total time: 0 seconds
这是因为ant在当前java的classpath中找不到类LogPublisherTask（LogPublisherTask由 org.apache.tools.ant.Task派生而来），这时候需要重新指定当前的classpath，让它包含LogPublisherTask所属jar库或者class的路径。有三种方法：
1. 在ant命令行指定：

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  1. [root@tivu25 test]# ant -f build.xml local_war -lib /home/haoqf/software/RTC/RTC-BuildSystem-Toolkit-Linux-3.0iFix1/jazz/buildsystem/buildtoolkit/
2. 在build.xml指定：

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  1. ?xml version="1.0" encoding="UTF-8"?>

  3. project name="BVT_CVT" default="local_war">
  4.     
  5.      target name="local_war">
  6.         taskdef name="logPublisher" classname="com.ibm.team.build.ant.task.LogPublisherTask">
  7.         classpath>
  8.             pathelement location="/home/haoqf/software/RTC/RTC-BuildSystem-Toolkit-Linux-3.0iFix1/jazz/buildsystem/buildtoolkit/"/>
  9.             fileset dir="/home/haoqf/software/RTC/RTC-BuildSystem-Toolkit-Linux-3.0iFix1/jazz/buildsystem/buildtoolkit/">
  10.                 include name="**/*.jar"/>
  11.             /fileset>
  12.         /classpath>
  13.         /taskdef>
  14.     
  15.         logPublisher repositoryAddress="${repositoryAddress}"    />

  17.      /target>
  18. /project>
3. 设定当前环境变量CLASSPATH：

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  1. [root@tivu25 test]# export CLASSPATH=$CLASSPATH:/home/haoqf/software/RTC/RTC-BuildSystem-Toolkit-Linux-3.0iFix1/jazz/buildsystem/buildtoolkit/com.ibm.team.build.toolkit_2.2.0.v20110308_0258.jar
其中com.ibm.team.build.toolkit_2.2.0.v20110308_0258.jar包含了类LogPublisherTask的实现。





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