包 org.apache.commons.io 不存在错误 [英] package org.apache.commons.io does not exist error

问题描述

我正在使用 ant 编译器编译一个 .java 文件.我收到以下错误包 org.apache.commons.io 不存在错误"

I am compiling a .java file using ant compiler. I am getting the following errror "package org.apache.commons.io does not exist error"

我下载了 apache Commons IO 二进制文件并将 .jar 文件粘贴到"C:\Program Files\Java\jdk1.7.0_51\lib\missioncontrol\plugins"

I downloaded the apache Commons IO binaries and pasted the .jar files in "C:\Program Files\Java\jdk1.7.0_51\lib\missioncontrol\plugins "

任何帮助.我需要修改我的构建 xml 文件的类路径吗?

Any help. Do I need to modify the classpath of my build xml file?

<target name="compile" description="Compile source code">
<mkdir dir="${build.dir}/classes"/>
 <javac includeantruntime="false"
    srcdir="src"
       destdir="${build.dir}/classes"
       classpathref="classpath"
       encoding="UTF8"
       debug="on"
       deprecation="on">
  <include name="**/*.java"/>
  <exclude name="**/NutchExample.java"/>
 </javac>

 <copy todir="${build.dir}/classes/lia/tools">
   <fileset dir="src/lia/tools" excludes="**/*.java"/>
 </copy>
</target>

推荐答案

我遇到了同样的问题然后意识到获得的 commons-io 版本低于我需要的版本 (2.4)....我需要如下覆盖已管理的版本以获取正确的版本:

I was having same issue then realized that the version of commons-io getting picked up was lower than what I need (2.4)....I need to Override the already managed version as below to get the right one picked up:

<dependency>
     <groupId>commons-io</groupId>
     <artifactId>commons-io</artifactId>
     <version>2.4</version>
 </dependency>

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