包 org.apache.commons.io 不存在错误

Question

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

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

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>

Answer 1

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>

Answer 2

I also faced the same issue, but after adding dependency in pom error got removed.

<dependency>
    <groupId>commons-io</groupId>
    <artifactId>commons-io</artifactId>
    <version>2.6</version>
</dependency>

you can also refer URL http://zetcode.com/java/fileutils/

Answer 3

前往： http ://commons.apache.org/proper/commons-io/download_io.cgi 下载：commons-io-2.4-bin.zip 解压并在commons-io-2.4文件夹中找到commons-io-2.4.jar

Answer 4

尝试在外部添加jar， 这里 。