包含包含.jars的libs文件夹进行编译

Question

I have the following file structure:

ServerCode <- src , libs, bin

I am trying to compile all the code in src. Src has a couple of .java files at the top level and sub-directories. libs contains all the .jar files which are required to build my project.

I wrote the following build.xml but when I try to compile it, the compiler throws errors cannot find symbol errors for the libraries I am including.

<project default="compile">
    <target name="compile">
        <mkdir dir="bin"/>
        <javac srcdir="src" destdir="bin" classpath="libs/*.jar">
    </target>
</project>

Answer 1

Define class path to include all jars like this

<target name="compile" depends=""   description="compile the java source files">  
   <javac srcdir="." destdir="${build}">  
        <classpath>  
            <fileset dir="${lib}">  
                <include name="**/*.jar" />  
            </fileset>  
            <fileset dir="${test_lib}">  
                <include name="**/*.jar" />  
            </fileset>  
        </classpath>  
    </javac>  

Answer 2

I don't think you can use a pattern in the classpath attribute. I could be wrong about this. You should run ant in verbose mode (the -v option) to see how it's using your classpath attribute. I suspect it's passing it to javac as a literal string.

Here's what I do:

<javac target="${javac.target}" source="${javac.source}" destdir="${validator.output.dir}" debug="on"
       nowarn="off"
       memorymaximumsize="128m" fork="true">
    <classpath refid="validator.module.production.classpath"/>
    <src>
        <dirset dir="Validator">
            <include name="src"/>
        </dirset>
    </src>
</javac>

...

<path id="validator.module.production.classpath">
    <fileset dir="Validator/lib/-validator" includes="**/*.jar"/>
</path>

Some of this code is generated by my IDE so it's a little verbose, but you get the idea.

Answer 3

Try this as mentioned at http://ant.apache.org/manual/using.html instead of giving classPath attribute alongwith javac

  <classpath>
      <pathelement location="libs/*.jar"/>
    </classpath>

There are other ways also which you can glance thru the link mentioned above