其中包括一个新的jar文件外部JAR档案建立与蚂蚁 [英] Including external jar-files in a new jar-file build with Ant

问题描述

我刚刚'继承'一个Java项目，而不是从一个Java的背景我有点有时失去了未来。 Eclipse是用来调试和开发过程中运行应用程序。我已经通过Eclipse中成功地创造一个.jar文件即包括所有必要的外部罐子像Log4J的，XMLRPC服务器等，这大的.jar然后可以用成功运行：

I have just 'inherited' a Java-project and not coming from a Java-background I am a little lost at times. Eclipse is used to debug and run the application during development. I have through Eclipse succeeded in creating a .jar-file that 'includes' all the required external jars like Log4J, xmlrpc-server, etc. This big .jar can then be run successfully using:

java -jar myjar.jar

我的下一个步骤是自动构建使用Ant（1.7.1版本），所以我没有涉及的Eclipse做构建和部署。这已被证明是一个挑战，因为我缺乏的Java知识。该项目的根是这样的：

My next step is to automate builds using Ant (version 1.7.1) so I don't have to involve Eclipse to do builds and deployment. This has proven to be a challenge due to my lacking java-knowledge. The root of the project looks like this:

|-> jars (where external jars have been placed)
|-> java
| |-> bin (where the finished .class / .jars are placed)
| |-> src (Where code lives)
| |-> ++files like build.xml etc
|-> sql (you guessed it; sql! )

我的build.xml文件包含以下内容：

My build.xml contains the following:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project basedir="." default="build" name="Seraph">
    <property environment="env"/>
    <property name="debuglevel" value="source,lines,vars"/>
    <property name="target" value="1.6"/>
    <property name="source" value="1.6"/>

    <property name="build.dir"     value="bin"/>
    <property name="src.dir"       value="src"/>
    <property name="lib.dir"       value="../jars"/>
    <property name="classes.dir"   value="${build.dir}/classes"/>
    <property name="jar.dir"       value="${build.dir}/jar"/>
    <property name="jar.file"      value="${jar.dir}/seraph.jar"/>
    <property name="manifest.file" value="${jar.dir}/MANIFEST.MF"/>

    <property name="main.class" value="no.easyconnect.seraph.core.SeraphCore"/>

    <path id="external.jars">
        <fileset dir="${lib.dir}" includes="**/*.jar"/>
    </path>

    <path id="project.classpath">
        <pathelement location="${src.dir}"/>
        <path refid="external.jars" />
    </path>

    <target name="init">
        <mkdir dir="${build.dir}"/>
        <mkdir dir="${classes.dir}"/>
        <mkdir dir="${jar.dir}"/>
        <copy includeemptydirs="false" todir="${build.dir}">
            <fileset dir="${src.dir}">
                <exclude name="**/*.launch"/>
                <exclude name="**/*.java"/>
            </fileset>
        </copy>
    </target>

    <target name="clean">
        <delete dir="${build.dir}"/>
    </target>

    <target name="cleanall" depends="clean"/>

    <target name="build" depends="init">
        <echo message="${ant.project.name}: ${ant.file}"/>
        <javac debug="true" debuglevel="${debuglevel}" destdir="bin" source="${source}" target="${target}" classpathref="project.classpath">
            <src path="${src.dir}"/>
        </javac>
    </target>

    <target name="build-jar" depends="build">
        <delete file="${jar.file}" />
        <delete file="${manifest.file}" />

        <manifest file="${manifest.file}" >
            <attribute name="built-by" value="${user.name}" />
            <attribute name="Main-Class" value="${main.class}" />
        </manifest>

        <jar destfile="${jar.file}" 
            basedir="${build.dir}" 
            manifest="${manifest.file}">
            <fileset dir="${classes.dir}" includes="**/*.class" />
            <fileset dir="${lib.dir}" includes="**/*.jar" />
        </jar>
    </target>
</project>

我然后运行：
    蚂蚁干净构建-JAR

I then run: ant clean build-jar

和一个名为seraph.jar文件放置在java / bin中/罐的目录。然后，我尝试使用以下命令来运行这个jar：
    Java的罐子斌/ JAR / seraph.jar

and a file named seraph.jar is placed in the java/bin/jar-directory. I then try to run this jar using the following command: java -jar bin/jar/seraph.jar

结果是这样的输出在控制台

The result is this output at the console:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/log4j/Logger
    at no.easyconnect.seraph.core.SeraphCore.<clinit>(SeraphCore.java:23)
Caused by: java.lang.ClassNotFoundException: org.apache.log4j.Logger
    at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
    at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
    ... 1 more
Could not find the main class: no.easyconnect.seraph.core.SeraphCore. Program will exit.

我怀疑我做了一些在build.xml文件令人惊讶的愚蠢和花了两天试图上的配置变化的大部分时间，都无济于事。在得到这个工作的帮助是很大的AP preciated。

I suspect that I have done something amazingly silly in the build.xml-file and have spent the better part of two days trying variations on the configuration, to no avail. Any help on getting this working is greatly appreciated.

哦，对不起，如果我留下了一些重要的信息了。这是我第一次在这里发帖的SO。

Oh, and I'm sorry if I left some crucial information out. This is my first time posting here at SO.

推荐答案

随着有用的建议人，我开始钻研一罐子。一些死角（有些结果是完全像我的previous结果后，我设法得到它的工作。对于其他人参考，我列出了为我工作的build.xml文件。

With the helpful advice from people who have answered here I started digging into One-Jar. After some dead-ends (and some results that were exactly like my previous results I managed to get it working. For other peoples reference I'm listing the build.xml that worked for me.

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project basedir="." default="build" name="<INSERT_PROJECT_NAME_HERE>">
    <property environment="env"/>
    <property name="debuglevel" value="source,lines,vars"/>
    <property name="target" value="1.6"/>
    <property name="source" value="1.6"/>

    <property name="one-jar.dist.dir" value="../onejar"/>
    <import file="${one-jar.dist.dir}/one-jar-ant-task.xml" optional="true" />

    <property name="src.dir"          value="src"/>
    <property name="bin.dir"          value="bin"/>
    <property name="build.dir"        value="build"/>
    <property name="classes.dir"      value="${build.dir}/classes"/>
    <property name="jar.target.dir"   value="${build.dir}/jars"/>
    <property name="external.lib.dir" value="../jars"/>
    <property name="final.jar"        value="${bin.dir}/<INSERT_NAME_OF_FINAL_JAR_HERE>"/>

    <property name="main.class"       value="<INSERT_MAIN_CLASS_HERE>"/>

    <path id="project.classpath">
        <fileset dir="${external.lib.dir}">
            <include name="*.jar"/>
        </fileset>
    </path>

    <target name="init">
        <mkdir dir="${bin.dir}"/>
        <mkdir dir="${build.dir}"/>
        <mkdir dir="${classes.dir}"/>
        <mkdir dir="${jar.target.dir}"/>
        <copy includeemptydirs="false" todir="${classes.dir}">
            <fileset dir="${src.dir}">
                <exclude name="**/*.launch"/>
                <exclude name="**/*.java"/>
            </fileset>
        </copy>
    </target>

    <target name="clean">
        <delete dir="${build.dir}"/>
        <delete dir="${bin.dir}"/>
    </target>

    <target name="cleanall" depends="clean"/>

    <target name="build" depends="init">
        <echo message="${ant.project.name}: ${ant.file}"/>
        <javac debug="true" debuglevel="${debuglevel}" destdir="${classes.dir}" source="${source}" target="${target}">
            <src path="${src.dir}"/>
            <classpath refid="project.classpath"/>   
        </javac>
    </target>

    <target name="build-jar" depends="build">
        <delete file="${final.jar}" />
        <one-jar destfile="${final.jar}" onejarmainclass="${main.class}">
            <main>
                <fileset dir="${classes.dir}"/>
            </main>
            <lib>
                <fileset dir="${external.lib.dir}" />
            </lib>
        </one-jar>
    </target>
</project>

我希望别人能够从中受益。

I hope someone else can benefit from this.

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