我正在尝试使用 Ant、Ivy 和 JUnit 获得一个简单的(？)测试项目。基本思想是 Ivy 将下载 junit.jar，然后 Ant 将使用它。
请注意，junit jar 位于类路径上，因为否则(在 junit 任务中没有 classpath 元素)我看到“ 的 必须包含 junit.jar，如果不在 Ant 自己的类路径中”。此外，下面给出的类 (junit.framework.TestListener) 位于 junit-4.8.2.jar 中。
但是，当我在以下内容上尝试 ant test 时，我看到:
test:
BUILD FAILED
/home/andrew/project/guice/hg/build.xml:33: java.lang.NoClassDefFoundError: junit/framework/TestListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
...
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
Caused by: java.lang.ClassNotFoundException: junit.framework.TestListener
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
...
所以我猜我的 build.xml 有问题？什么？
这是 build.xml:
<project xmlns:ivy="antlib:org.apache.ivy.ant"
name="java-example" default="dist" basedir=".">
<description>
simple example build file
</description>
<property name="src" location="src"/>
<property name="build" location="build"/>
<property name="dist" location="dist"/>
<property name="lib" location="lib"/>
<path id="lib.path">
<fileset dir="${lib}"/>
</path>
<target name="init">
<tstamp/>
<mkdir dir="${build}"/>
</target>
<target name="compile" depends="init,resolve"
description="compile the source">
<javac srcdir="${src}" destdir="${build}" classpathref="lib.path"
includeantruntime="false">
<compilerarg value="-Xlint"/>
</javac>
</target>
<target name="test" depends="compile"
description="run the tests">
<junit>
<classpath refid="lib.path"/>
<batchtest>
<fileset dir="${build}">
<include name="**/*Test.class"/>
</fileset>
</batchtest>
</junit>
</target>
<target name="dist" depends="compile"
description="generate the distribution">
<mkdir dir="${dist}/lib"/>
<jar jarfile="${dist}/lib/example-${DSTAMP}.jar" basedir="${build}"/>
</target>
<target name="clean"
description="clean up">
<delete dir="${build}"/>
<delete dir="${dist}"/>
</target>
<target name="resolve"
description="download required dependencies">
<ivy:retrieve/>
</target>
</project>
以及编译后的现有目录结构:
.
├── build
│ └── com
│ └── isti
│ └── example
│ ├── AppendToList.class
│ ├── DumpToStdout.class
│ ├── LimitedCounter.class
│ ├── MessageSink.class
│ ├── MessageSource.class
│ └── SinkToSourceTest.class
├── build.xml
├── dist
│ └── lib
│ └── example-20130412.jar
├── ivy.xml
├── lib
│ ├── junit-4.8.2.jar
│ ├── junit-4.8.2-javadoc.jar
│ └── junit-4.8.2-sources.jar
├── README.md
└── src
├── main
│ └── java
│ └── com
│ └── isti
│ └── example
│ ├── AppendToList.java
│ ├── DumpToStdout.java
│ ├── LimitedCounter.java
│ ├── MessageSink.java
│ └── MessageSource.java
└── test
└── java
└── com
└── isti
└── example
└── SinkToSourceTest.java
更新 顺便说一句，
ant -lib lib test(明确给出 lib 目录)有效。并且在随机网络搜索结果中对此处理的处理有很多令人困惑的描述 - 但我的印象是上述方法与 latest docs 一致(我使用的是 ant 1.9) - 见第 5 点。所以我想这可能是一个 bug ; bug 。 最佳答案
例子
项目包含以下文件:
├── build.xml
├── ivy.xml
└── src
├── main
│ ├── java
│ │ └── org
│ │ └── demo
│ │ └── App.java
│ └── resources
│ └── log4j.properties
└── test
└── java
└── org
└── demo
└── AppTest.java
构建运行如下:
$ ant
Buildfile: /home/mark/Files/Dev/ivy/demo/build.xml
resolve:
[ivy:resolve] :: Apache Ivy 2.3.0 - 20130110142753 :: http://ant.apache.org/ivy/ ::
[ivy:resolve] :: loading settings :: url = jar:file:/home/mark/.ant/lib/ivy.jar!/org/apache/ivy/core/settings/ivysettings.xml
[ivy:resolve] :: resolving dependencies :: com.myspotontheweb#demo;working@mark-Lemur-Ultra
[ivy:resolve] confs: [compile, runtime, test]
[ivy:resolve] found org.slf4j#slf4j-api;1.7.5 in public
[ivy:resolve] found org.slf4j#slf4j-log4j12;1.7.5 in public
[ivy:resolve] found log4j#log4j;1.2.17 in public
[ivy:resolve] found junit#junit;4.11 in public
[ivy:resolve] found org.hamcrest#hamcrest-core;1.3 in public
[ivy:resolve] :: resolution report :: resolve 347ms :: artifacts dl 14ms
---------------------------------------------------------------------
| | modules || artifacts |
| conf | number| search|dwnlded|evicted|| number|dwnlded|
---------------------------------------------------------------------
| compile | 1 | 0 | 0 | 0 || 1 | 0 |
| runtime | 3 | 0 | 0 | 0 || 3 | 0 |
| test | 5 | 0 | 0 | 0 || 5 | 0 |
---------------------------------------------------------------------
[ivy:report] Processing /home/mark/.ivy2/cache/com.myspotontheweb-demo-compile.xml to /home/mark/Files/Dev/ivy/demo/build/ivy-reports/com.myspotontheweb-demo-compile.html
[ivy:report] Processing /home/mark/.ivy2/cache/com.myspotontheweb-demo-runtime.xml to /home/mark/Files/Dev/ivy/demo/build/ivy-reports/com.myspotontheweb-demo-runtime.html
[ivy:report] Processing /home/mark/.ivy2/cache/com.myspotontheweb-demo-test.xml to /home/mark/Files/Dev/ivy/demo/build/ivy-reports/com.myspotontheweb-demo-test.html
resources:
[copy] Copying 1 file to /home/mark/Files/Dev/ivy/demo/build/classes
compile:
[javac] Compiling 1 source file to /home/mark/Files/Dev/ivy/demo/build/classes
compile-tests:
[mkdir] Created dir: /home/mark/Files/Dev/ivy/demo/build/test-classes
[javac] Compiling 1 source file to /home/mark/Files/Dev/ivy/demo/build/test-classes
test:
[mkdir] Created dir: /home/mark/Files/Dev/ivy/demo/build/test-reports
[junit] Running org.demo.AppTest
[junit] Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 0.085 sec
build:
[ivy:retrieve] :: retrieving :: com.myspotontheweb#demo
[ivy:retrieve] confs: [runtime]
[ivy:retrieve] 3 artifacts copied, 0 already retrieved (512kB/16ms)
[jar] Building jar: /home/mark/Files/Dev/ivy/demo/build/dist/demo.jar
BUILD SUCCESSFUL
Total time: 4 seconds
Ivy .xml
ivy 的一个非常强大的特性是 configurations 。这些允许您将依赖项组合在一起。
<ivy-module version="2.0">
<info organisation="com.myspotontheweb" module="demo"/>
<configurations>
<conf name="compile" description="Required to compile application"/>
<conf name="runtime" description="Additional run-time dependencies" extends="compile"/>
<conf name="test" description="Required for test only" extends="runtime"/>
</configurations>
<dependencies>
<!-- compile dependencies -->
<dependency org="org.slf4j" name="slf4j-api" rev="1.7.5" conf="compile->default"/>
<!-- runtime dependencies -->
<dependency org="org.slf4j" name="slf4j-log4j12" rev="1.7.5" conf="runtime->default"/>
<!-- test dependencies -->
<dependency org="junit" name="junit" rev="4.11" conf="test->default"/>
</dependencies>
</ivy-module>
笔记:
构建文件
cachepath(创建 ANT 路径)和 retrieve(将文件复制到您的构建中)等任务可以利用 Ivy 配置。
我还建议使用 report 目标，以便您可以查看每个配置中出现哪些 jar(有助于管理传递依赖项)
<project name="demo" default="build" xmlns:ivy="antlib:org.apache.ivy.ant">
<!--
================
Build properties
================
-->
<property name="src.dir" location="src/main/java"/>
<property name="resources.dir" location="src/main/resources"/>
<property name="test.src.dir" location="src/test/java"/>
<property name="build.dir" location="build"/>
<property name="classes.dir" location="${build.dir}/classes"/>
<property name="test.classes.dir" location="${build.dir}/test-classes"/>
<property name="ivy.reports.dir" location="${build.dir}/ivy-reports"/>
<property name="test.reports.dir" location="${build.dir}/test-reports"/>
<property name="dist.dir" location="${build.dir}/dist"/>
<property name="jar.main.class" value="org.demo.App"/>
<property name="jar.file" value="${dist.dir}/${ant.project.name}.jar"/>
<available classname="org.apache.ivy.Main" property="ivy.installed"/>
<!--
===========
Build setup
===========
-->
<target name="install-ivy" description="Install ivy" unless="ivy.installed">
<mkdir dir="${user.home}/.ant/lib"/>
<get dest="${user.home}/.ant/lib/ivy.jar" src="http://search.maven.org/remotecontent?filepath=org/apache/ivy/ivy/2.3.0/ivy-2.3.0.jar"/>
<fail message="Ivy has been installed. Run the build again"/>
</target>
<target name="resolve" depends="install-ivy" description="Use ivy to resolve classpaths">
<ivy:resolve/>
<ivy:report todir='${ivy.reports.dir}' graph='false' xml='false'/>
<ivy:cachepath pathid="compile.path" conf="compile"/>
<ivy:cachepath pathid="test.path" conf="test"/>
</target>
<!--
===============
Compile targets
===============
-->
<target name="resources" description="Copy resources into classpath">
<copy todir="${classes.dir}">
<fileset dir="${resources.dir}"/>
</copy>
</target>
<target name="compile" depends="resolve,resources" description="Compile code">
<mkdir dir="${classes.dir}"/>
<javac srcdir="${src.dir}" destdir="${classes.dir}" includeantruntime="false" debug="true" classpathref="compile.path"/>
</target>
<target name="compile-tests" depends="compile" description="Compile tests">
<mkdir dir="${test.classes.dir}"/>
<javac srcdir="${test.src.dir}" destdir="${test.classes.dir}" includeantruntime="false" debug="true">
<classpath>
<path refid="test.path"/>
<pathelement path="${classes.dir}"/>
</classpath>
</javac>
</target>
<!--
============
Test targets
============
-->
<target name="test" depends="compile-tests" description="Run unit tests">
<mkdir dir="${test.reports.dir}"/>
<junit printsummary="yes" haltonfailure="yes">
<classpath>
<path refid="test.path"/>
<pathelement path="${classes.dir}"/>
<pathelement path="${test.classes.dir}"/>
</classpath>
<formatter type="xml"/>
<batchtest fork="yes" todir="${test.reports.dir}">
<fileset dir="${test.src.dir}">
<include name="**/*Test*.java"/>
<exclude name="**/AllTests.java"/>
</fileset>
</batchtest>
</junit>
</target>
<!--
=====================
Build and run targets
=====================
-->
<target name="build" depends="test" description="Create executable jar archive">
<ivy:retrieve pattern="${dist.dir}/lib/[artifact]-[revision](-[classifier]).[ext]" conf="runtime"/>
<manifestclasspath property="jar.classpath" jarfile="${jar.file}">
<classpath>
<fileset dir="${dist.dir}/lib" includes="*.jar"/>
</classpath>
</manifestclasspath>
<jar destfile="${jar.file}" basedir="${classes.dir}">
<manifest>
<attribute name="Main-Class" value="${jar.main.class}" />
<attribute name="Class-Path" value="${jar.classpath}" />
</manifest>
</jar>
</target>
<target name="run" depends="build" description="Run code">
<java jar="${jar.file}" fork="true"/>
</target>
<!--
=============
Clean targets
=============
-->
<target name="clean" description="Cleanup build files">
<delete dir="${build.dir}"/>
</target>
<target name="clean-all" depends="clean" description="Additionally purge ivy cache">
<ivy:cleancache/>
</target>
</project>
笔记:
应用程序.java
Hello World 日志示例。
package org.demo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Hello world!
*
*/
public class App {
static final Logger log = LoggerFactory.getLogger(App.class);
public static void main( String[] args ) {
App a = new App();
a.speak("hello world");
}
public void speak(String message) {
log.info(message);
}
}
应用测试程序
这是我文件中的一个老例子。不使用 Junit 断言。
ackage org.demo;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Unit test for simple App.
*/
public class AppTest
extends TestCase
{
/**
* Create the test case
*
* @param testName name of the test case
*/
public AppTest( String testName )
{
super( testName );
}
/**
* @return the suite of tests being tested
*/
public static Test suite()
{
return new TestSuite( AppTest.class );
}
/**
* Rigourous Test :-)
*/
public void testApp()
{
assertTrue( true );
}
}
log4j.properties
# Set root logger level to DEBUG and its only appender to A1.
log4j.rootLogger=DEBUG, A1
# A1 is set to be a ConsoleAppender.
log4j.appender.A1=org.apache.log4j.ConsoleAppender
# A1 uses PatternLayout.
log4j.appender.A1.layout=org.apache.log4j.PatternLayout
log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n
关于java - 在 Ant、Ivy 和 JUnit 中找不到类 - build.xml 中的错误？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15979391/