如何从Java任务设置Java库路径？

可以在java任务中指定库路径吗？类似于：

java -Djava.library.path=somedir Whatever java-Djava.library.path=somedir无论什么都应该是您正在寻找的

例如，另见

---

您可以在java ant任务中逐个设置它们：

<sysproperty key="test.classes.dir" 
             value="${build.classes.dir}"/> 

---

我完全忽略了您试图传递

java.library.path

属性的事实
如中所述：

如果您试图在java任务之外设置它的值，Ant会忽略它。因此，我将除该属性之外的所有属性都放在我的syspropertyset中，它按预期工作

意思是：

<property name="java.library.path" location="${dist}"/>

<propertyset id="java.props">
    <propertyref name="java.library.path"/>
</propertyset>

<target name="debug">
    <java>
        <syspropertyset refid="java.props"/>
    </java>
</target>

不起作用，但应满足以下条件：

<target name="debug">
    <java>
        <sysproperty key="java.library.path" path="${dist}"/>
    </java>
</target>

（尽管如果“

fork

”属性不起作用，您可以尝试将其设置为true）

---

（注意：您）

我已经设法使用环境变量

ANT\u OPTS

使其工作。如果可能的话，我想从任务中看到这一点。

对于JUnit ant任务在

部分设置
java.library.path

2.在脚本中设置
java.library.path
我遗漏了您试图传递的特定属性：我已更新了我的答案。我离开了工作。我明天试试，如果行得通，我会记下你的答案。谢谢
<java>
     <!--copy all proxy settings from the running JVM--> 
     <syspropertyset refid="proxy.settings"/> 
     ...
</java>

<property name="java.library.path" location="${dist}"/>

<propertyset id="java.props">
    <propertyref name="java.library.path"/>
</propertyset>

<target name="debug">
    <java>
        <syspropertyset refid="java.props"/>
    </java>
</target>

<target name="debug">
    <java>
        <sysproperty key="java.library.path" path="${dist}"/>
    </java>
</target>

<target name="test" depends="build-test">
  <junit printsummary="yes" fork="true">
    <sysproperty key="java.library.path" 
                 path="path/where/your/library/is/located"/>
    <!-- ... -->
  </junit>
</target>

public class MyFeatureTest {

  @Before
  public void load_library_xxxxx() {
    System.loadLibrary("library_name_without_extension");
  }

  @Test
  public void on_that_case_my_feature_does_this() {
    // ...
  }
}

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<project default="build" name="xxxxxx">

  <!-- ... -->

  <property name="lib_dir" value="path/where/your/library/is/located"/>

  <!-- ... -->

  <target name="test" depends="build-test">
    <mkdir dir="${test_report_dir}" />
    <junit printsummary="yes" fork="true">
      <sysproperty key="java.library.path" path="${lib_dir}"/>
      <classpath>
        <pathelement location="${antlr}" />
        <!-- ... -->
      </classpath>

      <formatter type="xml" />
      <formatter type="plain" />
      <batchtest todir="${test_report_dir}">
        <fileset dir="${test_src_dir}">
          <include name="**/*Test.java" />
        </fileset>
      </batchtest>
    </junit>
  </target>
</project>

> ant test -v
[...]
test:
    [mkdir] Skipping /home/user/my/dir/report because it already exists.
    [junit] Implicitly adding /usr/share/ant/lib/junit.jar:[...] to CLASSPATH
    [junit] Executing '/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java' with arguments:
    [junit] '-Djava.library.path=/home/user/my/project/path/where/your/library/is/located'
    [junit] '-classpath'
    [junit] '/home/user/my/project/external/antlr.jar:[...]'
    [junit] 'org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner'
    [junit] 'com.example.myproject.myfeature.MyFeatureTest'
    [junit] 'skipNonTests=false'
    [junit] 'filtertrace=true'
    [junit] 'haltOnError=false'
    [junit] 'haltOnFailure=false'
    [junit] 'formatter=org.apache.tools.ant.taskdefs.optional.junit.SummaryJUnitResultFormatter'
    [junit] 'showoutput=false'
    [junit] 'outputtoformatters=true'
    [junit] 'logfailedtests=true'
    [junit] 'threadid=0'
    [junit] 'logtestlistenerevents=false'
    [junit] 'formatter=org.apache.tools.ant.taskdefs.optional.junit.XMLJUnitResultFormatter,/home/user/my/dir/report/TEST-com.example.myproject.myfeature.MyFeatureTest.xml'
    [junit] 'formatter=org.apache.tools.ant.taskdefs.optional.junit.PlainJUnitResultFormatter,/home/user/my/dir/report/TEST-com.example.myproject.myfeature.MyFeatureTest.txt'
    [junit] 'crashfile=/home/user/my/project/junitvmwatcher4952613017772370651.properties'
    [junit] 'propsfile=/home/user/my/project/junit3999929381398716397.properties'
    [junit] 
    [junit] The ' characters around the executable and arguments are
    [junit] not part of the command.
    [...]