java 如何使用 JUnit / Ant 加载属性文件？
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How do I load a properties file with JUnit / Ant?
提问by Dave
I'm using Ant 1.8, JUnit 4.8.2. I'm trying to load a properties file and having some problems. The properties file is at the root of my source directory and I load that into the classpath as well as explicitly loading the properties file in the classpath. Below is my ant build.xml file. Here is how I'm trying to load the properties …
我使用的是 Ant 1.8，JUnit 4.8.2。我正在尝试加载属性文件并遇到一些问题。属性文件位于我的源目录的根目录中，我将其加载到类路径中，并在类路径中显式加载属性文件。下面是我的 ant build.xml 文件。这是我尝试加载属性的方式……
private void loadTestProperties() {
try {
Properties prop = new Properties();
InputStream in = getClass().getResourceAsStream("db.properties");
prop.load(in);
in.close();
} catch (Exception e) {
fail("Failed to load properties: " + e.getMessage());
} // try
} // loadTestProperties
It always fails with null (properties were not loaded).
它总是以 null 失败（未加载属性）。
<project name="leads-testing" default="build" basedir=".">
<property name="tst-dir" location="/Users/davea/Documents/workspace-sts-2.6.0.SR1/infinitiusa_leads_testing/test" />
<property name="db-props-file" location="/Users/davea/Documents/workspace-sts-2.6.0.SR1/infinitiusa_leads_testing/test/db.properties" />
<property name="TALK" value="true" />
<path id="classpath.base">
</path>
<path id="classpath.test">
<pathelement location="lib/junit-4.8.2.jar" />
<pathelement location="lib/selenium-java-client-driver.jar" />
<pathelement location="lib/classes12.jar" />
<pathelement location="${tst-dir}" />
<pathelement location="${db-props-file}" />
<path refid="classpath.base" />
</path>
<target name="compile-test">
<javac srcdir="${tst-dir}"
verbose="${TALK}"
>
<classpath refid="classpath.test"/>
</javac>
</target>
<target name="clean-compile-test">
<delete verbose="${TALK}">
<fileset dir="${tst-dir}" includes="**/*.class" />
</delete>
</target>
<target name="test" depends="compile-test">
<junit>
<classpath refid="classpath.test" />
<formatter type="brief" usefile="false" />
<test name="com.criticalmass.infinitiusa.tests.InfinitiConfigOldG25Base" />
</junit>
</target>
<target name="all" depends="test" />
<target name="clean" depends="clean-compile-test" />
</project>
Anyone know the correct way to load the properties file? Thanks, - Dave
有人知道加载属性文件的正确方法吗？谢谢， - 戴夫
回答by matt b
Attempting to load a resource from getClass().getResourceAsStream()will cause db.propertiesto be looked for based on the package name of the class, i.e. in a directory (in the classpath) like com/criticalmass/infinitiusa/....
尝试从中加载资源getClass().getResourceAsStream()将导致db.properties根据类的包名称进行查找，即在目录中（在类路径中），如com/criticalmass/infinitiusa/....
Instead, to load from the root of the classpath, try something like
相反，要从类路径的根目录加载，请尝试类似
InputStream in = Thread.currentThread().getContextClassLoader().getResourceAsStream("db.properties");
回答by Isaac Truett
InputStream in = getClass().getResourceAsStream("db.properties");
Try "/db.properties"instead. See Class.getResourceAsStream()
试试吧"/db.properties"。见Class.getResourceAsStream()
For Ant, file paths are resolved relative to the working directory. So if running from the project root, the file would be in src/${db-props-file}.
对于 Ant，文件路径是相对于工作目录解析的。因此，如果从项目根目录运行，该文件将位于src/${db-props-file}.
