java 找不到属性文件 - 如何将其定位为资源？
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Properties file not found - how to locate it as resource?
提问by coure2011
I have a properties file at location (from netbeans project explorer)
我在某个位置有一个属性文件（来自 netbeans 项目资源管理器）
-MyTest
+Web Pages
+Source Packages
-Test Packages
-<default package>
+Env.properties <---- Here it is
+com.mycomp.gts.test
+com.mycomp.gts.logintest
.....
....
Now when I am trying to find this file using code
现在，当我尝试使用代码查找此文件时
InputStream propertiesInputStream = getClass().getResourceAsStream("Env.properties");
ENV.load(propertiesInputStream);
Its throwing java.lang.NullPointerException
它的投掷 java.lang.NullPointerException
回答by Perception
You cannot use the class as a reference to load the resource, because the resource path is notrelative to the class. Use the class loader instead:
不能使用类作为加载资源的引用，因为资源路径与类无关。改用类加载器：
InputStream propertiesInputStream = getClass().getClassLoader()
.getResourceAsStream("Env.properties");
ENV.load(propertiesInputStream);
Or alternatively, you can use the context class loader of the current thread:
或者，您可以使用当前线程的上下文类加载器：
InputStream propertiesInputStream = Thread.currentThread()
.getContextClassLoader().getResourceAsStream("Env.properties");
ENV.load(propertiesInputStream);
回答by Hunter Zhao
String basePath = PropertiesUtil.class.getResource("/").getPath();
InputStream in = new FileInputStream(basePath + "Env.properties");
pros.load(in);
Good luck:)
祝你好运：）
回答by sk2212
Try to get absolute path with:
尝试获取绝对路径：
String absolute = getClass().getProtectionDomain().getCodeSource().getLocation().toExternalForm();
You can print out the string absoluteand try to substring it to your path of your properties file.
您可以打印出字符串absolute并尝试将其子字符串化到您的属性文件的路径中。
