在 Java 中读取属性文件 [英] Reading Properties file in Java

问题描述

我有以下代码试图读取属性文件:

I have the following code trying to read a properties file:

Properties prop = new Properties();
ClassLoader loader = Thread.currentThread().getContextClassLoader();           
InputStream stream = loader.getResourceAsStream("myProp.properties");
prop.load(stream);

我在最后一行出现异常.具体:

I get an exception at the last line. Specifically:

Exception in thread "main" java.lang.NullPointerException
at java.util.Properties$LineReader.readLine(Properties.java:418)
at java.util.Properties.load0(Properties.java:337)
at java.util.Properties.load(Properties.java:325)
at Assignment1.BaseStation.readPropertyFile(BaseStation.java:46)
at Assignment1.BaseStation.main(BaseStation.java:87)

谢谢，尼科斯

推荐答案

根据您的异常，InputStream 为空，这意味着类加载器没有找到您的属性文件.我猜 myProp.properties 位于您项目的根目录中，如果是这种情况，您需要在前面加一个斜杠:

Based on your exception, the InputStream is null, this means the class loader is not finding your properties file. I'm guessing that myProp.properties is in the root of your project, if that's the case, you need a preceding slash:

InputStream stream = loader.getResourceAsStream("/myProp.properties");

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