用Java读取属性文件
我有以下代码尝试读取属性文件:
Properties prop = new Properties();ClassLoader loader = Thread.currentThread().getContextClassLoader();
InputStream stream = loader.getResourceAsStream("myProp.properties");
prop.load(stream);
我在最后一行有一个例外。特别:
Exception in thread "main" java.lang.NullPointerExceptionat 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)
回答:
根据你的异常,该InputStream
值为null,这意味着类加载器未找到你的属性文件。我猜测myProp.properties位于项目的根目录中,如果是这种情况,则需要前面的斜杠:
InputStream stream = loader.getResourceAsStream("/myProp.properties");
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