＆＃34; FileNotFoundException异常＆＃34;从jar打开文件时，它肯定存在

Question

我有一段用于打开和读取属性文件的代码：

public static Properties getProperties(String path) {
    ClassLoader classLoader = PropertiesLoader.class.getClassLoader();

    FileInputStream file = null;
    try {
        if (classLoader.getResource(path) == null) {
            log.error("Can't get resource {} from classLoader", path);
            return null;
        }
        file = new FileInputStream(classLoader.getResource(path).getFile());
        Properties properties = new Properties();
        properties.load(file);
        return properties;
    } catch (FileNotFoundException e) {
        log.error("Property file {} not found with exception: \n {}",
                        path,
                        e.getMessage()
                );
    } catch (IOException e) {
        log.error("Can't load property file {} with exception: \n {}",
                        path,
                        e.getMessage()
                );
    }
    return null;
}

我通过mvn运行课程

mvn exec:java -Dexec.mainClass="edu.garmr.sniffer.Sniffer"

eveything还可以，但是当我尝试使用以下方式编译带有依赖项的jar文件时：     mvn clean编译程序集：单个 并直接从bash运行我的类我有以下错误： login@ubuntu:~/garmr$ java -cp ./target/garmr-1.0-SNAPSHOT-jar-with-dependencies.jar 'edu.garmr.sniffer.Sniffer' 2015-05-21 09:56:37 ERROR PropertiesLoader:37 - Property file sniffer.properties not found with exception: file:/home/login/garmr/target/garmr-1.0-SNAPSHOT-jar-with-dependencies.jar!/sniffer.properties (No such file or directory) Exception in thread "main" java.lang.NullPointerException at edu.garmr.sniffer.Sniffer.main(Sniffer.java:87)

我尝试使用mc打开jar文件，jar的根目录下有这样的文件。