SpringBoot中java.class.path返回的是SpringBoot jar

SpringBoot中System.getProperty(“java.class.path”)返回的是SpringBoot jar, 而不是在外部化部署中返回的加载的jar集合.

如果想在运行时查询系统依赖了哪些jar包,可以通过如下方法获取jar位置URL

public static URL[] getAllJarUrl() {
    ClassLoader classLoader = ClassUtils.getDefaultClassLoader();
    while (classLoader instanceof URLClassLoader) {
        URL[] urLs = ((URLClassLoader) classLoader).getURLs();
        if (urLs != null && urLs.length > 0) {
            return urLs;
        }
        classLoader = classLoader.getParent();
    }
    return new URL[0];
}

参考官方文档 https://docs.spring.io/spring-boot/docs/current/reference/html/executable-jar.html