java - 动态修改类路径

Question

我想在运行时将 /home/nameuser/.myProject/conf 下的配置文件添加到类路径中。

我尝试使用 URLClassLoader 但没有成功。

URL[] url={new URL("file://foo")};
URLClassLoader loader = new URLClassLoader(url);

或

ClassLoader currentThreadClassLoader
 = Thread.currentThread().getContextClassLoader();

// Add the conf dir to the classpath
// Chain the current thread classloader
URLClassLoader urlClassLoader
 = new URLClassLoader(new URL[]{new File("mtFile").toURL()},
                      currentThreadClassLoader);

// Replace the thread classloader - assumes
// you have permissions to do so
Thread.currentThread().setContextClassLoader(urlClassLoader);

Answer 1

我成功了

谢谢 Darcy Qiu 很好 URL[] url={new URL("file:///home/nameuser/.myProject/conf/")}; 我必须做并且不是 URL[] url={new URL("file:///home/nameuser/.myProject/conf/myfile")};