java - 以编程方式(或替代方案)设置 Djava.library.path？

Question

我希望以编程方式设置 VM 参数 Djava.library.path。如果无法做到这一点，有什么替代方案(如果有的话)？

Answer 1

用这个方法很容易解决:

public static void addLibraryPath(String pathToAdd) throws Exception {
    Field usrPathsField = ClassLoader.class.getDeclaredField("usr_paths");
    usrPathsField.setAccessible(true);

    String[] paths = (String[]) usrPathsField.get(null);

    for (String path : paths)
        if (path.equals(pathToAdd))
            return;

    String[] newPaths = Arrays.copyOf(paths, paths.length + 1);
    newPaths[newPaths.length - 1] = pathToAdd;
    usrPathsField.set(null, newPaths);
}