Java非常不寻常的类路径问题

Question

我正在尝试使用以下代码运行具有本机库和内容的应用程序：

ProcessBuilder pb = new ProcessBuilder("javaw",
    "-classpath", 
    binDir + "polyrd.jar;" + binDir + "lwjgl.jar;" + binDir + "lwjgl_util.jar;",
    "-Djava.library.path=" + nativesDir,
    "monster860.polyrd.Polyrd");

我尝试在命令行中执行等效操作，将其更改为-cp，仅使用bindir代替binDir + "polyrd.jar;" + binDir + "lwjgl.jar;" + binDir + "lwjgl_util.jar;"，并在java和javaw之间切换，但是无论我做什么，它都给了我：

java.lang.NoClassDefFoundError: monster860/polyrd/Polyrd
Caused by: java.lang.ClassNotFoundException: monster860.polyrd.Polyrd
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)

有人可以帮忙吗？

我的操作系统是Windows Vista。是的，这些文件实际上存在。

这里就是我得到了binDir和nativesDir：

public ProcessRunnable(File nativesDir, File binDir) {
        try {
            this.nativesDir = nativesDir.getCanonicalPath() + File.separator;
            this.binDir = binDir.getCanonicalPath() + File.separator;
        } catch (IOException e) {
        // TODO Auto-generated catch block
            e.printStackTrace();
        }
}

编辑：嗯，当然，它与此完全无关，但是下载程序仅下载文件的前2 KB。

Answer 1

从Java
6开始，“为了特别方便，包含基名称的类路径元素*被认为等同于指定扩展名为.jar或的目录中所有文件的列表.JAR。有关java详细信息，请参见命令行选项。

附录：本示例开始JFreeChart使用提到的通配符功能。

import java.io.BufferedReader;
import java.io.InputStreamReader;

/** @see https://stackoverflow.com/a/15121864/230513 */
public class PBTest {

    private static final String baseDir = "/opt/jfreechart/";
    public static void main(String[] args) {
        ProcessBuilder pb = new ProcessBuilder("java", "-cp",
            baseDir + "lib/*:" + baseDir + "jfreechart-1.0.14-demo.jar",
            "demo.SuperDemo");
        pb.redirectErrorStream(true);
        try {
            Process p = pb.start();
            String s;
            // read from the process's combined stdout & stderr
            BufferedReader stdout = new BufferedReader(
                new InputStreamReader(p.getInputStream()));
            while ((s = stdout.readLine()) != null) {
                System.out.println(s);
            }
            System.out.println("Exit value: " + p.waitFor());
            p.getInputStream().close();
            p.getOutputStream().close();
            p.getErrorStream().close();
        } catch (Exception ex) {
            ex.printStackTrace(System.err);
        }
    }
}

附录：这是Windows的更改，它需要;作为路径分隔符。

private static final String baseDir = "C:/Users/Public/JFreeChart/";
public static void main(String[] args) {
    ProcessBuilder pb = new ProcessBuilder("java", "-cp",
        baseDir + "lib/*;" + baseDir + "jfreechart-1.0.14-demo.jar",
        "demo.SuperDemo");