|
1 package com.opensymphony.webwork;
2
3 import java.io.File  ;
4 import java.lang.reflect.Method ;
5 import java.net.MalformedURLException ;
6 import java.net.URL ;
7 import java.net.URLClassLoader ;
8 import java.util.ArrayList ;
9
10
15 public class Main {
16 public static void main(String [] args) {
17 ArrayList urls = new ArrayList ();
18 try {
19 findJars(new File ("lib"), urls);
20 urls.add(new File ("webwork-2.2.jar").toURL());
21 } catch (MalformedURLException e) {
22 e.printStackTrace();
23 System.out.println("Could not find URLs -- see stack trace.");
24 }
25
26 String command = args[0];
27 if ("prototype".equals(command)) {
28 URLClassLoader cl = new URLClassLoader ((URL []) urls.toArray(new URL [urls.size()]),
29 Main.class.getClassLoader());
30 Thread.currentThread().setContextClassLoader(cl);
31 try {
32 Class clazz = cl.loadClass("com.opensymphony.webwork.Prototype");
33 Method main = clazz.getDeclaredMethod("main", new Class []{String [].class});
34 main.invoke(null, new Object []{new String [0]});
35 } catch (Exception e) {
36 e.printStackTrace();
37 }
38 }
39 }
40
41 private static void findJars(File file, ArrayList urls) throws MalformedURLException {
42 File [] files = file.listFiles();
43 for (int i = 0; i < files.length; i++) {
44 File f = files[i];
45 if (f.isDirectory()) {
46 findJars(f, urls);
47 } else if (f.getName().endsWith(".jar")) {
48 urls.add(f.toURL());
49 }
50 }
51 }
52
53 static class MyClassLoader extends URLClassLoader {
54 private ClassLoader parent;
55
56 public MyClassLoader(URL [] urls, ClassLoader parent) {
57 super(urls, parent);
58 this.parent = parent;
59 }
60
61 public Class loadClass(String name) throws ClassNotFoundException {
62 Class aClass = null;
63 try {
64 aClass = findClass(name);
65 } catch (ClassNotFoundException e) {
66 }
67
68 if (aClass != null) {
69 return aClass;
70 } else {
71 return super.loadClass(name);
72 }
73 }
74
75 public URL getResource(String name) {
76 URL url = findResource(name);
77 if (url == null && parent != null) {
78 url = super.getResource(name);
79 }
80
81 return url;
82 }
83
84 }
85 }
86 |
Popular Tags |
Java API By Example, From Geeks To Geeks.