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1
3 package jodd.util;
4
5 import java.net.URL  ;
6 import java.net.URLClassLoader ;
7 import java.io.InputStream ;
8 import java.io.IOException ;
9 import java.io.File ;
10 import java.util.ArrayList ;
11 import java.util.List ;
12 import java.lang.reflect.InvocationTargetException ;
13
14 public class ClassLoaderUtil {
15
16
18
22 public static void addClassPath(String path) {
23 addClassPath(path, (URLClassLoader ) ClassLoader.getSystemClassLoader());
24 }
25
26
31 public static void addClassPath(String path, URLClassLoader classLoader) {
32 try {
33 ReflectUtil.invokeDeclared(URLClassLoader .class, classLoader, "addURL",
34 new Class []{URL .class},
35 new Object []{new File (path).toURL()});
36 } catch (Throwable th) {
37 throw new RuntimeException ("Unable to add class path'" + path + "'.", th);
38 }
39 }
40
41
42
44
47 public static Class defineClass(String className, byte[] classData) {
48 return defineClass(className, classData, ClassLoader.getSystemClassLoader());
49
50 }
51
52
55 public static Class defineClass(String className, byte[] classData, ClassLoader classLoader) {
56 try {
57 return (Class ) ReflectUtil.invokeDeclared(ClassLoader .class, classLoader, "defineClass",
58 new Class []{String .class, byte[].class, int.class, int.class},
59 new Object []{className, classData, new Integer (0), new Integer (classData.length)});
60
61 } catch (Throwable th) {
62 throw new RuntimeException ("Unable to define class '" + className + "'.", th);
63 }
64 }
65
66
67
69
70
74 public static URL [] getFullClassPath(Class clazz) {
75 return getFullClassPath(clazz.getClassLoader());
76 }
77
78
81 public static URL [] getFullClassPath(ClassLoader classLoader) {
82 List list = new ArrayList ();
83 while (classLoader != null) {
84 if (classLoader instanceof URLClassLoader ) {
85 URL [] urls = ((URLClassLoader ) classLoader).getURLs();
86 for (int i = 0; i < urls.length; i++) {
87 list.add(urls[i]);
88 }
89 }
90 classLoader = classLoader.getParent();
91 }
92
93 URL [] result = new URL [list.size()];
94 for (int i = 0; i < result.length; i++) {
95 result[i] = (URL ) list.get(i);
96 }
97 return result;
98 }
99
100
102 public static URL getResource(String resourceName) {
103 return getResource(resourceName, ClassLoaderUtil.class);
104 }
105
106 public static URL getResource(String resourceName, Class callingClass) {
107 URL url = Thread.currentThread().getContextClassLoader().getResource(resourceName);
108 if (url == null) {
109 url = (jodd.util.ClassLoaderUtil.class).getClassLoader().getResource(resourceName);
110 }
111 if ((url == null) && (callingClass != null)) {
112 ClassLoader cl = callingClass.getClassLoader();
113 if (cl != null) {
114 url = cl.getResource(resourceName);
115 }
116 }
117 if ((url == null) && (resourceName != null) && (resourceName.charAt(0) != '/')) {
118 return getResource('/' + resourceName, callingClass);
119 }
120 return url;
121 }
122
123
125 public static InputStream getResourceAsStream(String resourceName) throws IOException {
126 return getResourceAsStream(resourceName, ClassLoaderUtil.class);
127 }
128
129
130 public static InputStream getResourceAsStream(String resourceName, Class callingClass) throws IOException {
131 URL url = getResource(resourceName, callingClass);
132 if (url != null) {
133 return url.openStream();
134 }
135 return null;
136 }
137
138
140
143 public static Class loadClass(String className) throws ClassNotFoundException {
144 return loadClass(className, ClassLoaderUtil.class);
145 }
146
147
150 public static Class loadClass(String className, Class callingClass) throws ClassNotFoundException {
151 try {
152 return Thread.currentThread().getContextClassLoader().loadClass(className);
153 } catch (ClassNotFoundException cnfex1) {
154 try {
155 return Class.forName(className);
156 } catch (ClassNotFoundException cnfex2) {
157 try {
158 return (jodd.util.ClassLoaderUtil.class).getClassLoader().loadClass(className);
159 } catch (ClassNotFoundException cnfex3) {
160 if (callingClass == null) {
161 throw cnfex3;
162 }
163 return callingClass.getClassLoader().loadClass(className);
164 }
165 }
166 }
167 }
168
169 }
170 |
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