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查看类是从哪个Jar包中加载的:
java 代码
ProtectionDomain pd = MyCase.class.getProtectionDomain();
CodeSource cs = pd.getCodeSource();
System.out.println(cs.getLocation());
查找类在某个目录下哪个Jar包中:
package test;
import java.io.File;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
public class FindJarOfClass {
public String className;
public ArrayList jarFiles = new ArrayList();
public FindJarOfClass() {
}
public FindJarOfClass(String className) {
this.className = className;
}
public void setClassName(String className) {
this.className = className;
}
public List findClass(String dir, boolean recurse) {
searchDir(dir, recurse);
return this.jarFiles;
}
protected void searchDir(String dir, boolean recurse) {
try {
File d = new File(dir);
if (!d.isDirectory()) {
return;
}
File[] files = d.listFiles();
for (int i = 0; i
if (recurse && files.isDirectory()) {
searchDir(files.getAbsolutePath(), true);
} else {
String filename = files.getAbsolutePath();
if (filename.endsWith(".jar")||filename.endsWith(".zip")) {
ZipFile zip = new ZipFile(filename);
Enumeration entries = zip.entries();
while (entries.hasMoreElements()) {
ZipEntry entry = (ZipEntry) entries.nextElement();
String thisClassName = getClassName(entry);
if (thisClassName.equals(this.className) || thisClassName.equals(this.className + ".class")) {
this.jarFiles.add(filename);
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
public List getFilenames() {
return this.jarFiles;
}
protected String getClassName(ZipEntry entry) {
StringBuffer className = new StringBuffer(entry.getName().replace('/', '.'));
return className.toString();
}
public static void main(String args[]) {
FindJarOfClass findInJar = new FindJarOfClass("org.apache.tuscany.test.SCATestCase");
List jarFiles = findInJar.findClass("E:/yanhua/library/tuscany-jar", true);
if (jarFiles.size() == 0) {
System.out.println("Not Found");
} else {
for (int i = 0; i
System.out.println(jarFiles.get(i));
}
}
}
}
本文来自ChinaUnix博客,如果查看原文请点:http://blog.chinaunix.net/u/11872/showart_404902.html |
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