查找类在哪个JAR文件中

查找类在哪个JAR文件中

package com.tool.jar;

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;

/*
* 功能：查找类在哪个JAR文件中
* 2012-10-15
* */

public class FindInJar {

public static void main(String args[]) {
String findClass="javax.transaction.UserTransaction";
String jarPath="d:\\lib";

FindInJar findInJar = new FindInJar(findClass);

List<?> jarFiles = findInJar.findClass(jarPath, true);
if (jarFiles.size() == 0) {
System.out.println("Not Found");
} else {
for (int i = 0; i < jarFiles.size(); i++) {
System.out.println(jarFiles.get(i));
}
}
}

public String className;

public ArrayList<String> jarFiles = new ArrayList<String>();

public FindInJar() {
}

public FindInJar(String className) {
this.className = className;
}

public void setClassName(String className) {
this.className = className;
}

public List<String> 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 < files.length; i++) {
//System.out.println(files[i]);
if (recurse && files[i].isDirectory()) {
searchDir(files[i].getAbsolutePath(), true);
} else {
String filename = files[i].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);
//System.out.println(filename);
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}

public List<String> getFilenames() {
return this.jarFiles;
}

protected String getClassName(ZipEntry entry) {
StringBuffer className = new StringBuffer(entry.getName().replace("/", "."));
return className.toString();
}
}