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();    }}