通过程序命令查找类文件
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 FindInJar { public String className; public ArrayList jarFiles = new ArrayList(); public FindInJar() { } public FindInJar(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 < files.length; 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); } } } } } } 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[]) { FindInJar findInJar = new FindInJar("com.xxx.xxx.XX");// Class Name List jarFiles = findInJar.findClass("E:/xxxx/lib", true);// Path if (jarFiles.size() == 0) { System.out.println("Not Found"); } else { for (int i = 0; i < jarFiles.size(); i++) { System.out.println(jarFiles.get(i)); } } } }?