前段时间 @绝望的八皮 写了个自动探测model注册插件，见：http://my.oschina.net/b1412/blog/67764 主要功能是为了省去在系统的config中每个model对应表名的配置，通过注解的方式绑定相应的表名，这样做也为将来实现jfinal组件化分离埋下了很好的伏笔，总体来说还是蛮有意义的。遗憾的是可能由于时间原因，八皮没能完成对jar包中class类绑定的扫描，私下联系过说会抽时间做，奈何需求紧急，自己先应付着写了个粗陋的实现，且等八皮优化版本。

基本事先没有修改，唯一修改的是对class扫描的类ClassSeacher,其余参照以上连接实现，就不一一发了。

package net.zfsy.db.plugin;import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import java.util.jar.JarEntry;
import java.util.jar.JarFile;public class ClassSearcher {/*** 递归查找文件* * @param baseDirName*            查找的文件夹路径* @param targetFileName*            需要查找的文件名*/private static List<String> findFiles(String baseDirName,String targetFileName) {/*** 算法简述： 从某个给定的需查找的文件夹出发，搜索该文件夹的所有子文件夹及文件，* 若为文件，则进行匹配，匹配成功则加入结果集，若为子文件夹，则进队列。 队列不空，重复上述操作，队列为空，程序结束，返回结果。*/List<String> classFiles = new ArrayList<String>();String tempName = null;// 判断目录是否存在File baseDir = new File(baseDirName);if (!baseDir.exists() || !baseDir.isDirectory()) {System.out.println("文件查找失败：" + baseDirName + "不是一个目录！");} else {String[] filelist = baseDir.list();for (int i = 0; i < filelist.length; i++) {File readfile = new File(baseDirName + File.separator+ filelist[i]);if (!readfile.isDirectory()) {tempName = readfile.getName();if (ClassSearcher.wildcardMatch(targetFileName, tempName)) {String classname;String tem = readfile.getAbsoluteFile().toString().toString().replaceAll("\\\\", "/");classname = tem.substring(tem.indexOf("/classes")+ "/classes".length(), tem.indexOf(".class"));if (classname.startsWith("/")) {classname = classname.substring(classname.indexOf("/") + 1);}classname = className(classname, "/classes");classFiles.add(classname);}} else if (readfile.isDirectory()) {classFiles.addAll(findFiles(baseDirName + File.separator+ filelist[i], targetFileName));}}}return classFiles;}/*** 查找jar包中的class* @param baseDirName jar路径* @param jarFileURL jar文件地址* @return */public static List<String> findjarFiles(String baseDirName,URL... jarFileURL) {List<String> classFiles = new ArrayList<String>();try {// 判断目录是否存在File baseDir = new File(baseDirName);if (!baseDir.exists() || !baseDir.isDirectory()) {System.out.println("文件查找失败：" + baseDirName + "不是一个目录！");} else {String[] filelist = baseDir.list();for (int i = 0; i < filelist.length; i++) {if (filelist[i].contains("zfplugin")) {//查找含有zfplugin的jar包JarFile localJarFile = new JarFile(new File(baseDirName+ File.separator + filelist[i]));Enumeration<JarEntry> entries = localJarFile.entries();while (entries.hasMoreElements()) {JarEntry jarEntry = entries.nextElement();String entryName = jarEntry.getName();if (jarEntry.isDirectory()) {// System.out.println(entryName);} else if (entryName.endsWith(".class")) {String className = entryName.replaceAll("/",".").substring(0,entryName.length() - 6);classFiles.add(className);}}}}}} catch (IOException e) {e.printStackTrace();}return classFiles;}public static List<Class> findClasses(Class clazz)throws MalformedURLException {List<Class> classList = new ArrayList<Class>();URL classPathUrl = ClassSearcher.class.getResource("/");List<String> classFileList = findFiles(classPathUrl.getFile(),"*.class");String lib = new File(classPathUrl.getFile()).getParent() + "/lib/";List<String> jarclassFiles = findjarFiles(lib, new File(lib).toURL());classFileList.addAll(jarclassFiles);for (String classFile : classFileList) {// String className = className(classFile, "/classes");System.out.println(classFile);try {Class<?> classInFile = Class.forName(classFile);if (classInFile.getSuperclass() == clazz) {classList.add(classInFile);}} catch (ClassNotFoundException e) {e.printStackTrace();}}return classList;}private static String className(String classFile, String pre) {String objStr = classFile.replaceAll("\\\\", "/");return objStr.replaceAll("/", ".");}/*** 通配符匹配* * @param pattern*            通配符模式* @param str*            待匹配的字符串* @return  匹配成功则返回true，否则返回false*/private static boolean wildcardMatch(String pattern, String str) {int patternLength = pattern.length();int strLength = str.length();int strIndex = 0;char ch;for (int patternIndex = 0; patternIndex < patternLength; patternIndex++) {ch = pattern.charAt(patternIndex);if (ch == '*') {// 通配符星号*表示可以匹配任意多个字符while (strIndex < strLength) {if (wildcardMatch(pattern.substring(patternIndex + 1),str.substring(strIndex))) {return true;}strIndex++;}} else if (ch == '?') {// 通配符问号?表示匹配任意一个字符strIndex++;if (strIndex > strLength) {// 表示str中已经没有字符匹配?了。return false;}} else {if ((strIndex >= strLength) || (ch != str.charAt(strIndex))) {return false;}strIndex++;}}return (strIndex == strLength);}public static void main(String[] args) throws MalformedURLException {// URL classPathUrl = ClassSearcher.class.getResource("/");// String baseDirName = new File(classPathUrl.getFile()).getParent()// + "/lib/";// URL url = new File(baseDirName).toURL();// ClassSearcher.findjarFiles(baseDirName, url);//ClassSearcher.findClasses(Demo.class);}
}