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  • Java通过编译文件获取项目包下的所有类

    import java.io.File;
    import java.net.URL;
    import java.util.ArrayList;
    import java.util.Enumeration;
    import java.util.Iterator;
    import java.util.List;
    
    public class ScanPackage {
        public static List<Class<?>> getClassesByPackageName(String packageName) {
            ArrayList classes = new ArrayList();
    
            try {
                ClassLoader e = Thread.currentThread().getContextClassLoader();
                String path = packageName.replace('.', '/');
                Enumeration resources = e.getResources(path);
                ArrayList dirs = new ArrayList();
    
                while (resources.hasMoreElements()) {
                    URL directory = (URL) resources.nextElement();
                    dirs.add(new File(directory.getFile()));
                }
    
                Iterator arg6 = dirs.iterator();
    
                while (arg6.hasNext()) {
                    File directory1 = (File) arg6.next();
                    classes.addAll(findClasses(directory1, packageName));
                }
            } catch (Exception arg7) {
                arg7.printStackTrace();
            }
    
            return classes;
        }
    
        private static List<Class<?>> findClasses(File directory, String packageName) throws ClassNotFoundException {
            ArrayList classes = new ArrayList();
            if (!directory.exists()) {
                return classes;
            } else {
                File[] files = directory.listFiles();
                File[] arg6 = files;
                int arg5 = files.length;
    
                for (int arg4 = 0; arg4 < arg5; ++arg4) {
                    File file = arg6[arg4];
                    if (file.isDirectory()) {
                        assert !file.getName().contains(".");
    
                        classes.addAll(findClasses(file, packageName + '.' + file.getName()));
                    } else if (file.getName().endsWith(".class")) {
                        classes.add(Class
                                .forName(packageName + "." + file.getName().substring(0, file.getName().length() - 6)));
                    }
                }
    
                return classes;
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/47Gamer/p/14033060.html
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