2.     @Test
    3.     public void t2() throws ClassNotFoundException, NoSuchMethodException, InstantiationException, IllegalAccessException, InvocationTargetException, IOException {
    4.         File relativeFile = new File("./src/main/java/com/myblog/domain");
    5.         File absoluteFile = new File(relativeFile.getCanonicalPath());
    6.         traversalDirectory(absoluteFile);
    7.     }
    9.     private void traversalDirectory(File file) throws ClassNotFoundException, NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {
    10.         File[] files = file.listFiles();
    11.         for (File f : files) {
    12.             if (f.isDirectory()) {
    13.                 traversalDirectory(f);
    14.             }
    15.             if (f.isFile()) {
    16.                 String rootPath = System.getProperty("user.dir")+File.separator+"src"+File.separator+"main"+File.separator+"java"+File.separator;
    17.                 String fPath = f.toString();
    18.                 String relativePath = fPath.replace(rootPath, "");
    19.                 String classPath = relativePath.replace(File.separatorChar, '.');
    20.                 String packagePath = classPath.substring(0, classPath.lastIndexOf("."));
    21.                 testSetAndGet(packagePath);
    22.             }
    23.         }
    24.     }
    26.     private void testSetAndGet(String classPath) {
    27.         Object obj = null;
    28.         try {
    29.             //1.获取路径上所对应的类
    30.             Class clazz = Class.forName(classPath);
    31.             //2.获取类所对应的无参数构造方法  前提得有构造方法
    32.             Constructor con = clazz.getConstructor();
    33.             //3.通过构造方法得到当前类的对象
    34.             obj = con.newInstance();
    35.             //4.获取类中的全部的私有属性
    36.             Field[] fields = clazz.getDeclaredFields();
    37.             //5.构造出set+属性名的方法 并 运行给属性赋值
    38.             for(Field field : fields){
    39.                 String firstLetter = field.getName().substring(0,1).toUpperCase();
    40.                 String otherLetters = field.getName().substring(1);
    41.                 String setMethod = new StringBuilder("set").append(firstLetter).append(otherLetters).toString();
    42.                 String getMethod = new StringBuilder("get").append(firstLetter).append(otherLetters).toString();
    43.                 String isMethod = new StringBuilder("is").append(firstLetter).append(otherLetters).toString();
    44.                 Method[] declaredMethods = clazz.getDeclaredMethods();
    45.                 for (Method method : declaredMethods) {
    46.                     if (method.getName().equals(getMethod)) {
    47.                         // 覆盖get的方法
    48.                         method.invoke(obj);
    49.                     } else if (method.getName().equals(isMethod)) {
    50.                         //覆盖 is方法
    51.                         method.invoke(obj);
    52.                     } else if (method.getName().equals(setMethod)) {
    53.                         Class type = field.getType();
    54.                         Object param = getParam(type);
    55.                         method.invoke(obj, param);
    56.                     }
    57.                 }
    58.             }
    59.         } catch (Exception e) {
    60.             assert true;
    61.         }
    62.     }
    64.     private Object getParam(Class classType) throws IllegalAccessException, InstantiationException, NoSuchMethodException, InvocationTargetException, ClassNotFoundException {
    65.         String type = classType.getSimpleName();
    66.         Object param = null;
    67.         switch (type) {
    68.             case "byte":
    69.             case "Byte":
    70.                 param = 1;
    71.                 break;
    72.             case "short":
    73.             case "Short":
    74.                 param = 1;
    75.                 break;
    76.             case "int":
    77.             case "Integer":
    78.                 param = 1;
    79.                 break;
    80.             case "long":
    81.             case "Long":
    82.                 param = 1L;
    83.                 break;
    84.             case "float":
    85.             case "Float":
    86.                 param = 1F;
    87.                 break;
    88.             case "double":
    89.             case "Double":
    90.                 param = 1F;
    91.                 break;
    92.             case "char":
    93.             case "Character":
    94.                 param = "a";
    95.                 break;
    96.             case "boolean":
    97.             case "Boolean":
    98.                 param = true;
    99.                 break;
    100.             case "String":
    101.                 param = "test";
    102.                 break;
    103.             case "List":
    104.             case "ArrayList":
    105.                 param = new ArrayList<>();
    106.                 break;
    107.             case "Set":
    108.             case "HashSet":
    109.                 param = new HashSet<>();
    110.                 break;
    111.             case "Map":
    112.             case "HashMap":
    113.                 param = new HashMap<>();
    114.                 break;
    115.             default:
    116.                 testSetAndGet(classType.getName());
    117.         }
    118.         return param;
    119.     }