工具類：將string值轉換爲對應的類型

/**
     * 將value轉換爲對應的class類型 fieldType
     *
     * @param fieldType class類型
     * @param value     需要轉換的值
     * @return Object
     * @throws Exception 反射獲取類 Class.forName 可能會導致異常
     */
    private Object transformValue(Class fieldType, String value) throws Exception {
        if (ValidateUtil.isEmpty(value)) return null;
        if (fieldType == String.class) {
            return String.valueOf(value);
        } else if (fieldType == Boolean.class || fieldType == boolean.class) {
            return Boolean.valueOf(value);
        } else if (fieldType == Byte.class || fieldType == byte.class) {
            return Byte.valueOf(value);
        } else if (fieldType == Double.class || fieldType == double.class) {
            return Double.valueOf(value);
        } else if (fieldType == Float.class || fieldType == float.class) {
            return Float.valueOf(value);
        } else if (fieldType == Integer.class || fieldType == int.class) {
            return Integer.valueOf(value);
        } else if (fieldType == Long.class || fieldType == long.class) {
            return Long.valueOf(value);
        } else if (fieldType == Short.class || fieldType == short.class) {
            return Short.valueOf(value);
        } else if (fieldType == Character.class || fieldType == char.class) {
            return value.charAt(0);
        } else if (fieldType == BigDecimal.class) {
            return new BigDecimal(value);
        } else if (fieldType == BigInteger.class) {
            return new BigInteger(value);
        } else if (fieldType == Date.class) {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            return sdf.parse(value);
        } else if (fieldType == List.class) {
            return Arrays.asList(value.split(","));
        } else if (fieldType == Set.class) {
            return new HashSet<>(Arrays.asList(value.split(",")));
        } else if (fieldType.isEnum()) { // 枚舉類型
            Class<?> cl = Class.forName(fieldType.getName());
            Field field = cl.getDeclaredField(value);
            return field.get(cl);
        } else if (fieldType == Pattern.class) {
            return Pattern.compile(value);
        } else {
            return value;
        }
    }

注意： string 轉list、set等，這裏是自定義string中以逗號分隔，進行轉換