there should be an exception handing when the value of <property> set is not in candidate values in configuration files

For example (segment from server.xml):
```
<user name="user">
        <property name="password">123</property>
        <property name="schemas">TESTDB</property>
        <property name="usingDecrypt">3</property>
  </user>

```
The candidate values of "usingDecrypt" are '0' and '1', so there should be some exception handing when we set it as '3'.

