PortletPreferencesImpl.java 文件源码

public void setValue(String key, String value) throws ReadOnlyException {
    if (isReadOnly(key)) {
        throw new ReadOnlyException(EXCEPTIONS.getString(
                "error.preference.readonly", key));
    }
    PortletPreference pref = preferences.get(key);
    String[] values = value == null ? new String[0] : new String[] { value };
    if (pref != null) {
        pref.setValues(values);
    } else {
        pref = new PortletPreferenceImpl(key, values);
        preferences.put(key, pref);
    }
}