我想出了以下方法来转换 Admin SDK 中的 ArrayMaps 和 <String,Object> 对象的通用 List。
它需要以下导入:
import com.google.api.client.json.GenericJson;
import com.google.api.client.util.ArrayMap;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.util.ArrayList;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
下面是解析的方法:
public <T extends GenericJson> List<T> parse(Object genericItem, Class<T> clazz){
List<T> result = new ArrayList<T>();
if (genericItem != null){
try {
Constructor<T> constructor = clazz.getConstructor(new Class[0]); // find the default constructor of the input class type
List<ArrayMap<String,Object>> objects = (List<ArrayMap<String,Object>>)genericItem;
for (ArrayMap<String,Object> object: objects){
T id = constructor.newInstance(); // call the default constructor
for (int i = 0; i < object.size(); i++)
id.put(object.getKey(i), object.getValue(i));
result.add(id);
}
} catch (NoSuchMethodException ex) {
Logger.getLogger(ListArrayMapParser.class.getName()).log(Level.SEVERE, null, ex);
} catch (SecurityException ex) {
Logger.getLogger(ListArrayMapParser.class.getName()).log(Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
Logger.getLogger(ListArrayMapParser.class.getName()).log(Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
Logger.getLogger(ListArrayMapParser.class.getName()).log(Level.SEVERE, null, ex);
} catch (IllegalArgumentException ex) {
Logger.getLogger(ListArrayMapParser.class.getName()).log(Level.SEVERE, null, ex);
} catch (InvocationTargetException ex) {
Logger.getLogger(ListArrayMapParser.class.getName()).log(Level.SEVERE, null, ex);
}
}
return result;
}
这样工作:
List<UserPhone> phones = parser.parse(user.getPhones(), UserPhone.class);
List<UserExternalId> externalIds = parser.parse(user.getExternalIds(), UserExternalId.class);
List<UserOrganization> organizations = parser.parse(user.getOrganizations(), UserOrganization.class);
List<UserEmail> userEmails = parser.parse(user.getEmails(), UserEmail.class);
完成此操作后,您可以更新电话、externalIds...,然后执行user.setPhones(phones),用户对象将在保存时很好地处理新对象。
我认为您今天不能让 API 自动为您返回解析结果。