因为它是哈希映射,你怎么能期望订单检索,如果想要订单检索请实现你自己的 ResultTransformer 它将返回 LinkedHashMap 例如
public class AliasToEntityOrderedMapResultTransformer extends AliasedTupleSubsetResultTransformer {
public static final AliasToEntityOrderedMapResultTransformer INSTANCE = new AliasToEntityOrderedMapResultTransformer();
/**
* Disallow instantiation of AliasToEntityOrderedMapResultTransformer .
*/
private AliasToEntityOrderedMapResultTransformer () {
}
/**
* {@inheritDoc}
*/
public Object transformTuple(Object[] tuple, String[] aliases) {
/* please note here LinkedHashMap is used so hopefully u ll get ordered key */
Map result = new LinkedHashMap(tuple.length);
for ( int i=0; i<tuple.length; i++ ) {
String alias = aliases[i];
if ( alias!=null ) {
result.put( alias, tuple[i] );
}
}
return result;
}
/**
* {@inheritDoc}
*/
public boolean isTransformedValueATupleElement(String[] aliases, int tupleLength) {
return false;
}
/**
* Serialization hook for ensuring singleton uniqueing.
*
* @return The singleton instance : {@link #INSTANCE}
*/
private Object readResolve() {
return INSTANCE;
}
}
顺便说一句,您的逻辑不应该取决于它出现在结果映射中的键的顺序。