public EngUseProc getEngUseProc(){
EngUseProc engUseProc;
try {
engUseProc= dataManager.loadValue("select eeup from ef_EngUseProc eeup " +
"where eeup.curState=:curState order by eeup.esn asc ",EngUseProc.class)
.parameter("curState",CURRENT_STATE_FLAG)
.one();
return engUseProc;
} catch (Exception e) {
return null;
}
}
这个属性为啥是空的,怎么解决