大神帮忙看下这个 空指针异常 怎么解决
java.lang.NullPointerException
at com.ids.emr.client.technician.shared.models.plan.orderlabtest.OrderLabExaminationModel.getDisplayName(OrderLabExaminationModel.java:114)
at com.ids.emr.client.technician.shared.models.plan.orderlabtest.OrderLabExaminationModel.toString(OrderLabExaminationModel.java:134)
@Override
public String getDisplayName() {
return labExam.getDisplayName() + " - " + labTestTime.getDisplayName();
}