在自动触发的默认监听器之前触发Hibernate自定义事件监听器

我有一个为您创建人实体数据历史的示例。希望能帮助到你。

我必须建立一个 辅助界面 ：

public interface DataHistoryAware {    public DataHistory getDataHistory();    public void setDataHistory(DataHistory dataHistory);}

这是 侦听器的实现 ：

public class DataHistoryListener {   @PrePersist    public void setCreateDataHistory(DataHistoryAware model) {        //set creationDate        DataHistory dataHistory = model.getDataHistory() == null ? new DataHistory() : model.getDataHistory();        dataHistory.setCreationDate(new Date());        model.setDataHistory(dataHistory);     }@PostUpdate    public void setUpdateDataHistory(DataHistoryAware model) {        DataHistory dataHistory = model.getDataHistory() == null ? new DataHistory() : model.getDataHistory();        dataHistory.setLastModificationDate(new Date());        model.setDataHistory(dataHistory);    }}

该 人士实体 ：

@Entity@EntityListeners(DataHistoryListener.class)@Table(name="person")public class Person implements Serializable, DataHistoryAware {@Column(name = "full_name", length = 255, nullable = false)    private String fullName;@oneToOne(cascade = CascadeType.PERSIST)@JoinColumn(name = "data_history_id", nullable = false)private DataHistory dataHistory;public String getFullName() {        return this.fullName;    }    public void setFullName(String fullName) {        this.fullName = fullName;    }public DataHistory getDataHistory() {        return dataHistory;    }    public void setDataHistory(DataHistory dataHistory) {        this.dataHistory = dataHistory;    }}

此实现在持久之前为人实体创建数据历史记录，并在合并之前对其进行更新。datahistory属性具有非空约束，因此这与联系人实体的非空属性的问题相同。希望它有用。