?? abstractentity.java
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package net.jeffrey.hibernate;import javax.persistence.GeneratedValue;import javax.persistence.GenerationType;import javax.persistence.Id;import javax.persistence.MappedSuperclass;/** * 實體類的抽象基類,定義了id字段 * @author jeffrey */@MappedSuperclasspublic abstract class AbstractEntity { @Id @GeneratedValue(strategy = GenerationType.AUTO) protected Integer id; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; }}
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