Question

spring mvc中的@Entity是什么意思?

Answer 1

标注该类为实体类

Answer 2

例如
@Entity
public Class JavaBean{
}
标注该类为实体类。

Answer 3

给你个例子，实体类的注解代码如下：
/**
* 反事故措施
*
* 使用JPA annotation定义ORM关系. 使用Hibernate annotation定义JPA 1.0未覆盖的部分.
*
* @author chen
*/
@Entity
// 表名与类名不相同时重新定义表名.
@Table(name = "T_ACCIDENT_MEASURES")
public class Accidents extends IdEntity {
private String works; //应完成情况
private String worksed;//工作完成情况
private String jcstate; //检查状态
private String handleuser;//操作人
private String confuser;//部门审核
private String sjconfuser;//生计审核
private String tbtime;// 填报时间
private String zgstate;//整改状态
private String zgcs;//整改措施
private String zgwcqk;//整改完成情况
private String zgtime;//整改时间
private String zgr;//整改人
private String zgbmsh;//整改部门审核
private String zgysr;//整改验收
private String jdstate;//节点状态
private String isdel;//删除标志 1正常 2删除
private String bzhu;//备注
private String deptes; //部门
/**
* @Lob适用于标注字段类型为Clob和Blob类型。
* Clob（Character Large Ojects）类型是长字符串类型，
* 映射为实体中的类型可为char[]、Character[]、或者String类型。
* Blob（Binary Large Objects）类型是字节类型，映射为实体中的类型可为byte[]、Byte[]、
* 或者实现了Serializable接口的类。
* 因为这两种类型的数据一般占用的内存空间比较大，所以通常使用惰性加载的方式
* ，所以一般都要与@Basic标记同时使用，设置加载方式为FetchType.LAZY。
* @return
*/
@Lob
@Basic(fetch = FetchType.LAZY)
public String getWorks() {
return works;
}
public void setWorks(String works) {
this.works = works;
}

@Lob
@Basic(fetch = FetchType.LAZY)
public String getBzhu() {
return bzhu;
}
public void setBzhu(String bzhu) {
this.bzhu = bzhu;
}

public String getDeptes() {
return deptes;
}
public void setDeptes(String deptes) {
this.deptes = deptes;
}
public String getJcstate() {
return jcstate;
}
public void setJcstate(String jcstate) {
this.jcstate = jcstate;
}

public String getHandleuser() {
return handleuser;
}
public void setHandleuser(String handleuser) {
this.handleuser = handleuser;
}
public String getConfuser() {
return confuser;
}
public void setConfuser(String confuser) {
this.confuser = confuser;
}
public String getZgstate() {
return zgstate;
}
public void setZgstate(String zgstate) {
this.zgstate = zgstate;
}
public String getTbtime() {
return tbtime;
}
public void setTbtime(String tbtime) {
this.tbtime = tbtime;
}
public String getZgtime() {
return zgtime;
}
public void setZgtime(String zgtime) {
this.zgtime = zgtime;
}
public String getJdstate() {
return jdstate;
}
public void setJdstate(String jdstate) {
this.jdstate = jdstate;
}
public String getIsdel() {
return isdel;
}
public void setIsdel(String isdel) {
this.isdel = isdel;
}
public String getWorksed() {
return worksed;
}
public void setWorksed(String worksed) {
this.worksed = worksed;
}
public String getSjconfuser() {
return sjconfuser;
}
public void setSjconfuser(String sjconfuser) {
this.sjconfuser = sjconfuser;
}
public String getZgcs() {
return zgcs;
}
public void setZgcs(String zgcs) {
this.zgcs = zgcs;
}
public String getZgwcqk() {
return zgwcqk;
}
public void setZgwcqk(String zgwcqk) {
this.zgwcqk = zgwcqk;
}
public String getZgr() {
return zgr;
}
public void setZgr(String zgr) {
this.zgr = zgr;
}
public String getZgbmsh() {
return zgbmsh;
}
public void setZgbmsh(String zgbmsh) {
this.zgbmsh = zgbmsh;
}
public String getZgysr() {
return zgysr;
}
public void setZgysr(String zgysr) {
this.zgysr = zgysr;
}
public Accidents() {
super();
}

}