要引入
import org.hibernate.annotations.Cache;
在类前面添加:
@Cache(usage= CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
可选项有:
read-only
read-write
nonstrict-read-write
transactional
完整示例:
package com.hlcg.main.bean; import org.hibernate.annotations.Cache;
import org.hibernate.annotations.CacheConcurrencyStrategy; import javax.persistence.*; /**
* Created with IntelliJ IDEA.
* User: HYY
* Date: 13-10-20
* Time: 下午1:04
* To change this template use File | Settings | File Templates.
*/
@Entity
@Table(name = "hl_key_value")
@Cache(usage= CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class KeyValue {
private Integer id;//主键
private String key;
private String value;
private Integer type;//类型
private String description;//描述、简介 @Id
@SequenceGenerator(name = "increment")
@GeneratedValue(strategy = GenerationType.AUTO, generator = "increment")
public Integer getId() {
return id;
} public void setId(Integer id) {
this.id = id;
} @Column(name = "`key`", unique = true,nullable=false, length = 200)
public String getKey() {
return key;
} public void setKey(String key) {
this.key = key;
} @Column(name = "`value`", length = 3000)
public String getValue() {
return value;
} public void setValue(String value) {
this.value = value;
} @Column(name = "`type`")
public Integer getType() {
return type;
} public void setType(Integer type) {
this.type = type;
} @Column(length = 300)
public String getDescription() {
return description;
} public void setDescription(String description) {
this.description = description;
}
}
注意key,value都是数据库的关键字 要加上``才行。