JCache只缓存部分字段

项目中使用的JCache缓存实体，发现每次缓存时存进去了实体，取出的时候字段有些是空的。

具体环境为

Springboot v2.01

JCache（ehcache 3.4.0）

jdk 1.8.0_201

maven 3.6.0

 

最开始以为是取的时候无法取出父类的字段（实体继承了一个父类，空的字段都是父类的字段，所以定位到取的问题）。

 

 1 @MappedSuperclass
 2 @Data
 3 //@Entity
 4 public class AlertRuleSuperBean {
 5     /**
 6      * 报警规则主键
 7      */
 8     @Id
 9     @GeneratedValue(strategy = GenerationType.IDENTITY)
10     @Column(name = "alert_rule_id")
11     protected Integer alertRuleId;
12 }

 

决定手动赋值

 1 @Service
 2 @EnableCaching
 3 public class CacheServiceImpl implements CacheService {
 4 
 5     @Override
 6     @Cacheable(key = "#key",cacheNames = "dtuRule")
 7     public AlertRuleProjectBean doDtuRule(String key, AlertRuleProjectBean bean) {
 8         System.out.println("I am a doDtuRule!key is "+ key);
 9         //只缓存子类bug，所以手动赋值
10         AlertRuleProjectBean resultBean=new AlertRuleProjectBean();
11         resultBean.setDtuEventTimestamp(bean.getDtuEventTimestamp());
12         resultBean.setProjectId(bean.getProjectId());
13         resultBean.setAlertRuleMax(bean.getAlertRuleMax());
14         resultBean.setAlertRule(bean.getAlertRule());
15         resultBean.setAlertRuleStatus(bean.getAlertRuleStatus());
16         resultBean.setAlertRuleMin(bean.getAlertRuleMin());
17         resultBean.setDtu_data_id(bean.getDtu_data_id());
18         resultBean.setAlertConditionType(bean.getAlertConditionType());
19         resultBean.setAlertPriority(bean.getAlertPriority());
20         resultBean.setAlertRuleId(bean.getAlertRuleId());
21         resultBean.setAlertRuleName(bean.getAlertRuleName());
22         resultBean.setSmoothTime(bean.getSmoothTime());
23         resultBean.setAlertType(bean.getAlertType());
24         resultBean.setIsProjectUserVisual(bean.getIsProjectUserVisual());
25         resultBean.setRuleStatus(bean.getRuleStatus());
26         resultBean.setTimestamp(bean.getTimestamp());
27         return resultBean;
28     }
29 
30     @Override
31     @CacheEvict(key="#key",condition = "#key!='mfb'",cacheNames = "dtuRule",allEntries = false)
32     public void removeDtuRule(String key) {
33         System.out.println("cache removed!key is "+key);
34 
35     }
36 }

 

赋值后仍然是部分为空，完全没有效果！

试着取消继承（将继承的一些父类字段手动copy到子类，取消extend），问题解决！

 

标签：AlertRuleProjectBean,JCache,缓存,bean,resultBean,key,父类,部分,public
来源： https://www.cnblogs.com/dzxw2371/p/10535039.html