开发过程遇到的问题

Posted 2020-08-08 Aaronqcd

1.hibernate 原生sql查询问题：

 1 public void getNurseStatInfo() {
 2         String sql = "select \'col018\' id,count(*) count  from PHC_RECORD_CARD t where t.phc_model_def_id=\'932a9b81000080810af4\' "
 3                 + "union select \'col024\' id,count(*) count from PHC_RECORD_CARD t where t.phc_model_def_id=\'7ca18efa000b0f7d44dc\' "
 4                 + "union select \'col032\' id,count(*) count from PHC_RECORD_CARD t where t.phc_model_def_id=\'27f913b6000080e515e0\' "
 5                 + "union select \'col056\' id,count(*) count from PHC_RECORD_CARD t where t.phc_model_def_id=\'243c447a00000f7d6958\' "
 6                 + "union select \'col062\' id,count(*) count from PHC_RECORD_CARD t where t.phc_model_def_id=\'f786355d001c6a81ea34\' "
 7                 + "union select \'col027\' id,count(*) count from PHC_RECORD_CARD t where t.phc_model_def_id=\'3f03ade200020f7d4b1c\' "
 8                 + "union select \'col059\' id,count(*) count from PHC_RECORD_CARD t where t.phc_model_def_id=\'0305c2e600d57f1509a0\' ";
 9         List<NurseStatInfo> statList = phcRecordCardDao.getEntityManager().createNativeQuery(sql, NurseStatInfo.class).getResultList();
10         System.out.println("-----------------------------");
11         for (NurseStatInfo info : statList) {
12             System.out.println(info.getId());
13             System.out.println(info.getCount());
14         }
15     }

View Code

 1 import javax.persistence.Entity;
 2 import javax.persistence.Id;
 3 
 4 @Entity
 5 public class NurseStatInfo {
 6     @Id
 7     private String id;
 8     private int count;
 9     
10     public String getId() {
11         return id;
12     }
13     public void setId(String id) {
14         this.id = id;
15     }
16     public int getCount() {
17         return count;
18     }
19     public void setCount(int count) {
20         this.count = count;
21     }
22     
23 }

View Code

NurseStatInfo类中需要加@Entity、@Id两个注解，不然会报以下错误：

Caused by: org.hibernate.MappingException: Unknown entity

参考网站：http://stackoverflow.com/questions/30595445/how-to-map-a-native-query-to-a-pojo-when-i-do-not-have-any-entity-on-my-project