解决（springboot项目）mysql表名大写，造成jpa Table doesn't exist问题

一般实体类中的属性, 如contentType会被hibernate默认映射为content_type，如果数据库中的字段是contenttype则会不匹配

 

这个问题有2种解决方法：

我的报错是：

 java.sql.SQLSyntaxErrorException: Table 'gaei_ms.gaei_work_task' doesn't exist

方法一：

转自：https://confluence.atlassian.com/fishkb/table-xxx-doesn-t-exist-error-with-mysql-server-302810019.html

1.  
   2012-09-05 10:12:30,728 ERROR [btpool0-472 ] fisheye.app TotalityFilter-logExceptionDetails - Exception "com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'fecru.AO_B434B9_WEB_HOOK' doesn't exist" (net.java.ao.sql.ActiveObjectSqlException) while processing "/plugins/servlet/webhooks/list" (Referer:"https://fisheye.bln.native-instruments.de/admin/viewServerSettings.do")
2.  
   net.java.ao.sql.ActiveObjectSqlException: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'fecru.AO_B434B9_WEB_HOOK' doesn't exist
3.  
   at com.atlassian.activeobjects.internal.EntityManagedActiveObjects.find(EntityManagedActiveObjects.java:114)
4.  
   at com.atlassian.activeobjects.osgi.DelegatingActiveObjects.find(DelegatingActiveObjects.java:71)
5.  
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
6.  
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
7.  
   ...
8.  
   Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'fecru.AO_B434B9_WEB_HOOK' doesn't exist

原因：

MySQL对lower_case_table_names使用区分大小写的表名比较设置  （可能值为'0'）。但是，FishEye在表名  FE-4276中不一致-数据库表OPEN的大小写不一致。您可以使用以下查询确认设置： 

show variables like 'lower_case_table_names'; 

解决：

1.  在MySQL中设置  lower_case_table_names的值为'0'
2. 重新启动MySQL和FishEye / Crucible。

 

方法二：

我的情况是springboot项目，配置文件的改法略有不同：

我的改法是在配置文件中加上这一行：

spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl

以下转自：https://blog.csdn.net/Halleycomett/article/details/78638639

报错信息

1.  
   org.springframework.dao.InvalidDataAccessResourceUsageException: could not extract ResultSet; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not extract ResultSet
2.  
    
3.  
    
4.  
   Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table XXX doesn't exist

报错原因调查

mysql里实际表名都是大写

尝试在entity上标记表名大写，实际测试无效，仍然找不到表

1.  
   @Entity
2.  
   @Data
3.  
   @Table(name = "T_BASE_ORDER_PRINT_CLIENT")
4.  
   public class MerchantPrinter {
5.  
    
6.  
   @Id
7.  
   @Column(name = "print_client_id")
8.  
   private String id;
9.  
    
10.  
    @Column(name = "merchant_id")
11.  
    private String merchantId;
12.  
     
13.  
    private String imei;
14.  
     
15.  
    }

最终的解决方案

1.  
   在spring jpa配置中增加physical-strategy配置解决问题
2.  
    
3.  
   spring:
4.  
   datasource:
5.  
   driver- class-name: com.mysql.jdbc.Driver
6.  
   url: jdbc:mysql: //XXX:3306/dbname
7.  
   username: root
8.  
   password: *******
9.  
   schema:
10.  
    jpa:
11.  
    hibernate:
12.  
    ddl-auto: none
13.  
    naming:
14.  
    physical-strategy: org .hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
15.  
    show-sql: true

physical naming strategy ：used to convert a “logical name” (either implicit or explicit) name of a table or column into a physical name (e.g. following corporate naming guidelines) 
physical naming strategy：物理命名策略，用于转换“逻辑名称”(隐式或显式)的表或列成一个物理名称

 

 

https://blog.csdn.net/u011314442/article/details/80395579