[英]spring-boot:jdbc re-connection after db outage
i'm using spring-boot and datasource with jdbc template (postgres). 我正在使用带有jdbc模板的spring-boot和datasource(postgres)。 in my service i do 在我的服务中我做
@Autowired
public MyDao(DataSource dataSource) {
this.jdbcTemplate = new JdbcTemplate(dataSource);
}
and later jdbcTemplate().query(...);
以后jdbcTemplate().query(...);
. 。 all works as expected but when i restart db, it stops working. 一切都按预期工作,但当我重新启动数据库时,它停止工作。 looks like datasource doesn't reconnect. 看起来像数据源不重新连接。 i got: 我有:
org.postgresql.util.PSQLException: This connection has been closed.
i got same error when i add: 我添加时出现同样的错误:
spring:
datasource:
testOnBorrow: true
validationQuery: select 1
how to make datasource reconnect automatically? 如何自动重新连接数据源?
actually i found it does reconnect after adding: 实际上我发现它添加后重新连接:
spring:
datasource:
testOnBorrow: true
validationQuery: select 1
i just needed to wait the default validationInterval
that is 30sec 我只需要等待30秒的默认validationInterval
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