Question

我在谷歌应用引擎和云sql中开发应用程序我用java jpa eclipselink编写服务器。每天几分钟我得到这个例外： “连接关闭后不允许操作” 几分钟后，异常就消失了我如何解决异常

是的，我在Google上搜索此异常，但未找到答案

附件是我的堆栈跟踪

exception:Exception [EclipseLink-4002] (Eclipse Persistence Services 
- 2.5.0.v20130507-3faac2b): 
org.eclipse.persistence.exceptions.DatabaseException 
(LoggerHelper.java:20)
Internal Exception: 
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: 
No operations allowed after connection closed.
Error Code: 0
Call: SELECT users.*, organizationUsers.id as 
managementOrganizationUserId, 
organizationUsers.managementOrganizationId,organizationUsers.userId 
FROM ManagementOrganizationUsersTable as organizationUsers LEFT JOIN 
UsersTable as users  ON(users.id=organizationUsers.userId AND 
users.userRoleType=?) WHERE 
organizationUsers.managementOrganizationId=? AND users.userRoleType=? 
GROUP BY 
organizationUsers.id,organizationUsers.managementOrganizationId, 
organizationUsers.userId ORDER BY firstName  ASC  LIMIT 20 OFFSET 0
bind => [3 parameters bound]
Query: ResultSetMappingQuery(sql="SELECT users.*, 
organizationUsers.id as 
managementOrganizationUserId, 
organizationUsers.managementOrganizationId,organizationUsers.userId 
FROM ManagementOrganizationUsersTable as organizationUsers LEFT JOIN 
UsersTable as users  ON(users.id=organizationUsers.userId AND 
users.userRoleType=?) WHERE 
organizationUsers.managementOrganizationId=? AND users.userRoleType=? 
GROUP BY 
organizationUsers.id,organizationUsers.managementOrganizationId, 
organizationUsers.userId ORDER BY firstName  ASC  LIMIT 20 OFFSET 0")

“您的连接设置是什么”

<properties>
        <property name="javax.persistence.jdbc.user" value="XXXX" />
        <property name="javax.persistence.jdbc.password" value="XXXX" />
        <property name="eclipselink.ddl-generation" value="create-tables" />
        <property name="eclipselink.connection-pool.node2.max" value="32"/>
    </properties>

“在不活动后，您的网络连接是否在您的数据源中被杀死” 我不明白这个问题谢谢

get error连接关闭后不允许任何操作

0 个答案: