PolarDB连接数据库报错，怎么解决？
PolarDB连接数据库报错，怎么解决？024-07-26 12:07:19,362 ERROR [org.springframework.web.servlet.DispatcherServlet] - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'copsController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.thinkgem.jeesite.modules.sm.service.SmVisitachievementService com.thinkgem.jeesite.common.guangfaBank.controller.CopsController.smVisitachievementService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'smVisitachievementService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.thinkgem.jeesite.modules.sm.service.SmContractLogService com.thinkgem.jeesite.modules.sm.service.SmVisitachievementService.contractLogService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'smContractLogService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.thinkgem.jeesite.modules.act.service.ActTaskService com.thinkgem.jeesite.modules.sm.service.SmContractLogService.actTaskService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'actTaskService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.activiti.engine.ProcessEngine com.thinkgem.jeesite.modules.act.service.ActTaskService.processEngine; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngineFactory': FactoryBean threw exception on object creation; nested exception is java.lang.NullPointerException
at org.springframework.beans.factory.anno
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阿里云关系型数据库主要有以下几种：RDS MySQL版、RDS PostgreSQL 版、RDS SQL Server 版、PolarDB MySQL版、PolarDB PostgreSQL 版、PolarDB分布式版 。
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