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ERROR 5088 --- [ main] o.a.e.impl.interceptor.CommandContext : Error while closing command context
 
org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.sql.SQLSyntaxErrorException: Table 'activiti.act_ge_property' doesn't exist
### The error may exist in org/activiti/db/mapping/entity/Property.xml
### The error may involve org.activiti.engine.impl.persistence.entity.PropertyEntityImpl.selectProperty-Inline
### The error occurred while setting parameters
### SQL: select * from ACT_GE_PROPERTY where NAME_ = ?
### Cause: java.sql.SQLSyntaxErrorException: Table 'activiti.act_ge_property' doesn't exist
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30) ~[mybatis-3.5.6.jar:3.5.6]

　因为mysql使用schema标识库名而不是catalog，因此mysql会扫描所有的库来找表，如果其他库中有相同名称的表，activiti就以为找到了，本质上这个表在当前数据库中并不存在。
设置nullCatalogMeansCurrent=true，表示mysql默认当前数据库操作，在mysql-connector-java 5.xxx该参数默认为true，在6.xxx以上默认为false，因此需要设置nullCatalogMeansCurrent=true　

yml数据源配置：

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url: jdbc:mysql://localhost:3306/ry-vue?useUnicode=true&characterEncoding=utf8&nullCatalogMeansCurrent=true&zeroDateTimeBehavior=convertToNull&useSSL=true&serverTimezone=GMT%2B8