使用jdbc連接postgresql數(shù)據(jù)庫時(shí)報(bào)錯(cuò)如下： org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (????????: ?????? "uav_test " ??????) ### The error may exist in file [G:\Uav\NewMavenDemo\target\classes\mapper\UserMapper.xml] ### The error may involve UserMapper.getUserInfo ### The error occurred while executing a query ### Cause: org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is org.apache.commons.dbcp.SQLNestedException: Cannot create PoolableConnectionFactory (????????: ?????? "uav_test " ??????) at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:79) at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:447) at com.sun.proxy.$Proxy27.selectList(Unknown Source) 關(guān)鍵的報(bào)錯(cuò)信息： Cannot create PoolableConnectionFactory (????????: ?????? "uav_test " ??????) 連接的參數(shù)如下： #Postgresql driver=org.postgresql.Driver url=jdbc:postgresql://localhost:5432/uav_test username=postgres password=root dialect=postgresql 當(dāng)我把postgresql數(shù)據(jù)庫改為使用mysql時(shí)就沒有問題，mysql時(shí)的參數(shù)： driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/mysql username=root password=root dialect=mysql 不太明白為什么會(huì)出現(xiàn)此種情況