報錯，求救 No database selected
### The error may exist in com/imooc/config/Message.xml
### The error may involve defaultParameterMap
### The error occurred while setting parameters
### SQL: SELECT * FROM message WHERE 1=1
### Cause: java.sql.SQLException: No database selected
2016-12-15
configuration.xml文件中：
<property name="url" value="jdbc:mysql://127.0.0.1:3306/micro_message"/>
是否正確。最好把configuration.xml和Message.xml貼出來
2016-12-15
沒有可選擇的數據庫