JDBC收集

https://www.cis.upenn.edu/~bcpierce/courses/629/jdkdocs/guide/jdbc/getstart/mapping.doc.html

https://www.tutorialspoint.com/jdbc/jdbc-db-connections.htm

https://dev.mysql.com/doc/connector-j/5.1/en/connector-j-reference-type-conversions.html

http://www.oracle.com/technetwork/java/javase/jdbc/index.html

https://db.apache.org/ojb/docu/guides/jdbc-types.html

http://www.mysqltutorial.org/jdbc-overview/