如何关闭通过Spring创建的jdbc连接？

Question

I've built an application (app1) that looks at and records certain fields in a database. This application shares the database with another application (app2) that requires a solitary connection to it when starting up but is fine to allow other connections to the DB once it (app2) is started. In my application (app1), I have made a dao object using Spring to connect to the DB and evidently, the connection is never closed which causes app2 to crash upon start up. From what I've read, Spring is supposed to automatically handle opening and closing all of the DB connections it manages. I'm not sure of any code I could share to help paint a better picture of my problem but if some is needed, I'll post what I can. Thanks for any help.

Answer 1

如果您使用的是JDBC模板，则不必担心显式关闭连接，Spring将负责内部管理连接池以及从该池获取/释放连接。

Answer 2

When sharing connections between applications I would recommend using a connection pool. Opening and closing of connections could be done by declarative transaction demarcation via annotations (@Transactional).

http://faheemsohail.com/2012/01/configuring-c3p0-connection-pooling-with-spring-and-hibernate/

Answer 3

Would this work for you?

 public  void closeCon() {

  {
   if (con != null)
    try {
     con.close();

    } catch (SQLException e) {
     e.printStackTrace();
    }