BBS电子公告板 计算机网络课程设计

package bbs; import java.sql.*; import java.util.*; public class ConnManager { private Vector PoolNames = new Vector(); private Vector DriverNames = new Vector(); private Vector DbIds = new Vector(); private Vector UserNames = new Vector(); private Vector Passwords = new Vector(); private Vector MaxConns = new Vector(); private Hashtable ConnPools = new Hashtable(); public ConnManager() { PoolNames.addElement("bbs"); DriverNames.addElement("org.gjt.mm.mysql.Driver"); DbIds.addElement("jdbc:mysql://localhost:3306/bbs"); UserNames.addElement("root"); Passwords.addElement("123"); MaxConns.addElement("10"); createPool(); } private void createPool() { for(int i = 0; i<PoolNames.size();i++){ String PoolName = PoolNames.elementAt(i).toString(); String DriverName = DriverNames.elementAt(i).toString(); String DbId = DbIds.elementAt(i).toString(); String UserName = UserNames.elementAt(i).toString(); String Password = Passwords.elementAt(i).toString(); int Maxconn=0; try { Maxconn = Integer.parseInt(MaxConns.elementAt(i).toString()); } catch (NumberFormatException e) { e.printStackTrace(); } ConnPool Pool = new ConnPool(PoolName, DriverName, DbId,UseName, Password, Maxconn); ConnPools.put(PoolName, Pool); } } public Connection getConnection(String name) { ConnPool Pool = (ConnPool) ConnPools.get(name); if (Pool != null) return Pool.getConnection(); return null; } public void releaseConnection(String name, Connection con) { ConnPool pool = (ConnPool) ConnPools.get(name); if (pool != null) pool.releaseConnection(con); } public synchronized void destroyPool () { Enumeration allPools = ConnPools.elements(); while (allPools.hasMoreElements()) { ConnPool Pool = (ConnPool) allPools.nextElement(); Pool.destroyPool (); } } }