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2023年12月22日发(作者:accepted原型)

} catch (Exception e) { throw new ExceptionInInitializerError("驱动加载失败"); } } @Override public synchronized Connection getConnection() throws SQLException { if(()>0){ n("池中的连接如下"); int i=1; for(Connection conn : pool){ n(conn+"----"+i++); }

final Connection conn = (); Connection proxyConn = (Connection)xyInstance(ss().getClassLoader(), ss().getInterfaces(),

new InvocationHandler(){ @Override public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { if("close".equals(e())){

return (conn); }else{ return (conn, args); } }} );

return proxyConn; }else{ throw new RuntimeException("服务器忙"); } } @Override public Connection getConnection(String username, String password) throws SQLException { // TODO Auto-generated method stub return null; } @Override public PrintWriter getLogWriter() throws SQLException { // TODO Auto-generated method stub return null; } @Override public int getLoginTimeout() throws SQLException { // TODO Auto-generated method stub return 0; } @Override public void setLogWriter(PrintWriter out) throws SQLException { // TODO Auto-generated method stub

} @Override public void setLoginTimeout(int seconds) throws SQLException { // TODO Auto-generated method stub

} @Override public boolean isWrapperFor(Class iface) throws SQLException { // TODO Auto-generated method stub return false; } @Override public T unwrap(Class iface) throws SQLException { // TODO Auto-generated method stub return null; }}


本文标签: 驱动 原型 失败 作者