当前,我们必须通过SSH隧道访问我们的Oracle数据库。为了做到这一点,我们必须确保在将应用程序部署到Tomcat / Glassfish / etc之前,腻子或等效的程序/脚本正在服务器上运行此调整。

有没有人找到一种让Java透明处理此隧道的方法?也许jdbc驱动程序会比其本身包装另一个jdbc驱动器,而您恰恰在Java中为您处理隧道?

最佳答案

我的解决方案是在我的应用程序服务器启动时使用JCraft http://www.jcraft.com/jsch/中的Jsch打开隧道。当应用程序服务器关闭时,我关闭了隧道。我通过servlet上下文侦听器来完成此操作。

int findUnusedPort() {
        final int startingPort = 1025;
        final int endingPort = 1200;
        for (int port = 1025; port < 1200; port++) {
            ServerSocket serverSocket = null;
            try {
                serverSocket = new ServerSocket(port);
                return port;
            } catch (IOException e) {
                System.out.println("Port " + port + "is currently in use, retrying port " + port + 1);
            } finally {
                // Clean up
                if (serverSocket != null) try {
                    serverSocket.close();
                } catch (IOException e) {
                    throw new RuntimeException("Unable to close socket on port" + port, e);
                }
            }
        }
        throw new RuntimeException("Unable to find open port between " + startingPort + " and " + endingPort);
    }

private Session doSshTunnel(int tunnelPort) {
    // SSH Tunnel
    try {
        final JSch jsch = new JSch();
        sshSession = jsch.getSession("username", "sshhost", 22);
        final Hashtable<String, String> config = new Hashtable<String, String>();
        config.put("StrictHostKeyChecking", "no");
        sshSession.setConfig(config);
        sshSession.setPassword("password");

        sshSession.connect();

        int assigned_port = sshSession.setPortForwardingL(tunnelPort, remoteHost, remotePort);

        return sshSession;
    } catch (Exception e) {
        throw new RuntimeException("Unable to open SSH tunnel", e);
    }
}

关于jdbc - 通过SSH隧道连接到jdbc中的Oracle数据库,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/3524275/

10-13 05:00