for循环不会运行正确的次数 - Java

Question

我有一个非常奇怪的问题，我从未遇到过。我有一个字符串的ArrayList，其大小通常在800以上，具体取决于输入。但是，对于for-each循环或经典的for循环，循环只运行大约3-5次。 ArrayList填充了ssh输出行。我需要查看输出，连接字符串，并将它们放在数据库中。

processLogs方法（问题发生的地方）

public void processLogs(List<String> logs) {
        try {
            Connection conn = DMConnector.getDMConnection();
            PreparedStatement statement = conn.prepareStatement("INSERT INTO Logs (to_address, status, smtp_transac, log_timestamp) VALUES (?,?,?,?)");

            System.out.println(logs.size());
            String to_address;
            String status;
            String smtp_transac;
            String timestamp;

            for (String log : logs) {
                to_address = log.split(" <")[1].split("> ")[0];
                status = log.split(" ")[2];
                smtp_transac = log.split(">:")[1];
                timestamp = log.split(" ")[0] + log.split(" ")[1];

                statement.setString(1, to_address);
                statement.setString(2, status);
                statement.setString(3, smtp_transac);
                statement.setString(4, timestamp);
                statement.executeUpdate();

                System.out.println("toAdd = " + to_address + " status= " + status + " smtp_transac = " + smtp_transac + "\n");
            }

            statement.close();
            conn.close();
        } catch (Exception ex) {
            System.out.println(ex.getMessage());
        }
    }

运行上面的代码后，我只会在数据库中输入几行，而我的System.out只会多次打印。我也尝试使用带有statement.executeBatch（）的statement.addBatch（）和没有anvil的statement.executeQuery（）。

以下是从控制台获取SSH线路的方法：

public List<String> getLogs() {


    String remoteHostUserName = "";
    String remoteHostPassword = "";
    String hostIP = "";
    List<String> results = new ArrayList<String>();

    JSch jsch = new JSch();
    try {

        Session session = jsch.getSession(remoteHostUserName, hostIP, 22);

        Properties config = new Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config);

        // Skip prompting for the password info and go direct...
        session.setPassword(remoteHostPassword);
        session.connect();

        String command = "hvmail_report -q all --last '1 min' -a --show-address --show-mtaid --show-time | sort";

        Channel channel = session.openChannel("exec");
        ((ChannelExec) channel).setCommand(command);

        ((ChannelExec) channel).setErrStream(System.err);

        InputStream in = channel.getInputStream();

        System.out.println("Connect to session...");
        channel.connect();

        byte[] tmp = new byte[1024];
        while (true) {
            while (in.available() > 0) {
                int i = in.read(tmp, 0, 1024);
                if (i < 0) {
                    break;
                }
                //System.out.println(new String(tmp, 0, i));

                Collections.addAll(results, new String(tmp, 0, i).split("\r\n|\r|\n"));
            }
            if (channel.isClosed()) {
                System.out.println("exit-status: " + channel.getExitStatus());
                break;
            }
            try {
                Thread.sleep(1000);
            } catch (Exception ee) {
                ee.printStackTrace();
            }
        }
        channel.disconnect();
        session.disconnect();

        if (in.markSupported()){
            in.reset();
        }


    } catch (Exception e) {
        System.out.println(e);
    }
    return results;
}

我唯一猜到为什么会发生这种情况与getLogs（）方法有关。