实现一个异常处理器来捕获并处理连接中断异常。以下是一个示例：

ConnectionFactory cf = new ActiveMQConnectionFactory("tcp://localhost:61616");
Connection connection = cf.createConnection();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
MessageProducer producer = session.createProducer(session.createQueue("TEST.FOO"));
TextMessage message = session.createTextMessage("Hello world!");
producer.send(message);
producer.close();
message = null;
session.close();
connection.close();

try {
    // do something
} catch (Exception e) {
    if (e instanceof SQLException && e.getMessage().contains("The connection is closed")) {
        // connection was closed, attempt to reconnect
        ConnectionFactory cf = new ActiveMQConnectionFactory("tcp://localhost:61616");
        Connection connection = cf.createConnection();
        // create new session and producer
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageProducer producer = session.createProducer(session.createQueue("TEST.FOO"));
        // resend the message
        producer.send(message);
        producer.close();
        session.close();
        connection.close();
    } else {
        throw e;
    }
}

在这个示例中，如果在处理消息时发生连接关闭异常，异常处理器会捕获并检查异常消息中是否包含特定的字符串“The connection is closed”。如果是，在关闭连接的同时，创建一个新的连接、会话和生产者来重新发送消息。否则，让异常继续传递以进行其他处理。