在java中捕获memcache异常

时间:2016-05-09 13:14:42

标签: java memcached spymemcached

我正在使用spymemcached-2.8.4.jar和jdk.1.7。

这是我的代码

try {

     MemcachedClient client = new MemcachedClient(...);

     client.set('name', 1000, 'some_name');

}catch(Exception ex){
     System.out.println("Exception occurred");
     System.out.println(ex.getMessage());
     ex.printStackTrace();

     logExceptionInDB(ex);
}

在我的scansion中,我的memcached机器没有运行,所以它在控制台中打印以下异常,

java.net.ConnectException: Connection refused
    at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
    at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:735)
    at net.spy.memcached.MemcachedConnection.handleIO(MemcachedConnection.java:369)
    at net.spy.memcached.MemcachedConnection.handleIO(MemcachedConnection.java:242)
    at net.spy.memcached.MemcachedConnection.run(MemcachedConnection.java:836)

但我想抓住这个,除了把它写在数据库中。如何捕获此异常?

1 个答案:

答案 0 :(得分:1)

您无法捕获帖子中提到的异常,因为它已被spymemcached本身捕获,您只能看到日志,MemcachedConnection.java中的相关代码是:

catch (ConnectException var5) {
            this.getLogger().info("Reconnecting due to failure to connect to %s", new Object[]{node, var5});
            this.queueReconnect(node);
        }

之后会尝试重新连接,因此请确保您的配置正确 实际上,您可以捕获set方法产生的异常:

    OperationFuture<Boolean> future = client.set("name", 1000, "some_name");
    Boolean result = future.get(50, TimeUnit.MILLISECONDS);

假设一次操作的超时时间为50毫秒,经过一段时间后,您将获得CheckedOperationTimeoutException