JMS - 随笔分类 - huey2672

ActiveMQ(5.10.0) - Message Redelivery and DLQ Handling

摘要：When messages expire on the ActiveMQ broker (they exceed their time-to-live, if set) or can’t be redelivered, they’re moved to a dead-letter queue, so... 阅读全文

posted @ 2016-01-19 19:18 huey2672 阅读(1686) 评论(1) 推荐(0)

ActiveMQ(5.10.0) - Connection Configuration URI

摘要：An Apache ActiveMQ connection can be configured by explicitly setting properties on the ActiveMQConnection or ActiveMQConnectionFactory objects themse... 阅读全文

posted @ 2016-01-19 14:58 huey2672 阅读(500) 评论(0) 推荐(0)

ActiveMQ(5.10.0) - Spring Support

摘要：MavenDependency: org.apache.activemq activemq-all ${activemq.version} org.apache.activemq activemq-jaas... 阅读全文

posted @ 2016-01-15 11:39 huey2672 阅读(395) 评论(0) 推荐(0)

ActiveMQ(5.10.0) - Wildcards and composite destinations

摘要：In this section we’ll look at two useful features of ActiveMQ: subscribing to multiple destinations using wildcards, and publishing to multiple destin... 阅读全文

posted @ 2016-01-14 19:09 huey2672 阅读(651) 评论(0) 推荐(0)

ActiveMQ(5.10.0) - Building a custom security plug-in

摘要：If none of any built-in security mechanisms works for you, you can always build your own. Though these features should provide enough functionality fo... 阅读全文

posted @ 2016-01-14 12:35 huey2672 阅读(434) 评论(0) 推荐(0)

ActiveMQ(5.10.0) - Destination-level authorization

摘要：To build upon authentication, consider a use case requiring more fine-grained control over clients to authorize certain tasks. ActiveMQ provides two l... 阅读全文

posted @ 2016-01-13 18:28 huey2672 阅读(352) 评论(0) 推荐(0)

ActiveMQ(5.10.0) - Configuring the JAAS Authentication Plug-in

摘要：JAAS provides pluggable authentication, which means ActiveMQ will use the same authentication API regardless of the technique used to verify user cred 阅读全文

posted @ 2016-01-13 18:09 huey2672 阅读(665) 评论(0) 推荐(0)

ActiveMQ(5.10.0) - Configuring the Simple Authentication Plug-in

摘要：The easiest way to secure the broker is through the use of authentication credentials placed directly in the broker’s XML configuration file. Such fun 阅读全文

posted @ 2016-01-13 11:50 huey2672 阅读(392) 评论(0) 推荐(0)

JMS - Exceptions

摘要：The JMSExceptionJMS defines JMSException as the root class for exceptions thrown by JMS methods. JMSException is a checked exception and catching it p... 阅读全文

posted @ 2016-01-10 23:31 huey2672 阅读(524) 评论(0) 推荐(0)

JMS - Temporary Destination

摘要：Although sessions are used to create temporary destinations, this is only for convenience. Their scope is actually the entire connection. Their lifeti... 阅读全文

posted @ 2016-01-10 20:00 huey2672 阅读(268) 评论(0) 推荐(0)

ActiveMQ(5.10.0) - 删除闲置的队列或主题

摘要：方法一通过 ActiveMQ Web 控制台删除。方法二通过 Java 代码删除。ActiveMQConnection.destroyDestination(ActiveMQDestination destination)方法三通过配置 conf/activemq.xml，当broker 探测到闲置... 阅读全文

posted @ 2016-01-10 11:07 huey2672 阅读(4744) 评论(1) 推荐(0)

JMS - 事务性消息

摘要：JMS 事务遵从发送操作与接收操作相互分离的约定。下图显示的是一个事务性发送，其中一组消息要么能够保证全部到达消息服务器，要么连一条消息也不能保证到达消息服务器。从发送者的角度来看，JMS 提供者为这组消息提供了高速缓存，直到执行 commit() 为止。如果发生了故障，或者执行了 rollback... 阅读全文

posted @ 2016-01-10 00:12 huey2672 阅读(2258) 评论(0) 推荐(0)

JMS - ExceptionListener

摘要：If a JMS provider detects a problem with a connection, it will inform the connection’s ExceptionListener, if one has been registered. To retrieve an E... 阅读全文

posted @ 2016-01-09 18:59 huey2672 阅读(1077) 评论(0) 推荐(0)

JMS - ConnectionMetaData

摘要：A Connection provides a ConnectionMetaData object. This object provides the latest version of JMS supported by the provider as well as the provider’s ... 阅读全文

posted @ 2016-01-09 17:04 huey2672 阅读(325) 评论(0) 推荐(0)

ActiveMQ(5.10.0) - 使用 JDBC 持久化消息

摘要：1. 编辑 ACTIVEMQ_HOME/conf/activemq.xml。 2. 在ACTIVEMQ_HOME/li... 阅读全文

posted @ 2015-08-27 14:09 huey2672 阅读(779) 评论(0) 推荐(0)

JMS - 消息确认

摘要：消息确认机制消息确认协议是保证消息传送的关键所在，同时，支持确认也是 JMS API 语义的要求。以下将分别从消息生产者、消息服务器、消息消费者的角度，来考察消息确认机制。从消息生产者的角度考察在表象之下，TopicPublisher.publish() 或 QueueSender.send... 阅读全文

posted @ 2015-08-24 20:56 huey2672 阅读(348) 评论(0) 推荐(0)

JMS - 消息选择器

摘要：消息选择器将消息选择器应用在消费者，消费者就只会接受能通过过滤器的消息。消息选择器是基于 SQL-92 条件表达式语法的一个子集。消息选择器由三个元素组成：标识符、常量和标记运算符。标识符标识符就是表达式中被比较的那一部分。标识符必须是消息属性或者若干 JMS 消息头之一。可以用作标识符... 阅读全文

posted @ 2015-08-22 17:13 huey2672 阅读(585) 评论(0) 推荐(0)

ActiveMQ(5.10.0) - JNDI Support

摘要：1. Place the jndi.properties file on the classpath.java.naming.factory.initial = org.apache.activemq.jndi.ActiveMQInitialContextFactory # use the foll... 阅读全文

posted @ 2015-08-21 18:51 huey2672 阅读(394) 评论(0) 推荐(0)

JMS - QueueBrowser

摘要：QueueBrowser 是一个专用对象，提供提前浏览 Queue 上的排队消息的功能，而实际上并没有真正消费这些消息。这是点对点消息传送模型的独有特性。从 QueueBrowser 获得消息是该队列中消息的副本，而且并未认为会被消费——它们仅是用于浏览而已。还有，QueueBrowser 并不... 阅读全文

posted @ 2015-08-21 18:36 huey2672 阅读(957) 评论(0) 推荐(1)

JMS - Message

摘要：一条 JMS 消息包含三个部分：消息头、消息属性和消息体。消息头消息头提供了和消息有关的元数据，它描述了消息有谁创建、何时创建、数据的有效长度等信息。消息头还包含了描述消息目的地（主题或队列）的路由信息、消息如何被确认等另外一些信息。JMSDestination JMSDestination ... 阅读全文

posted @ 2015-08-19 15:39 huey2672 阅读(922) 评论(0) 推荐(0)

随笔分类 - JMS