QueueSender (Java EE 5)

通常，Queue 是在创建 QueueSender 时指定的。在这种情况下，尝试使用未标识的 QueueSender 的 send 方法将抛出 java.lang.UnsupportedOperationException。

如果使用未标识的 Queue 创建 QueueSender，则尝试使用假定 Queue 已标识的 send 方法将抛出 java.lang.UnsupportedOperationException。

在执行其 send 方法期间，客户端内的其他线程不得更改消息。如果修改了消息，则 send 的结果是不确定的。

消息发送后，客户端可以保留并修该它，而不会影响已经发送的消息。同一个消息对象可以被发送多次。

以下消息头作为发送消息的一部分设置：JMSDestination、JMSDeliveryMode、JMSExpiration、JMSPriority、JMSMessageID 和 JMSTimeStamp。发送消息时，忽略这些消息头的值。send 完成后，这些消息头保持发送该消息的方法指定的值。如果通过 MessageProducer.setDisableMessageID 或 MessageProducer.setDisableMessageTimestamp 方法显式禁用了这些消息头的该设置，则 send 方法可以不设置 JMSMessageID 和 JMSTimeStamp。

创建 MessageProducer 所提供的功能与创建 QueueSender 所提供的功能相同。创建新代码时建议使用 MessageProducer 对象。提供 QueueSender 的目的是支持现有代码。

A client uses a QueueSender object to send messages to a queue.

Normally, the Queue is specified when a QueueSender is created. In this case, an attempt to use the send methods for an unidentified QueueSender will throw a java.lang.UnsupportedOperationException.

If the QueueSender is created with an unidentified Queue, an attempt to use the send methods that assume that the Queue has been identified will throw a java.lang.UnsupportedOperationException.

During the execution of its send method, a message must not be changed by other threads within the client. If the message is modified, the result of the send is undefined.

After sending a message, a client may retain and modify it without affecting the message that has been sent. The same message object may be sent multiple times.

The following message headers are set as part of sending a message: JMSDestination, JMSDeliveryMode, JMSExpiration, JMSPriority, JMSMessageID and JMSTimeStamp. When the message is sent, the values of these headers are ignored. After the completion of the send, the headers hold the values specified by the method sending the message. It is possible for the send method not to set JMSMessageID and JMSTimeStamp if the setting of these headers is explicitly disabled by the MessageProducer.setDisableMessageID or MessageProducer.setDisableMessageTimestamp method.

Creating a MessageProducer provides the same features as creating a QueueSender. A MessageProducer object is recommended when creating new code. The QueueSender is provided to support existing code.

Version:

1.1 - February 2, 2002

Author:

Mark Hapner, Rich Burridge, Kate Stout

See Also:

MessageProducer, Session.createProducer(Destination), QueueSession.createSender(Queue)

public Queue getQueue() throws JMSException
获取与此 QueueSender 关联的队列。

return	此发送者的队列
Throws	JMSException: 如果 JMS 提供者由于某个内部错误无法获取此 QueueSender 的队列。

英文文档：

getQueue

Queue getQueue()
               throws JMSException

Gets the queue associated with this QueueSender.

Returns:

this sender's queue

Throws:

JMSException - if the JMS provider fails to get the queue for this QueueSender due to some internal error.

public void send(Message message) throws JMSException
将消息发送到队列。使用 QueueSender 的默认传送模式、优先级和生存时间。

message	要发送的消息
Throws	JMSException: 如果 JMS 提供者由于某个内部错误无法发送消息。
Throws	MessageFormatException: 如果指定了无效的消息。
Throws	InvalidDestinationException: 如果客户端将此方法与带有无效队列的 QueueSender 一起使用。
Throws	UnsupportedOperationException: 如果客户端将此方法与在创建时未指定队列的 QueueSender 一起使用。
See also	getDeliveryMode(), getTimeToLive(), getPriority()

英文文档：

send

void send(Message message)
          throws JMSException

Sends a message to the queue. Uses the QueueSender's default delivery mode, priority, and time to live.

Specified by:

send in interface MessageProducer

Parameters:

message - the message to send

Throws:

JMSException - if the JMS provider fails to send the message due to some internal error.

MessageFormatException - if an invalid message is specified.

InvalidDestinationException - if a client uses this method with a QueueSender with an invalid queue.

UnsupportedOperationException - if a client uses this method with a QueueSender that did not specify a queue at creation time.

See Also:

MessageProducer.getDeliveryMode(), MessageProducer.getTimeToLive(), MessageProducer.getPriority()

public void send(Message message, int deliveryMode, int priority, long timeToLive) throws JMSException
将消息发送到队列，指定传送模式、优先级和生存时间。

message	要发送的消息
deliveryMode	要使用的传送模式
priority	此消息的优先级
timeToLive	消息的生命周期（以毫秒为单位）
Throws	JMSException: 如果 JMS 提供者由于某个内部错误无法发送消息。
Throws	MessageFormatException: 如果指定了无效的消息。
Throws	InvalidDestinationException: 如果客户端将此方法与带有无效队列的 QueueSender 一起使用。
Throws	UnsupportedOperationException: 如果客户端将此方法与在创建时未指定队列的 QueueSender 一起使用。

英文文档：

send

void send(Message message,
          int deliveryMode,
          int priority,
          long timeToLive)
          throws JMSException

Sends a message to the queue, specifying delivery mode, priority, and time to live.

Specified by:

send in interface MessageProducer

Parameters:

message - the message to send

deliveryMode - the delivery mode to use

priority - the priority for this message

timeToLive - the message's lifetime (in milliseconds)

Throws:

JMSException - if the JMS provider fails to send the message due to some internal error.

MessageFormatException - if an invalid message is specified.

InvalidDestinationException - if a client uses this method with a QueueSender with an invalid queue.

UnsupportedOperationException - if a client uses this method with a QueueSender that did not specify a queue at creation time.

See Also:

Session.createProducer(javax.jms.Destination)

public void send(Queue queue, Message message) throws JMSException
将消息发送到未标识的消息生成方的队列。使用 QueueSender 的默认传送模式、优先级和生存时间。

通常，在创建时为消息生成方分配一个队列；但是，JMS API 也支持未标识的消息生成方，这需要在每次发送消息时提供队列。

queue	要将此消息发送到的队列
message	要发送的消息
Throws	JMSException: 如果 JMS 提供者由于某个内部错误无法发送消息。
Throws	MessageFormatException: 如果指定了无效的消息。
Throws	InvalidDestinationException: 如果客户端将此方法与无效队列一起使用。
See also	getDeliveryMode(), getTimeToLive(), getPriority()

英文文档：

send

void send(Queue queue,
          Message message)
          throws JMSException

Sends a message to a queue for an unidentified message producer. Uses the QueueSender's default delivery mode, priority, and time to live.

Typically, a message producer is assigned a queue at creation time; however, the JMS API also supports unidentified message producers, which require that the queue be supplied every time a message is sent.

Parameters:

queue - the queue to send this message to

message - the message to send

Throws:

JMSException - if the JMS provider fails to send the message due to some internal error.

MessageFormatException - if an invalid message is specified.

InvalidDestinationException - if a client uses this method with an invalid queue.

See Also:

MessageProducer.getDeliveryMode(), MessageProducer.getTimeToLive(), MessageProducer.getPriority()

public void send(Queue queue, Message message, int deliveryMode, int priority, long timeToLive) throws JMSException
将消息发送到未标识的消息生成方的队列，指定传送模式、优先级和生存时间。

通常，在创建时为消息生成方分配一个队列；但是，JMS API 也支持未标识的消息生成方，这需要在每次发送消息时提供队列。

queue	要将此消息发送到的队列
message	要发送的消息
deliveryMode	要使用的传送模式
priority	此消息的优先级
timeToLive	消息的生命周期（以毫秒为单位）
Throws	JMSException: 如果 JMS 提供者由于某个内部错误无法发送消息。
Throws	MessageFormatException: 如果指定了无效的消息。
Throws	InvalidDestinationException: 如果客户端将此方法与无效队列一起使用。

英文文档：

send

void send(Queue queue,
          Message message,
          int deliveryMode,
          int priority,
          long timeToLive)
          throws JMSException

Sends a message to a queue for an unidentified message producer, specifying delivery mode, priority and time to live.

Typically, a message producer is assigned a queue at creation time; however, the JMS API also supports unidentified message producers, which require that the queue be supplied every time a message is sent.

Parameters:

queue - the queue to send this message to

message - the message to send

deliveryMode - the delivery mode to use

priority - the priority for this message

timeToLive - the message's lifetime (in milliseconds)

Throws:

JMSException - if the JMS provider fails to send the message due to some internal error.

MessageFormatException - if an invalid message is specified.

InvalidDestinationException - if a client uses this method with an invalid queue.

Copyright 2007 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.