javax.jms.JMSConsumer#receiveNoWait ( )源码实例Demo

@Test
public void testReceiveNoWait() throws JMSException {
    JMSConsumer consumer = context.createConsumer(context.createTemporaryQueue());

    assertNull(consumer.receiveNoWait());

    consumer.close();

    try {
        consumer.receiveNoWait();
        fail("Should not be able to interact with closed consumer");
    } catch (IllegalStateRuntimeException ise) {}
}
 

@Test(timeout=20000)
public void testConsumerReceiveNoWaitThrowsIfConnectionLost() throws Exception {
    try (TestAmqpPeer testPeer = new TestAmqpPeer();) {
        JMSContext context = testFixture.createJMSContext(testPeer);

        testPeer.expectBegin();

        Queue queue = context.createQueue("queue");

        testPeer.expectReceiverAttach();
        testPeer.expectLinkFlow(false, notNullValue(UnsignedInteger.class));
        testPeer.expectLinkFlow(true, notNullValue(UnsignedInteger.class));
        testPeer.dropAfterLastHandler();

        final JMSConsumer consumer = context.createConsumer(queue);

        try {
            consumer.receiveNoWait();
            fail("An exception should have been thrown");
        } catch (JMSRuntimeException jmsre) {
            // Expected
        }

        try {
            context.close();
        } catch (Throwable ignored) {
        }
    }
}
 

@Test
public void testReceiveBytes() throws Exception {
   JMSProducer producer = context.createProducer();

   JMSConsumer consumer = context.createConsumer(queue1);

   BytesMessage bytesSend = context.createBytesMessage();
   bytesSend.writeByte((byte) 1);
   bytesSend.writeLong(2L);
   producer.send(queue1, bytesSend);

   BytesMessage msgReceived = (BytesMessage) consumer.receiveNoWait();

   byte[] bytesArray = msgReceived.getBody(byte[].class);

   assertEquals((byte) 1, msgReceived.readByte());
   assertEquals(2L, msgReceived.readLong());

   DataInputStream dataInputStream = new DataInputStream(new ByteArrayInputStream(bytesArray));

   assertEquals((byte) 1, dataInputStream.readByte());
   assertEquals(2L, dataInputStream.readLong());

}
 

@Test
public void testReceiveText() throws Exception {
   JMSProducer producer = context.createProducer();

   JMSConsumer consumer = context.createConsumer(queue1);

   String randomStr = newXID().toString();

   TextMessage sendMsg = context.createTextMessage(randomStr);
   producer.send(queue1, sendMsg);

   TextMessage receiveMsg = (TextMessage) consumer.receiveNoWait();

   assertEquals(randomStr, receiveMsg.getText());

}
 

@Test
public void testDeliveryMode() throws Exception {
   JMSProducer producer = context.createProducer();

   JMSConsumer consumer = context.createConsumer(queue1);

   producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);

   String strRandom = newXID().toString();

   producer.send(queue1, context.createTextMessage(strRandom));

   TextMessage msg = (TextMessage) consumer.receiveNoWait();

   assertNotNull(msg);

   assertEquals(DeliveryMode.NON_PERSISTENT, msg.getJMSDeliveryMode());

}