<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-amqp</artifactId>
        <version>2.5.0</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
    </dependency>
</dependencies>

@SpringBootTest
@RunWith(SpringRunner.class)
class RabbitmqProducerApplicationTests {
    @Autowired
    private RabbitTemplate rabbitTemplate;
    @Test
    void testProducer() {
        rabbitTemplate.setConfirmCallback(new RabbitTemplate.ConfirmCallback() {
            //三個參數(shù)分別為：相關(guān)配置消息、交換機是否收到消息、未收到消息的原因
            @Override
            public void confirm(CorrelationData correlationData, boolean b, String s) {
                if(b) System.out.println("交換機成功接受到了消息");
                else System.out.println("消息失敗原因" + s);
            }
        });
        // 設(shè)置交換機處理失敗消息的模式
        // true:消息到達(dá)不了隊列時 會將消息重新返回給生產(chǎn)者 false:消息到達(dá)不了隊列直接丟棄(默認(rèn))
        rabbitTemplate.setMandatory(true);
        rabbitTemplate.setReturnCallback(new RabbitTemplate.ReturnCallback() {
            //五個參數(shù)分別為：消息對象、失敗狀態(tài)碼、失敗信息、交換機名稱、路由鍵
            @Override
            public void returnedMessage(Message message, int i, String s, String s1, String s2) {
                System.out.println("隊列接受不到交換機的消息進(jìn)行了失敗回調(diào)");
            }
        });
        rabbitTemplate.convertAndSend(RabbitMQConfig.EXCHANGE_NAME,"test.heHe","HelloWorld");
    }
}

rabbitTemplate.convertAndSend(RabbitMQConfig.EXCHANGE_NAME + "1","test.heHe","HelloWorld");

rabbitTemplate.convertAndSend(RabbitMQConfig.EXCHANGE_NAME,"t.heHe","HelloWorld");