小编Ank*_*pta的帖子

我有这个 inputJson：

[{"firstName": "Kancha", "lastName": "Cheena"},
{"firstName": "Harley", "lastName": "Quinn"}]

预期输出：

[{"fname":"Kancha", "value": "Kancha Cheena"},
{"fname":"Harley", "value": "Harley Quinn"}]

我正在使用这样的表达式：

[*].{fname: firstName, value: firstName lastName}

你能建议更正这个表达吗？

在其中一种环境中启动服务器时出现以下异常。但是，它在另一个环境中运行良好。

Caused by: org.springframework.amqp.AmqpIllegalStateException: Fatal exception on listener startup
        at org.springframework.amqp.rabbit.listener.SimpleMessageListenerContainer.doStart(SimpleMessageListenerContainer.java:342)
        at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.start(AbstractMessageListenerContainer.java:363)
        at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:173)
        ... 54 more
    Caused by: org.springframework.amqp.rabbit.listener.FatalListenerStartupException: Cannot prepare queue for listener. Either the queue doesn't exist or the broker will not allow us to use it.

    Caused by: java.io.IOException
            at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:106)
            at com.rabbitmq.client.impl.AMQChannel.wrap(AMQChannel.java:102)
            at com.rabbitmq.client.impl.AMQChannel.exnWrappingRpc(AMQChannel.java:124)
            at com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:790)
            at com.rabbitmq.client.impl.ChannelN.queueDeclarePassive(ChannelN.java:61)
            at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
            at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
            at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
            at java.lang.reflect.Method.invoke(Method.java:498)
            at org.springframework.amqp.rabbit.connection.CachingConnectionFactory$CachedChannelInvocationHandler.invoke(CachingConnectionFactory.java:348)
            at com.sun.proxy.$Proxy89.queueDeclarePassive(Unknown Source)
            at org.springframework.amqp.rabbit.listener.BlockingQueueConsumer.start(BlockingQueueConsumer.java:216)

        Caused by: com.rabbitmq.client.ShutdownSignalException: channel error; reason: {#method<channel.close>(reply-code=404, reply-text=NOT_FOUND - no …