org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'messageConverter' defined in class path resource [com/cyberbim/modbusdriver/config/MyAMQPconfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.amqp.support.converter.MessageConverter]: Factory method 'messageConverter' threw exception; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/ObjectMapper
這個錯誤就是缺少了依賴
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.11.3</version>
</dependency>
加上這個就好了！
注意加上依賴版本可能和httpclient需求的版本有沖突調整和httpclient版本一致即可。
google第一次就搜出來了，結果不相信。一下午轉回來還是這個問題。。。