ssh框架出现错误：Error creating bean with name 'deviceMessService' defined in class path resource ...

错误：Error creating bean with name 'deviceMessService' defined in class path resource [applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'deviceMessDao' of bean class [mqtt.demo.serviceimpl.deviceMessServiceimpl]: Bean property 'deviceMessDao' is not writable or has an invalid setter method. Does the parameter type of the setter match the return type of the getter?

解决：

在spring配置文件中如果是这样配置的，那么在serviceImpl类中必须有类似如下（set方法必须有）