java.lang.NoClassDefFoundError: com/fasterxml/jackson/core/JsonFactory

这个错误 和 java.lang.NoClassDefFoundError: com/fasterxml/jackson/databind/ObjectMapper 解决方法一样

如果是spring4.3.X ，jackson用2.8.7以上的版本(不要用jackson-mapper-asl，已被jackson-core取代)

<dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-core</artifactId><version>2.8.9</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-annotations</artifactId><version>2.8.9</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.8.9</version></dependency>