jar包下载地址（fasterxml.jackson）
06-01
jar下载
Home»com.fasterxml.jackson» core
jar包下载地址
https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations
https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core
https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind
【下载方式】
javadoc是文档（可选）
sources是源代码（可选）
jar可以通过外部引入加入工程的buildpath
