摘要：you can define it with Integer rather than int or long. define it with a package type. jackson wont' parse it to default value 阅读全文

摘要：参考文献： http://blog.csdn.net/huangwuyi/article/details/5412500 1.JAR包简介 要使程序可以运行必须引入JSON-lib包，JSON-lib包同时依赖于以下的JAR包： commons-lang.jar commons-beanutils.jar commons-collections.jar com... 阅读全文