json-io does not require that Java classes implement Serializable or Externalizable to be serialized, unlike ObjectInputStream / ObjectOutputStream. It will serialize any Java object graph into JSON ...
原文：http://web.archive.org/web/20230101150211/https://www.mkyong.com/java/how-to-enable-pretty-print-json-output-jackson/ 在 Jackson 中，我们可以使用 ...
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