我希望有一个库可以对Java POJO进行序列化，其方式与谷歌出色的Gson库类似。
然而，我需要序列化的格式非常紧凑（它们需要适合单独的UDP数据包），因此我担心序列化为JSON会很浪费，并且更喜欢二进制格式。
有这样的事情吗？
几天前，我发现BSON，它声称是JSON的简单二进制表示。我没有尝试过，但从它的常见问题解答来看，它并不总是比JSON更紧凑（小数字使用更多空间），但更容易（更快）解析和生成。如果你有已知的数据类型要传输，其他协议可能比它更高效（至少在空间方面）。
使用Hessian。如果您想节省更多空间，请用GZip输出/输入流
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