在 Json/Gson 上阅读教程时,我注意到大多数人都倾向于以字符串的形式下载文件,然后通过 JSON 分析字符串。 然而,大多数 XML 教程都更喜欢直接与输入Stream 进行解析。
为什么两者有区别?什么是最佳做法/它甚至有区别?
XML 用户学到的教训是,记忆中的大型对象树可以占用许多记忆。
JSON 剖析树的内存并不比 XML 少,但通常比较简单。 与 GSON JsonObb 对象相比, XML DOM 相当有特色。 GSON (我不知道) 可能(类似于 XML 的 SAX ) 使用只装载所需内容的流解分析器(类似于 XML 的 SAX ) 。
但我想说的是,我们从那时起就学到了。JSON通常以字符串的形式被加载的原因包括:解剖员效率更高,在大多数情况下需要的功能比完整的DOM要少,硬件更强大,JSON文件通常更短,程序员更懒惰。
说到这里,当我意识到我不得不以复杂的方式与JSON数据组合作时,我找到了这个职位,这些数据组太大,无法有效地储存在一个字符串中。你不应该这样做,但是我很感激JsonParser.parse () 有个也可以使用输入Stream的功能。
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