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json - JSON 指针中波浪号的用途

转载 作者:行者123 更新时间:2023-12-04 14:43:02 31 4
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JSON Pointer规范说明:

the characters '~' (%x7E) and '/' (%x2F) have special meanings in JSON Pointer



很清楚 '/' 的用途是什么,但我看不到波浪号有什么用途的迹象(只提到它需要转义以及如何转义)。

最佳答案

在 JSON 指针中,您需要使用 ~1编码你想要的 /作为路径中属性名称的一部分。正因为如此,~获得特殊含义作为转义序列的指示符,不再表示真正的波浪号。真正的波浪号表示为转义序列 ~0 .

换句话说(引用自 JSON Pointer 规范):

Evaluation of each reference token begins by decoding any escaped character sequence. This is performed by first transforming any occurrence of the sequence '~1' to '/', and then transforming any occurrence of the sequence '~0' to '~'. By performing the substitutions in this order, an implementation avoids the error of turning '~01' first into '~1' and then into '/', which would be incorrect (the string '~01' correctly becomes '~1' after transformation).



在此处查看 JSON 补丁测试可能会很有趣: https://github.com/json-patch/json-patch-tests/blob/master/spec_tests.json#L200 (搜索 ~)

关于json - JSON 指针中波浪号的用途,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31483170/

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