JSON

• rfc6901 - JavaScript Object Notation (JSON) Pointer
• automerge/automerge
  • A JSON-like data structure that can be modified concurrently by different users, and merged again automatically.
• Extension
  • geojson
  • hljson
  • json5
• Variants
  • yaml
  • toml
• jsonata-js/jsonata
  • JSON query and transformation language
  • https://jsonata.org/
• jsonnl - JSON with new line
  • https://jsonlines.org/
  • Standard MIME content-type #19
    • .jsonl, application/jsonl
  • jsonlines.org and ndjson.org wardi/jsonlines#22
• ndjson - Newline delimited JSON
  • ⚠️ 不活跃
  • ndjson/ndjson-spec
• wikipedia JSON streaming
  • line delimited JSON
  • concatenated JSON
  • length-prefixed JSON

Schema

• json-schema
• jsonschema2pojo
  • Json Schema 生成 Pojo
• app.quicktype.io

Patch

• rfc6902 - JSON Patch
  • application/json-patch+json
  • 基于操作 - op, path, value - 更适用于复杂场景
  • op = add, remove, replace, move, copy, test
  • test 用于断言，断言失败则操作失败
    • 例如 { "op": "test", "path": "/a/b/c", "value": "foo" }
• rfc7396 - JSON Merge Patch
  • application/merge-patch+json
  • 基于文档合并 - {"key":"new value"} - 适用于简单场景
  • 设置 key 为 null 表示删除
  • 数组只能替换
  • 合并操作不会出错
  • rfc7386
• jsonpatch
  • HN
• flipkart-incubator/zjsonpatch
• https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/api-conventions.md#patch-operations
  • application/strategic-merge-patch+json
    • 基于 Merge Patch
    • list 合并基于 name 去重合并，而不是直接替换
      • patchStrategy
    • $patch
      • replace, delete
    • Strategic Merge Patch

Diff

• DoneDeal0/superdiff
• [benjamine/jsondiffpatch](- https://github.com/benjamine/jsondiffpatch)
  • npm:jsondiffpatch
  • https://github.com/benjamine/jsondiffpatch/blob/master/docs/formatters.md
  • https://benjamine.github.io/jsondiffpatch
• andreyvit/json-diff
  • MIT, CoffeeScript
  • npm:json-diff
• google/diff-match-patch
  • plain text
• trailofbits/graphtage
  • LGPLv3, Python
  • JSON, JSON5, XML, HTML, YAML, CSV
• sanity-io/mendoza
  • MIT, Go
  • Mendoza: Use stack machines to compute efficient JSON diffs
    • HN
• https://extendsclass.com/json-diff.html
• zgrossbart/jdd
  • http://www.jsondiff.com/
• https://json-diff.com/
• mattphillips/deep-object-diff
• flitbit/diff
• Starcounter-Jack/JSON-Patch
• kpdecker/jsdiff
  • Text Diff

Command line tools

• antonmedv/fx
• jmespath/jp

ETL

• jsonata-js/jsonata
  • JSONata query and transformation language
• bazaarvoice/jolt
  • Apache-2.0, Java
  • JOLT - JsOn Language for Transform
• jmespath
  • jmespath/go-jmespath

Misc

• WebReflection/JSONH
  • Reducce JSON Size
  • hpack

FAQ

JSON Patch and JSON Merge Patch

• rfc6902 vs rfc7396
• 参考
  • JSON Patch and JSON Merge Patch

时间格式选择

• ISO 8601
• new Date().toJSON()
  • 2018-04-16T05:24:53.603Z
• Java new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.CHINA)
• The “right” JSON date format

new Date().toJSON() === new Date().toISOString();