Question

如何从以下响应中提取值：

 {"photosets":{"cancreate":1, "page":1, "pages":1, "perpage":1, "total":1, "photoset":
[{"id":"72157629171255321", "primary":"6817523143", "secret":"250f42ed7c", "server":"7166", 
"farm":8, "photos":"1", "videos":0, "title":{"_content":"Set1"}, "description":{"_content":""}, 
"needs_interstitial":0, "visibility_can_see_set":1, "count_views":"0", "count_comments":"0", 
"can_comment":1, "date_create":"1328373127", "date_update":"1328373159"}]}, "stat":"ok"}

我需要一些不是所有的值，例如我需要“id”字段我该如何获得它？

谢谢，

Answer 1

有一个非常高效的包装器（因为杰克逊......）用于scala。杰克森会帮助你做这件事check this out。

val ids: Seq[JString] = parse[JValue]("""
  {"photosets":{"cancreate":1, "page":1, "pages":1, "perpage":1, "total":1, "photoset":
  [{"id":"72157629171255321", "primary":"6817523143", "secret":"250f42ed7c", "server":"7166", "farm":8, "photos":"1", "videos":0, "title":{"_content":"Set1"}, "description": {"_content":""}, "needs_interstitial":0, "visibility_can_see_set":1, "count_views":"0", "count_comments":"0", "can_comment":1, "date_create":"1328373127", "date_update":"1328373159"}]}, "stat":"ok"}
""") \\ "id"

以下是HowTo，请注意使用parse将返回JValue，您可以在其上调用在第一级找到的\或\\或之后给予任何财产的任何财产。

使用反射，Jerkson也可以在案例类中直接解析，查看文档......它非常强大

Answer 2

Scala没有任何固有的内容，只需使用Jackson之类的JSON解析器并提取所需的信息。

从Scala中的JSON响应中提取值

2 个答案: