Groovy JSON/GPath查询

Question

给定以下JSON，我想提取postal_code ( long_name或short_name)。我已经使用JsonSlurper将其摄取到一个变量中，并尝试了使用find/contains/等进行各种查询，以获取“类型”中包含"postal_code“的节点，但仍无法找出它。任何帮助都是非常感谢的。

{
   "results" : [
      {
         "address_components" : [
            {
               "long_name" : "Jefferson Ave",
               "short_name" : "Jefferson Ave",
               "types" : [ "route" ]
            },
            {
               "long_name" : "North Newport News",
               "short_name" : "North Newport News",
               "types" : [ "neighborhood", "political" ]
            },
            {
               "long_name" : "Newport News",
               "short_name" : "Newport News",
               "types" : [ "locality", "political" ]
            },
            {
               "long_name" : "Virginia",
               "short_name" : "VA",
               "types" : [ "administrative_area_level_1", "political" ]
            },
            {
               "long_name" : "United States",
               "short_name" : "US",
               "types" : [ "country", "political" ]
            },
            {
               "long_name" : "23608",
               "short_name" : "23608",
               "types" : [ "postal_code" ]
            }
         ],
         "formatted_address" : "Jefferson Ave & Denbigh Blvd, Newport News, VA 23608, USA",
         "geometry" : {
            "location" : {
               "lat" : 37.13852930,
               "lng" : -76.52013079999999
            },
            "location_type" : "APPROXIMATE",
            "viewport" : {
               "northeast" : {
                  "lat" : 37.13987828029151,
                  "lng" : -76.51878181970848
               },
               "southwest" : {
                  "lat" : 37.13718031970851,
                  "lng" : -76.52147978029149
               }
            }
         },
         "types" : [ "intersection" ]
      }
   ],
   "status" : "OK"
}

Answer 1

下面的代码应该会找到postal_code类型的节点。如果results或address_components有多个列表项，您必须相应地进行调整，将索引访问替换为一些迭代，但希望这会有所帮助。

import groovy.json.*

def text = '''
{
   "results" : [
<omitted rest to save space>
....
}
'''

def json = new JsonSlurper().parseText(text)

def theNode = json.results[0]
                  .address_components
                  .find { it.types[0] == 'postal_code' }

assert '23608' == theNode.long_name