我在Android应用程序中使用this link。我必须从地址 - 组件JSON数组中检索长名称密钥的值。
以下是JSON结构：
{
"results":[
{
"address_components":[
{
"long_name":"285",
"short_name":"285",
"types":[
"street_number"
]
},
{
"long_name":"Bedford Avenue",
"short_name":"Bedford Ave",
"types":[
"route"
]
},
{
"long_name":"Williamsburg",
"short_name":"Williamsburg",
"types":[
"neighborhood",
"political"
]
},
{
"long_name":"Brooklyn",
"short_name":"Brooklyn",
"types":[
"sublocality",
"political"
]
},
{
"long_name":"New York",
"short_name":"New York",
"types":[
"locality",
"political"
]
},
{
"long_name":"Kings",
"short_name":"Kings",
"types":[
"administrative_area_level_2",
"political"
]
},
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
},
{
"long_name":"11211",
"short_name":"11211",
"types":[
"postal_code"
]
}
],
"formatted_address":"285 Bedford Avenue, Brooklyn, NY 11211, USA",
"geometry":{
"location":{
"lat":40.71412890,
"lng":-73.96140740
},
"location_type":"ROOFTOP",
"viewport":{
"northeast":{
"lat":40.71547788029149,
"lng":-73.96005841970849
},
"southwest":{
"lat":40.71277991970850,
"lng":-73.96275638029151
}
}
},
"types":[
"street_address"
]
},
{
"address_components":[
{
"long_name":"Grand St - Bedford Av",
"short_name":"Grand St - Bedford Av",
"types":[
"bus_station",
"transit_station",
"establishment"
]
},
{
"long_name":"Williamsburg",
"short_name":"Williamsburg",
"types":[
"neighborhood",
"political"
]
},
{
"long_name":"Brooklyn",
"short_name":"Brooklyn",
"types":[
"sublocality",
"political"
]
},
{
"long_name":"Kings",
"short_name":"Kings",
"types":[
"administrative_area_level_2",
"political"
]
},
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
},
{
"long_name":"11211",
"short_name":"11211",
"types":[
"postal_code"
]
}
],
"formatted_address":"Grand St - Bedford Av, Brooklyn, NY 11211, USA",
"geometry":{
"location":{
"lat":40.7143210,
"lng":-73.9611510
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":40.71566998029149,
"lng":-73.95980201970849
},
"southwest":{
"lat":40.71297201970850,
"lng":-73.96249998029151
}
}
},
"types":[
"bus_station",
"transit_station",
"establishment"
]
},
{
"address_components":[
{
"long_name":"Grand St - Bedford Av",
"short_name":"Grand St - Bedford Av",
"types":[
"bus_station",
"transit_station",
"establishment"
]
},
{
"long_name":"Williamsburg",
"short_name":"Williamsburg",
"types":[
"neighborhood",
"political"
]
},
{
"long_name":"Brooklyn",
"short_name":"Brooklyn",
"types":[
"sublocality",
"political"
]
},
{
"long_name":"Kings",
"short_name":"Kings",
"types":[
"administrative_area_level_2",
"political"
]
},
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
},
{
"long_name":"11211",
"short_name":"11211",
"types":[
"postal_code"
]
}
],
"formatted_address":"Grand St - Bedford Av, Brooklyn, NY 11211, USA",
"geometry":{
"location":{
"lat":40.7146840,
"lng":-73.9615630
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":40.71603298029149,
"lng":-73.96021401970850
},
"southwest":{
"lat":40.71333501970850,
"lng":-73.96291198029151
}
}
},
"types":[
"bus_station",
"transit_station",
"establishment"
]
},
{
"address_components":[
{
"long_name":"Bedford Av - Grand St",
"short_name":"Bedford Av - Grand St",
"types":[
"bus_station",
"transit_station",
"establishment"
]
},
{
"long_name":"Williamsburg",
"short_name":"Williamsburg",
"types":[
"neighborhood",
"political"
]
},
{
"long_name":"Brooklyn",
"short_name":"Brooklyn",
"types":[
"sublocality",
"political"
]
},
{
"long_name":"Kings",
"short_name":"Kings",
"types":[
"administrative_area_level_2",
"political"
]
},
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
},
{
"long_name":"11211",
"short_name":"11211",
"types":[
"postal_code"
]
}
],
"formatted_address":"Bedford Av - Grand St, Brooklyn, NY 11211, USA",
"geometry":{
"location":{
"lat":40.714710,
"lng":-73.9609990
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":40.71605898029150,
"lng":-73.95965001970849
},
"southwest":{
"lat":40.71336101970850,
"lng":-73.96234798029150
}
}
},
"types":[
"bus_station",
"transit_station",
"establishment"
]
},
{
"address_components":[
{
"long_name":"Williamsburg",
"short_name":"Williamsburg",
"types":[
"neighborhood",
"political"
]
},
{
"long_name":"Brooklyn",
"short_name":"Brooklyn",
"types":[
"sublocality",
"political"
]
},
{
"long_name":"New York",
"short_name":"New York",
"types":[
"locality",
"political"
]
},
{
"long_name":"Kings",
"short_name":"Kings",
"types":[
"administrative_area_level_2",
"political"
]
},
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
}
],
"formatted_address":"Williamsburg, Brooklyn, NY, USA",
"geometry":{
"bounds":{
"northeast":{
"lat":40.72517730,
"lng":-73.9364980
},
"southwest":{
"lat":40.69793290,
"lng":-73.96984499999999
}
},
"location":{
"lat":40.70644610,
"lng":-73.95361629999999
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":40.72517730,
"lng":-73.9364980
},
"southwest":{
"lat":40.69793290,
"lng":-73.96984499999999
}
}
},
"types":[
"neighborhood",
"political"
]
},
{
"address_components":[
{
"long_name":"11211",
"short_name":"11211",
"types":[
"postal_code"
]
},
{
"long_name":"Brooklyn",
"short_name":"Brooklyn",
"types":[
"sublocality",
"political"
]
},
{
"long_name":"New York",
"short_name":"New York",
"types":[
"locality",
"political"
]
},
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
}
],
"formatted_address":"Brooklyn, NY 11211, USA",
"geometry":{
"bounds":{
"northeast":{
"lat":40.72800890,
"lng":-73.92072990
},
"southwest":{
"lat":40.69763590,
"lng":-73.97616690
}
},
"location":{
"lat":40.71800360,
"lng":-73.96537150000002
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":40.72800890,
"lng":-73.92072990
},
"southwest":{
"lat":40.69763590,
"lng":-73.97616690
}
}
},
"types":[
"postal_code"
]
},
{
"address_components":[
{
"long_name":"Kings",
"short_name":"Kings",
"types":[
"administrative_area_level_2",
"political"
]
},
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
}
],
"formatted_address":"Kings, NY, USA",
"geometry":{
"bounds":{
"northeast":{
"lat":40.7394460,
"lng":-73.83336509999999
},
"southwest":{
"lat":40.56956370,
"lng":-74.04397190
}
},
"location":{
"lat":40.65287620,
"lng":-73.95949399999999
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":40.7394460,
"lng":-73.83336509999999
},
"southwest":{
"lat":40.56956370,
"lng":-74.04397190
}
}
},
"types":[
"administrative_area_level_2",
"political"
]
},
{
"address_components":[
{
"long_name":"Brooklyn",
"short_name":"Brooklyn",
"types":[
"sublocality",
"political"
]
},
{
"long_name":"New York",
"short_name":"New York",
"types":[
"locality",
"political"
]
},
{
"long_name":"Kings",
"short_name":"Kings",
"types":[
"administrative_area_level_2",
"political"
]
},
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
}
],
"formatted_address":"Brooklyn, NY, USA",
"geometry":{
"bounds":{
"northeast":{
"lat":40.7394460,
"lng":-73.83336509999999
},
"southwest":{
"lat":40.5510420,
"lng":-74.056630
}
},
"location":{
"lat":40.650,
"lng":-73.950
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":40.7394460,
"lng":-73.83336509999999
},
"southwest":{
"lat":40.5510420,
"lng":-74.056630
}
}
},
"types":[
"sublocality",
"political"
]
},
{
"address_components":[
{
"long_name":"New York",
"short_name":"New York",
"types":[
"locality",
"political"
]
},
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
}
],
"formatted_address":"New York, NY, USA",
"geometry":{
"bounds":{
"northeast":{
"lat":40.91524140,
"lng":-73.70027209999999
},
"southwest":{
"lat":40.4959080,
"lng":-74.25908790
}
},
"location":{
"lat":40.71435280,
"lng":-74.00597309999999
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":40.91524140,
"lng":-73.70027209999999
},
"southwest":{
"lat":40.4959080,
"lng":-74.25573489999999
}
}
},
"types":[
"locality",
"political"
]
},
{
"address_components":[
{
"long_name":"New York",
"short_name":"NY",
"types":[
"administrative_area_level_1",
"political"
]
},
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
}
],
"formatted_address":"New York, USA",
"geometry":{
"bounds":{
"northeast":{
"lat":45.0158650,
"lng":-71.85626990
},
"southwest":{
"lat":40.4959080,
"lng":-79.76214379999999
}
},
"location":{
"lat":43.29942850,
"lng":-74.21793260000001
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":45.01261130,
"lng":-71.85626990
},
"southwest":{
"lat":40.4959080,
"lng":-79.76214379999999
}
}
},
"types":[
"administrative_area_level_1",
"political"
]
},
{
"address_components":[
{
"long_name":"United States",
"short_name":"US",
"types":[
"country",
"political"
]
}
],
"formatted_address":"United States",
"geometry":{
"bounds":{
"northeast":{
"lat":71.3898880,
"lng":-66.94976079999999
},
"southwest":{
"lat":18.91106420,
"lng":172.45469660
}
},
"location":{
"lat":37.090240,
"lng":-95.7128910
},
"location_type":"APPROXIMATE",
"viewport":{
"northeast":{
"lat":49.380,
"lng":-66.940
},
"southwest":{
"lat":25.820,
"lng":-124.390
}
}
},
"types":[
"country",
"political"
]
}
],
"status":"OK"
}
我的Java源代码：
我要去印度，但我必须在输出中打印 Vasant Vihar 。
任何人都可以帮我一些代码来实现这个目标吗？
任何帮助都将不胜感激。
答案 0 :(得分：4)
我宁愿建议使用GSON来解析bean。您可以选择感兴趣的字段。
以下是我建议你使用的豆子：
响应类：
public class Response {
private Result [] results;
// getters and setters(optional)
}
结果类：
public class Result{
private AddressComponent[] addressComponents;
// getters and setters(optional)
}
地址组件类：
public class AddressComponent {
private String longName;
private String shortName;
private String [] types;
// getters and setters (optional)
}
以下是你解析的方式：
String str = "<the ugly json you pasted>";
Gson gson = new GsonBuilder()
.setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES )
.create();
GSON默认忽略所有没有相应Java字段的json属性。
响应响应= gson.fromJson（str，Response .class）;
您可以访问感兴趣的领域：
AddressComponent [] AddressComponents = response.getResults()[1].getAddressComponent();
从现在开始，您可以根据需要使用该对象。
答案 1 :(得分：2)
从当前json String获取long_name：
JSONObject json=new JSONObject("YOUR_JSON_STRING");
JSONArray ja = json.getJSONArray("results");
for (int i = 0; i < ja.length(); i++) {
JSONObject jo = ja.getJSONObject(i);
JSONArray jaa = jo.getJSONArray("address_components");
for (int j = 0; j < jaa.length(); j++) {
JSONObject jotwo = jaa.getJSONObject(j);
//long_name
String str_long_name=jotwo.getString("long_name");
}
}