Android 在使用Gson进行解析后，将嵌套的JSON数组插入到SQLite中
在使用Android 在使用Gson进行解析后，将嵌套的JSON数组插入到SQLite中,android,json,sqlite,gson,Android,Json,Sqlite,Gson,在使用Gson解析嵌套的JSON数组之后，我现在需要将结果插入SQLite。我尝试在不使用Gson进行解析时按原样插入，但不起作用。我想办法做到这一点，但找不到解决办法 JSON解析： Gson gson = new Gson(); Type listType = new TypeToken<List<Country>>(){}.getType(); List<Country> countriesList = gson.fromJson(jsonString,
GsonSQLiteGson gson = new Gson();
Type listType = new TypeToken<List<Country>>(){}.getType();
List<Country> countriesList = gson.fromJson(jsonString, listType);
for(Country country : countriesList) {
ContentValues insertValues;
}
[
{
"name":"Afghanistan",
"topLevelDomain":[
".af"
],
"callingCodes":[
"93"
],
"capital":"Kabul",
"region":"Asia",
"subregion":"Southern Asia",
"population":27657145,
"latlng":[
33.0,
65.0
],
"demonym":"Afghan",
"area":652230.0,
"gini":27.8,
"timezones":[
"UTC+04:30"
],
"nativeName":"افغانستان",
"numericCode":"004",
"currencies":[
{
"name":"Afghan afghani",
"symbol":"؋"
}
],
"languages":[
{
"name":"Pashto",
"nativeName":"پښتو"
},
{
"name":"Uzbek",
"nativeName":"Oʻzbek"
},
{
"name":"Turkmen",
"nativeName":"Türkmen"
}
],
"translations":{
"de":"Afghanistan",
},
"flag":"https://restcountries.eu/data/afg.svg",
"cioc":"AFG"
},
public class Country implements Parcelable {
private String name;
private String capital;
private String region;
private String subregion;
private int population;
private List<Double> latlng = new ArrayList<Double>();
private double area;
private double gini;
private List<String> timezones = new ArrayList<String>();
private List<Currency> currencies = new ArrayList<Currency>();
private List<Language> languages = new ArrayList<Language>();
private String flag;
public Country() {}
//getters, setters, toString() and Parcelable methods
}
public class Currency implements Parcelable {
private String name;
private String symbol;
//getters, setters, toString() and Parcelable methods
}
public class Language implements Parcelable {
private String name;
private String nativeName;
//getters, setters, toString() and Parcelable methods
}
public class Country implements Parcelable {
private String name;
private String capital;
private String region;
private String subregion;
private int population;
private List<Double> latlng = new ArrayList<Double>();
private double area;
private double gini;
private List<String> timezones = new ArrayList<String>();
private List<Currency> currencies = new ArrayList<Currency>();
private List<Language> languages = new ArrayList<Language>();
private String flag;
public Country() {}
//getters, setters, toString() and Parcelable methods
}
public class Currency implements Parcelable {
private String name;
private String symbol;
//getters, setters, toString() and Parcelable methods
}
public class Language implements Parcelable {
private String name;
private String nativeName;
//getters, setters, toString() and Parcelable methods
}
如果没有更多的代码，很难知道问题在哪里。您正在执行两种不同的操作：
final RuntimeTypeAdapterFactory<City> typeFactory = RuntimeTypeAdapterFactory
of(City.class, "MyCity")
.registerSubtype(S...,...)
然后，如果它仍然不起作用，您将需要查看您的SQLite模式 首先获取国家的属性，然后将其放入内容值并插入
List<Country> countries = gson.fromJson(jsonString, new TypeToken<List<Country>>(){}.getType());
for(Country country : countries) {
String name = country.getName();
String capital = country.getCapital();
String region = country.getRegion();
String currencies = gson.toJson(country.getCurrencies());
...
ContentValues insertValues = new ContentValues();
insertValues.put("name", name)
insertValues.put("capital", capital);
insertValues.put("region", region);
insertValues.put("currencies", currencies);
...
long res = db.insert(TABLE_NAME, null, insertValues);
}
List countries=gson.fromJson（jsonString，new-TypeToken（）{}.getType（））；
（国家：国家）{
字符串名称=country.getName（）；
字符串capital=country.getCapital（）；
字符串region=country.getRegion（）；
字符串currences=gson.toJson（country.getcurrences（））；
...
ContentValues insertValues=新ContentValues（）；
insertValues.put（“name”，name）
insertValues.put（“大写”，大写）；
insertValues.put（“区域”，区域）；
插入值。看跌期权（“货币”，货币）；
...
long res=db.insert（表名称，null，insertValues）；
}