希望解析一些Json并解析数组数组.不幸的是我无法弄清楚如何处理json中的嵌套数组.
JSON
{
"type": "Multipolygon","coordinates": [
[
[
[
-71.25,42.33
],[
-71.25,42.33
]
]
],[
[
[
-71.23,[
-71.23,42.33
]
]
]
]
}
当我只是一个阵列时,我实现了什么.
public class JsonObjectBreakDown {
public String type;
public List<List<String[]>> coordinates = new ArrayList<>();
public void setCoordinates(List<List<String[]>> coordinates) {
this.coordinates = coordinates;
}
}
解析呼叫
JsonObjectBreakDown p = gson.fromJson(withDup,JsonObjectBreakDown.class);
解决方法
你有一组数组的字符串数组数组.你需要
public List<List<List<String[]>>> coordinates = new ArrayList<>();
下列
public static void main(String args[]) {
Gson gson = new Gson();
String jsonstr ="{ \"type\": \"Multipolygon\",\"coordinates\": [ [ [ [ -71.25,42.33 ],[ -71.25,42.33 ] ] ],[ [ [ -71.23,[ -71.23,42.33 ] ] ] ]}";
JsonObjectBreakDown obj = gson.fromJson(jsonstr,JsonObjectBreakDown.class);
System.out.println(Arrays.toString(obj.coordinates.get(0).get(0).get(0)));
}
public static class JsonObjectBreakDown {
public String type;
public List<List<List<String[]>>> coordinates = new ArrayList<>();
public void setCoordinates(List<List<List<String[]>>> coordinates) {
this.coordinates = coordinates;
}
}
版画
[-71.25,42.33]