本章主要介紹用java實作扁平化輸出json所有節點key/value(包含所有内層子節點)
1.json結構
目的輸出bill_list下的datalist裡的子節點key/value
2.實作代碼
public static Map jsonConvertMap(JSONObject json){
Map map = new HashMap<>();
if(json != null && json.size() > 0){
for(String k : json.keySet()){
Object v = json.get(k);
if(v instanceof JSONArray){
List> list = new ArrayList>();
Iterator it = ((JSONArray)v).iterator();
while(it.hasNext()){
JSONObject json2 = (JSONObject) it.next();
list.add(jsonConvertMap(json2));
}
map.put(k, list);
} else if(v instanceof JSONObject){
List> list = new ArrayList>();
JSONObject child = (JSONObject) v;
for(String stk: child.keySet()){
Object value = child.get(stk);
if(value instanceof JSONArray){
Iterator it = ((JSONArray)value).iterator();
while(it.hasNext()){
JSONObject json2 = (JSONObject) it.next();
list.add(jsonConvertMap(json2));
}
}else{
map.put(stk, value.toString());
}
}
if(list.size() > 0){
for(int m = 0;m
Map chMap = list.get(m);
for(String chKey : chMap.keySet()){
map.put(chKey, chMap.get(chKey).toString());
}
}
}
}else{
map.put(k, v);
}
}
}
return map;
}