java怎么去除JSON数组的重复值?

Question

java怎么去除JSON数组的重复值

Answer 1

代码如下：
/**
* 去重复index_id项合并value值
* @param args
*/
public static JSONArray delRepeatIndexid(JSONArray array) {

JSONArray arrayTemp = new JSONArray();

int num = 0;
for(int i = 0;i < array.size();i++){
if(num==0){
arrayTemp.add(array.get(i));
}else{
int numJ = 0;
for(int j = 0;j < arrayTemp.size(); j++){
JSONObject newJsonObjectI = (JSONObject)array.get(i);
JSONObject newJsonObjectJ = (JSONObject)arrayTemp.get(j);
String index_idI = newJsonObjectI.get("index_id").toString();
String valueI = newJsonObjectI.get("value").toString();
String timeI = newJsonObjectI.get("time").toString();
String itemidI = newJsonObjectI.get("itemid").toString();

String index_idJ = newJsonObjectJ.get("index_id").toString();
String valueJ = newJsonObjectJ.get("value").toString();

if(index_idI.equals(index_idJ)){
int newValue = Integer.parseInt(valueI) + Integer.parseInt(valueJ);
arrayTemp.remove(j);
JSONObject newObject = new JSONObject();
newObject.put("index_id", index_idI);
newObject.put("itemid", itemidI);
newObject.put("time", timeI);
newObject.put("value", newValue);
arrayTemp.add(newObject);
break;
}
numJ++;
}
if(numJ-1 == arrayTemp.size()-1){
arrayTemp.add(array.get(i));
}
}

num++;
}
return arrayTemp;
}