对jsonArray数组存储的对象做自定义按多个值排序

发布时间：2020-12-16 18:57:38 所属栏目：百科来源：网络整理

导读：public void batchRepayment() throws IOException{ String jsonString = "[{ "orderId": "431","installment": "9" },{ "orderId": "135",{ "orderId": "432","installment": "8" },"installment": "2" },"installment": "5" }

public void batchRepayment() throws IOException{

String jsonString = "[{ "orderId": "431","installment": "9" },{ "orderId": "135",{ "orderId": "432","installment": "8" },"installment": "2" },"installment": "5" },{ "orderId": "431","installment": "3" }]";

JSONArray jsonArray = JSONArray.fromObject(jsonString);
if(jsonArray != null){
List<JSONObject> jsonList = new ArrayList<JSONObject>();
for (int i = 0; i < jsonArray.size(); i++) {
jsonList.add(jsonArray.getJSONObject(i));
}
//重写排序方法，按照order by orderId,installment方式排序，确保同个订单orderId优先还期数installment靠前的
Collections.sort( jsonList,new Comparator<JSONObject>() {
private static final String KEY_NAME = "orderId";
private static final String KEY_NAME2 = "installment";

@Override
public int compare(JSONObject a,JSONObject b) {
String valA_1 = new String();
String valB_1 = new String();
String valA_2 = new String();
String valB_2 = new String();

try {
valA_1 = a.getString(KEY_NAME);
valB_1 = b.getString(KEY_NAME);
valA_2 = a.getString(KEY_NAME2);
valB_2 = b.getString(KEY_NAME2);
}catch (JSONException e) {
//do something
}
int flag = valA_1.compareTo(valB_1);
if(flag == 0){
return valA_2.compareTo(valB_2);
}else{
return flag;
}
}

});

}

（编辑：李大同）

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