我的JSON是：
[
{
"distance":32,"stationCode":"MIG","name":"Midghat","platforms":"2"
},{
"distance":32,{
"distance":69,"stationCode":"MDDP","name":"Mandideep",{
"distance":18,"stationCode":"HBD","name":"Hoshangabad",{
"distance":37,"stationCode":"CHQ","name":"Choka",{
"distance":85,"stationCode":"HBJ","name":"Habibganj","platforms":"5"
},{
"distance":0,"stationCode":"ET","name":"ItarsiJn","platforms":"28"
},{
"distance":8,"stationCode":"PRKD","name":"Powerkheda",{
"distance":55,"stationCode":"ODG","name":"ObaidullaGanj",{
"distance":44,"stationCode":"BKA","name":"Barkhera",{
"distance":79,"stationCode":"MSO","name":"Misrod",{
"distance":25,"stationCode":"BNI","name":"Budni",{
"distance":91,"stationCode":"BPL","name":"BhopalJn","platforms":"6"
},{
"distance":63,"stationCode":"ITKL","name":"ItayaKalan","platforms":"2"
}
]
我希望它根据距离排序并删除重复的stationCode.我尝试使用简单的if else但是这个过程太多了……任何专门用于排序的快捷方式. 最佳答案
我不久前编写了这个实用程序,它对JSONArray的JSONArray进行了排序 唯一的条件是你的JSONobjects必须包含你想要排序的键(如果你想根据几个键排序,它也接受一组键)
import java.util.Collections;
import java.util.Comparator;
import java.util.Random;
import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
public class JSONArraySort {
@SuppressWarnings("unchecked")
public static void sortASCE(JSONArray array,Object key) {
Object[] keys = { key };
Collections.sort(array,new JSONArrayComparator(false,keys));
}
@SuppressWarnings("unchecked")
public static void sortDESC(JSONArray array,new JSONArrayComparator(true,keys));
}
@SuppressWarnings("unchecked")
public static void sortASCE(JSONArray array,Object[] key) {
Collections.sort(array,key));
}
@SuppressWarnings("unchecked")
public static void sortDESC(JSONArray array,key));
}
private static class JSONArrayComparator implements Comparator
现在,如果你想删除重复项,你可以迭代它们
Set
（编辑：李大同）
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