JSONArray或List或List根据里面的某个键对应的值排序
例如 原数组 a1,a2,a10 ,b1,b3,b20,3,5,10
要求排成 3,5,10,a1,a2,a10,b1,b3,b20
public static List<JSONObject> sortList(List<JSONObject> list){
if (list == null || list.size() < 2) {
return list;
}
list.sort(new ChineseComparator());
return list;
}
package com.sgcc.civil.util;
import com.alibaba.fastjson.JSONObject;
import java.io.Serializable;
import java.text.Collator;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.Locale;
public class ChineseComparator implements Comparator<JSONObject>, Serializable{
private static final long serialVersionUID = 1L;
// 数字类型
private static final Integer TYPE_NUMBER = 0;
// 字符类型(非数字)
private static final Integer TYPE_CHARACTER = 1;
/**
* 构造
*/
public ChineseComparator() {
}
@Override
public int compare(JSONObject b1, JSONObject b2) {
String o1 = b1.getString("pointName");
String o2 = b2.getString("pointName");
// 把字符串拆分成字符数组
String[] o1Chars = o1.split("");
String[] o2Chars = o2.split("");
// 根据字符数组生成带分类的字符列表
// List<Object>的第一位为该字符的类型(TYPE_NUMBER, TYPE_CHARACTER)
// List<Object>的第二位为该字符的内容(一位数字, 一位非数字, 多位数字)
List<List<Object>> o1CharList = getCharList(o1Chars);
List<List<Object>> o2CharList = getCharList(o2Chars);
// 统一CharList的长度
int max = Math.max(o1CharList.size(), o2CharList.size());
while (o1CharList.size() < max) {
o1CharList.add(new ArrayList<>());
}
while (o2CharList.size() < max) {
o2CharList.add(new ArrayList<>());
}
// 开始比较
int compare = 0;
for (int i = 0; i < max; i++) {
List<Object> o1list = o1CharList.get(i);
List<Object> o2list = o2CharList.get(i);
// CharList短的,排在前面
if (o1list.size() == 0) {
compare = -1;
break;
}
if (o2list.size() == 0) {
compare = 1;
break;
}
// 先比较类型
Integer o1Type = (Integer) o1list.get(0);
Integer o2Type = (Integer) o2list.get(0);
int typeCompare = Integer.compare(o1Type, o2Type);
if (typeCompare != 0) {
// 类型不同,则数字在前,非数字在后
compare = typeCompare;
break;
} else {
// 类型相同,则比较内容
if (TYPE_NUMBER.equals(o1Type)) {
// 比较数字
int o1Content = Integer.parseInt(o1list.get(1).toString());
int o2Content = Integer.parseInt(o2list.get(1).toString());
compare = Integer.compare(o1Content, o2Content);
} else if (TYPE_CHARACTER.equals(o1Type)) {
// 比较非数字
String o1Content = (String) o1list.get(1);
String o2Content = (String) o2list.get(1);
compare = Collator.getInstance(Locale.CHINESE).compare(o1Content, o2Content);
}
// 如果不相等,则退出比较
if (compare != 0) {
break;
}
}
}
return compare;
}
/**
* 根据字符数组生成带分类的字符列表
*
* @param chars 字符数组
* @return 带分类的字符列表,List<Object>的第一位为该字符的类型(TYPE_NUMBER, TYPE_CHARACTER),第二位为该字符的内容
*/
private List<List<Object>> getCharList(String[] chars) {
List<List<Object>> charList = new ArrayList<>();
List<Object> list;
for (int i = 0; i < chars.length; i++) {
char c = (chars[i].toCharArray())[0];
list = new ArrayList<>();
// 是否为数字
if (((int) c >= '0' && (int) c <= '9')) {
StringBuilder str = new StringBuilder();
// 下一位是否为数字,如果为数字则组成多位数
do {
str.append(c);
if (i + 1 < chars.length) {
c = (chars[++i].toCharArray())[0];
} else {
break;
}
} while ((int) c >= '0' && (int) c <= '9');
if (!(i + 1 == chars.length) || !(((int) c >= '0' && (int) c <= '9'))) {
i--;
}
list.add(TYPE_NUMBER);
list.add(str.toString());
} else {
list.add(TYPE_CHARACTER);
list.add(String.valueOf(c));
}
charList.add(list);
}
return charList;
}
}