对Map 的整数值列表进行排序

I have a List<Map <String, String>> which contains data such as IP address, rx packets, rx bytes. eg

我有一个List >,其中包含IP地址,rx包,rx字节等数据。例如

{key:address value:10.0.0.1, key:packets value:500, key:bytes value:20240}
{key:address value:10.0.0.5, key:packets value:20,  key:bytes value:260}
{key:address value:10.0.0.100, key:packets value:1000,  key:bytes value:503210}

How can i sort this List based on bytes? I want one output like this:

如何根据字节对此列表进行排序?我想要一个像这样的输出:

{10.0.0.100, 1000,  503210}
{10.0.0.1, 500, 20240}
{10.0.0.5, 20,  260}

edit: I get my data from API(mikrotik API) which returns List<Map <String, String>>

编辑:我从API(mikrotik API)获取数据,返回List >

List<java.util.Map<String, String>> results = con.execute("mikrotik command");

2 个解决方案

#1

To sort based on a value of a key in a Map you can do

要根据Map中键的值进行排序,您可以执行此操作

List<Map<String, String>> listOfData =

listOfData.sort(Comparator.comparing(m -> m.get("bytes"));

In general, you should use a custom class in Java, rather than a generic collection like Map wherever you have lots of them with the same String keys

一般情况下,您应该使用Java中的自定义类,而不是像Map这样的泛型集合,只要有很多它们使用相同的String键

#2

-1

instead of using a map create a Custom class for the data with setters and getters.Implement comparator interface

而不是使用地图创建一个自定义类的数据与setter和getters.Implement比较器接口

class MyObject implements Comparator<MyObject>{
    String ip;
    int rxPackets;
    int rxbytes;
//getters and setters for each element

@Override
    public int compare(MyObject o1, MyObject o2) {
        return o1.getrxbytes.compareTo(o2.getrxbytes());
    }

Then use Collections.sort(pass List<MyObject> here);

然后使用Collections.sort(在这里传递List );

#1