java - java中如何对得到的不同数据项对应的计数进行排序

Question

我需要一个从多个文件读取并根据用户输入的日期范围显示报告的程序。文件中的数据如下所示:

[C445] ComputerName:FRONTOFFICE UserID:YB Yenae Ball Station 7A  LanId: | (11/23 17:01:55) | Client is disconnected from agent.
[C445] ComputerName:FRONTOFFICE UserID:YB Yenae Ball Station 7C  LanId: | (11/23 17:02:00) | Client is connected to agent.
[C7AE] ComputerName:KCUTSHALL-PC UserID:GO kcutshall Station 9901  LanId: | (11/23 13:33:06 - 11/23 13:33:41)|Client is disconnected from agent.

我需要如下输出:

Computer Name   No.of disconnects
A                   4
B                   2
C                   1

即特定计算机名称的断开连接数，按与输入的日期范围相对应的降序排列。 我尝试这样做，但我无法获得计算机的综合计数，也无法进行排序。我得到的输出是:

计算机名称断开连接次数

A               1
A               1
A               2
B               1
B               2
C               1
C               1

请帮我解决这个问题。这是我写的代码

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import java.util.Scanner;
import java.util.*;
import java.text.*;
import java.util.regex.Pattern;
import java.util.regex.Matcher;


public class ReadZip{
    public static void main(String args[]) throws ParseException {
        try {
            Scanner input1=new Scanner(System.in);

            Scanner input2=new Scanner(System.in);
            System.out.println("Enter start date");
            String userDate1=input1.nextLine();
            System.out.println("Enter end date");
            String userDate2=input2.nextLine();
            DateFormat df = new SimpleDateFormat ("MM/dd");
            Date d1=df.parse(userDate1);
            Date d2=df.parse(userDate2);

            ZipFile zf=new ZipFile("C:\\Users\\Engineeir\\Desktop\\QoS_logs.zip");
            Enumeration entries=zf.entries();

            BufferedReader input=new BufferedReader(new InputStreamReader(
            System.in));
            while (entries.hasMoreElements()) {
                ZipEntry ze=(ZipEntry) entries.nextElement();

                BufferedReader br=new BufferedReader(new InputStreamReader(zf.getInputStream(ze)));
                String line; String name;String compnames;int lines=0;
                while ((line=br.readLine())!=null) {

                    String[] st=line.split("\\|",-1);

                    if(st.length>1){
                        String dates=st[1];
                        String[] parts=dates.split("-");
                        SimpleDateFormat f=new SimpleDateFormat("(MM/dd");
                        String[] ob=parts[0].split(" ");
                        String finaldate=ob[1];

                        Date d3=f.parse(finaldate);

                        if(d3.after(d1) && d3.before(d2)){
                            compnames=getName(st);
                            if(line.contains("Client is disconnected from agent")==true)
                            {
                                //compnames=getName(st);
                                lines++;
                            }
                        System.out.println(compnames+"\t"+lines);}
                        else{break;}
                        //System.out.println(compnames+"\t"+lines);

                    }
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public static String getName(String[] st)
    {
        String[] name=st[0].split("\\:",-1);
        String[] comp=name[1].split("\\ ",-1);

        return(comp[0]);
    }
}

Answer 1

不要边打印边打印，而是尝试在 map 中累积数据(键:计算机名称，值:断开连接的次数)。然后对 map 键进行排序并打印最终总计。