Java作业聊天记录的提取

题目：根据附件中的QQ群聊天文件，读取其中的聊天记录，实现如下的方法：1）List<Message> getMessagesById(String id, Date beginTime, Date endTime)：根据参数的id返回id对应的qq号码或者邮箱地址标识的聊天者在指定时间段内(beginTime与Date endTime之间)的所有聊天记录；2）getChatter()：打印除了教师外的话唠（发言最多的）同学的QQ号（或邮箱）、名字（QQ群中的名字）。

LittleProject.java代码如下：

package homework5;
import java.util.*;
import java.util.Map.Entry;
import java.io.*;
public class LittleProject {
    List<Message> list = new ArrayList<>();
    //Set<Person> personSet = new HashSet<>();
    Map<Person,Integer> personMap = new HashMap<>();
    public void execute(){
        File file = new File("山科大Java学习交流群.txt");
        try {
            InputStream is = new FileInputStream(file);
            BufferedReader br;
            try {
                br = new BufferedReader(new InputStreamReader(is,"UTF-8"));
                try {
                    String str0 = br.readLine();
                    String content = "";
                    String last = str0;
                    while(true) {
                        String str1 = br.readLine();
                        if(!(str1==null)&&!str1.startsWith("2018")) {//"!(str1==null)&&!str1.startsWith("2018")"顺序不能错，害我debug好久
                            content+=str1;
                            content+="\r\n";
                        }
                        else if(str1==null){
                            list.add(dealingMessage(last,content));
                            break;
                        }
                        else {
                            list.add(dealingMessage(last,content));
                            content = "";
                            last = str1;
                        }
                    }
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            } catch (UnsupportedEncodingException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            System.out.println("无该文件！");
            e.printStackTrace();
        }
        
    }
    public Message dealingMessage(String str,String content) {
        String[]ss = str.split(" ");
        String[]dateString = ss[0].split("-");
        String[]timeString = ss[1].split(":");
        Date date = null;
        String name = null;
        String mail = null;
        Date date1 = new Date();
        Calendar calendar = Calendar.getInstance();
        int year = Integer.parseInt(dateString[0]);
        int month = Integer.parseInt(dateString[1]) - 1;
        int day = Integer.parseInt(dateString[2]);
        int hour = Integer.parseInt(timeString[0]);
        int minute = Integer.parseInt(timeString[1]);
        int second = Integer.parseInt(timeString[2]);
        calendar.set(year,month,day,hour,minute,second);
        date1 = calendar.getTime();
        date = date1;
        String left;
        if(calendar.get(Calendar.HOUR_OF_DAY)<10&&calendar.get(Calendar.HOUR_OF_DAY)>=0) {
            left = str.substring(4+2*2+2+1 + 2*3+2+1-1, str.length());
        }
        else{
            left = str.substring(4+2*2+2+1 + 2*3+2+1, str.length());
        }
        StringBuilder sb = new StringBuilder(left);
        sb.reverse();
        String sReverse = new String(sb);
        if(left.endsWith(")")) {
            int index = sReverse.indexOf('(');
            int mailLength = index+1-2;//不包含括号
            String mail1 = left.substring(left.length()-1-mailLength,left.length()-1);
            String name1 = left.substring(0,left.length()-1-mailLength-1);
            mail = mail1;
            name = name1;
        }
        else if(left.endsWith(">")) {
            int index = sReverse.indexOf('<');
            int mailLength = index+1-2;//不包含括号
            String mail1 = left.substring(left.length()-1-mailLength,left.length()-1);
            String name1 = left.substring(0,left.length()-mailLength-1-1);
            mail = mail1;
            name = name1;
        }
        return new Message(date,name,mail,content);
    }

    public List<Message> getMessagesById(String id,Date beginTime,Date endTime){
        List<Message> thisList = new ArrayList<>();
        for(Message message:list) {
            if(message.getMail().equals(id)&&message.getDate().before(endTime)&&message.getDate().after(beginTime)) {
                thisList.add(message);
            }
        }
        return thisList;
    }
    public void getChatter() {
        for(Message message:list) {
            Person s = new Person(message.getMail(),message.getName());
            if(personMap.containsKey(s)){
                personMap.put(s, personMap.get(s)+1);
            }
            else {
                personMap.put(s, 1);
            }
        }
        List<Map.Entry<Person, Integer>> mapList = new ArrayList<>(personMap.entrySet());
        Collections.sort(mapList,new Comparator<Map.Entry<Person, Integer>>(){
            public int compare(Entry<Person,Integer> o1,Entry<Person,Integer> o2) {
                return -o1.getValue().compareTo(o2.getValue());
            }
        });
        int i=0;
        for(Map.Entry<Person, Integer> entry:mapList) {
            if(i==1) {
            System.out.println("Chatter is:"+entry.getKey().getName()+""+entry.getKey().getMail()+" 发言次数："+entry.getValue());
            break;
            }
            i++;
        }
    }
}

Message代码如下：

package homework5;

import java.util.Date;

public class Message implements Comparable{
    private Date date;
    private String name;
    private String mail;
    private String content;
    public Date getDate() {
        return date;
    }
    public void setDate(Date date) {
        this.date = date;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getMail() {
        return mail;
    }
    public void setMail(String mail) {
        this.mail = mail;
    }
    public String getContent() {
        return content;
    }
    public void setContent(String content) {
        this.content = content;
    }
    @Override
    public int compareTo(Object arg0) {
        // TODO Auto-generated method stub
        return date.compareTo((Date)arg0);
    }
    public Message(Date date, String name, String mail, String content) {
        super();
        this.date = date;
        this.name = name;
        this.mail = mail;
        this.content = content;
    }
}

Person.java代码如下：

package homework5;
import java.util.*;
public class Person {
    private String mail;
    private String name;
    private List<Message> list = new ArrayList<>();
    public String getMail() {
        return mail;
    }
    public void setMail(String mail) {
        this.mail = mail;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public List<Message> getList() {
        return list;
    }
    public void setList(List<Message> list) {
        this.list = list;
    }
    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((mail == null) ? 0 : mail.hashCode());
        result = prime * result + ((name == null) ? 0 : name.hashCode());
        return result;
    }
    @Override
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        Person other = (Person) obj;
        if (mail == null) {
            if (other.mail != null)
                return false;
        } else if (!mail.equals(other.mail))
            return false;
        if (name == null) {
            if (other.name != null)
                return false;
        } else if (!name.equals(other.name))
            return false;
        return true;
    }
    public Person(String mail, String name) {
        super();
        this.mail = mail;
        this.name = name;
    }
    
}

Test.java代码如下：

package homework5;
import java.util.*;
public class Test {
    public static void main(String[] args) {
        LittleProject lp = new LittleProject();
        lp.execute();//存储messages
        System.out.println("请输入ID：");
        Scanner input = new Scanner(System.in);
        String id = input.next();
        int []time = new int[12];
        System.out.println("请输入开始时间（格式：年 月 日 时 分 秒）");
        for(int i=0;i<6;i++) {
            time[i] = input.nextInt();
        }
        System.out.println("请输入结束时间（格式：年 月 日 时 分 秒）");
        for(int i=6;i<12;i++) {
            time[i] = input.nextInt();
        }
        Calendar calendar = Calendar.getInstance();
        calendar.set(time[0], time[1],time[2],time[3],time[4],time[5]);
        Date begin = calendar.getTime();
        calendar.set(time[6], time[7],time[8],time[9],time[10],time[11]);
        Date end = calendar.getTime();
        List<Message> list = new ArrayList<Message>();
        list = lp.getMessagesById(id, begin, end);
        for(Message message:list) {
            System.out.println(message.getContent());
        }
        //lp.storeStudent();
        lp.getChatter();
    }
}