java - 更新 Java 中嵌套 hashmap 的值

Question

我需要根据从文件中获取的值更新嵌套的 HashMap 。我能够从文件中获取正确的值，但只有最后一个值会更新为 HashMap 中的所有 header 值。我的代码错误在哪里？代码如下:

import java.net.*;
import java.io.*;
import java.util.*;

public class ParseMap {
    public static void main(String args[]) {
        BufferedReader reader;
        HashMap<String, HashMap<String, String>> hMap = new HashMap<String, HashMap<String, String>>();
        HashMap<String, String> innerMap = new HashMap<String, String>();
        String header = "";
        try {
            reader = new BufferedReader(new FileReader(
                    "file.txt"));
            String line = reader.readLine();
            while (line != null) {
                if (line.contains("CallMade")) {
                    String[] words = line.split(",");

                    for(int i=0; i<words.length; i++) {
                        if (words[i].startsWith("CallId")) {
                            header = words[i];
                        }
                    }
                    hMap.put(header, innerMap);
                }
                else if (line.contains("details") && line.contains(header)) {
                    String[] words = line.split(",|:");
                    System.out.println(header);

                    for(int i=0; i<words.length; i++) {
                        System.out.println(words[i]);
                        if (words[i].equals(" Agentdetails")) {

                            HashMap<String, String> inMap = hMap.get(header);
                            if (inMap == null) {
                                hMap.put(header, inMap = new HashMap<>()); 
                            }
                            inMap.put("Agent", words[i+1]);
                            inMap.put("AgentID", words[i+2]);                                
                        }
                    }
                 }
           line = reader.readLine();
           }
           reader.close();
        }
        catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println(hMap);
    }
}

文件.txt

[Call  ] 15:40:35.688 CallMade,Telenet,,CallId53,123456789,5674,02Apr
[CallId53 ] Agentdetails,John,12,21
[Call  ] 15:42:39.324 CallMade,Airtel,,CallId54,123456789,5674,02Apr
[CallId54 ] Agentdetails,James,10,20
[Call  ] 15:43:39.324 CallMade,Airtel,,CallId55,123456789,5674,02Apr
[Call  ] 15:43:40.324 CallMade,Airtel,,CallId56,123456789,5674,02Apr
[CallId55 ] Agentdetails,Jimmy,5,100
[CallId56 ] Agentdetails,Robert,18,120

在这里，如果我打印单词列表的值，那么我会得到正确的值，但如果我在放置值后打印 HashMap ，则只有 Agent 和 AgentId 的最后一个值> 被放入 hashedmap 中的所有 header 。如何纠正错误？提前致谢!

Answer 1

在我看来，您的文本文件结构良好，所有调用详细信息都列在相应的代理详细信息之前，我将推荐如下所示的内容:

public static void main(String[] args) {
    BufferedReader reader;
    HashMap<String, HashMap<String, String>> hMap = new HashMap<>();
    try {
        reader = new BufferedReader(new FileReader("file.txt"));
        String line;
        while ((line = reader.readLine()) != null) {
            if(line.startsWith("[Call ")){
                String callId = line.split(",")[3];
                hMap.put(callId, new HashMap<>());
            }
            else if(line.startsWith("[CallId")){
                String callId = line.substring(line.indexOf('[')+1, line.indexOf(']')).trim();
                hMap.get(callId).put("Agent", line.split(",")[1]);
                hMap.get(callId).put("AgentId", line.split(",")[2]);
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    System.out.println(hMap);
}