ChatBot返回错误

Question

我正在做一个聊天机器人项目，我几乎完成了，除了当我输入一个输入时，它会根据输入X的长度返回多个输出。

以下是源代码：

import java.util.*;
public class ChatBot
{
public static String getResponse(String value)
{
    Scanner input = new Scanner (System.in);
    String X = longestWord(value);
    if (value.contains("you"))
    {
        return "I'm not important. Let's talk about you instead.";
    }
    else if (X.length() <= 3)
    {
        return "Maybe we should move on. Is there anything else you would like to talk about?";
    }
    else if (X.length() == 4)
    {
        return "Tell me more about " + X;
    }

    else if (X.length() == 5)
    {
        return "Why do you think " + X + " is important?";
    }

    return "Now we are getting somewhere. How does " + X + " affect you the most?";
}

private static String longestWord(String value){
    Scanner input = new Scanner (value);
    String longest = new String();
    "".equals(longest);

    while (input.hasNext())
    {
        String temp = input.next();
        if(temp.length() > longest.length())
        {
            longest = temp;
        }
    }
    return longest;
}

}

这是用于测试聊天机器人：

import java.util.Scanner;


public class Test {
    public static void main (String [ ] args)
    {
    Scanner input = new Scanner (System.in);
    ChatBot e = new ChatBot();
    String prompt = "What would you like to talk about?";
    System.out.println(prompt);
    String userInput;
    userInput = input.next();
    while (!userInput.equals("Goodbye"))
    {
        System.out.println(e.getResponse(userInput));
        userInput = input.next();
    }

}
}

I am also trying to modify the Bot so it counts the number of times it has responded; and also modify it so it randomly returns a random response depending on the length of the input. Any help will be much appreciated. Thank You!

Answer 1

您使用的是Scanner.next方法，它只返回字符串中的下一个单词。因此，如果您输入一个字符串的多个字，您的机器人将响应其中的每一个。

您可以使用Scanner.nextLine()获取整个输入字符串，而不仅仅是一个单词。

要计算bot响应的次数，可以在bot类中创建一个字段：

private int responseCount = 0;

然后，如果将yout getResponse方法从静态方法更改为实例方法，则可以从此方法更新此值：

public String getResponse(String value)
{
    String X = longestWord(value);  //Your longestWord should also not be static.
    this.responseCount++;        

    if (value.contains("you"))
    {
        ...

Answer 2

关于计算响应，只需修改您的主要方法：

import java.util.Scanner;

public class Test {
public static void main (String [ ] args)
{
   int numberOfResponses = 1;
   Scanner input = new Scanner (System.in);
   ChatBot e = new ChatBot();
   String prompt = "What would you like to talk about?";
   System.out.println(prompt);
   String userInput;
   userInput = input.next();
   while (!userInput.equals("Goodbye"))
   {
      System.out.println(e.getResponse(userInput));
      userInput = input.nextLine();
      numberOfResponses++;
   }
   input.close();
   System.out.println(numberOfResponses);
}
}

如果我有时间，我将在几分钟内编辑我的帖子，以检查你的问题有关的双重外观的回应。你还忘了关闭扫描仪。

编辑:实际上之所以发生这种情况，是因为扫描仪默认设置分隔符为空格。因此，如果使用空格输入文本，则会为一个用户输入运行两次while循环。只需使用nextLine()命令即可。

为什么这个代码：

 Scanner input = new Scanner (System.in);

在你的getResponse方法中？根本没用过。仔细看看你的方法，因为它们包含一些奇怪的代码。