java - 在Java中逐行读取和替换特定单词的问题

Question

我尝试读取的文本文件的一个示例是tarzan.txt


我的程序实质上允许用户玩Mad-Lib游戏，在该游戏中，他将用所请求的描述（形容词，复数名词等）替换文本文件中的占位符。

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

public class MadLibs {
   public static void main(String[] args) throws FileNotFoundException {
      intro();
      System.out.println();
      Scanner console = new Scanner(System.in);

      boolean continueGame = true;

      while (continueGame == true) {
         continueGame = gameMenu(console);
      } 
   }

   public static void intro() {
      System.out.println("Welcome to the game of Mad Libs.");
      System.out.println("I will ask you to provide various words");
      System.out.println("and phrases to fill in a story.");
      System.out.println("The result will be written to an output file.");
   }

   public static boolean gameMenu(Scanner console) throws FileNotFoundException {
      System.out.print("(C)reate mad-lib, (V)iew mad-lib, (Q)uit? ");
      String userChoice = console.next();

      if (userChoice.equalsIgnoreCase("c")) {
         createMadLib(console);
         return true;
      } else if (userChoice.equalsIgnoreCase("v")) {
         viewMadLib(console);
         return true;
      } else if (userChoice.equalsIgnoreCase("q")) {
         return false;
      } else {
         return true; //keep continuing even if user input is irrelevant 
      }
   }

   public static void createMadLib(Scanner console) throws FileNotFoundException {
      System.out.print("Input file name: ");
      String fileName = console.next();
      File textFile = new File(fileName);

      while (!textFile.exists()) {
         System.out.print("File not found. Try again: ");
         fileName = console.next();
         textFile = new File(fileName);
      }
      System.out.print("Output file name: ");
      String output = console.next();
      PrintStream outputFile = new PrintStream(output);

      Scanner fileRead = new Scanner(textFile);

      while (fileRead.hasNextLine()) {
         String word = fileRead.next();

         if (word.startsWith("<") && word.endsWith(">")) {
            char vowel = word.charAt(1);

            String beforeVowel = "";
            if (vowel == 'a' || vowel == 'A' ||
                vowel == 'e' || vowel == 'E' ||
                vowel == 'i' || vowel == 'I' ||
                vowel == 'o' || vowel == 'O' ||
                vowel == 'u' || vowel == 'U') {
               beforeVowel = " an";
            } else {
               beforeVowel = " a";
            }
            word = word.replace("<", " ");
            word = word.replace(">", " ");
            word = word.replace("-", " ");
            System.out.print("Please type" + beforeVowel + word + ": ");
            String inputWord = console.next();
            outputFile.print(" " + inputWord + " ");
         } else {
            outputFile.print(" " + word + " ");
         }
      }
      System.out.println("Your mad-lib has been created!");
   }

我目前遇到的问题是文本文件中有多个占位符的行，例如第五行。当程序读取到该特定行时，它提示用户同时键入复数名词和名词，而不是分别要求用户输入单词



这是程序问题的当前输出，我的预期输出是通过这种方式提示用户：


  请输入一个复数名词：bees


一旦用户输入了一个单词，程序便会在文本文件的同一行分别询问一个名词


  请输入一个复数名词：bees
  
  请输入一个名词：

Answer 1

将console.next()替换为console.nextLine()。

使用next（）将仅返回定界符之前的内容（默认为空白）。返回当前行后，nextLine（）会自动将扫描仪向下移动。