可以寫什麼輸出到HTML文件？

Question

我想要做的是讓程序運行時它將以普通的方式運行，但如果用戶選擇他們希望顯示在HTML中，那麼它將運行普通程序將執行的操作，而不是顯示它將在控制檯中將控制檯中出現的內容寫入用戶指定的html文件中。這可能嗎？我有代碼接受用戶輸入，並讓他們指定他們想要的格式以及打開瀏覽器，但我不確定這是否可行。我已經將代碼如下：

import java.awt.Desktop; 
import java.io.*; 
import java.util.*; 

public class reader { 
    static int validresults = 0; 
    static int invalidresults = 0; 
    // Used to count the number of invalid and valid matches 

    public static boolean verifyFormat(String[] words) { 
     boolean valid = true; 

     if (words.length != 4) { 
      valid = false; 
     } else if (words[0].isEmpty() || words[0].matches("\\s+")) { 
      valid = false; 
     } else if (words[1].isEmpty() || words[1].matches("\\s+")) { 
      valid = false; 
     } 

     return valid && isInteger(words[2]) && isInteger(words[3]);} 

    // Checks to see that the number of items in the file are equal to the four needed and the last 2 are integers 
    // Also checks to make sure that there are no results that are just whitespace 
    public static boolean isInteger(String input) { 
     try { 
      Integer.parseInt(input); 
      return true; 
     } 
     catch (Exception e) { 
      return false; 
     } 
    } 
    // Checks to make sure that the data is an integer 

    public static void main(String[] args) throws IOException { 
     Scanner sc = new Scanner(System.in); 

     while (true) { // Runs until it is specified to break 
      Scanner scanner = new Scanner(System.in); 

      System.out.println("Enter filename"); 
      String UserFile = sc.nextLine(); 
      File file = new File(UserFile); 

      if (!file.exists()) { 
       continue; 
      } 

      if (UserFile != null && !UserFile.isEmpty()){ 
       System.out.println("Do you want to generate plain (T)ext or (H)TML"); 
       String input = scanner.nextLine(); 
       if (input.equalsIgnoreCase("H")) { 
        Desktop.getDesktop().browse(file.toURI()); 
       } else if (input.equalsIgnoreCase("T")) { 
         processFile(UserFile); 
       } else { 
        System.out.println("Do you want to generate plain (T)ext or (H)TML"); 
       } 
      } 
      } 
     } 

    // Checks how the user wants the file to be displayed 
    private static void processFile(String UserFile) throws FileNotFoundException { 
     String hteam; 
     String ateam; 
     int hscore; 
     int ascore; 
     int totgoals = 0; 

     Scanner s = new Scanner(new BufferedReader(
       new FileReader(UserFile))).useDelimiter("\\s*:\\s*|\\s*\\n\\s*"); 

     while (s.hasNext()) { 
      String line = s.nextLine(); 
      String[] words = line.split("\\s*:\\s*"); 
      // Splits the file at colons 

      if(verifyFormat(words)) { 
       hteam = words[0];  // read the home team 
       ateam = words[1];  // read the away team 
       hscore = Integer.parseInt(words[2]);  //read the home team score 
       totgoals = totgoals + hscore; 
       ascore = Integer.parseInt(words[3]);  //read the away team score 
       totgoals = totgoals + ascore; 
       validresults = validresults + 1; 

       System.out.println(hteam + " " + "[" + hscore + "]" + " " + "|" + " " + ateam + " " + "[" + ascore + "]"); 
       // Output the data from the file in the format requested 

      } 
      else{ 
       invalidresults = invalidresults + 1; 
      } 
     } 

     System.out.println("Total number of goals scored was " + totgoals); 
     // Displays the the total number of goals 
     System.out.println("Valid number of games is " + validresults); 
     System.out.println("Invalid number of games is " + invalidresults); 

     System.out.println("EOF"); 
    } 
} 

Answer 1

//This is where we'll write the HTML to if the user's chooses so 
private static final String OUTPUT_FILENAME = "output.html"; 

public static void main(String[] args) throws IOException 
{ 
    final Scanner scanner = new Scanner(System.in); 
    final String content = "Foobar"; 

    final boolean toHtml; 
    String input; 

    //Get the user's input 
    do 
    { 
     System.out.print("Do you want messages " 
       + "written to (P)lain text, or (H)TML? "); 

     input = scanner.nextLine(); 
    } while (!(input.equalsIgnoreCase("p") 
      || input.equalsIgnoreCase("h"))); 

    toHtml = input.equalsIgnoreCase("h"); 

    if (toHtml) 
    { 
     //Redirect the standard output stream to the HTML file 
     final FileOutputStream fileOut //False indicates we're not appending 
       = new FileOutputStream(OUTPUT_FILENAME, false); 
     final PrintStream outStream = new PrintStream(fileOut); 

     System.setOut(outStream); 
    } 

    System.out.println(toHtml 
      ? String.format("<p>%s</p>", content) //Write HTML to file 
      : content); //We're not writing to an HTML file: plain text 
}