Question

由于某种原因，当使用我的缓冲读取器读取.mcf（地图配置文件）时，它将无法正确找到字符。这就是我用于测试的目的。

RendererPanel.java：

        File file = new File("src/net/PlatformPeril/resources/Railroad.mcf");
    BufferedReader br = null;
    try {
        br = new BufferedReader(new FileReader(file));
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    }
    String line;
    try {
        while ((line = br.readLine()) != null) {
        if(line.equalsIgnoreCase("0")){
            System.out.println("Air Block!");
        }else if(line.equalsIgnoreCase("1")){
            System.out.println("Rock Block!");
        }else if(line.equalsIgnoreCase(" ")){
            System.out.println("Empty Line Char; Ignoring");
            continue;
        }else System.out.println("What!");
        }
    } catch (IOException e) {
        e.printStackTrace();
    }
    try {
        br.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

MCF：

1 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0
0 1 1 0 1 0 1 1 1 1 0 0 1 0 0 0 1 1 0 1 0 1 0 1 1 0 1
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

而且，我得到了很多'什么！'.... 我知道我做错了什么？

Answer 1

当你比较第一个令牌时，你正在比较整行，看看string.split来帮助

Answer 2

此line.equalsIgnoreCase(" "）可能会导致问题，请尝试使用line.trim().isEmpty()

Answer 3

让文件包含以下内容 -

0

1

0

1

考虑一个空行

1

以下程序运行正常，与您的相同，但有一些改进。

package com.kvvssut.misc;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class BufferReaderTester {

    public static void main(String[] args) {
        processFile("C:\\Users\\srimanta_sahu\\Desktop\\MyText.mcf");
    }

    private static void processFile(String string) {
        BufferedReader bufferedReader = null;
        FileReader fileReader = null;
        try {
            fileReader = new FileReader(new File(string));
            bufferedReader = new BufferedReader(fileReader);

            String currentLine;
            while ((currentLine = bufferedReader.readLine()) != null) {
                currentLine = currentLine.trim();
                if(currentLine.equals("0")){
                    System.out.println("Air Block!");
                } else if (currentLine.equals("1")){
                    System.out.println("Rock Block!");
                } else if(currentLine.equals("")){
                    System.out.println("Empty Line Char; Ignoring");
                }else {
                    System.out.println("What!");
                }
            }
        } catch (FileNotFoundException fileNotFoundException) {
            fileNotFoundException.printStackTrace();
        } catch (IOException ioException) {
            ioException.printStackTrace();
        } finally {
            if (bufferedReader != null) {
                try {
                    bufferedReader.close();
                    fileReader.close();
                } catch (IOException ioException) {
                    ioException.printStackTrace();
                }
            }
        }
    }

}

Plz不要使用不必要的equalsIgnoreCase来检查整数，如果它不需要做任何事情就不要使用continue！

BufferedReader没有正确读取

3 个答案: