Java去掉 txt 文件中的空格空行【代码记录】

不念不忘少年蓝@ 2023-10-12 19:02 59阅读 0赞

#### 文章目录 ####

*   *  1、需求
     *  2、代码
     *  3、结果

### 1、需求 ###

![在这里插入图片描述][093260e9d77c49b095a1ac1e0545010b.png]

### 2、代码 ###

package com.zibo.main;
    
    import java.io.BufferedReader;
    import java.io.FileReader;
    import java.io.FileWriter;
    import java.io.IOException;
    import java.util.regex.Matcher;
    import java.util.regex.Pattern;
    
    public class RemoveSpacesAndEmptyLines {
        
    
        public static void main(String[] args) {
        
            String inputFile = "C:\\Users\\Administrator\\Desktop\\video_film.txt";
            String outputFile = "C:\\Users\\Administrator\\Desktop\\video_film_no_spaces.txt";
    
            try {
        
                // 读取输入文件
                BufferedReader reader = new BufferedReader(new FileReader(inputFile));
                StringBuilder content = new StringBuilder();
                String line;
                while ((line = reader.readLine()) != null) {
        
                    content.append(line).append("\n");
                }
                reader.close();
                // 去除空格和空行
                String cleanedContent = removeSpacesAndEmptyLines(content.toString());
                // 写入输出文件
                FileWriter writer = new FileWriter(outputFile);
                writer.write(cleanedContent);
                writer.close();
                System.out.println("去除空格和空行完成。");
            } catch (IOException e) {
        
                e.printStackTrace();
            }
        }
    
        private static String removeSpacesAndEmptyLines(String text) {
        
            // 去除空格
            Pattern spacePattern = Pattern.compile("\\s+");
            Matcher spaceMatcher = spacePattern.matcher(text);
            text = spaceMatcher.replaceAll("");
            // 去除空行
            Pattern emptyLinePattern = Pattern.compile("^\\s*$", Pattern.MULTILINE);
            Matcher emptyLineMatcher = emptyLinePattern.matcher(text);
            text = emptyLineMatcher.replaceAll("");
            return text;
        }
    }

### 3、结果 ###

![在这里插入图片描述][0f53e34048ce40c3b267f01fdbda7795.png]

[093260e9d77c49b095a1ac1e0545010b.png]: https://img-blog.csdnimg.cn/093260e9d77c49b095a1ac1e0545010b.png
[0f53e34048ce40c3b267f01fdbda7795.png]: https://img-blog.csdnimg.cn/0f53e34048ce40c3b267f01fdbda7795.png