用java读取nginx.conf内容,保留原有格式写入到nginx2.conf

下面是用 Java 读取 nginx.conf 并将内容保留原有格式写入到 nginx2.conf 的例子：

import java.io.*;

public class ReadNginxConf {
    public static void main(String[] args) {
        // 读取文件
        BufferedReader reader = null;
        try {
            reader = new BufferedReader(new FileReader("nginx.conf"));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }

        // 写入文件
        BufferedWriter writer = null;
        try {
            writer = new BufferedWriter(new FileWriter("nginx2.conf"));
        } catch (IOException e) {
            e.printStackTrace();
        }

        // 读取并写入
        String line;
        try {
            while ((line = reader.readLine()) != null) {
                writer.write(line);
                writer.newLine();  // 这一行很重要，保留原有的换行格式
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        // 关闭流
        try {
            reader.close();
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}