Java：如何获取文本文件内容

#Java 笔记

方式1: 使用 BufferedReader

import java.io.*;
import java.nio.charset.StandardCharsets;

public class Demo {

    public static void main(String[] args) throws IOException {
        String filePath = "/Users/letian/.bashrc";
        InputStreamReader inputStreamReader = new InputStreamReader(new FileInputStream(filePath), StandardCharsets.UTF_8);
        BufferedReader br = new BufferedReader(inputStreamReader);

        try {
            StringBuilder sb = new StringBuilder();
            String line = br.readLine();

            while (line != null) {
                sb.append(line);
                sb.append(System.lineSeparator());
                line = br.readLine();
            }
            String content = sb.toString();
            System.out.println(content);
        } finally {
            br.close();
        }
        
    }
}

方式2: 使用 Files.readAllLines

代码示例：

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;

public class Demo {

    public static void main(String[] args) throws IOException {
        Path path = Paths.get("/Users/letian/.bashrc");
        List<String> lines = Files.readAllLines(path, StandardCharsets.UTF_8);
        for (String line : lines) {
            System.out.println( line );
        }
    }
}

( 本文完 )