Linux スクリプト操作を使用して Java でログ分析を実装する方法

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class LogAnalyzer {

    public static void main(String[] args) {
        try {
            String command = "grep ERROR log.txt | awk '{print $4}'"; // 调用grep和awk命令来匹配错误日志并提取时间戳
            Process process = Runtime.getRuntime().exec(command);
            process.waitFor();

            BufferedInputStream inputStream = new BufferedInputStream(process.getInputStream());
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line); // 输出时间戳
            }

            reader.close();
            process.destroy();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class LogAnalyzer {

    public static void main(String[] args) {
        try {
            List<String> command = new ArrayList<>();
            command.add("/bin/bash"); // 指定使用Bash来执行脚本
            command.add("log_analysis.sh"); // 指定要执行的脚本文件

            ProcessBuilder processBuilder = new ProcessBuilder(command);
            processBuilder.directory(new File("/path/to/script")); // 指定脚本文件所在的目录

            Process process = processBuilder.start();
            process.waitFor();

            BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));

            String line;
            while ((line = reader.readLine()) != null) {
                System.out.println(line); // 输出脚本的输出结果
            }

            reader.close();
            process.destroy();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}