一、概述

启动项目时，检测macos 上 Redis 是否启动，未启动，则启动。

二、代码

/*** 用途: 项目启动时检查 redis，未启动则启动（开发环境）** @author: ADAM* @create: 2024/04/28 14:45* @version: 1.0*/
@Slf4j
@Component
@Profile("dev")
public class RedisServiceChecker implements CommandLineRunner {@Overridepublic void run(String... args) throws Exception {boolean flag = isRedisRunning();log.info("Redis启动状态：" + flag);if (!flag) {startRedis();}}/*** 功能：检测 redis 是否启动* @param* @return: boolean* @author: ADAM* @date: 2024/4/28 15:15*/private boolean isRedisRunning() {boolean hasRedis = false;try {// 整个命令作为一个List传给Runtime.getRuntime().exec()，避免字符串中嵌套引号和转义字符的问题String[] cmd = {"/bin/bash", "-c", "ps aux | grep redis-server"};Process process = Runtime.getRuntime().exec(cmd);// 读取命令的输出和错误输出BufferedReader stdoutReader = new BufferedReader(new InputStreamReader(process.getInputStream()));BufferedReader stderrReader = new BufferedReader(new InputStreamReader(process.getErrorStream()));String line;// 同时读取输出和错误流while ((line = stdoutReader.readLine()) != null || (line = stderrReader.readLine()) != null) {if (line != null) {log.info("line: " + line); // 打印出来帮助调试，看是否有预期的输出if (line.trim().contains("redis-server") && !line.trim().contains("grep redis-server")) {hasRedis = true;break; // 找到有效Redis进程行，可以提前结束循环}}}// 确保流关闭stdoutReader.close();stderrReader.close();// 检查是否找到Redis进程if (hasRedis) {log.info("Redis服务正在运行");} else {log.info("未找到Redis服务运行");}} catch (IOException e) {e.printStackTrace();}// 如果没有找到Redis进程，则认为Redis没有运行return hasRedis;}private void startRedis() throws IOException, InterruptedException {log.info("尝试启动Redis服务...");String redisBinaryPath = "redis-server";String[] command = {redisBinaryPath, "--daemonize", "yes"};ProcessBuilder pb = new ProcessBuilder(command);pb.redirectErrorStream(true); // 将错误输出重定向到标准输出，以便统一处理// 设置环境，以便sudo不提示输入密码（需要提前配置sudoers文件）Map<String, String> env = pb.environment();env.put("PASSWORD", "");// 启动进程Process process = pb.start();// 读取输出和错误流，用于日志或进一步处理BufferedReader stdoutReader = new BufferedReader(new InputStreamReader(process.getInputStream()));BufferedReader stderrReader = new BufferedReader(new InputStreamReader(process.getErrorStream()));String line;while ((line = stdoutReader.readLine()) != null) {log.info("STDOUT: " + line);}while ((line = stderrReader.readLine()) != null) {log.error("STDERR: " + line);}// process.waitFor()的作用是阻塞当前线程，直到子进程（即启动的Redis服务）结束。int exitCode = process.waitFor();if (exitCode == 0) {log.info("Redis服务启动成功！");} else {log.error("Redis服务启动失败，退出码: " + exitCode);}// 确保流关闭stdoutReader.close();stderrReader.close();}
}