Java执行linux服务器本地命令

缘故：有一台服务器上有个mysql，外部访问不到，另外此服务器性能不好，原本使用jdbc游标批量将数据拉出处理，可执行一段时间就出线连接过多、tmp等问题。最后采用mysql将数据导出到csv，再读取csv处理后结束，性能直接提示多少倍，爽！

Java执行命令程序

package com.funmz.vos2gaid2black.task;import com.alibaba.fastjson.JSON;
import lombok.extern.slf4j.Slf4j;import java.io.File;
import java.io.IOException;
import java.util.concurrent.TimeUnit;@Slf4j
public class ShellExecutor {public static boolean executeMysqlToCsv(String tableName) {try {// 定义命令数组String[] cmd = {"bash", "-c",// 因为此服务器封闭，且无外部端口开放，此数据也没有设置密码等安全问题。"mysql -N  -u root  -Nse \"SELECT DISTINCT SUBSTR(calleee164, LENGTH(calleee164) - 10) AS tphone FROM vos3000." + tableName + " WHERE endreason = -93\" | sed 's/^/\"/;s/$/\"/' > /root/taskjar/tempcsv/" + tableName + ".csv"};log.info("执行命令：{}", JSON.toJSONString(cmd));// 创建 ProcessBuilder 实例ProcessBuilder processBuilder = new ProcessBuilder(cmd);processBuilder.directory(new File("/root/taskjar/tempcsv")); // 设置工作目录（可选）// 合并错误流到标准输出（可选）processBuilder.redirectErrorStream(true);// 启动进程Process process = processBuilder.start();// 等待命令执行完成
//            int exitCode = process.waitFor();boolean waitFor = process.waitFor(1L, TimeUnit.MINUTES);if (!waitFor) {log.error("执行超时，请检查命令是否正确。");}
//            System.out.println("Shell command exited with code: " + exitCode);
//            System.out.println("Shell command exited with waitFor: " + waitFor);log.info("Shell command exited with waitFor: " + waitFor);return waitFor;//            if (exitCode == 0) {
//                System.out.println("CSV 文件生成成功！");
//            } else {
//                System.err.println("执行失败，请检查 MySQL 连接或权限问题。");
//            }} catch (IOException | InterruptedException e) {e.printStackTrace();}return false;}}