Nodejs 根据端口获取进程信息
根据端口结束进程
根据名称结束进程

const childProcess = require('child_process'); // nodeJS 自带
const { execSync } = require('child_process');
const exec = childProcess.exec;
const os = require('os');
const platform = os.platform();

const Log = require('./logUtil')

function viewProcessMessage(name, cb) {
    // process 不用引入，nodeJS 自带
    // 带有命令行的list进程命令是：“cmd.exe /c wmic process list full”
    //  tasklist 是没有带命令行参数的。可以把这两个命令再cmd里面执行一下看一下效果
    // 注意：命令行获取的都带有换行符，获取之后需要更换换行符。可以执行配合这个使用 str.replace(/[\r\n]/g,""); 去除回车换行符 
    let processes = []
    let cmd = process.platform === 'win32' ? 'tasklist' : 'ps aux'
    try {
        exec(cmd, function (err, stdout, stderr) {
            if (err) {
                return console.error(err)
            }
            // console.log(stdout)
            stdout.split('\n').filter((line) => {
                let processMessage = line.trim().split(/\s+/)
                let processName = processMessage[0] //processMessage[0]进程名称 ， processMessage[1]进程id
                if (processName === name) {
                    processes.push(processMessage[1])
                }
            })
            cb ? cb(processes) : ""
        }, function (e) {
            console.error(e)
        })
    } catch (e) {
        Log.Info(e)
    }


}

// viewProcessMessage('name.exe',function (msg) {
//   //关闭匹配的进程
//   process.kill(msg)
// })

const stopByName = function (name) {
    viewProcessMessage(name, (list) => {
        if (list && list.length) {
            for (var i = 0; o < list.length; i++) {
                let p = list[i];
                process.kill(p)
            }
        }
    })
}


const GetProcessInfoByPort = (port) =>
    new Promise((resolve, reject) => {
        if (platform === 'win32') {
            const order = `netstat -aon | findstr ${port}`;
            try {
                const stdout = execSync(order);
                const portInfo = stdout.toString().trim().split(/\s+/);
                const pId = portInfo[portInfo.length - 1];
                const processStdout = execSync(`tasklist | findstr ${pId}`);
                const [pName] = processStdout.toString().trim().split(/\s+/);
                resolve({
                    pId,
                    pName,
                });
            } catch (error) {
                reject(error);
            }
        } else {
            const order = `lsof -i :${port}`;
            try {
                const stdout = execSync(order);
                const [pName, pId] = stdout
                    .toString()
                    .trim()
                    .split(/\n/)[1]
                    .split(/\s+/);
                resolve({
                    pId,
                    pName,
                });
            } catch (error) {
                reject(error);
            }
        }
    });

// 删除占用端口的进程
const KillByPort = async (port, title) => {
    try {
        let pinfo = await GetProcessInfoByPort(port)
        if (pinfo) {
            console.log(pinfo)
            Log.Info(`停止${title || ""}进程:${pinfo.pName}-${pinfo.pId}`)
            process.kill(pinfo.pId)
        }
    } catch (e) {
        console.log("")
    }
}
module.exports = { viewProcessMessage, stopByName, GetProcessInfoByPort, KillByPort }