Java 执行CMD命令或执行BAT批处理方式

Java 执行CMD命令或执行BAT批处理

背景

日常开发中总能遇到一些奇怪的需求，例如使用java执行cmd命令或者bat批处理文件，今天就简单记录一下使用过程。

使用

废话不多说直接上代码

import java.io.BufferedReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
public class Cmder {
    /**
     * 执行一个cmd命令
     *
     * @param cmdCommand cmd命令
     * @return 命令执行结果字符串，如出现异常返回null
     */
    public static String executeCmdCommand(String cmdCommand) {
        StringBuilder stringBuilder = new StringBuilder();
        Process process = null;
        try {
            process = Runtime.getRuntime().exec(cmdCommand);
            BufferedReader bufferedReader = new BufferedReader(
                    new InputStreamReader(process.getInputStream(), "GBK"));
            String line = null;
            while ((line = bufferedReader.readLine()) != null) {
                stringBuilder.append(line).append(" ");
            }
            return stringBuilder.toString();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    /**
     * 执行bat文件，
     *
     * @param file          bat文件路径
     * @param isCloseWindow 执行完毕后是否关闭cmd窗口
     * @return bat文件输出log
     */
    public static String executeBatFile(String file, boolean isCloseWindow) {
        String cmdCommand = null;
        if (isCloseWindow) {
            cmdCommand = "cmd.exe /c " + file;
        } else {
            cmdCommand = "cmd.exe /k " + file;
        }
        StringBuilder stringBuilder = new StringBuilder();
        Process process = null;
        try {
            process = Runtime.getRuntime().exec(cmdCommand);
            BufferedReader bufferedReader = new BufferedReader(
                    new InputStreamReader(process.getInputStream(), "GBK"));
            String line = null;
            while ((line = bufferedReader.readLine()) != null) {
                stringBuilder.append(line).append(" ");
            }
            return stringBuilder.toString();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    /**
     * 执行bat文件,新开窗口
     *
     * @param file          bat文件路径
     * @param isCloseWindow 执行完毕后是否关闭cmd窗口
     * @return bat文件输出log
     */
    public static String executeBatFileWithNewWindow(String file, boolean isCloseWindow) {
        String cmdCommand;
        if (isCloseWindow) {
            cmdCommand = "cmd.exe /c start" + file;
        } else {
            cmdCommand = "cmd.exe /k start" + file;
        }
        StringBuilder stringBuilder = new StringBuilder();
        Process process;
        try {
            process = Runtime.getRuntime().exec(cmdCommand);
            BufferedReader bufferedReader = new BufferedReader(
                    new InputStreamReader(process.getInputStream(), "GBK"));
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                stringBuilder.append(line).append(" ");
            }
            return stringBuilder.toString();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    /**
     * 执行bat脚本
     *
     * @param batScript 脚本内容
     * @param location  脚本存储路径
     * @return 结果
     */
    public static String executeBatScript(String batScript, String location) {
        StringBuilder stringBuilder = new StringBuilder();
        FileWriter fw = null;
        try {
            //生成bat文件
            fw = new FileWriter(location);
            fw.write(batScript);
            fw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        Process process;
        try {
            process = Runtime.getRuntime().exec(location);
            BufferedReader bufferedReader = new BufferedReader(
                    new InputStreamReader(process.getInputStream(), "GBK"));
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                stringBuilder.append(line).append(" ");
            }
            return stringBuilder.toString();
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
    /**
     * 执行脚本,不停止,并输出执行结果
     *
     * @param batScript 脚本内容
     * @param location  bat文件生成地址
     */
    public void executeBatScriptAlways(String batScript, String location) {
        FileWriter fw = null;
        try {
            //生成bat文件
            fw = new FileWriter(location);
            fw.write(batScript);
            fw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        StringBuilder stringBuilder = new StringBuilder();
        //运行bat文件
        Process process;
        try {
            process = Runtime.getRuntime().exec(location);
            BufferedReader bufferedReader = new BufferedReader(
                    new InputStreamReader(process.getInputStream(), "GBK"));
            String line;
            while ((line = bufferedReader.readLine()) != null) {
                System.out.println(line);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

Java 执行系统命令

1. windows

1.1 cmd

第一种方法

        File dir = new File("D:\\mysql57\\mysql-5.7.29-winx64\\bin");
        // String command="netstat -an";
        String command = "c:\\windows\\system32\\cmd.exe /c mysqlbinlog  ../data/master-bin.000006 | more";
        Runtime r = Runtime.getRuntime();
        Process p = r.exec(command, null, dir);
        BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
        StringBuffer sb = new StringBuffer();
        String inline;
        while (null != (inline = br.readLine())) {
            sb.append(inline).append("\n");
        }
        System.out.println(sb.toString());

第二种方法

        try {
            File dir = new File("D:\\mysql57\\mysql-5.7.29-winx64\\bin");//此处是指定路径
            String[] cmd = new String[] { "cmd", "/c",
                    "mysqlbinlog -v ../data/master-bin.000006 | more"
            };// cmd[2]是要执行的dos命令
            System.out.println(cmd[2]);
            Process process = Runtime.getRuntime().exec(cmd,null,dir);
            // 记录dos命令的返回信息
            StringBuffer resStr = new StringBuffer();
            // 获取返回信息的流
            InputStream in = process.getInputStream();
            Reader reader = new InputStreamReader(in);
            BufferedReader bReader = new BufferedReader(reader);
            for (String res = ""; (res = bReader.readLine()) != null;) {
                resStr.append(res + "\n");
            }
            System.out.println(resStr.toString());
            bReader.close();
            reader.close();
            process.getOutputStream().close();  // 不要忘记了一定要关
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

windows cmd 命令

后台运行

start /b 程序名字
start /b redis-server.exe redis.windows.conf

关闭程序

taskkill /f /t /im 程序名字
taskkill /f /t /im redis-server.exe

查看进程

根据进程名称 查看进程

tasklist|find /i "redis-server.exe"

以上为个人经验，希望能给大家一个参考，也希望大家多多支持我们。