Java执行cmd命令

1.Java执行cmd

public void executeCMD() {
    try {
        Runtime mt = Runtime.getRuntime();
        String cmd = "ping 127.0.0.1";
        Process pro = mt.exec(cmd);
        InputStream ers= pro.getErrorStream();
        pro.waitFor();
    } catch (IOException ioe) {
        ioe.printStackTrace();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

2.Java执行Bat

1.绝对路径

// An highlighted block
public void executeBat() {
    try {
        Runtime run = Runtime.getRuntime();
        String cmd = "E:\\Re-Architecture\\test.bat"
        Process pro = run.exec(cmd);
        InputStream ers= pro.getErrorStream();
        pro.waitFor();
    } catch (IOException ioe) {
        ioe.printStackTrace();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

2.要跨盘符

// An highlighted block
public void executeCMD() {
    try {
        Runtime run = Runtime.getRuntime();
        Process pro =run.exec("cest.bat",null,new File("E:\\Re-Architecture\\"));
        InputStream ers= pro.getErrorStream();
        pro.waitFor();
    } catch (IOException ioe) {
        ioe.printStackTrace();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

3.Java执行exe

// An highlighted block
public void executeExe() {
    try {
        Runtime run = Runtime.getRuntime();
        Process pro =run.exec("cmd /c E:\\Re-Architecture\\test.exe"));
        InputStream ers= pro.getErrorStream();
        pro.waitFor();
    } catch (IOException ioe) {
        ioe.printStackTrace();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

4.Java执行快捷图标

// An highlighted block
public void executeBat() {
    try {
        Runtime mt = Runtime.getRuntime();
        String cmd = "rundll32 SHELL32.DLL,ShellExec_RunDLL "+"E:\\ImportMetapediaCMD\\noUAC.CreateMetapedia.lnk";
        Process pro = mt.exec(cmd);
        InputStream ers= pro.getErrorStream();
        pro.waitFor();
    } catch (IOException ioe) {
        ioe.printStackTrace();
    } catch (InterruptedException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
}

5.查看log

// An highlighted block
public class RuntimeTest {
    public static void main(String[] args) {
        RuntimeTest s = new RuntimeTest();
        s.test();
    }
    public void test(){
        Runtime run =Runtime.getRuntime();
        try {
            Process p = run.exec("ping 127.0.0.1");
            InputStream ins= p.getInputStream();
            InputStream ers= p.getErrorStream();
            new Thread(new inputStreamThread(ins)).start();
            p.waitFor();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }
    class inputStreamThread implements Runnable{
        private InputStream ins = null;
        private BufferedReader bfr = null;
        public inputStreamThread(InputStream ins){
            this.ins = ins;
            this.bfr = new BufferedReader(new InputStreamReader(ins));
        }
        @Override
        public void run() {
            String line = null;
            byte[] b = new byte[100];
            int num = 0;
            try {
                while((num=ins.read(b))!=-1){
                    System.out.println(new String(b,"gb2312"));
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

6.报警

1.java.io.IOException: Cannot run program “****”: CreateProcess error=2

// 语法错误，即命令不能被正确识别
run.exec("%comspec% /c \ceshi\ceshi.bat");
//正确语法
run.exec(new String[]{"cmd","/c","%comspec% /c \ceshi\ceshi.bat"},null,null);

2.java.lang.IllegalArgumentException: Executable name has embedded quote,split the arguments

// 可能是命令中有空格识别异常，可以试着把空格转成带引号的空格
run.exec("c:\\ceshi file\\ceshi.bat".replace(" ","" ""))

3.bat命令在CMD窗口中可以正常执行，但通过java的Runtime执行就会阻塞，八成可能是命令执行中开了新窗口，但老窗口没关导致的

// An highlighted block
run.exec(new String[]{"cmd","/k","ceshi.bat"},null,new File("d:\\ceshi\\"));
要把“/k”换成“/c”
run.exec(new String[]{"cmd","/c","ceshi.bat"},null,new File("d:\\ceshi\\"));