java判斷某個進程是否存在

來源:互聯網
上載者:User

前段時間測試的時候發現用戶端,雙擊表徵圖多次回產生多次XXX.exe.所以在啟動時判斷一下時候有進程已經啟動了,下面把代碼寫出來。


public boolean getProcess(){

  boolean flag=false;

  try{

  Process p = Runtime.getRuntime().exec( "cmd /c tasklist ");

  ByteArrayOutputStream baos = new ByteArrayOutputStream();

  InputStream os = p.getInputStream();

  byte b[] = new byte[256];

  while(os.read(b)> 0)

  baos.write(b);

  String s = baos.toString();

  // System.out.println(s);

  if(s.indexOf( "Besttone.exe ")>=0){

  System.out.println( "yes ");

  flag=true;

  }

  else{

  System.out.println( "no ");

  flag=false;

  }

  }catch(java.io.IOException ioe){

  }

  return flag;

  }



查看進程中是否包含 ie 或者 ff的進程 Process p = Runtime.getRuntime().exec("tasklist ");System.out.println(p);BufferedReader bw = new BufferedReader(new InputStreamReader(p.getInputStream()));String str = "";StringBuffer sb = new StringBuffer();while (true) {str = bw.readLine();if (str != null) {sb.append(str.toLowerCase());} else {break;}}String ff = "firefox.exe";String ie = "iexplore.exe";if (sb.toString().indexOf(ff) != -1) {System.out.println("ff 已經啟動。");}if (sb.toString().indexOf(ie) != -1) {System.out.println("ie 已經啟動。");}

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