code: function (jsonObj, successCB, failedCB) {
      var $t = this;
  
      var _json = jsonObj || {};
  
      // 传递参数
      var newJson = {
        'command': ' --port=' + $bc_$5.App.getServerPort(), // {要求string}
        'currentDirectoryPath': _json.currentDirectoryPath || '',
        'environmentDic': _json.environmentDic || {},
        'mainThread': _json.mainThread !== false
      };
  
      $t.exec(newJson, successCB, failedCB);
    }
docs: 启动Python假设的WebServer
  @param jsonObj
  @param successCB
  @param failedCB