修正flowable的发起流程中根据用户信息流转不同的流程

/**
     * 校验el表达示例
     *
     * @param map
     * @param expression
     * @return
     */
    public static Object result(Map<String, Object> map, String expression) {
      Object result = null; 
      try {
          FelEngine fel = new FelEngineImpl();
          FelContext ctx = fel.getContext();
          for (Map.Entry<String, Object> entry : map.entrySet()) {
              ctx.set(entry.getKey(), entry.getValue());
              System.out.print(entry.getKey() + "-"+ entry.getValue());
          }
          String exp = "";
          if (expression.indexOf("<") >0) {
            exp = expression.substring(0, expression.indexOf("<"));
          }
          else if (expression.indexOf(">") >0) {
            int index =expression.indexOf(">");
            exp = expression.substring(0, index);
          }
          else if (expression.indexOf("==") >0) {
            exp = expression.substring(0, expression.indexOf("=="));
          }
          exp =expression.replace(exp, ctx.get(exp).toString());
          result = fel.eval(exp);
          //result = fel.eval(expression);
    } catch (Exception e) {
      result = null;  
    }
       return result;
    }

usermap =  GetExclusiveGatewayUser(targetFlowElement,variables);//还是需要返回用户与是否并发，因为并发要做特殊处理
             if(usermap != null) {
             userlist = (ArrayList<String>) usermap.get("approval");
               variablesnew.put("approval", userlist);
             }