selenium如何随机选取省份和城市的下拉框的值

        Random random = new Random();
        Select slp = new Select(dr.findElement(By.id("province")));
        int psize = slp.getOptions().size()-1;
        int p = random.nextInt(24);
        slp.selectByIndex(p+1);
        
        Select slc = new Select(dr.findElement(By.id("city")));
        int size = slc.getOptions().size()-1;
        int c = random.nextInt(size);
        slc.selectByIndex(c+1);