????????????
1 <select id="user_select" name="agreement.owner">
2 <option value="user1">????</option>
3 <option value="user2">????</option>
4 </select>
????Select??????????
????1. selectByVisibleText???????б??У?????????????????????

1    Select select = new Select(driver.findElementById("user_select"));
2    select.selectByVisibleText("????");
????2. selectByIndex???????б??У????????λ?????????

1    Select select = new Select(driver.findElementById("user_select"));
2    select.selectByIndex(1);
?????????
????1. index????0?????
????2. selectByValue???????б??У????????value??????????????

1    Select select = new Select(driver.findElementById("user_select"));
2    select.selectByValue("user1");