創(chuàng)建一個擴(kuò)展HttpServlet然后放@WebServlet包含servlet應(yīng)該偵聽的URL的注釋。
@WebServlet("/yourServletURL")public class YourServlet extends HttpServlet {}就讓<form action> 點到這個URL。我也會推薦對非冪等請求使用POST方法。您應(yīng)該確保您已經(jīng)指定了nameHTML表單輸入字段的屬性(<input>, <select>, <textarea>和<button>)。這表示HTTP請求參數(shù)名。最后，您還需要確保感興趣的輸入字段包含在所需的表單中，因此不包含在外部。
以下是一些不同的例子HTML表單輸入字段:
<form action="${pageContext.request.contextPath}/yourServletURL" method="post">
<p>Normal text field.
<input type="text" name="name" /></p>
<p>Secret text field.
<input type="password" name="pass" /></p>
<p>Single-selection radiobuttons.
<input type="radio" name="gender" value="M" /> Male <input type="radio" name="gender" value="F" /> Female</p>
<p>Single-selection checkbox. <input type="checkbox" name="agree" /> Agree?</p>
<p>Multi-selection checkboxes. <input type="checkbox" name="role" value="USER" /> User
<input type="checkbox" name="role" value="ADMIN" /> Admin</p>
<p>Single-selection dropdown. <select name="countryCode">
<option value="NL">Netherlands</option>
<option value="US">United States</option>
</select></p>
<p>Multi-selection listbox. <select name="animalId" multiple="true" size="2">
<option value="1">Cat</option>
<option value="2">Dog</option>
</select></p>
<p>Text area. <textarea name="message"></textarea></p>
<p>Submit button. <input type="submit" name="submit" value="submit" /></p></form>創(chuàng)建一個doPost()方法，該方法以請求參數(shù)的形式獲取提交的輸入值，該參數(shù)由輸入字段的name(不 id！)。你可以用request.getParameter()從單值字段獲得提交的值，并且request.getParameterValues()若要從多值字段獲取提交的值，請執(zhí)行以下操作。
@Overrideprotected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String name = request.getParameter("name");
String pass = request.getParameter("pass");
String gender = request.getParameter("gender");
boolean agree = request.getParameter("agree") != null;
String[] roles = request.getParameterValues("role");
String countryCode = request.getParameter("countryCode");
String[] animalIds = request.getParameterValues("animalId");
String message = request.getParameter("message");
boolean submitButtonPressed = request.getParameter("submit") != null;
// ...}必要時做一些驗證最后，按照通常的方式將其保存在DB中。JDBC/道方式，道路。
User user = new User(name, pass, roles);userDAO.save(user);
另見：
