我有主页,当我点击引用Servlet时不起作用,我得到404错误。我想问题在web.xml
映射,但一个不明白的地方。请帮我解决这个问题。谢谢。请勿使用servlet。在web.xml中使用servlet映射的问题
我web.xml
<!--Homepage.-->
<servlet>
<servlet-name>HomePageServlet</servlet-name>
<servlet-class>ru.pravvich.servlets.HomePageServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HomePageServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!--Add user in database.-->
<servlet>
<servlet-name>AddUserServlet</servlet-name>
<servlet-class>ru.pravvich.servlets.AddUserServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>AddUserServlet</servlet-name>
<url-pattern>/addition</url-pattern>
</servlet-mapping>
我的JSP网页:
<body>
<ul>
<li><a href="addition.jsp">addition</a></li>
</ul>
</body>
而且随着doGet
方法为它的servlet:
public class HomePageServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("UTF8");
req.getRequestDispatcher("/WEB-INF/views/index.jsp").forward(req,resp);
}
}
而且通过http://localhost:8080/items/
我得到我的主页。
但是,当我在参考单击从index.jsp
,返回:HTTP Status [404] – [Not Found]
我addition.jsp
同样横亘在/WEB-INF/views/addition.jsp
我的servlet工作与addition.jsp
:
public class AddUserServlet extends HttpServlet {
private DBJoint db;
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
db = (DBJoint) getServletContext().getAttribute("db");
db.getDBExecutor().addUser(
new User(req.getParameter("name"),
req.getParameter("login"),
req.getParameter("email")));
req.setAttribute("serverAnswer", "Add ok!");
req.getRequestDispatcher("/WEB-INF/views/answer.jsp").forward(req, resp);
}
}
而且addition.jsp
:
<body>
<form method="post" action="addition">
<input type="text" required placeholder="name" name="name"><br>
<input type="text" required placeholder="login" name="login"><br>
<input type="text" required placeholder="email" name="email"><br>
<input type="submit" value="add">
</form>
</body>
谢谢。但是我在AddUserServlet和addition.jsp之间的数据传输没有问题。我的问题:我的参考文献'
你试过这样吗? ' addition.jsp servlet的名称> /addition.jsp 加成。jsp servlet-name> /addition url-pattern> servlet-mapping> ' –
我想问你一些问题,请问:) web.xml中的Servlet映射是否需要?因为我构建的项目和web.xml是空的,但我创建每个servlet,右键单击并添加servlet,在部署描述符包括服务器映射,我看到那里我的小服务程序,但我没有手动添加。我正在使用Eclipse IDE。 –