javaweb退出登录功能
时间: 2023-12-16 11:05:09 浏览: 29
以下是JavaWeb退出登录功能的实现方法:
1.在servlet中处理退出登录的逻辑,包括清除session中的用户信息等操作。
```java
public class LogoutServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
HttpSession session = request.getSession();
session.removeAttribute("user");
response.sendRedirect(request.getContextPath() + "/login.jsp");
}
}
```
2.在web.xml中配置新的servlet,将其映射到/logout路径。
```xml
<servlet>
<servlet-name>logoutServlet</servlet-name>
<servlet-class>com.example.web.servlet.LogoutServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>logoutServlet</servlet-name>
<url-pattern>/logout</url-pattern>
</servlet-mapping>
```
3.在jsp页面中添加退出登录的链接,将其指向/logout路径。
```html
<a href="${pageContext.request.contextPath}/logout">退出登录</a>
```