使用jsp和servlet实现分角色登录不同页面,完整代码
时间: 2024-03-10 09:44:18 浏览: 23
下面是一个完整的使用 JSP 和 Servlet 实现分角色登录不同页面的示例代码:
login.jsp:
```html
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Login</title>
</head>
<body>
<h1>Login</h1>
<form method="post" action="LoginServlet">
<label for="username">Username:</label>
<input type="text" id="username" name="username"><br>
<label for="password">Password:</label>
<input type="password" id="password" name="password"><br>
<label for="role">Role:</label>
<select id="role" name="role">
<option value="admin">Admin</option>
<option value="user">User</option>
</select><br>
<input type="submit" value="Login">
</form>
</body>
</html>
```
LoginServlet.java:
```java
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String username = request.getParameter("username");
String password = request.getParameter("password");
String role = request.getParameter("role");
// TODO: 用户验证
// 根据角色跳转到不同的页面
if ("admin".equals(role)) {
request.getRequestDispatcher("/admin.jsp").forward(request, response);
} else if ("user".equals(role)) {
request.getRequestDispatcher("/user.jsp").forward(request, response);
}
}
}
```
admin.jsp:
```html
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Admin Page</title>
</head>
<body>
<h1>Welcome admin!</h1>
<!-- TODO: 显示管理员页面内容 -->
</body>
</html>
```
user.jsp:
```html
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>User Page</title>
</head>
<body>
<h1>Welcome user!</h1>
<!-- TODO: 显示普通用户页面内容 -->
</body>
</html>
```
需要注意的是,上面的代码只是一个简单的示例,实际应用中需要进行更完善的用户验证和角色管理。另外,如果使用 Maven 管理项目,可以使用以下依赖:
```xml
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>4.0.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
```
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