我想从“登录管理”重定向到“管理仪表板”。但我无法重定向管理仪表板。我检查了所有数据库、配置 mvc 等，但我还没有找到问题出在哪里。我还问了 chatgpt 1000 次。
这是百里香代码
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org" lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Admin Login</title>
</head>
<body>
<h2>Admin Login</h2>
<form th:action="@{/login-admin}" method="post">
<label for="username">Username:</label>
<input type="text" id="username" name="username" required><br><br>
<label for="password">Password:</label>
<input type="password" id="password" name="password" required><br><br>
<button type="submit">Login</button>
</form>
<div th:if="${param.error}" style="color: red;">
<p>Invalid username or password. Please try again.</p>
</div>
</body>
</html>
这是控制器。
@PostMapping("/login-admin")
public String loginAdmin(@RequestParam("username") String username,
@RequestParam("password") String password,
Model model) {
if (username.isEmpty() || password.isEmpty()) {
model.addAttribute("error", "username and password cannot empty.");
return "login-admin"; // Error handling for empty inputs
}
Admin admin = adminRepository.findByUsername(username);
if (admin == null || !passwordEncoder.matches(password, admin.getPassword())) {
model.addAttribute("error", "password or username wrong.");
return "login-admin"; // Incorrect login
}
// Successful login
return "redirect:/admin-dashboard"; // Redirect to admin dashboard
}
你能解决这个问题吗
通过返回纯字符串进行重定向仅适用于
@Controller@RestControllerRedirectView@PostMapping("/login-admin")
public ModelAndView loginAdmin(..., Model model)
{
if (condition1) {
model.addAttribute(...);
return new ModelAndView("login-admin", model);
} else {
return new ModelAndView(new RedirectView("/login-admin"));
)
}