UserController.java类
如果我删除“ required = false”，错误仍然相同。
@RequestMapping(value= "/login", method = RequestMethod.POST)
public String login(@RequestParam(value= "email", required = false) String email, @RequestParam(value= "password", required = false) String password, ModelMap modelmap) {
User user = userrepository.getEmailById(email);
if(user.getPassword().equals(password))
return "findFlights";
}
UserRepository.java类
public interface UserRepository extends JpaRepository<User, Long> {
User getEmailById(String email);
}
login.jsp
<form action="login" method="post">
<pre>
Email: <input type="text" name="email"/>
Password: <input type="password" name="password"/>
<input type="submit" value="login">
${msg}
</pre>
</form>
最佳答案
问题似乎与您的控制器实现无关。 UserRepository实现似乎引发了异常，您的数据库调用期望该异常很长，但是您正在发送字符串。