Spring security 错误的凭据Spring安全应用程序

当我使用SpringSecurity和acces时，我是SpringSecurity的新手 我的sql数据库中的用户名和密码，按signin时 按钮我得到了错误的登录凭证 我不知道发生了什么错误 我试图访问数据库中的数据 ApplicationConfig.java

MyUserDetailsService.java

用户定位

LoginController.java

package com.example.CrudDemo.configuration;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Configurable;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;

@Configurable
@EnableWebSecurity
public class AppSecuringConfig extends WebSecurityConfigurerAdapter{
    @Autowired
    private UserDetailsService userDetailsService;
    @Bean
    public AuthenticationProvider authProvider(){
        DaoAuthenticationProvider provider= new DaoAuthenticationProvider();
        provider.setUserDetailsService(userDetailsService);
        provider.setPasswordEncoder(NoOpPasswordEncoder.getInstance());
        return provider;
        
    }}

package com.example.CrudDemo.service;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

import com.example.CrudDemo.Entity.User;
import com.example.CrudDemo.princple.UserPrincple;
import com.example.CrudDemo.repository.UserRepository;

@Service
public class MyUserDetailsService implements UserDetailsService {
    @Autowired
    private UserRepository userRepo;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        // TODO Auto-generated method stub
        User user = userRepo.findByUsername(username);
        if (user== null) 
            throw new UsernameNotFoundException("You are not a User");
        
        return new UserPrincple(user);
    }

}

package com.example.CrudDemo.repository;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

import com.example.CrudDemo.Entity.User;


public interface UserRepository extends JpaRepository<User, Long> {
    User findByUsername(String username);

}

package com.example.CrudDemo.Entity;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import javax.validation.constraints.NotBlank;

import lombok.Data;
@Entity
@Table(name="stuuser")
@Data
public class User {
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Long id;
    @Column(name="username",unique=true)
    @NotBlank(message="UserName mandatory")
    private String username;
    @Column(name="password")
    @NotBlank(message="pass word mandatory")
    private String password;
    
    public User(){}

}

package com.example.CrudDemo.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class LoginContreoller {
    @RequestMapping("/")
    public String list(){
        
        return "index.html";
    }

}