这是我的代码，我正在尝试使用mongodb数据库中保存的id和密码登录。我与db的连接很好，因为我尝试从db获取所有数据，但在使用安全性时，我遇到了一个错误，没有为id定义密码编码器等于null。
安全管理类

package com.casestudy.APIGateway.SecurityManager;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

import com.casestudy.APIGateway.Service.MySecurityDetailsService;

public class SecurityManager extends WebSecurityConfigurerAdapter {

    @Autowired
    MySecurityDetailsService userDetailsService;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService);
    }

    @Bean
    @SuppressWarnings("deprecation")
    public PasswordEncoder encodePasswrd() {
        return NoOpPasswordEncoder.getInstance();
    }

}

userdetailsserviceclass

package com.casestudy.APIGateway.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 java.util.Optional;

import com.casestudy.APIGateway.DAO.SecurityDatabase;
import com.casestudy.APIGateway.Model.SecurityData;

@Service
public class MySecurityDetailsService implements UserDetailsService{

    @Autowired
    SecurityDatabase userRepo;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        Optional<SecurityData> user =userRepo.findById(username);
        System.out.println(user);
        user.orElseThrow(()->new UsernameNotFoundException("User Not Found" +username));

        return user.map(MySecurityDetails::new).get();
    }

}

userdetails类

package com.casestudy.APIGateway.Service;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.stream.Collectors;

import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import com.casestudy.APIGateway.Model.SecurityData;
import com.example.database.mongodbSpringSecurity.entity.User;

public class MySecurityDetails implements UserDetails{

    private String username;
    private String password;
    private List<GrantedAuthority> authorities;

    public MySecurityDetails(SecurityData user) {
        this.username = user.get_Id();
        this.password = user.getPassword();
        this.authorities = Arrays.stream(user.getRole().split(","))
                .map(SimpleGrantedAuthority::new).collect(Collectors.toList());
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        // TODO Auto-generated method stub
        return authorities;
    }

    @Override
    public String getPassword() {
        // TODO Auto-generated method stub
        return password;
    }

    @Override
    public String getUsername() {
        // TODO Auto-generated method stub
        return username;
    }

    @Override
    public boolean isAccountNonExpired() {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        // TODO Auto-generated method stub
        return true;
    }

    @Override
    public boolean isEnabled() {
        // TODO Auto-generated method stub
        return true;
    }

}

我的实体类如下

package com.casestudy.APIGateway.Model;

        import org.springframework.data.annotation.Id;
        import org.springframework.data.mongodb.core.mapping.Document;
        import org.springframework.stereotype.Component;

        @Component
        @Document(collection = "Security")
        public class SecurityData {

            @Id
            private String _Id;
            private String Password;
            private String Role;

            public SecurityData() {
                super();
                // TODO Auto-generated constructor stub
            }

            public SecurityData(String _Id, String password, String role) {
                super();
                this._Id = _Id;
                Password = password;
                Role = role;
            }

        public String get_Id() {
            return _Id;
        }

        public void set_Id(String _Id) {
            this._Id = _Id;
        }

        public String getPassword() {
            return Password;
        }

        public void setPassword(String password) {
            Password = password;
        }

        public String getRole() {
            return Role;
        }

        public void setRole(String role) {
            Role = role;
        }

    }