SpringsecurityUserdetails無法轉換為我自己的用戶實作

我有一個User實作 spring security 的類UserDetails。然而，在登錄請求的認證程序中，它給出了一個ClassCastException是UserDetails不能轉換到我的User班。

完整的錯誤：

java.lang.ClassCastException：類 org.springframework.security.core.userdetails.User 不能被轉換為類 nl.teamrepositories.vliegmaatschappij.security.domain.User（org.springframework.security.core.userdetails.User 在未命名的模塊中加載器“應用程式”的；nl.teamrepositories.vliegmaatschappij.security.domain.User 在加載器 org.springframework.boot.devtools.restart.classloader.RestartClassLoader @6ef8cb6 的未命名模塊中）

用戶：

package nl.teamrepositories.vliegmaatschappij.security.domain;

import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;

import javax.persistence.*;
import java.util.Collection;
import java.util.List;

@Entity
@Table(name = "users")
@Getter @Setter @NoArgsConstructor
public class User implements UserDetails {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    @Column(nullable = false, unique = true)
    private String firstName;
    private String lastName;
    private String username;
    private String password;

    private boolean enabled;
    private boolean tokenExpired;

    public User(String firstName, String lastName, String username, String password) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.username = username;
        this.password = password;
    }

    @ManyToMany
    @JoinTable(
            name = "users_roles",
            joinColumns = @JoinColumn(
                    name = "user_id", referencedColumnName = "id"),
            inverseJoinColumns = @JoinColumn(
                    name = "role_id", referencedColumnName = "id"))
    private Collection<Role> roles;

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return List.of(new SimpleGrantedAuthority("ROLE_USER"));
    }

    @Override
    public String getUsername() {
        return username;
    }

    @Override
    public boolean isAccountNonExpired() {
        return true;
    }

    @Override
    public boolean isAccountNonLocked() {
        return true;
    }

    @Override
    public boolean isCredentialsNonExpired() {
        return true;
    }
    
    @Override
    public boolean isEnabled() {
        return true;
    }
}

在 JwtAuthenticationFilter 中：

@Override
protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response,
                                        FilterChain filterChain, Authentication authentication) {
    User user = (User) authentication.getPrincipal(); // this is where the error occurs
    // more code
}

我不明白為什么我的User班級不能被強制轉換UserDetails為 Spring 班級。

我應該改變什么？

提前致謝。

uj5u.com熱心網友回復：

在JwtAuthenticationFilter. 我猜你正在使用import org.springframework.security.core.userdetails.User而不是你自己的類import nl.teamrepositories.vliegmaatschappij.security.domain.User：

import nl.teamrepositories.vliegmaatschappij.security.domain.User;
(...)

public class JwtAuthenticationFilter {
    (...)

    @Override
    protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response,
                                            FilterChain filterChain, Authentication authentication) {
        User user = (User) authentication.getPrincipal(); // this is where the error occurs
        // more code
    }
}

無論是在這里還是在代碼中的其他地方，您都使用了錯誤的User類（Spring 類而不是您的類）。

標籤：爪哇 春天 验证 弹簧安全 jwt

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