我正在使用 Spring Security 来登录和注销,一切正常。
我可以从登录的用户那里获取用户名,但是我需要 userID,
我想知道如何从登录用户中获取用户作为对象,或者如何获取用户ID
@RequestMapping("/contato")
public String contato(Model model, Principal principal ){
String userName = principal.getName();
model.addAttribute("userName",userName);
System.out.println(userName);
return "contato";
}
bean
import java.sql.Date;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;
import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.NotBlank;
public class Users {
private int user_id;
@NotBlank
@Size(min=1, max=100, message="Name must be between 1 and 100 characters")
private String firstname;
@NotBlank
private String surname;
@NotNull
private Date dob;
@NotBlank
@Email
private String username;
@NotBlank
private String telephone;
@NotBlank
private String address;
@NotBlank
private String city;
@NotBlank
private String country;
@NotBlank
private String postcode;
@NotBlank
@Size(min=6, message="Password must be have more than 6 characters")
private String password;
private boolean enabled = false;
private String authority;
public Users() {
}
public Users(int user_id, String firstname, String surname, Date dob, String username, String telephone,
String address, String city, String country, String postcode, String password, boolean enabled,
String authority) {
super();
this.user_id = user_id;
this.firstname = firstname;
this.surname = surname;
this.dob = dob;
this.username = username;
this.telephone = telephone;
this.address = address;
this.city = city;
this.country = country;
this.postcode = postcode;
this.password = password;
this.enabled = enabled;
this.authority = authority;
}
public int getUser_id() {
return user_id;
}
public void setUser_id(int user_id) {
this.user_id = user_id;
}
public String getFirstname() {
return firstname;
}
public void setFirstname(String firstname) {
this.firstname = firstname;
}
public String getSurname() {
return surname;
}
public void setSurname(String surname) {
this.surname = surname;
}
public Date getDob() {
return dob;
}
public void setDob(Date dob) {
this.dob = dob;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String getPostcode() {
return postcode;
}
public void setPostcode(String postcode) {
this.postcode = postcode;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public boolean isEnabled() {
return enabled;
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
public String getAuthority() {
return authority;
}
public void setAuthority(String authority) {
this.authority = authority;
}
}
任何人都可以帮我从登录用户那里获取用户 ID
我也尝试过使用
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
Users user =(Users)authentication.getPrincipal();
但是还是不行
最佳答案
最简单的方法是利用 UserDetails
和 UserDetailsService
接口(interface)。
编写一个简单的 UserDetailsService:
@Service
public class CustomUserDetailsService implements UserDetailsService {
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
return findUserByUsername(username); //load the user from somewhere (e.g. Database)
}
}
让您的 Users
类实现 UserDetails
接口(interface):
public class Users implements UserDetails {
private String username;
private String userId;
private String password;
private String role;
public Users(String username, String userId, String password, String role) {
this.username = username;
this.userId = userId;
this.password = password;
this.role = role;
}
//...
}
最后,当您调用此静态方法时,您将收到 Users
对象,您可以从中提取 userId:
Users user = (Users) SecurityContextHolder.getContext().getAuthentication().getPrincipal();
关于java - Spring mvc从登录用户获取用户id,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45461091/