一、Spring Security实现多次登录失败后账户锁定功能的实现过程
- 配置登录失败处理器
在Spring Security的配置类中,通过实现 org.springframework.security.web.authentication.AuthenticationFailureHandler
接口,自定义一个登录失败处理器。
示例代码:
@Configuration
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private MyUserDetailsService myUserDetailsService;
@Autowired
private PasswordEncoder passwordEncoder;
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(myUserDetailsService)
.passwordEncoder(passwordEncoder);
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http.formLogin()
.loginPage("/login").permitAll()
.loginProcessingUrl("/login")
.failureHandler(authenticationFailureHandler())
.and()
// ...
}
/**
* 自定义登录失败处理器
*/
@Bean
public MyAuthenticationFailureHandler authenticationFailureHandler() {
return new MyAuthenticationFailureHandler();
}
}
- 编写登录失败处理器
实现 onAuthenticationFailure
方法,获取登录账户名,查询数据库中的账户信息并更新账户状态。
示例代码:
public class MyAuthenticationFailureHandler implements AuthenticationFailureHandler {
@Autowired
private AccountDao accountDao;
@Override
public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {
String username = request.getParameter("username");
Account account = accountDao.findByUsername(username);
if (account != null) { // 查询到用户时更新账户状态
account.setFailedAttempts(account.getFailedAttempts() + 1);
// 超过登录失败次数,锁定账户
if (account.getFailedAttempts() >= MAX_FAILED_ATTEMPTS) {
account.setLocked(true);
account.setLockedAt(new Date());
}
accountDao.save(account);
}
// 跳转到登录页面,显示错误信息
response.sendRedirect("/login?error=true");
}
}
- 完善登录逻辑
修改登录逻辑,在登录成功时清空账户状态中的失败次数和锁定状态等信息。
示例代码:
public class MyAuthenticationSuccessHandler implements AuthenticationSuccessHandler {
@Autowired
private AccountDao accountDao;
@Override
public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
String username = authentication.getName();
Account account = accountDao.findByUsername(username);
if (account != null) { // 查询到用户时更新账户状态
account.setFailedAttempts(0);
account.setLocked(false);
account.setLockedAt(null);
accountDao.save(account);
}
// 跳转到首页
response.sendRedirect("/");
}
}
二、示例
以下是两个示例:
- 锁定状态下的登录
账户登录失败多次后,账户被锁定了。现在用户想要登录,但是因为账户被锁定了,无法进行登录。
用户看到的界面应该是这样的:
Account is locked. Please try again later.
- 登录失败但未被锁定的账户
账户仍然不能登录,但账户状态并未进入锁定状态。
此时,用户会看到错误信息:
Incorrect username or password.
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