一、自定义认证逻辑
生成验证码工具
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< dependency > < groupId >com.github.penggle</ groupId > < artifactId >kaptcha</ artifactId > < version >2.3.2</ version > </ dependency > |
添加Kaptcha配置
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@Configuration public class KaptchaConfig { @Bean Producer kaptcha() { Properties properties = new Properties(); properties.setProperty( "kaptcha.image.width" , "150" ); properties.setProperty( "kaptcha.image.height" , "50" ); properties.setProperty( "kaptcha.textproducer.char.string" , "0123456789" ); properties.setProperty( "kaptcha.textproducer.char.length" , "4" ); Config config = new Config(properties); DefaultKaptcha defaultKaptcha = new DefaultKaptcha(); defaultKaptcha.setConfig(config); return defaultKaptcha; } } |
生成验证码文本，放入HttpSession中
根据验证码文本生成图片 通过IO流写出到前端。
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@RestController public class LoginController { @Autowired Producer producer; @GetMapping ( "/vc.jpg" ) public void getVerifyCode(HttpServletResponse resp, HttpSession session) throws IOException { resp.setContentType( "image/jpeg" ); String text = producer.createText(); session.setAttribute( "kaptcha" , text); BufferedImage image = producer.createImage(text); try (ServletOutputStream out = resp.getOutputStream()) { ImageIO.write(image, "jpg" , out); } } @RequestMapping ( "/index" ) public String index() { return "login success" ; } @RequestMapping ( "/hello" ) public String hello() { return "hello spring security" ; } } |
form表单
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<!DOCTYPE html> < html lang = "en" xmlns:th = "http://www.thymeleaf.org" > < head > < meta charset = "UTF-8" > < title >登录</ title > < link href = "//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel = "external nofollow" rel = "stylesheet" id = "bootstrap-css" > < script src = "//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js" ></ script > < script src = "//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js" ></ script > </ head > < style > #login .container #login-row #login-column #login-box { border: 1px solid #9C9C9C; background-color: #EAEAEA; } </ style > < body > < div id = "login" > < div class = "container" > < div id = "login-row" class = "row justify-content-center align-items-center" > < div id = "login-column" class = "col-md-6" > < div id = "login-box" class = "col-md-12" > < form id = "login-form" class = "form" action = "/doLogin" method = "post" > < h3 class = "text-center text-info" >登录</ h3 > < div th:text = "${SPRING_SECURITY_LAST_EXCEPTION}" ></ div > < div class = "form-group" > < label for = "username" class = "text-info" >用户名:</ label >< br > < input type = "text" name = "uname" id = "username" class = "form-control" > </ div > < div class = "form-group" > < label for = "password" class = "text-info" >密码:</ label >< br > < input type = "text" name = "passwd" id = "password" class = "form-control" > </ div > < div class = "form-group" > < label for = "kaptcha" class = "text-info" >验证码:</ label >< br > < input type = "text" name = "kaptcha" id = "kaptcha" class = "form-control" > < img src = "/vc.jpg" alt = "" > </ div > < div class = "form-group" > < input type = "submit" name = "submit" class = "btn btn-info btn-md" value = "登录" > </ div > </ form > </ div > </ div > </ div > </ div > </ div > </ body > |
验证码图片地址为我们在Controller中定义的验证码接口地址。
身份认证是AuthenticationProvider的authenticate方法完成，因此验证码可以在此之前完成：
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public class KaptchaAuthenticationProvider extends DaoAuthenticationProvider {
@Override public Authentication authenticate(Authentication authentication) throws AuthenticationException { HttpServletRequest req = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest(); String kaptcha = req.getParameter( "kaptcha" ); String sessionKaptcha = (String) req.getSession().getAttribute( "kaptcha" ); if (kaptcha != null && sessionKaptcha != null && kaptcha.equalsIgnoreCase(sessionKaptcha)) { return super .authenticate(authentication); } throw new AuthenticationServiceException( "验证码输入错误" ); } } |
配置AuthenticationManager：
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@Configuration public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Bean AuthenticationProvider kaptchaAuthenticationProvider() { InMemoryUserDetailsManager users = new InMemoryUserDetailsManager(User.builder() .username( "xiepanapn" ).password( "{noop}123" ).roles( "admin" ).build()); KaptchaAuthenticationProvider provider = new KaptchaAuthenticationProvider(); provider.setUserDetailsService(users); return provider; }
@Override @Bean public AuthenticationManager authenticationManagerBean() throws Exception { ProviderManager manager = new ProviderManager(kaptchaAuthenticationProvider()); return manager; }
@Override protected void configure(HttpSecurity http) throws Exception { http.authorizeRequests() .antMatchers( "/vc.jpg" ).permitAll() .anyRequest().authenticated() .and() .formLogin() .loginPage( "/mylogin.html" ) .loginProcessingUrl( "/doLogin" ) .defaultSuccessUrl( "/index.html" ) .failureForwardUrl( "/mylogin.html" ) .usernameParameter( "uname" ) .passwordParameter( "passwd" ) .permitAll() .and() .csrf().disable(); } } |
配置UserDetailsService提供的数据源 提供AuthenticationProvider实例并配置UserDetailsService 重写authenticationManagerBean方法提供一个自己的ProviderManager并自定义AuthenticationManager实例。
二、自定义过滤器
LoginFilter继承UsernamePasswordAuthenticationFilter 重写attemptAuthentication方法：
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public class LoginFilter extends UsernamePasswordAuthenticationFilter {
@Override public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException { if (!request.getMethod().equals( "POST" )) { throw new AuthenticationServiceException( "Authentication method not supported: " + request.getMethod()); } String kaptcha = request.getParameter( "kaptcha" ); String sessionKaptcha = (String) request.getSession().getAttribute( "kaptcha" ); if (!StringUtils.isEmpty(kaptcha) && !StringUtils.isEmpty(sessionKaptcha) && kaptcha.equalsIgnoreCase(sessionKaptcha)) { return super .attemptAuthentication(request, response); } throw new AuthenticationServiceException( "验证码输入错误" ); } } |
在SecurityConfig中配置LoginFilter
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@Configuration public class SecurityConfig extends WebSecurityConfigurerAdapter { @Override protected void configure(AuthenticationManagerBuilder auth) throws Exception { auth.inMemoryAuthentication() .withUser( "javaboy" ) .password( "{noop}123" ) .roles( "admin" ); }
@Override @Bean public AuthenticationManager authenticationManagerBean() throws Exception { return super .authenticationManagerBean(); }
@Bean LoginFilter loginFilter() throws Exception { LoginFilter loginFilter = new LoginFilter(); loginFilter.setFilterProcessesUrl( "/doLogin" ); loginFilter.setAuthenticationManager(authenticationManagerBean()); loginFilter.setAuthenticationSuccessHandler( new SimpleUrlAuthenticationSuccessHandler( "/hello" )); loginFilter.setAuthenticationFailureHandler( new SimpleUrlAuthenticationFailureHandler( "/mylogin.html" )); return loginFilter; }
@Override protected void configure(HttpSecurity http) throws Exception { http.authorizeRequests() .antMatchers( "/vc.jpg" ).permitAll() .anyRequest().authenticated() .and() .formLogin() .loginPage( "/mylogin.html" ) .permitAll() .and() .csrf().disable(); http.addFilterAt(loginFilter(), UsernamePasswordAuthenticationFilter. class ); } } |
显然第二种比较简单
总结
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