自定义用户认证逻辑
处理用户信息获取逻辑
实现UserDetailsService接口
@Service public class MyUserDetailsService implements UserDetailsService { private Logger logger = LoggerFactory.getLogger(getClass()); @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { logger.info("根据用户名查找用户信息，登录用户名：" + username); // 从数据库查询相关的密码和权限，这里返回一个假的数据 // 用户名,密码,权限 return new User(username, "123456", AuthorityUtils.commaSeparatedStringToAuthorityList("admin")); } } 处理用户校验逻辑
UserDetails接口的一些方法，封装了登录时的一些信息
public interface UserDetails extends Serializable { /** 权限信息 * Returns the authorities granted to the user. Cannot return <code>null</code>. * * @return the authorities, sorted by natural key (never <code>null</code>) */ Collection<? extends GrantedAuthority> getAuthorities(); /** 密码 * Returns the password used to authenticate the user. * * @return the password */ String getPassword(); /** 登录名 * Returns the username used to authenticate the user. Cannot return <code>null</code> * . * * @return the username (never <code>null</code>) */ String getUsername(); /** 账户是否过期 * Indicates whether the user's account has expired. An expired account cannot be * authenticated. * * @return <code>true</code> if the user's account is valid (ie non-expired), * <code>false</code> if no longer valid (ie expired) */ boolean isAccountNonExpired(); /** 账户是否被锁定(冻结) * Indicates whether the user is locked or unlocked. A locked user cannot be * authenticated. * * @return <code>true</code> if the user is not locked, <code>false</code> otherwise */ boolean isAccountNonLocked(); /** 密码是否过期 * Indicates whether the user's credentials (password) has expired. Expired * credentials prevent authentication. * * @return <code>true</code> if the user's credentials are valid (ie non-expired), * <code>false</code> if no longer valid (ie expired) */ boolean isCredentialsNonExpired(); /** 账户是否可用(删除) * Indicates whether the user is enabled or disabled. A disabled user cannot be * authenticated. * * @return <code>true</code> if the user is enabled, <code>false</code> otherwise */ boolean isEnabled(); } 返回数据写成
return new User(username, // 用户名 "123456", // 密码 true, // 是否可用 true, // 账号是否过期 true, // 密码是否过期 true, // 账号没有被锁定标志 AuthorityUtils.commaSeparatedStringToAuthorityList("admin")); 处理密码加密解密
PasswordEncoder接口
public interface PasswordEncoder { /** 加密 * Encode the raw password. Generally, a good encoding algorithm applies a SHA-1 or * greater hash combined with an 8-byte or greater randomly generated salt. */ String encode(CharSequence rawPassword); /** 判断密码是否匹配 * Verify the encoded password obtained from storage matches the submitted raw * password after it too is encoded. Returns true if the passwords match, false if * they do not. The stored password itself is never decoded. * * @param rawPassword the raw password to encode and match * @param encodedPassword the encoded password from storage to compare with * @return true if the raw password, after encoding, matches the encoded password from * storage */ boolean matches(CharSequence rawPassword, String encodedPassword); } 在BrowerSecurityConfig中配置PasswordEncoder
// 配置PasswordEncoder @Bean public PasswordEncoder passwordEncoder() { return new BCryptPasswordEncoder(); } MyUserDetailsService.java改成
// 注入passwordEncoder @Autowired private PasswordEncoder passwordEncoder; // 返回写成这样 return new User(username, // 用户名 passwordEncoder.encode("123456"), // 这个是从数据库中读取的已加密的密码 true, // 是否可用 true, // 账号是否过期 true, // 密码是否过期 true, // 账号没有被锁定标志 AuthorityUtils.commaSeparatedStringToAuthorityList("admin")); 个性化用户认证流程
自定义登录页面
修改BrowserSecurityConfig类
@Configuration public class BrowserSecurityConfig extends WebSecurityConfigurerAdapter { // 配置PasswordEncoder @Bean public PasswordEncoder passwordEncoder() { return new BCryptPasswordEncoder(); } @Override protected void configure(HttpSecurity http) throws Exception { System.out.println("BrowserSecurityConfig"); http.formLogin() // 表单登录 .loginPage("/sign.html") // 自定义登录页面URL .loginProcessingUrl("/authentication/form") // 处理登录请求的URL .and() .authorizeRequests() // 对请求做授权 .antMatchers("/sign.html").permitAll() // 登录页面不需要认证 .anyRequest() // 任何请求 .authenticated() // 都需要身份认证 .and().csrf().disable(); // 暂时将防护跨站请求伪造的功能置为不可用 } } 问题
- 不同的登录方式,通过页面登录,通过app登录
- 给多个应用提供认证服务,每个应用需要的自定义登录页面
@Configuration public class BrowserSecurityConfig extends WebSecurityConfigurerAdapter { @Autowired private SecurityProperties securityProperties; // 配置PasswordEncoder @Bean public PasswordEncoder passwordEncoder() { return new BCryptPasswordEncoder(); } @Override protected void configure(HttpSecurity http) throws Exception { System.out.println("BrowserSecurityConfig"); http.formLogin() // 表单登录 .loginPage("/authentication/require") // 自定义登录页面URL .loginProcessingUrl("/authentication/form") // 处理登录请求的URL .and() .authorizeRequests() // 对请求做授权 .antMatchers("/authentication/require", securityProperties.getBrowser().getLoginPage()) .permitAll() // 登录页面不需要认证 .anyRequest() // 任何请求 .authenticated() // 都需要身份认证 .and().csrf().disable(); // 暂时将防护跨站请求伪造的功能置为不可用 } } BrowserSecurityController判断访问的url如果以.html结尾就跳转到登录页面,否则就返回json格式的提示信息
@RestController public class BrowserSecurityController { private Logger logger = LoggerFactory.getLogger(getClass()); private RequestCache requestCache = new HttpSessionRequestCache(); private RedirectStrategy redirectStrategy = new DefaultRedirectStrategy(); @Autowired private SecurityProperties securityProperties; /** * 需要身份认证时,跳转到这里 * * @param request * @param response * @return */ @RequestMapping("/authentication/require") @ResponseStatus(code = HttpStatus.UNAUTHORIZED) public SimpleResponse requireAuthentication(HttpServletRequest request, HttpServletResponse response) throws IOException { SavedRequest savedRequest = requestCache.getRequest(request, response); if (savedRequest != null) { String targetUrl = savedRequest.getRedirectUrl(); logger.info("引发跳转请求的url是:" + targetUrl); if (StringUtils.endsWithIgnoreCase(targetUrl, ".html")) { redirectStrategy.sendRedirect(request, response, securityProperties.getBrowser().getLoginPage()); } } return new SimpleResponse("访问的服务需要身份认证,请引导用户到登录页"); } } 自定义登录成功处理
AuthenticationSuccessHandler接口,此接口登录成功后会被调用
@Component public class ImoocAuthenticationSuccessHandler implements AuthenticationSuccessHandler { private Logger logger = LoggerFactory.getLogger(ImoocAuthenticationSuccessHandler.class); @Autowired private ObjectMapper objectMapper; @Override public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException { logger.info("登录成功"); // 登录成功后把authentication返回给前台 response.setContentType("application/json;charset=UTF-8"); response.getWriter().write(objectMapper.writeValueAsString(authentication)); } } 
自定义登录失败处理
@Component public class ImoocAuthenticationFailHandler implements AuthenticationFailureHandler { private Logger logger = LoggerFactory.getLogger(getClass()); @Autowired private ObjectMapper objectMapper; @Override public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException e) throws IOException, ServletException { logger.info("登录失败"); response.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value()); response.setContentType("application/json;charset=UTF-8"); response.getWriter().write(objectMapper.writeValueAsString(e)); } } 
问题
- 登录成功或失败后返回页面还是json数据格式
登录成功后的处理
@Component public class ImoocAuthenticationSuccessHandler extends SavedRequestAwareAuthenticationSuccessHandler { private Logger logger = LoggerFactory.getLogger(ImoocAuthenticationSuccessHandler.class); @Autowired private ObjectMapper objectMapper; @Autowired private SecurityProperties securityProperties; @Override public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException { logger.info("登录成功"); if (LoginType.JSON.equals(securityProperties.getBrowser().getLoginType())) { // 登录成功后把authentication返回给前台 response.setContentType("application/json;charset=UTF-8"); response.getWriter().write(objectMapper.writeValueAsString(authentication)); } else { super.onAuthenticationSuccess(request, response, authentication); } } } 登录失败后的处理
@Component public class ImoocAuthenticationFailHandler extends SimpleUrlAuthenticationFailureHandler { private Logger logger = LoggerFactory.getLogger(getClass()); @Autowired private ObjectMapper objectMapper; @Autowired private SecurityProperties securityProperties; @Override public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException e) throws IOException, ServletException { logger.info("登录失败"); if (LoginType.JSON.equals(securityProperties.getBrowser().getLoginType())) { response.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value()); response.setContentType("application/json;charset=UTF-8"); response.getWriter().write(objectMapper.writeValueAsString(e)); } else { super.onAuthenticationFailure(request, response, e); } } } 认证流程源码级详解
认证处理流程说明
认证结果如何在多个请求之间共享
一个请求进来的时候,先检查context是否存有该请求的认证信息
获取认证用户信息
图片验证码
生成图片验证码
- 根据随机数生成图片
- 将随机数存到Session中
- 在将生成的图片写到接口的响应中
图片验证码重构
验证码基本参数可配置
验证码图片的宽，高，字符数，失效时间可配置(注意字符数和失效时间不要在请求级配置中)。请求级配置就是在请求验证码时/code/image?width=100&height=30，应用级配置就是在应用的配置文件中
// 在使用这些配置时,如果请求级配置有就用请求级配置,否则就依次用应用级配置,默认配置 int width = ServletRequestUtils.getIntParameter(request.getRequest(), "width", securityProperties.getCode().getImage().getWidth()); int height = ServletRequestUtils.getIntParameter(request.getRequest(), "height", securityProperties.getCode().getImage().getHeight()); 验证码拦截的接口可配置
默认情况下,只有在注册,登录的需要验证码的时候才拦截的,如果还有其他情景下需要则能够在不修改依赖的情况下可配置.如何实现呢,在配置文件中添加要需要验证码的url,验证码的验证是通过过滤器实现的,那么在对其过滤的时候判断当前url是否是需要拦截即可
验证码的生成逻辑可配置
把生成验证码的功能定义成接口,框架给出一个默认的实现,如果应用不定义就用这个默认实现,如果应用要定制一个,就实现这个接口就可以了.
// 框架中的默认实现不加注释@Component进行初始化,用如下方式对其进行初始化 // 检测上下文环境中是否有imageCodeGenerator这个bean,如果没有就初始化框架中提供的默认实现 @Configuration public class ValidateCodeBeanConfig { @Autowired private SecurityProperties securityProperties; @Bean @ConditionalOnMissingBean(name = "imageCodeGenerator") public ValidateCodeGenerator imageCodeGenerator() { System.out.println("init imageCodeGenerator"); ImageCodeGenerator codeGenerator = new ImageCodeGenerator(); codeGenerator.setSecurityProperties(securityProperties); return codeGenerator; } } 添加记住我功能
基本原理
具体实现
@Configuration public class BrowserSecurityConfig extends WebSecurityConfigurerAdapter { // 用来读取配置 @Autowired private SecurityProperties securityProperties; // 登录成功后的处理 @Autowired private ImoocAuthenticationSuccessHandler imoocAuthenticationSuccessHandler; // 登录失败后的处理 @Autowired private ImoocAuthenticationFailHandler imoocAuthenticationFailHandler; @Autowired private DataSource dataSource; @Autowired private UserDetailsService userDetailsService; // 配置PasswordEncoder @Bean public PasswordEncoder passwordEncoder() { return new BCryptPasswordEncoder(); } // 用于remember me @Bean public PersistentTokenRepository persistentTokenRepository() { JdbcTokenRepositoryImpl tokenRepository = new JdbcTokenRepositoryImpl(); tokenRepository.setDataSource(dataSource); // tokenRepository.setCreateTableOnStartup(true); // 启动时创建表 return tokenRepository; } @Override protected void configure(HttpSecurity http) throws Exception { System.out.println("BrowserSecurityConfig"); ValidateCodeFilter validateCodeFilter = new ValidateCodeFilter(); validateCodeFilter.setAuthenticationFailureHandler(imoocAuthenticationFailHandler); validateCodeFilter.setSecurityProperties(securityProperties); validateCodeFilter.afterPropertiesSet(); http.addFilterBefore(validateCodeFilter, UsernamePasswordAuthenticationFilter.class) .formLogin() // 表单登录 .loginPage("/authentication/require") // 自定义登录页面URL .loginProcessingUrl("/authentication/form") // 处理登录请求的URL .successHandler(imoocAuthenticationSuccessHandler) // 登录成功后的处理 .failureHandler(imoocAuthenticationFailHandler) // 登录失败后的处理 .and() .rememberMe() .tokenRepository(persistentTokenRepository()) .tokenValiditySeconds(securityProperties.getBrowser().getRememberMeSeconds()) .userDetailsService(userDetailsService) .and() .authorizeRequests() // 对请求做授权 .antMatchers("/authentication/require", securityProperties.getBrowser().getLoginPage(), "/code/image") .permitAll() // 登录页面不需要认证 .anyRequest() // 任何请求 .authenticated() // 都需要身份认证 .and().csrf().disable(); // 暂时将防护跨站请求伪造的功能置为不可用 } } 源码解析
略
来源：oschina
链接：https://my.oschina.net/u/159293/blog/2243289