郑州做网站建设成人电脑速成培训班
本节内容：实现登录拦截器，除了登录接口之外所有接口访问都要携带Token，并且对Token合法性进行验证，实现登录状态的保持。
核心内容：
1、要实现登录拦截器，从Request请求中获取token，从缓存中获取Token并验证登录是否过期，若验证通过则放行；
2、实现对拦截器配置，SpringBoot 安全模块使用HttpSecurity 来完成请求安全管理。通过该对象可配置不进行鉴权的url(如登录、注册这些接口)，配置自定义的登录拦截器，配置安全认证失败的公共处理类、配置退出登录请求执行完的后续处理类、配置CORS过滤器等。
1、鉴权拦截器
JwtAuthenticationTokenFilter.java
@Component
public class JwtAuthenticationTokenFilter extends OncePerRequestFilter {@Autowiredprivate TokenService tokenService;@Overrideprotected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain)throws ServletException, IOException {//从缓存中获取用户信息LoginUser loginUser = tokenService.getLoginUser(request);if (StringUtils.isNotNull(loginUser) && StringUtils.isNull(SecurityContextHolder.getContext().getAuthentication())) {// 该方法用来刷新token有效期tokenService.verifyToken(loginUser);UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(loginUser, null, loginUser.getAuthorities());authenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));//设置到线程变量中SecurityContextHolder.getContext().setAuthentication(authenticationToken);}chain.doFilter(request, response);}
}2、SecurityConfig配置
与上一节的内容差不多，只是对HttpSecurity进行更详细的配置，
/*** spring security配置** @author */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {/*** 自定义用户认证逻辑*/@Autowiredprivate UserDetailsService userDetailsService;/*** 认证失败处理类*/@Autowiredprivate AuthenticationEntryPointImpl unauthorizedHandler;/*** 退出处理类*/@Autowiredprivate LogoutSuccessHandlerImpl logoutSuccessHandler;/*** token认证过滤器*/@Autowiredprivate JwtAuthenticationTokenFilter authenticationTokenFilter;/*** 跨域过滤器*/@Autowiredprivate CorsFilter corsFilter;/*** 允许匿名访问的地址*/@Autowiredprivate PermitAllUrlProperties permitAllUrl;/*** 解决 无法直接注入 AuthenticationManager** @return* @throws Exception*/@Bean@Overridepublic AuthenticationManager authenticationManagerBean() throws Exception {return super.authenticationManagerBean();}/*** anyRequest | 匹配所有请求路径* access | SpringEl表达式结果为true时可以访问* anonymous | 匿名可以访问* denyAll | 用户不能访问* fullyAuthenticated | 用户完全认证可以访问（非remember-me下自动登录）* hasAnyAuthority | 如果有参数，参数表示权限，则其中任何一个权限可以访问* hasAnyRole | 如果有参数，参数表示角色，则其中任何一个角色可以访问* hasAuthority | 如果有参数，参数表示权限，则其权限可以访问* hasIpAddress | 如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问* hasRole | 如果有参数，参数表示角色，则其角色可以访问* permitAll | 用户可以任意访问* rememberMe | 允许通过remember-me登录的用户访问* authenticated | 用户登录后可访问*/@Overrideprotected void configure(HttpSecurity httpSecurity) throws Exception {// 注解标记允许匿名访问的urlExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry registry = httpSecurity.authorizeRequests();permitAllUrl.getUrls().forEach(url -> registry.antMatchers(url).permitAll());httpSecurity// CSRF禁用，因为不使用session.csrf().disable()// 禁用HTTP响应标头.headers().cacheControl().disable().and()// 认证失败处理类.exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()// 基于token，所以不需要session.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()// 过滤请求.authorizeRequests()// 对于登录login 注册register 验证码captchaImage 允许匿名访问.antMatchers("/swagger-ui.html","/login", "/register", "/captchaImage").permitAll()// 静态资源，可匿名访问.antMatchers(HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js", "/**/attachment/**", "/profile/**").permitAll().antMatchers("/swagger-ui.html" ,"/v2/api-docs","/swagger-resources", "/swagger-resources/**", "/webjars/**", "/*/api-docs", "/druid/**").permitAll()// 除上面外的所有请求全部需要鉴权认证.anyRequest().authenticated().and().headers().frameOptions().disable();// 添加Logout filterhttpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);// 添加JWT filterhttpSecurity.addFilterBefore(authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);// 添加CORS filterhttpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);}/*** 强散列哈希加密实现*/@Beanpublic BCryptPasswordEncoder bCryptPasswordEncoder() {return new BCryptPasswordEncoder();}/*** 身份认证接口*/@Overrideprotected void configure(AuthenticationManagerBuilder auth) throws Exception {auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());}
}
添加TokenService
根据登录用户信息，创建token，并实现对token的管理，token缓存、清理、过期处理等；
package com.luo.chengrui.labs.lab04.service;import com.luo.chengrui.labs.lab04.model.LoginUser;
import com.luo.chengrui.labs.lab04.utils.IpUtils;
import com.luo.chengrui.labs.lab04.utils.ServletUtils;
import com.luo.chengrui.labs.lab04.utils.StringUtils;
import com.luo.chengrui.labs.lab04.utils.UUID;
import eu.bitwalker.useragentutils.UserAgent;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;import javax.servlet.http.HttpServletRequest;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;/*** token验证处理** @author ruoyi*/
@Service
public class TokenService {// 令牌自定义标识@Value("${token.header}")private String header;// 令牌秘钥@Value("${token.secret}")private String secret;// 令牌有效期（默认30分钟）@Value("${token.expireTime}")private int expireTime;protected static final String LOGIN_USER_KEY = "LOGIN_USER_KEY";public static final String TOKEN_PREFIX = "Bearer ";/*** 登录用户*/public static final String LOGIN_TOKEN_KEY = "login_tokens:";protected static final long MILLIS_SECOND = 1000;protected static final long MILLIS_MINUTE = 60 * MILLIS_SECOND;private static final Long MILLIS_MINUTE_TEN = 20 * 60 * 1000L;private static final Map<String,LoginUser> tokenCache = new HashMap<>();public String getHeader() {return header;}/*** 获取用户身份信息** @return 用户信息*/public LoginUser getLoginUser(HttpServletRequest request) {// 获取请求携带的令牌String token = getToken(request);if (StringUtils.isNotEmpty(token)) {try {Claims claims = parseToken(token);// 解析对应的权限以及用户信息String uuid = (String) claims.get(LOGIN_USER_KEY);String userKey = getTokenKey(uuid);LoginUser user = tokenCache.get(userKey);return user;} catch (Exception e) {}}return null;}/*** 设置用户身份信息*/public void setLoginUser(LoginUser loginUser) {if (StringUtils.isNotNull(loginUser) && StringUtils.isNotEmpty(loginUser.getToken())) {refreshToken(loginUser);}}/*** 删除用户身份信息*/public void delLoginUser(String token) {if (StringUtils.isNotEmpty(token)) {String userKey = getTokenKey(token);tokenCache.remove(userKey);}}/*** 创建令牌** @param loginUser 用户信息* @return 令牌*/public String createToken(LoginUser loginUser) {String token = UUID.fastUUID().toString();loginUser.setToken(token);setUserAgent(loginUser);refreshToken(loginUser);Map<String, Object> claims = new HashMap<>();claims.put(LOGIN_USER_KEY, token);return createToken(claims);}/*** 验证令牌有效期，相差不足20分钟，自动刷新缓存** @param loginUser* @return 令牌*/public void verifyToken(LoginUser loginUser) {long expireTime = loginUser.getExpireTime();long currentTime = System.currentTimeMillis();if (expireTime - currentTime <= MILLIS_MINUTE_TEN) {refreshToken(loginUser);}}/*** 刷新令牌有效期** @param loginUser 登录信息*/public void refreshToken(LoginUser loginUser) {loginUser.setLoginTime(System.currentTimeMillis());loginUser.setExpireTime(loginUser.getLoginTime() + expireTime * MILLIS_MINUTE);// 根据uuid将loginUser缓存String userKey = getTokenKey(loginUser.getToken());tokenCache.put(userKey, loginUser);}/*** 设置用户代理信息** @param loginUser 登录信息*/public void setUserAgent(LoginUser loginUser) {UserAgent userAgent = UserAgent.parseUserAgentString(ServletUtils.getRequest().getHeader("User-Agent"));String ip = IpUtils.getIpAddr();loginUser.setIpaddr(ip);loginUser.setBrowser(userAgent.getBrowser().getName());loginUser.setOs(userAgent.getOperatingSystem().getName());}/*** 从数据声明生成令牌** @param claims 数据声明* @return 令牌*/private String createToken(Map<String, Object> claims) {String token = Jwts.builder().setClaims(claims).signWith(SignatureAlgorithm.HS512, secret).compact();return token;}/*** 从令牌中获取数据声明** @param token 令牌* @return 数据声明*/private Claims parseToken(String token) {return Jwts.parser().setSigningKey(secret).parseClaimsJws(token).getBody();}/*** 从令牌中获取用户名** @param token 令牌* @return 用户名*/public String getUsernameFromToken(String token) {Claims claims = parseToken(token);return claims.getSubject();}/*** 获取请求token** @param request* @return token*/private String getToken(HttpServletRequest request) {String token = request.getHeader(header);if (StringUtils.isNotEmpty(token) && token.startsWith(TOKEN_PREFIX)) {token = token.replace(TOKEN_PREFIX, "");}return token;}private String getTokenKey(String uuid) {return LOGIN_TOKEN_KEY + uuid;}
}CORS处理器：CorsFilterConfiguration
@Component
public class CorsFilterConfiguration {@Beanpublic CorsFilter corsFilter() {CorsConfiguration config = new CorsConfiguration();config.setAllowCredentials(true);// 设置访问源地址config.addAllowedOriginPattern("*");// 设置访问源请求头config.addAllowedHeader("*");// 设置访问源请求方法config.addAllowedMethod("*");// 有效期 1800秒config.setMaxAge(1800L);// 添加映射路径，拦截一切请求UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();source.registerCorsConfiguration("/**", config);// 返回新的CorsFilterreturn new CorsFilter(source);}
}鉴权失败处理类：AuthenticationEntryPointImpl
/*** 认证失败处理类 返回未授权** @author ruoyi*/
@Component
public class AuthenticationEntryPointImpl implements AuthenticationEntryPoint, Serializable
{private static final long serialVersionUID = -8970718410437077606L;@Overridepublic void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException e)throws IOException{int code = HttpStatus.UNAUTHORIZED;String msg = String.format("请求访问：%s，认证失败，无法访问系统资源", request.getRequestURI());ServletUtils.renderString(response, JSON.toJSONString(AjaxResult.error(code, msg)));}
}退出登录处理类：LogoutSuccessHandlerImpl
退出登录时，清除缓存token信息。记录退出日志登录
@Configuration
public class LogoutSuccessHandlerImpl implements LogoutSuccessHandler
{@Autowiredprivate TokenService tokenService;/*** 退出处理** @return*/@Overridepublic void onLogoutSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication)throws IOException, ServletException{LoginUser loginUser = tokenService.getLoginUser(request);if (StringUtils.isNotNull(loginUser)){String userName = loginUser.getUsername();// 删除用户缓存记录tokenService.delLoginUser(loginUser.getToken());//TODO 记录退出日志}ServletUtils.renderString(response, JSON.toJSONString(AjaxResult.success("退出成功")));}
}
LoginService改造
要保持登录状态，需将token添加到缓存中。
@Service
public class LoginService {// 令牌自定义标识@Value("${token.header}")private String header;// 令牌秘钥@Value("${token.secret}")private String secret;// 令牌有效期（默认30分钟）@Value("${token.expireTime}")private int expireTime;@Resourceprivate AuthenticationManager authenticationManager;@Autowiredprivate TokenService tokenService;public String login(String username, String password) {// 用户验证Authentication authentication = null;try {UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(username, password);AuthenticationContextHolder.setContext(authenticationToken);authentication = authenticationManager.authenticate(authenticationToken);} catch (Exception e) {throw new RuntimeException("用户名或密码错误");} finally {AuthenticationContextHolder.clearContext();}LoginUser loginUser = (LoginUser) authentication.getPrincipal();// 生成tokenreturn tokenService.createToken(loginUser);}}
接口测试
没有获取token时接口访问：返回统一的鉴权异常处理信息
2、用户登录接口访问成功，返回token：
3、接口添加token参数后，访问成功：
补充，在所有swagger接口上添加Header参数的配置方法：
在SwaggerConfiguration 类的 createRestApi()方法中添加以下代码：
@Beanpublic Docket createRestApi() {//全局设置Hread参数，方法测试ParameterBuilder ticketPar = new ParameterBuilder();List<Parameter> pars = new ArrayList<Parameter>();ticketPar.name("Authorization").description("user ticket").modelRef(new ModelRef("string")).parameterType("header").required(false).build(); //header中的ticket参数非必填，传空也可以pars.add(ticketPar.build()); //根据每个方法名也知道当前方法在设置什么参数// 创建 Docket 对象return new Docket(DocumentationType.SWAGGER_2) // 文档类型，使用 Swagger2.apiInfo(this.apiInfo()) // 设置 API 信息// 扫描 Controller 包路径，获得 API 接口.select().apis(RequestHandlerSelectors.basePackage("com.luo.chengrui.labs.lab04.controller")).paths(PathSelectors.any())// 构建出 Docket 对象.build().globalOperationParameters(pars);}