springboot集成kafka ssl 消费者（SpringBoot集成JWT（极简版））

SpringBoot集成JWT（极简版）

在WebConfig配置类中设置接口统一前缀

import org.springframework.context.annotation.Configuration; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.servlet.config.annotation.PathMatchConfigurer; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; @Configuration public class WebConfig implements WebMvcConfigurer { @Override public void configurePathMatch(PathMatchConfigurer configurer) { // 指定controller统一的接口前缀 configurer.addPathPrefix("/api", clazz -> clazz.isAnnotationPresent(RestController.class)); } }

导入JWT依赖

<dependency> <groupId>com.auth0</groupId> <artifactId>java-jwt</artifactId> <version>3.10.3</version> </dependency>

JWT工具类TokenUtils.java(生成token的工具类)

import cn.hutool.core.date.DateUtil; import cn.hutool.core.util.StrUtil; import com.auth0.jwt.JWT; import com.auth0.jwt.algorithms.Algorithm; import com.bai.entity.Admin; import com.bai.service.AdminService; import lombok.extern.slf4j.Slf4j; import org.springframework.stereotype.Component; import org.springframework.web.context.request.RequestContextHolder; import org.springframework.web.context.request.ServletRequestAttributes; import javax.annotation.PostConstruct; import javax.annotation.Resource; import javax.servlet.http.HttpServletRequest; import java.util.Date; @Component @Slf4j public class TokenUtils { private static AdminService staticAdminService; @Resource private AdminService adminService; @PostConstruct public void setUserService() { staticAdminService = adminService; } /** * 生成token * * @return */ public static String genToken(String adminId, String sign) { return JWT.create().withAudience(adminId) // 将 user id 保存到 token 里面,作为载荷 .withExpiresAt(DateUtil.offsetHour(new Date(), 2)) // 2小时后token过期 .sign(Algorithm.HMAC256(sign)); // 以 password 作为 token 的密钥 } /** * 获取当前登录的用户信息 * * @return user对象 * /admin?token=xxxx */ public static Admin getCurrentAdmin() { String token = null; try { HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest(); token = request.getHeader("token"); if (StrUtil.isNotBlank(token)) { token = request.getParameter("token"); } if (StrUtil.isBlank(token)) { log.error("获取当前登录的token失败  
    
    
 ， token: {}", token); return null; } String adminId = JWT.decode(token).getAudience().get(0); return staticAdminService.getById(Integer.valueOf(adminId)); } catch (Exception e) { log.error("获取当前登录的管理员信息失败, token={}", token, e); return null; } } }

拦截器JwtInterceptor.java

import cn.hutool.core.util.StrUtil; import com.auth0.jwt.JWT; import com.auth0.jwt.JWTVerifier; import com.auth0.jwt.algorithms.Algorithm; import com.auth0.jwt.exceptions.JWTVerificationException; import com.bai.entity.Admin; import com.bai.exception.ServiceException; import com.bai.service.AdminService; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import org.springframework.web.servlet.HandlerInterceptor; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; @Component @Slf4j public class LoginJWTInterceptor implements HandlerInterceptor { private static final String ERROR_CODE_401 = "401"; @Autowired private AdminService adminService; @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) { //这里是判断浏览器请求头里的token String token = request.getHeader("token"); if (StrUtil.isBlank(token)) { token = request.getParameter("token"); } // 执行认证 if (StrUtil.isBlank(token)) { throw new ServiceException(ERROR_CODE_401, "无token

     


     


     ，请重新登录"); } // 获取 token 中的adminId String adminId; Admin admin; try { adminId = JWT.decode(token).getAudience().get(0); // 根据token中的userid查询数据库 admin = adminService.getById(Integer.parseInt(adminId)); } catch (Exception e) { String errMsg = "token验证失败 




 




 




，请重新登录"; log.error(errMsg + ", token=" + token, e); throw new ServiceException(ERROR_CODE_401, errMsg); } if (admin == null) { throw new ServiceException(ERROR_CODE_401, "用户不存在  

   

   

，请重新登录"); } try { // 用户密码加签验证 token JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256(admin.getPassword())).build(); jwtVerifier.verify(token); // 验证token } catch (JWTVerificationException e) { throw new ServiceException(ERROR_CODE_401, "token验证失败

     

     

     ，请重新登录"); } return true; } }

在WebConfig配置类中添加自定义拦截器

import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Configuration; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.servlet.config.annotation.CorsRegistry; import org.springframework.web.servlet.config.annotation.InterceptorRegistry; import org.springframework.web.servlet.config.annotation.PathMatchConfigurer; import org.springframework.web.servlet.config.annotation.WebMvcConfigurer; @Configuration public class WebConfig implements WebMvcConfigurer { @Autowired private LoginJWTInterceptor loginJWTInterceptor; @Override public void configurePathMatch(PathMatchConfigurer configurer) { // 指定controller统一的接口前缀 configurer.addPathPrefix("/api", clazz -> clazz.isAnnotationPresent(RestController.class)); } // 加自定义拦截器JwtInterceptor  




  




  



，设置拦截规则 //.excludePathPatterns("/api/admin/login");放开登录接口  


  


  


，因为登录的时候还没有token @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(loginJWTInterceptor) // 添加所有路径需要校验 .addPathPatterns("/api/**").excludePathPatterns("/api/admin/login", "/api/admin/register");//不需要拦截的接口 } }

设置自定义头配置（前端在request拦截器设置自定义头）

import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.web.cors.CorsConfiguration; import org.springframework.web.cors.UrlBasedCorsConfigurationSource; import org.springframework.web.filter.CorsFilter; @Configuration public class CrosConfiguration { @Bean public CorsFilter corsFilter() { UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(); CorsConfiguration corsConfiguration = new CorsConfiguration(); corsConfiguration.addAllowedOrigin("*"); // 1 设置访问源地址 corsConfiguration.addAllowedHeader("*"); // 2 设置访问源请求头 corsConfiguration.addAllowedMethod("*"); // 3 设置访问源请求方法 source.registerCorsConfiguration("/**", corsConfiguration); // 4 对接口配置跨域设置 return new CorsFilter(source); } }