1.登陆注册校验token,jwt校验

<!--java-jwt--><dependency><groupId>com.auth0</groupId><artifactId>java-jwt</artifactId><version>4.4.0</version></dependency>
<!--test--><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId></dependency>

2.jwt测试

  @Testpublic void test(){Map<String, Object> map = new HashMap<>();map.put("id",1);map.put("username","zhangsan");String token = JWT.create().withClaim("user",map).withExpiresAt(new Date(System.currentTimeMillis()+1000*60*60*12)).sign(Algorithm.HMAC256("ivan"));System.out.println(token);}@Testpublic void testParse(){String token="eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyIjp7ImlkIjoxLCJ1c2VybmFtZSI6InpoYW5nc2FuIn0sImV4cCI6MTcyMDU4NzIzN30." +"_kprHQuQJZgeMS9yuNBYIi2xfT26Xk3goLNg1lStHGo";JWTVerifier j = JWT.require(Algorithm.HMAC256("ivan")).build();DecodedJWT verify = j.verify(token);Map<String, Claim> claims = verify.getClaims();Claim user = claims.get("user");System.out.println(user);}

3.封装工具函数

public class JwtUtil {private static final String KEY = "ivan";public static String genToken(Map<String,Object> claims) {return JWT.create().withClaim("claims",claims).withExpiresAt(new Date(System.currentTimeMillis()+1000*60*60*12)).sign(Algorithm.HMAC256(KEY));}public static Map<String,Object> parseToken(String token){return JWT.require(Algorithm.HMAC256(KEY)).build().verify(token).getClaim("claims").asMap();}
}

4.拦截器设置

@Component
public class LoginInterceptor implements HandlerInterceptor {@Overridepublic boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {String token = request.getHeader("Authorization");try {Map<String, Object> map = JwtUtil.parseToken(token);return true;}catch (Exception e){response.setStatus(401);return false;}}
}

5.将拦截器注册到注册中心

@Configuration
public class WebConfig implements WebMvcConfigurer {@Autowiredprivate LoginInterceptor loginInterceptor;@Overridepublic void addInterceptors(InterceptorRegistry registry) {registry.addInterceptor(loginInterceptor).excludePathPatterns("user/login","/user/register");}}