springboot+vue项目实战2024第二集jwt

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

  @Test
    public 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);
    }

    @Test
    public 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 {
    @Override
    public 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 {
    @Autowired
    private LoginInterceptor loginInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginInterceptor).excludePathPatterns("user/login","/user/register");
    }

}