@Configuration public class JwtWebMvcConfigurer implements WebMvcConfigurer { private final RedisTemplateUtil<String, Object> redisManager; private final ThreadPoolTaskExecutor threadPoolTaskExecutor; public JwtWebMvcConfigurer(RedisTemplateUtil<String, Object> redisManager , ThreadPoolTaskExecutor threadPoolTaskExecutor) { this.redisManager = redisManager; this.threadPoolTaskExecutor = threadPoolTaskExecutor; } @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new JwtInterceptor(redisManager, threadPoolTaskExecutor)) .addPathPatterns( "/**" ) .excludePathPatterns( "/bg/screen/**", // 大屏接口 "/swagger-ui.html", "/doc.html", "/swaggerLogin", "/login", "/permSet/**", "/configuration/**", "/error", "/webjars/**", "/swagger-resources/**", "/v2/**" ); }解释代码

这段代码定义了一个名为 `JwtWebMvcConfigurer` 的 `@Configuration` 类，实现了 Spring 的 `WebMvcConfigurer` 接口，用于配置 Spring MVC 的拦截器。其中构造函数注入了两个依赖，分别是 RedisTemplateUtil 和 ThreadPoolTaskExecutor。

`addInterceptors` 方法用于注册一个名为 `JwtInterceptor` 的拦截器，并配置拦截的 URL 路径和排除的 URL 路径。其中：

- `JwtInterceptor` 是自定义的拦截器，用于进行 JWT 的身份验证和权限校验。
- `addPathPatterns` 方法指定需要拦截的 URL 路径，这里使用了通配符 `/**`，表示拦截所有请求。
- `excludePathPatterns` 方法指定不需要拦截的 URL 路径，包括一些静态资源和一些公共接口，如 Swagger 接口、登录接口等。

总之，这段代码的作用是为 Spring MVC 应用程序添加一个 JWT 拦截器，并配置拦截的 URL 路径和排除的 URL 路径，以实现对请求的身份验证和权限校验。

相关问题

springboot security项目 如何封装jwt 及token 其中数据表为package com.aokace.entity; import com.baomidou.mybatisplus.annotation.IdType; import com.baomidou.mybatisplus.annotation.TableField; import com.baomidou.mybatisplus.annotation.TableId; import com.baomidou.mybatisplus.annotation.TableName; import java.io.Serializable; import io.swagger.annotations.ApiModel; import io.swagger.annotations.ApiModelProperty; import lombok.Getter; import lombok.Setter; /** * <p> * * </p> * * @author aokace * @since 2023-05-23 */ @Getter @Setter @TableName("user") @ApiModel(value = "User对象", description = "") public class User implements Serializable { private static final long serialVersionUID = 1L; @TableId(value = "userid", type = IdType.AUTO) private Integer userid; @TableField("authority") private String authority; @TableField("role") private String role; @TableField("username") private String username; @TableField("password") private String password; }

首先需要引入相关的依赖，包括JWT和Spring Security的依赖：

<dependency>
    <groupId>io.jsonwebtoken</groupId>
    <artifactId>jjwt</artifactId>
    <version>0.9.1</version>
</dependency>

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
</dependency>

然后创建一个JwtTokenUtil类来实现JWT的签发和验证功能：

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

@Component
public class JwtTokenUtil {

    private static final String CLAIM_KEY_USERNAME = "sub";
    private static final String CLAIM_KEY_CREATED = "created";

    @Value("${jwt.secret}")
    private String secret;

    @Value("${jwt.expiration}")
    private Long expiration;

    public String generateToken(UserDetails userDetails) {
        Map<String, Object> claims = new HashMap<>();
        claims.put(CLAIM_KEY_USERNAME, userDetails.getUsername());
        claims.put(CLAIM_KEY_CREATED, new Date());
        return generateToken(claims);
    }

    public String getUsernameFromToken(String token) {
        String username;
        try {
            Claims claims = getClaimsFromToken(token);
            username = claims.getSubject();
        } catch (Exception e) {
            username = null;
        }
        return username;
    }

    public Date getCreatedDateFromToken(String token) {
        Date created;
        try {
            Claims claims = getClaimsFromToken(token);
            created = new Date((Long) claims.get(CLAIM_KEY_CREATED));
        } catch (Exception e) {
            created = null;
        }
        return created;
    }

    public Date getExpirationDateFromToken(String token) {
        Date expiration;
        try {
            Claims claims = getClaimsFromToken(token);
            expiration = claims.getExpiration();
        } catch (Exception e) {
            expiration = null;
        }
        return expiration;
    }

    public boolean isTokenExpired(String token) {
        Date expiration = getExpirationDateFromToken(token);
        return expiration.before(new Date());
    }

    public String refreshToken(String token) {
        String refreshedToken;
        try {
            Claims claims = getClaimsFromToken(token);
            claims.put(CLAIM_KEY_CREATED, new Date());
            refreshedToken = generateToken(claims);
        } catch (Exception e) {
            refreshedToken = null;
        }
        return refreshedToken;
    }

    public boolean validateToken(String token, UserDetails userDetails) {
        String username = getUsernameFromToken(token);
        return username.equals(userDetails.getUsername()) && !isTokenExpired(token);
    }

    private Claims getClaimsFromToken(String token) {
        Claims claims;
        try {
            claims = Jwts.parser()
                    .setSigningKey(secret)
                    .parseClaimsJws(token)
                    .getBody();
        } catch (Exception e) {
            claims = null;
        }
        return claims;
    }

    private String generateToken(Map<String, Object> claims) {
        Date expirationDate = new Date(System.currentTimeMillis() + expiration * 1000);
        JwtBuilder builder = Jwts.builder()
                .setClaims(claims)
                .setExpiration(expirationDate)
                .signWith(SignatureAlgorithm.HS512, secret);
        return builder.compact();
    }
}

其中，JwtTokenUtil类中的generateToken方法用于生成JWT Token，getUsernameFromToken和getExpirationDateFromToken方法用于解析JWT Token中的用户名和过期时间，isTokenExpired方法用于判断JWT Token是否已经过期，refreshToken方法用于刷新JWT Token，validateToken方法用于验证JWT Token是否有效，getClaimsFromToken方法用于从JWT Token中获取Claims。

然后在Spring Security的配置类中添加JwtTokenFilter来实现JWT的过滤和验证：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsService userDetailsService;

    @Autowired
    private JwtTokenFilter jwtTokenFilter;

    @Autowired
    private JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(new BCryptPasswordEncoder());
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable()
                .authorizeRequests()
                .antMatchers("/login").permitAll()
                .anyRequest().authenticated()
                .and()
                .exceptionHandling().authenticationEntryPoint(jwtAuthenticationEntryPoint)
                .and()
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);

        http.addFilterBefore(jwtTokenFilter, UsernamePasswordAuthenticationFilter.class);
    }

    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
}

其中，SecurityConfig类中的configure方法用于配置Spring Security的策略，addFilterBefore方法用于添加JwtTokenFilter，authenticationManagerBean方法用于获取AuthenticationManager。

最后，在登录接口中，使用JwtTokenUtil生成JWT Token并返回给前端：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class AuthController {

    @Autowired
    private AuthenticationManager authenticationManager;

    @Autowired
    private JwtTokenUtil jwtTokenUtil;

    @Autowired
    private UserDetailsService userDetailsService;

    @PostMapping("/login")
    public ResponseEntity<?> login(@RequestBody AuthRequest authRequest) throws Exception {
        try {
            Authentication authentication = authenticationManager.authenticate(
                    new UsernamePasswordAuthenticationToken(authRequest.getUsername(), authRequest.getPassword())
            );
            UserDetails userDetails = userDetailsService.loadUserByUsername(authRequest.getUsername());
            String token = jwtTokenUtil.generateToken(userDetails);
            return ResponseEntity.ok(new AuthResponse(token));
        } catch (Exception e) {
            throw new Exception("Incorrect username or password", e);
        }
    }
}

其中，AuthController类中的login方法用于处理登录请求，通过authenticationManager.authenticate方法验证用户名和密码，然后使用JwtTokenUtil生成JWT Token并返回给前端。

@Configuration public class TokenInterceptor implements ClientHttpRequestInterceptor { private static final Logger log; private final String TRACE_ID = "traceId"; public ClientHttpResponse intercept(final HttpRequest request, final byte[] body, final ClientHttpRequestExecution clientHttpRequestExecution) throws IOException { TokenInterceptor.log.info("===request: {}, {}", (Object)request.getURI().getHost(), (Object)request.getURI().getPath()); final ServletRequestAttributes attributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes(); final HttpServletRequest httpServletRequest = attributes.getRequest(); final String token = httpServletRequest.getHeader("Authorization"); if (StringUtils.isNotBlank(token)) { request.getHeaders().add("Authorization", token); } final String traceId = httpServletRequest.getHeader("traceId"); if (com.cbrain.commons.utils.StringUtils.isBlank((CharSequence)traceId)) { final String uniqueId = UUID.randomUUID().toString().replace("-", ""); request.getHeaders().add("traceId", uniqueId); } return clientHttpRequestExecution.execute(request, body); } static { log = LoggerFactory.getLogger((Class)TokenInterceptor.class); } }有漏洞吗

这段代码主要是一个拦截器，用于在发送请求时自动添加请求头信息，包括Authorization和traceId。在代码实现上没有明显的漏洞，但是需要注意以下几点：

1. Authorization token的安全性需要保证，如果token泄露或被劫持，可能会导致安全问题。
2. traceId的生成方式需要保证唯一性，可以考虑使用更加复杂的算法生成，以避免重复。
3. 在使用HttpServletRequest.getHeader方法获取请求头信息时，需要注意空指针异常的情况，需要对获取到的值进行判空处理。

总之，这段代码需要在实际应用场景中进行测试和验证，以确保安全性和稳定性。