UnsatisfiedDependencyException - 创建具有名称的 bean 时出错

Question

当我尝试运行测试用例时，我一直在运行这个问题。无法弄清楚发生了什么。请问有什么帮助吗？谢谢。

Message:
N/A
Stack trace:
java.lang.IllegalStateException: Failed to load ApplicationContext
    at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:132)        
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'webSecurityConfig': Unsatisfied dependency expressed through field 'jwtTokenProvider'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.utopia.auth.jwk.JwtTokenProvider' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:660)
    
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.utopia.auth.jwk.JwtTokenProvider' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1790)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1346)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1300)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:657)
    ... 89 more
    enter code here

这是我的配置文件，这里发生的错误似乎基于堆栈跟踪。

@Configuration
@EnableWebSecurity
public class WebSecurityConfig  extends WebSecurityConfigurerAdapter {

    @Autowired
    private JwtTokenProvider jwtTokenProvider;

    @Autowired
    private UserDetailsService userDetailsService;

    @Bean
    public PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.cors().and()
                .authorizeRequests()
                .antMatchers("/auth/**").permitAll()
                .anyRequest().fullyAuthenticated()
                .and()
                .logout().permitAll()
                .logoutRequestMatcher(new AntPathRequestMatcher("/api/user/logout", "POST"))
                .and()
                .formLogin().loginPage("/auth/login").and()
                .httpBasic().and()
                .csrf().disable();

        //jwt filter
        http.addFilter(new JWTAuthorizationFilter(authenticationManager(),jwtTokenProvider));
    }



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

    //Cross origin resource sharing.
    @Bean
    public WebMvcConfigurer corsConfigurer(){
        return new WebMvcConfigurer() {
            @Override
            public void addCorsMappings(CorsRegistry registry) {
                registry.addMapping("/**").allowedOrigins("*").allowedMethods("*");
            }
        };
    }
}

以及实际的 JWTProvider 文件

 @Component
public class JwtTokenProvider {

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

    @Value("${app.jwt.token.prefix}")
    private String jwtTokenPrefix;

    @Value("${app.jwt.header.string}")
    private String jwtHeaderString;

    @Value("${app.jwt.expiration-in-ms}")
    private Long jwtExpirationInMs;

    public String generateToken(Authentication auth) {
        String authorities = auth.getAuthorities().stream().map(GrantedAuthority::getAuthority)
                .collect(Collectors.joining());

        return Jwts.builder().setSubject(auth.getName()).claim("roles", authorities)
                .setExpiration(new Date(System.currentTimeMillis() + jwtExpirationInMs))
                .signWith(SignatureAlgorithm.HS512, jwtSecret).compact();
    }

    public Authentication getAuthentication(HttpServletRequest request) {
        String token = resolveToken(request);
        if (token == null) {
            return null;
        }
        Claims claims = Jwts.parser().setSigningKey(jwtSecret).parseClaimsJws(token).getBody();
        String username = claims.getSubject();
        final List<GrantedAuthority> authorities = Arrays.stream(claims.get("roles").toString().split(","))
                .map(role -> role.startsWith("ROLE_") ? role : "ROLE_" + role).map(SimpleGrantedAuthority::new)
                .collect(Collectors.toList());
        return username != null ? new UsernamePasswordAuthenticationToken(username, null, authorities) : null;
    }

    public boolean validateToken(HttpServletRequest request) {
        String token = resolveToken(request);
        if (token == null) {
            return false;
        }
        Claims claims = Jwts.parser().setSigningKey(jwtSecret).parseClaimsJws(token).getBody();
        if (claims.getExpiration().before(new Date())) {
            return false;
        }
        return true;
    }

    private String resolveToken(HttpServletRequest req) {
        // Bearer key...
        String bearerToken = req.getHeader(jwtHeaderString);
        if (bearerToken != null && bearerToken.startsWith(jwtTokenPrefix)) {
            return bearerToken.substring(7, bearerToken.length());
        }
        return null;
    }
}

老实说，我不明白 Spring 到底在抱怨什么。过去4个小时一直在调试它，仍然没有。 (

Answer 1

一个可能的原因是 Spring 没有在其默认组件扫描中选择它。默认情况下，Spring 只会将 main 方法封装在最顶层的 SpringApplication 类下。

所以如果你的 SpringApplication 位于：my.app.pkg.SpringApplication.java

my.app.pkg 中的其他类不会自动自动装配。然后你可以移动到下面的包：my.app.pkg.abc

你也可以使用@ComponentScan(...)注解，列出所有带有spring组件的包。