Spring boot 错误白标签错误页面：在级别1上查询映射时出现意外错误（类型=未找到，状态=404）_Spring Boot_Spring Mvc_Kotlin

Spring boot 错误白标签错误页面：在级别1上查询映射时出现意外错误（类型=未找到，状态=404）

spring-boot spring-mvc kotlin

Spring boot 错误白标签错误页面：在级别1上查询映射时出现意外错误（类型=未找到，状态=404）,spring-boot,spring-mvc,kotlin,Spring Boot,Spring Mvc,Kotlin,在我看来，他面临着一个极其模糊和难以理解的问题。我在Spring Boot+Kotlin上有一个应用程序。以前，应用程序对Rest控制器有例外；最近需要在响应中提供html，因此添加了一个常规控制器。但是，当将此控制器映射到多个级别时-所有请求（具有多个级别）都会导致错误： <html> <body> <h1> Whitelabel Error Page </h1> <p> This application has no explic

在我看来，他面临着一个极其模糊和难以理解的问题。我在Spring Boot+Kotlin上有一个应用程序。以前，应用程序对Rest控制器有例外；最近需要在响应中提供html，因此添加了一个常规控制器。但是，当将此控制器映射到多个级别时-所有请求（具有多个级别）都会导致错误：

<html>
<body>
<h1> Whitelabel Error Page </h1>
<p> This application has no explicit mapping for / error, so you are seeing this as a fallback. </p>
<div> There was an unexpected error (type = Not Found, status = 404). </div>
<div> No message available </div>
</body>
</html>

WebMvcConfig

@Configuration
@EnableWebMvc
class WebMvcConfig : WebMvcConfigurer {

    private final val classpathResourceLocations = arrayOf(
            "classpath:/META-INF/resources/",
            "classpath:/resources/",
            "classpath:/static/",
            "classpath:/public/"
    )

    override fun addResourceHandlers(registry: ResourceHandlerRegistry) {
        if (!registry.hasMappingForPattern("/**")) {
            registry.addResourceHandler("/**")
                    .addResourceLocations(*classpathResourceLocations)
        }
    }

    override fun addViewControllers(registry: ViewControllerRegistry) {
        registry.addViewController("/").setViewName("index.html")
    }

    @Bean
    fun internalResourceViewResolver(): ViewResolver {
        val viewResolver = InternalResourceViewResolver()
        viewResolver.setViewClass(InternalResourceView::class.java)
        return viewResolver
    }

}

@Configuration
@EnableWebSecurity
class CommonSecurityConfig : WebSecurityConfigurerAdapter() {

    private val permitPatterns = arrayOf(
            "/",
            "/welcome/**",
            "/resources/**",
            "/actuator/health**",
            "/swagger-resources/**",
            "/swagger-ui.html",
            "/v2/api-docs",
            "/webjars/**"
    )

    override fun configure(http: HttpSecurity) {
        super.configure(http)

        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .cors().configurationSource(corsConfigurationSource())
                .and()
                .authorizeRequests()
                .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
                .antMatchers(*permitPatterns).permitAll()
                .antMatchers("/api/internal/**").hasAuthority("ADMIN")
                .anyRequest().authenticated()
                .and()
                .addFilterAfter(filter(), UsernamePasswordAuthenticationFilter::class.java)
    }

    // ... some logic after ...
}

网站安全配置

@Configuration
@EnableWebMvc
class WebMvcConfig : WebMvcConfigurer {

    private final val classpathResourceLocations = arrayOf(
            "classpath:/META-INF/resources/",
            "classpath:/resources/",
            "classpath:/static/",
            "classpath:/public/"
    )

    override fun addResourceHandlers(registry: ResourceHandlerRegistry) {
        if (!registry.hasMappingForPattern("/**")) {
            registry.addResourceHandler("/**")
                    .addResourceLocations(*classpathResourceLocations)
        }
    }

    override fun addViewControllers(registry: ViewControllerRegistry) {
        registry.addViewController("/").setViewName("index.html")
    }

    @Bean
    fun internalResourceViewResolver(): ViewResolver {
        val viewResolver = InternalResourceViewResolver()
        viewResolver.setViewClass(InternalResourceView::class.java)
        return viewResolver
    }

}

@Configuration
@EnableWebSecurity
class CommonSecurityConfig : WebSecurityConfigurerAdapter() {

    private val permitPatterns = arrayOf(
            "/",
            "/welcome/**",
            "/resources/**",
            "/actuator/health**",
            "/swagger-resources/**",
            "/swagger-ui.html",
            "/v2/api-docs",
            "/webjars/**"
    )

    override fun configure(http: HttpSecurity) {
        super.configure(http)

        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .cors().configurationSource(corsConfigurationSource())
                .and()
                .authorizeRequests()
                .antMatchers(HttpMethod.OPTIONS, "/**").permitAll()
                .antMatchers(*permitPatterns).permitAll()
                .antMatchers("/api/internal/**").hasAuthority("ADMIN")
                .anyRequest().authenticated()
                .and()
                .addFilterAfter(filter(), UsernamePasswordAuthenticationFilter::class.java)
    }

    // ... some logic after ...
}

因此，如果我沿着路径

http://localhost:8080/welcome

，我将获得

index.html

页面如果我沿着路径

http://localhost:8080/welcome/welcome

-我发现上面的错误

index.html

文件位于路径

src/main/resources/static/index.html

这是因为Spring解析静态页面的方式。
由于

“/welcome/welcome”

是嵌套的，因此您需要使用正确的资源相对路径或绝对路径

@Controller
@RequestMapping("/welcome")
class WelcomeEndpoint {

    @GetMapping("/welcome")
    fun signIn(): String {
        return "../index.html"
    }
}

或

天哪，我尝试过这样的选择，我甚至没有想过，非常感谢！