我在Sping Boot 2中遇到了同样的问题。我已经将资源解析器位置添加为静态目录，如果与任何文件都不匹配，则加载index.html

@Configuration
public class WebConfig implements WebMvcConfigurer {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {

        registry.addResourceHandler("/**/*")
                .addResourceLocations("classpath:/static/")
                .resourceChain(true)
                .addResolver(new PathResourceResolver() {
                    @Override
                    protected Resource getResource(String resourcePath, Resource location) throws IOException {
                        Resource requestedResource = location.createRelative(resourcePath);
                        return requestedResource.exists() && requestedResource.isReadable() ? requestedResource : new ClassPathResource("/static/index.html");
                    }
                });

}

将{ useHash：true }添加到您的routerModule，它对我有效：
导入：[路由器模块.forRoot（路由，{ useHash：true}）]

由于Spring检查资源/myHome/home而导致错误发生，但未找到
资源位置为/app，因此您可以修复-

1) Use hashRouting in angular application

或

2) Redirect to '/' in springboot aplication when requesting came from another url /**

这就是我找到的解决方案：这是在Kotlin虽然。但并不难改变之间。
https://github.com/emmapatterson/webflux-kotlin-angular/blob/master/README.md
主要代码是：

import org.springframework.context.annotation.Configuration
import org.springframework.web.server.ServerWebExchange
import org.springframework.web.server.WebFilter
import org.springframework.web.server.WebFilterChain
import reactor.core.publisher.Mono

private const val INDEX_FILE_PATH = "/index.html"

@Configuration
internal class StaticContentConfiguration(): WebFilter {

    override fun filter(exchange: ServerWebExchange, chain: WebFilterChain): Mono<Void> {
        val path = exchange.request.uri.path
        if (pathMatchesWebAppResource(path)) {
            return redirectToWebApp(exchange, chain)
        }
        return chain.filter(exchange)
    }

    private fun redirectToWebApp(exchange: ServerWebExchange, chain: WebFilterChain) = 
    chain.filter(exchange.mutate()
        .request(exchange.request.mutate().path(INDEX_FILE_PATH).build())
        .build())

    private fun pathMatchesWebAppResource(path: String) =
        !path.startsWith("/api") && path.matches("[^\\\\.]*".toRegex())
}