SpringBoot同时监听多个端口的完整方法

# 自己使用
curl http://localhost:8081/a/api/foo

# 合作商使用
curl http://localhost:8082/b/api/foo

@Bean
public ServletWebServerFactory servletContainer() {
    TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory();
    Connector aConnector = new Connector(TomcatServletWebServerFactory.DEFAULT_PROTOCOL);
    aConnector.setPort(8081);
    factory.addAdditionalTomcatConnectors(aConnector);

    Connector bConnector = new Connector(TomcatServletWebServerFactory.DEFAULT_PROTOCOL);
    bConnector.setPort(8082);
    factory.addAdditionalTomcatConnectors(bConnector);
    return factory;
}

@Slf4j
@RestController
@RequestMapping("/api")
public class FooController {

    @GetMapping("/foo")
    public String foo() {
        return "foo";
    }
}

# 可以访问的路径
curl http://localhost:8080/api/foo
curl http://localhost:8081/api/foo
curl http://localhost:8082/api/foo

public class MultiPortIntercpetor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        int localPort = request.getLocalPort();
        String requestURI = request.getRequestURI();
        if (localPort == 8081 && requestURI.startsWith("/a")) {
            return true;
        }
        if (localPort == 8082 && requestURI.startsWith("/b")) {
            return true;
        }

        Map<String, Object>  map = new HashMap<>();
        map.put("code", 404);
        map.put("success", false);
        map.put("message", "请求错误");
        response.setContentType("application/json;charset=UTF-8");
        response.getWriter().write(JSON.toJSONString(map));
        return false;
    }
}

@Override
public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(new MultiPortIntercpetor()).addPathPatterns("/**");
}

@Override
public void configurePathMatch(PathMatchConfigurer configurer) {
    configurer.addPathPrefix("/a", clazz -> clazz.equals(FooController.class));
    configurer.addPathPrefix("/b", clazz -> clazz.equals(FooV2Controller.class));
}