网关新增swagger-ui，微服务文档归集，可显示所有微服务文档

hcframe-parent/hcframe-gateway/src/main/java/com/hcframe/gateway/swagger/SwaggerHandler.java

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+package com.hcframe.gateway.swagger;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import reactor.core.publisher.Mono;
+import springfox.documentation.swagger.web.*;
+
+import java.util.Optional;
+
+/**
+ * @author lhc
+ * @version 1.0
+ * @className SwaggerHandler
+ * @date 2021年04月25日 5:01 下午
+ * @description 描述
+ */
+@RestController
+@RequestMapping("/swagger-resources")
+public class SwaggerHandler {
+    @Autowired(required = false)
+    private SecurityConfiguration securityConfiguration;
+    @Autowired(required = false)
+    private UiConfiguration uiConfiguration;
+    private final SwaggerResourcesProvider swaggerResources;
+
+    @Autowired
+    public SwaggerHandler(SwaggerResourcesProvider swaggerResources) {
+        this.swaggerResources = swaggerResources;
+    }
+
+
+    @GetMapping("/configuration/security")
+    public Mono<ResponseEntity<SecurityConfiguration>> securityConfiguration() {
+        return Mono.just(new ResponseEntity<>(
+                Optional.ofNullable(securityConfiguration).orElse(SecurityConfigurationBuilder.builder().build()), HttpStatus.OK));
+    }
+
+    @GetMapping("/configuration/ui")
+    public Mono<ResponseEntity<UiConfiguration>> uiConfiguration() {
+        return Mono.just(new ResponseEntity<>(
+                Optional.ofNullable(uiConfiguration).orElse(UiConfigurationBuilder.builder().build()), HttpStatus.OK));
+    }
+
+    @GetMapping("")
+    public Mono<ResponseEntity> swaggerResources() {
+        return Mono.just((new ResponseEntity<>(swaggerResources.get(), HttpStatus.OK)));
+    }
+}

hcframe-parent/hcframe-gateway/src/main/java/com/hcframe/gateway/swagger/SwaggerProvider.java

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+package com.hcframe.gateway.swagger;
+
+import lombok.AllArgsConstructor;
+import org.springframework.cloud.gateway.config.GatewayProperties;
+import org.springframework.cloud.gateway.route.RouteLocator;
+import org.springframework.cloud.gateway.support.NameUtils;
+import org.springframework.context.annotation.Primary;
+import org.springframework.stereotype.Component;
+import springfox.documentation.swagger.web.SwaggerResource;
+import springfox.documentation.swagger.web.SwaggerResourcesProvider;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author lhc
+ * @version 1.0
+ * @className SwaggerProvider
+ * @date 2021年04月25日 5:00 下午
+ * @description 描述
+ */
+@Component
+@Primary
+@AllArgsConstructor
+public class SwaggerProvider implements SwaggerResourcesProvider {
+    public static final String API_URI = "/v2/api-docs";
+    private final RouteLocator routeLocator;
+    private final GatewayProperties gatewayProperties;
+
+
+    @Override
+    public List<SwaggerResource> get() {
+        List<SwaggerResource> resources = new ArrayList<>();
+        List<String> routes = new ArrayList<>();
+        //取出gateway的route
+        routeLocator.getRoutes().subscribe(route -> routes.add(route.getId()));
+        //结合配置的route-路径(Path)，和route过滤，只获取有效的route节点
+        gatewayProperties.getRoutes().stream().filter(routeDefinition -> routes.contains(routeDefinition.getId()))
+                .forEach(routeDefinition -> routeDefinition.getPredicates().stream()
+                        .filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
+                        .forEach(predicateDefinition -> resources.add(swaggerResource(routeDefinition.getId(),
+                                predicateDefinition.getArgs().get(NameUtils.GENERATED_NAME_PREFIX + "0")
+                                        .replace("/**", API_URI)))));
+        return resources;
+    }
+
+    private SwaggerResource swaggerResource(String name, String location) {
+        SwaggerResource swaggerResource = new SwaggerResource();
+        swaggerResource.setName(name);
+        swaggerResource.setLocation(location);
+        swaggerResource.setSwaggerVersion("2.0");
+        return swaggerResource;
+    }
+}