网关接入新的 Knife4j 版本

yudao-dependencies/pom.xml

@@ -233,6 +233,11 @@
                 <artifactId>knife4j-openapi3-spring-boot-starter</artifactId>
                 <version>${knife4j.version}</version>
             </dependency>
+            <dependency>
+                <groupId>com.github.xiaoymin</groupId> <!-- 接口文档 UI：knife4j【网关专属】 -->
+                <artifactId>knife4j-gateway-spring-boot-starter</artifactId>
+                <version>${knife4j.version}</version>
+            </dependency>
 
             <!-- DB 相关 -->
             <dependency>

yudao-gateway/pom.xml

@@ -58,8 +58,7 @@
 
         <dependency>
             <groupId>com.github.xiaoymin</groupId> <!-- 接口文档 -->
-            <artifactId>knife4j-spring-boot-starter</artifactId>
-            <version>3.0.3</version>
+            <artifactId>knife4j-gateway-spring-boot-starter</artifactId>
         </dependency>
 
         <!-- RPC 远程调用相关 -->
@@ -85,7 +84,6 @@
             <groupId>cn.iocoder.cloud</groupId>
             <artifactId>yudao-spring-boot-starter-monitor</artifactId>
         </dependency>
-
     </dependencies>
 
 

yudao-gateway/src/main/java/cn/iocoder/yudao/gateway/swagger/SwaggerHandler.java

-package cn.iocoder.yudao.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 javax.annotation.Resource;
-import java.util.List;
-import java.util.Optional;
-
-/**
- * Swagger Controller
- *
- * @author zxliu
- * @date 2022-10-25 11:24
- */
-@RestController
-@RequestMapping("/swagger-resources")
-public class SwaggerHandler {
-
-    @Resource
-    private SwaggerResourcesProvider swaggerResources;
-
-    @SuppressWarnings("SpringJavaAutowiredFieldsWarningInspection") // 只有 @Autowired 可以实现可选注入
-    @Autowired(required = false)
-    private SecurityConfiguration securityConfiguration;
-    @SuppressWarnings("SpringJavaAutowiredFieldsWarningInspection") // 只有 @Autowired 可以实现可选注入
-    @Autowired(required = false)
-    private UiConfiguration uiConfiguration;
-
-    @GetMapping("")
-    public Mono<ResponseEntity<List<SwaggerResource>>> swaggerResources() {
-        return Mono.just((new ResponseEntity<>(swaggerResources.get(), HttpStatus.OK)));
-    }
-
-    @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));
-    }
-
-}

yudao-gateway/src/main/java/cn/iocoder/yudao/gateway/swagger/SwaggerProvider.java → yudao-gateway/src/main/java/cn/iocoder/yudao/gateway/swagger/SwaggerResourceHandlerFunction.java

@@ -2,45 +2,49 @@ package cn.iocoder.yudao.gateway.swagger;
 
 import cn.hutool.core.collection.CollUtil;
 import cn.hutool.core.util.StrUtil;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.cloud.gateway.config.GatewayProperties;
 import org.springframework.cloud.gateway.handler.predicate.PredicateDefinition;
 import org.springframework.cloud.gateway.route.RouteDefinition;
 import org.springframework.cloud.gateway.support.NameUtils;
-import org.springframework.context.annotation.Primary;
+import org.springframework.http.MediaType;
 import org.springframework.stereotype.Component;
-import springfox.documentation.swagger.web.SwaggerResource;
-import springfox.documentation.swagger.web.SwaggerResourcesProvider;
+import org.springframework.web.reactive.function.server.HandlerFunction;
+import org.springframework.web.reactive.function.server.ServerRequest;
+import org.springframework.web.reactive.function.server.ServerResponse;
+import reactor.core.publisher.Mono;
 
 import javax.annotation.Resource;
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
+import java.util.*;
 
 /**
- * Swagger 资源的 Provider 实现类
+ * 获得 Swagger 资源的 {@link HandlerFunction} 实现类
  *
  * @author zxliu
  * @since 2022-10-25 11:23
  */
-@Component
-@Primary
+@RequiredArgsConstructor
 @Slf4j
-public class SwaggerProvider implements SwaggerResourcesProvider {
+public class SwaggerResourceHandlerFunction implements HandlerFunction<ServerResponse> {
 
-    @Resource
-    private GatewayProperties gatewayProperties;
+    private final GatewayProperties gatewayProperties;
+
+    @Override
+    public Mono<ServerResponse> handle(ServerRequest request) {
+        return ServerResponse.ok()
+                .contentType(MediaType.APPLICATION_JSON)
+                .bodyValue(getSwaggerResourceList());
+    }
 
     /**
      * 获得 SwaggerResource 列表
      *
      * @return SwaggerResource 列表
      */
-    @Override
-    public List<SwaggerResource> get() {
+    public List<Map<String, String>> getSwaggerResourceList() {
         // 将 RouteDefinition 转换成 SwaggerResource
-        List<SwaggerResource> resources = new ArrayList<>();
+        List<Map<String, String>> resources = new ArrayList<>();
         Set<String> serviceNames = new HashSet<>(); // 已处理的服务名，避免重复
         gatewayProperties.getRoutes().forEach(route -> {
             // 已存在的服务，直接忽略
@@ -64,11 +68,12 @@ public class SwaggerProvider implements SwaggerResourcesProvider {
         return resources;
     }
 
-    private SwaggerResource buildSwaggerResource(String name, String location) {
-        SwaggerResource swaggerResource = new SwaggerResource();
-        swaggerResource.setName(name);
-        swaggerResource.setLocation(location);
-        swaggerResource.setSwaggerVersion("3.0.3");
+    private Map<String, String> buildSwaggerResource(String name, String location) {
+        Map<String, String> swaggerResource = new HashMap<>();
+        swaggerResource.put("name", name);
+        swaggerResource.put("location", location);
+        swaggerResource.put("url", location);
+        swaggerResource.put("swaggerVersion", "3.0.3");
         return swaggerResource;
     }
 

yudao-gateway/src/main/java/cn/iocoder/yudao/gateway/swagger/YudaoSwaggerAutoConfiguration.java

+package cn.iocoder.yudao.gateway.swagger;
+
+import com.github.xiaoymin.knife4j.spring.gateway.configuration.Knife4jGatewayAutoConfiguration;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.cloud.gateway.config.GatewayProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.reactive.function.server.RouterFunction;
+import org.springframework.web.reactive.function.server.RouterFunctions;
+import org.springframework.web.reactive.function.server.ServerResponse;
+
+/**
+ * 网关 Swagger 接口文档的自动配置类
+ *
+ * 参考 {@link Knife4jGatewayAutoConfiguration} 实现，进行功能的增强，核心实现在 {@link SwaggerResourceHandlerFunction} 类中
+ * 它通过解析 spring.cloud.gateway.routes 配置，获得 Swagger 资源分组。
+ *
+ * 另外，目前官方 Knif4j 网关的实现，不会通过注册中心加载对应的 URL 地址。等到他们完善了，就可以去掉自己的这个实现了。
+ *
+ * @see <a href="https://doc.xiaominfo.com/docs/middleware-sources/spring-cloud-gateway/spring-gateway-introduction">Knife4j + Spring Cloud Gateway 网关聚合</a>
+ *
+ * @author 芋道源码
+ */
+@Configuration
+@ConditionalOnProperty(name = "knife4j.gateway.enable", havingValue = "true")
+@Slf4j
+public class YudaoSwaggerAutoConfiguration {
+
+    /**
+     * Swagger 资源分组 URL
+     */
+    public static final String GATEWAY_SWAGGER_GROUP_URL = "/swagger-resources";
+
+    @Bean
+    public RouterFunction<ServerResponse> swaggerResourceHandlerFunction(GatewayProperties gatewayProperties) {
+        log.info("[swaggerResourceHandlerFunction][初始化完成]");
+        SwaggerResourceHandlerFunction handlerFunction = new SwaggerResourceHandlerFunction(gatewayProperties);
+        return RouterFunctions.route().GET(GATEWAY_SWAGGER_GROUP_URL, handlerFunction).build();
+    }
+
+}

yudao-gateway/src/main/resources/application.yaml

@@ -49,3 +49,8 @@ spring:
             - Path=/jmreport/**
       x-forwarded:
         prefix-enabled: false # 避免 Swagger 重复带上额外的 /admin-api/system 前缀
+
+knife4j:
+  # 聚合 Swagger 文档
+  gateway:
+    enable: true