gateway集成Knife4j

yudao-gateway/pom.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>yudao</artifactId>
         <groupId>cn.iocoder.cloud</groupId>
@@ -62,8 +62,23 @@
             <groupId>cn.iocoder.cloud</groupId>
             <artifactId>yudao-spring-boot-starter-monitor</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>com.github.xiaoymin</groupId>
+            <artifactId>knife4j-spring-boot-starter</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.swagger</groupId>
+            <artifactId>swagger-annotations</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.springfox</groupId>
+            <artifactId>springfox-boot-starter</artifactId>
+            <version>3.0.0</version>
+        </dependency>
     </dependencies>
 
+
     <build>
         <!-- 设置构建的 jar 包名 -->
         <finalName>${project.artifactId}</finalName>

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

+package cn.iocoder.yudao.gateway.swagger;
+
+
+import java.util.Optional;
+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.SecurityConfiguration;
+import springfox.documentation.swagger.web.SecurityConfigurationBuilder;
+import springfox.documentation.swagger.web.SwaggerResourcesProvider;
+import springfox.documentation.swagger.web.UiConfiguration;
+import springfox.documentation.swagger.web.UiConfigurationBuilder;
+
+/**
+ * @author zxliu
+ * @create 2022-10-25 11:24
+ */
+
+@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));
+    }
+
+
+    @SuppressWarnings("rawtypes")
+    @GetMapping("")
+    public Mono<ResponseEntity> swaggerResources() {
+        return Mono.just((new ResponseEntity<>(swaggerResources.get(), HttpStatus.OK)));
+    }
+
+}

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

+package cn.iocoder.yudao.gateway.swagger;
+
+import java.util.ArrayList;
+import java.util.List;
+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;
+
+/**
+ * @author zxliu
+ * @create 2022-10-25 11:23
+ */
+
+@Component
+@Primary
+@AllArgsConstructor
+public class SwaggerProvider implements SwaggerResourcesProvider {
+
+    private final RouteLocator routeLocator;
+    private final GatewayProperties gatewayProperties;
+
+
+    @Override
+    public List<SwaggerResource> get() {
+        List<SwaggerResource> resources = new ArrayList<>();
+        List<String> routes = new ArrayList<>();
+        routeLocator.getRoutes().subscribe(route -> routes.add(route.getId()));
+        gatewayProperties.getRoutes().stream().filter(routeDefinition -> routes.contains(routeDefinition.getId()))
+                .forEach(route -> route.getPredicates().stream()
+                        .filter(predicateDefinition -> ("Path").equalsIgnoreCase(predicateDefinition.getName()))
+                        .forEach(predicateDefinition -> resources.add(swaggerResource(route.getId(),
+                                predicateDefinition.getArgs().get(NameUtils.GENERATED_NAME_PREFIX + "0")
+                                        .replace("**", "v2/api-docs"))))
+                );
+
+        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;
+    }
+
+}

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

@@ -5,25 +5,41 @@ spring:
   cloud:
     # Spring Cloud Gateway 配置项，对应 GatewayProperties 类
     gateway:
+      discovery:
+        locator:
+          # gateway开启服务注册和发现的功能，
+          enabled: true
+          # 将请求路径上的服务名配置为小写（因为服务注册的时候，向注册中心注册时将服务名转成大写的了）
+          lowerCaseServiceId: true
       # 路由配置项，对应 RouteDefinition 数组
       routes:
         - id: system-admin-api # 路由的编号
           uri: grayLb://system-server
           predicates: # 断言，作为路由的匹配条件，对应 RouteDefinition 数组
             - Path=/admin-api/system/**
+          filters:
+              - RewritePath=/admin-api/system/v2/api-docs, /v2/api-docs
         - id: system-app-api # 路由的编号
           uri: grayLb://system-server
           predicates: # 断言，作为路由的匹配条件，对应 RouteDefinition 数组
             - Path=/app-api/system/**
+          filters:
+              - RewritePath=/app-api/system/v2/api-docs, /v2/api-docs
         - id: infra-admin-api # 路由的编号
           uri: grayLb://infra-server
           predicates: # 断言，作为路由的匹配条件，对应 RouteDefinition 数组
             - Path=/admin-api/infra/**
+          filters:
+              - RewritePath=/admin-api/infram/v2/api-docs, /v2/api-docs
         - id: infra-app-api # 路由的编号
           uri: grayLb://infra-server
           predicates: # 断言，作为路由的匹配条件，对应 RouteDefinition 数组
             - Path=/app-api/infra/**
+          filters:
+              - RewritePath=/app-api/infra/v2/api-docs, /v2/api-docs
         - id: bpm-admin-api # 路由的编号
           uri: grayLb://bpm-server
           predicates: # 断言，作为路由的匹配条件，对应 RouteDefinition 数组
             - Path=/admin-api/bpm/**
+          filters:
+              - RewritePath=/admin-api/bpm/v2/api-docs, /v2/api-docs