JeecgBoot 2.3 里程碑版本发布，支持微服务和单体自由切换、提供新行编辑表格JVXETable

jeecg-boot/jeecg-cloud-module/jeecg-cloud-gateway/src/main/java/org/jeecg/JeecgGatewayApplication.java

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+package org.jeecg;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
+import org.springframework.context.ConfigurableApplicationContext;
+
+@SpringBootApplication
+@EnableDiscoveryClient
+public class JeecgGatewayApplication {
+    public static void main(String[] args) {
+        ConfigurableApplicationContext applicationContext = SpringApplication.run(JeecgGatewayApplication.class, args);
+        String userName = applicationContext.getEnvironment().getProperty("jeecg.test");
+        System.err.println("user name :" +userName);
+    }
+}

jeecg-boot/jeecg-cloud-module/jeecg-cloud-gateway/src/main/java/org/jeecg/config/GatewayRoutersConfiguration.java

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+package org.jeecg.config;
+
+import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.jeecg.handler.HystrixFallbackHandler;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.MediaType;
+import org.springframework.web.reactive.function.server.RequestPredicates;
+import org.springframework.web.reactive.function.server.RouterFunction;
+import org.springframework.web.reactive.function.server.RouterFunctions;
+
+/**
+ * @author scott
+ * @date 2020/05/26
+ * 路由配置信息
+ */
+@Slf4j
+@Configuration
+@AllArgsConstructor
+public class GatewayRoutersConfiguration {
+    private final HystrixFallbackHandler hystrixFallbackHandler;
+
+    @Bean
+    public RouterFunction routerFunction() {
+        return RouterFunctions.route(
+                RequestPredicates.path("/fallback").and(RequestPredicates.accept(MediaType.TEXT_PLAIN)), hystrixFallbackHandler);
+
+    }
+
+}

jeecg-boot/jeecg-cloud-module/jeecg-cloud-gateway/src/main/java/org/jeecg/filter/GlobalAccessTokenFilter.java

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+package org.jeecg.filter;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.cloud.gateway.filter.GatewayFilterChain;
+import org.springframework.cloud.gateway.filter.GlobalFilter;
+import org.springframework.core.Ordered;
+import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.web.server.ServerWebExchange;
+import reactor.core.publisher.Mono;
+import java.util.Arrays;
+import java.util.stream.Collectors;
+import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.GATEWAY_REQUEST_URL_ATTR;
+import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.addOriginalRequestUrl;
+
+/**
+ *
+ */
+@Slf4j
+@Component
+public class GlobalAccessTokenFilter implements GlobalFilter, Ordered {
+    public final static String X_ACCESS_TOKEN = "X-Access-Token";
+
+    @Override
+    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
+        String url = exchange.getRequest().getURI().getPath();
+
+        log.info("  access url :  "+ url);
+
+        // 1. 重写StripPrefix(获取真实的URL)
+        addOriginalRequestUrl(exchange, exchange.getRequest().getURI());
+        String rawPath = exchange.getRequest().getURI().getRawPath();
+        String newPath = "/" + Arrays.stream(StringUtils.tokenizeToStringArray(rawPath, "/")).skip(1L).collect(Collectors.joining("/"));
+        ServerHttpRequest newRequest = exchange.getRequest().mutate().path(newPath).build();
+        exchange.getAttributes().put(GATEWAY_REQUEST_URL_ATTR, newRequest.getURI());
+
+        //将现在的request，添加当前身份
+        ServerHttpRequest mutableReq = exchange.getRequest().mutate().header("Authorization-UserName", "").build();
+        ServerWebExchange mutableExchange = exchange.mutate().request(mutableReq).build();
+        return chain.filter(mutableExchange);
+    }
+
+    @Override
+    public int getOrder() {
+        return 0;
+    }
+
+}

jeecg-boot/jeecg-cloud-module/jeecg-cloud-gateway/src/main/java/org/jeecg/handler/HystrixFallbackHandler.java

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+package org.jeecg.handler;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.stereotype.Component;
+import org.springframework.web.reactive.function.BodyInserters;
+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 java.util.Optional;
+
+import static org.springframework.cloud.gateway.support.ServerWebExchangeUtils.GATEWAY_ORIGINAL_REQUEST_URL_ATTR;
+
+/**
+ * @author scott
+ * @date 2020/05/26
+ * Hystrix 降级处理
+ */
+@Slf4j
+@Component
+public class HystrixFallbackHandler implements HandlerFunction<ServerResponse> {
+    @Override
+    public Mono<ServerResponse> handle(ServerRequest serverRequest) {
+        Optional<Object> originalUris = serverRequest.attribute(GATEWAY_ORIGINAL_REQUEST_URL_ATTR);
+
+        originalUris.ifPresent(originalUri -> log.error("网关执行请求:{}失败,hystrix服务降级处理", originalUri));
+
+        return ServerResponse.status(HttpStatus.INTERNAL_SERVER_ERROR.value())
+                .header("Content-Type","text/plain; charset=utf-8").body(BodyInserters.fromObject("服务异常"));
+    }
+}

jeecg-boot/jeecg-cloud-module/jeecg-cloud-gateway/src/main/java/org/jeecg/handler/MySwaggerResourceProvider.java

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+package org.jeecg.handler;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.cloud.gateway.route.RouteLocator;
+import org.springframework.stereotype.Component;
+import springfox.documentation.swagger.web.SwaggerResource;
+import springfox.documentation.swagger.web.SwaggerResourcesProvider;
+
+import java.util.*;
+
+/**
+ * 聚合各个服务的swagger接口
+ */
+@Component
+public class MySwaggerResourceProvider implements SwaggerResourcesProvider {
+    /**
+     * swagger2默认的url后缀
+     */
+    private static final String SWAGGER2URL = "/v2/api-docs";
+
+    /**
+     * 网关路由
+     */
+    private final RouteLocator routeLocator;
+
+    /**
+     * 网关应用名称
+     */
+    @Value("${spring.application.name}")
+    private String self;
+
+    @Autowired
+    public MySwaggerResourceProvider(RouteLocator routeLocator) {
+        this.routeLocator = routeLocator;
+    }
+
+    @Override
+    public List<SwaggerResource> get() {
+        List<SwaggerResource> resources = new ArrayList<>();
+        List<String> routeHosts = new ArrayList<>();
+        // 获取所有可用的host：serviceId
+        routeLocator.getRoutes().filter(route -> route.getUri().getHost() != null)
+                .filter(route -> !self.equals(route.getUri().getHost()))
+                .subscribe(route -> routeHosts.add(route.getUri().getHost()));
+
+        // 记录已经添加过的server，存在同一个应用注册了多个服务在eureka上
+        Set<String> dealed = new HashSet<>();
+        routeHosts.forEach(instance -> {
+            // 拼接url
+            String url = "/" + instance.toLowerCase() + SWAGGER2URL;
+            if (!dealed.contains(url)) {
+                dealed.add(url);
+                SwaggerResource swaggerResource = new SwaggerResource();
+                swaggerResource.setUrl(url);
+                swaggerResource.setName(instance);
+                //Swagger排除监控
+                if(instance.indexOf("jeecg-cloud-monitor")==-1){
+                    resources.add(swaggerResource);
+                }
+            }
+        });
+        return resources;
+    }
+}

jeecg-boot/jeecg-cloud-module/jeecg-cloud-gateway/src/main/java/org/jeecg/handler/SwaggerResourceController.java

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+package org.jeecg.handler;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import springfox.documentation.swagger.web.*;
+
+import java.util.List;
+
+/**
+ * swagger聚合接口，三个接口都是 doc.html需要访问的接口
+ */
+@RestController
+@RequestMapping("/swagger-resources")
+public class SwaggerResourceController {
+    private MySwaggerResourceProvider swaggerResourceProvider;
+
+    @Autowired
+    public SwaggerResourceController(MySwaggerResourceProvider swaggerResourceProvider) {
+        this.swaggerResourceProvider = swaggerResourceProvider;
+    }
+
+    @RequestMapping(value = "/configuration/security")
+    public ResponseEntity<SecurityConfiguration> securityConfiguration() {
+        return new ResponseEntity<>(SecurityConfigurationBuilder.builder().build(), HttpStatus.OK);
+    }
+
+    @RequestMapping(value = "/configuration/ui")
+    public ResponseEntity<UiConfiguration> uiConfiguration() {
+        return new ResponseEntity<>(UiConfigurationBuilder.builder().build(), HttpStatus.OK);
+    }
+
+    @RequestMapping
+    public ResponseEntity<List<SwaggerResource>> swaggerResources() {
+        return new ResponseEntity<>(swaggerResourceProvider.get(), HttpStatus.OK);
+    }
+}