增加网关跨域处理

src/main/java/com/sczx/gateway/GatewayApplication.java

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+package com.sczx.gateway;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GatewayApplication {
+    public static void main(String[] args) {
+        SpringApplication.run(GatewayApplication.class, args);
+    }
+}

src/main/java/com/sczx/gateway/filter/AuthGlobalFilter.java

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+package com.sczx.gateway.filter;
+
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.cloud.gateway.filter.GlobalFilter;
+import org.springframework.cloud.gateway.filter.GatewayFilterChain;
+import org.springframework.core.Ordered;
+import org.springframework.http.HttpStatus;
+import org.springframework.stereotype.Component;
+import org.springframework.web.server.ServerWebExchange;
+import reactor.core.publisher.Mono;
+
+@Component
+@Slf4j
+public class AuthGlobalFilter implements GlobalFilter, Ordered {
+
+    @Override
+    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
+        String path = exchange.getRequest().getPath().value();
+        log.info("🌐 请求路径: {}", path);
+
+        // 示例：拦截所有请求，校验 token
+//        String token = exchange.getRequest().getHeaders().getFirst("Authorization");
+//        if (token == null || !token.startsWith("Bearer ")) {
+//            exchange.getResponse().setStatusCode(HttpStatus.UNAUTHORIZED);
+//            return exchange.getResponse().setComplete();
+//        }
+
+        return chain.filter(exchange);
+    }
+
+    @Override
+    public int getOrder() {
+        return 0; // 执行顺序
+    }
+}

src/main/java/com/sczx/gateway/filter/CorsGlobalFilter.java

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+package com.sczx.gateway.filter;
+
+import org.springframework.cloud.gateway.filter.GatewayFilterChain;
+import org.springframework.cloud.gateway.filter.GlobalFilter;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.server.ServerWebExchange;
+import reactor.core.publisher.Mono;
+
+@Configuration
+public class CorsGlobalFilter implements GlobalFilter {
+
+    @Override
+    public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) {
+        HttpHeaders headers = exchange.getRequest().getHeaders();
+        // 判断是否为跨域请求
+        if (headers.containsKey("Origin")) {
+            HttpHeaders responseHeaders = exchange.getResponse().getHeaders();
+            responseHeaders.add("Access-Control-Allow-Origin", "*");
+            responseHeaders.add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
+            responseHeaders.add("Access-Control-Allow-Headers", "*");
+            responseHeaders.add("Access-Control-Allow-Credentials", "true");
+            responseHeaders.add("Access-Control-Max-Age", "3600");
+            responseHeaders.add("Access-Control-Expose-Headers", "*");
+        }
+        // 如果是 OPTIONS 预检请求，直接返回 200
+        if ("OPTIONS".equalsIgnoreCase(exchange.getRequest().getMethodValue())) {
+            exchange.getResponse().setStatusCode(HttpStatus.OK);
+            return exchange.getResponse().setComplete();
+        }
+        return chain.filter(exchange);
+    }
+}