（没成功，放弃尝试）去除注册中心 nacos；添加 Eureka；升级Spring Cloud版本为2022.0.1；JDK版本为17

backend/microservice-gateway/pom.xml

@@ -13,8 +13,8 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <maven.compiler.source>1.7</maven.compiler.source>
-        <maven.compiler.target>1.7</maven.compiler.target>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
     </properties>
 
     <dependencies>
@@ -32,17 +32,6 @@
             <groupId>org.springframework.cloud</groupId>
             <artifactId>spring-cloud-starter-loadbalancer</artifactId>
         </dependency>
-        <!-- Nacos -->
-        <dependency>
-            <groupId>com.alibaba.cloud</groupId>
-            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
-            <exclusions>
-                <exclusion>
-                    <artifactId>snakeyaml</artifactId>
-                    <groupId>org.yaml</groupId>
-                </exclusion>
-            </exclusions>
-        </dependency>
         <!-- logback -->
         <dependency>
             <groupId>ch.qos.logback</groupId>