Merge pull request #105 from voilaf/develop

配置文件未设置server.port时，DiscoveryConfiguration默认选择8080端口

hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/starter/config/DiscoveryConfiguration.java

@@ -39,7 +39,7 @@ public class DiscoveryConfiguration {
     public InstanceInfo instanceConfig() {
         String namespace = properties.getNamespace();
         String itemId = properties.getItemId();
-        String port = environment.getProperty("server.port");
+        String port = environment.getProperty("server.port", "8080");
         String applicationName = environment.getProperty("spring.dynamic.thread-pool.item-id");
         String active = environment.getProperty("spring.profiles.active", "UNKNOWN");
 

hippo4j-spring-boot-starter/src/main/java/cn/hippo4j/starter/toolkit/IdentifyUtil.java

@@ -37,7 +37,7 @@ public class IdentifyUtil {
             return identify;
         }
         String ip = hippo4JInetUtils.findFirstNonLoopbackHostInfo().getIpAddress();
-        String port = environment.getProperty("server.port");
+        String port = environment.getProperty("server.port", "8080");
         String identification = StrUtil.builder(ip,
                 ":",
                 port,