fix ServiceNameInput validation.

Author: wangmingliang-ms

PluginsAndFeatures/azure-toolkit-for-intellij/azure-intellij-plugin-springcloud/src/main/java/com/microsoft/azure/toolkit/intellij/springcloud/component/ServiceNameInput.java

@@ -46,9 +46,11 @@ public AzureValidationInfo doValidateValue() {
                 if (!name.matches(NAME_REGEX)) {
                     throw new IllegalArgumentException("It can contain only lowercase letters, numbers and hyphens and the first character must be a letter but the last character can be a letter or number.");
                 }
-                final NameAvailability result = Azure.az(AzureSpringCloud.class).forSubscription(this.subscription.getId()).checkNameAvailability(this.region, name);
-                if (!result.nameAvailable()) {
-                    throw new IllegalArgumentException(result.reason());
+                if (Objects.nonNull(this.subscription) && Objects.nonNull(this.region)) {
+                    final NameAvailability result = Azure.az(AzureSpringCloud.class).forSubscription(this.subscription.getId()).checkNameAvailability(this.region, name);
+                    if (!result.nameAvailable()) {
+                        throw new IllegalArgumentException(result.reason());
+                    }
                 }
             } catch (final IllegalArgumentException e) {
                 return AzureValidationInfo.error(e.getMessage(), this);

Utils/azure-toolkit-ide-libs/azure-toolkit-ide-common-lib/src/main/resources/bundles/com/microsoft/azure/toolkit/operation.properties

@@ -208,6 +208,7 @@ azure/function.trigger_function.func=treat function ({0})
 azure/springcloud.enable_remote_debugging.deployment=enable remote debugging of deployment ({0})
 azure/springcloud.disable_remote_debugging.deployment=disable remote debugging of deployment ({0})
 azure/springcloud.scale_app_instances.deployment=scaling instances of deployment ({0})
+azure/springcloud.check_name.name=validate name ({0}) of new Spring Apps
 ######################end other request operations######################
 ######################start create/update request operations######################
 azure/ai.create_ai.ai=create Application Insights ({0})