!91 fix: 不配置全局设置时发生 NPE 问题。

Merge pull request !91 from 王帅/main

mybatis-flex-spring-boot-starter/src/main/java/com/mybatisflex/spring/boot/MybatisFlexAutoConfiguration.java

@@ -133,7 +133,9 @@ public class MybatisFlexAutoConfiguration implements InitializingBean {
         // 检测 MyBatis 原生配置文件是否存在
         checkConfigFileExists();
         // 添加 MyBatis-Flex 全局配置
-        this.properties.getGlobalConfig().applyTo(FlexGlobalConfig.getDefaultConfig());
+        if (properties.getGlobalConfig() != null) {
+            properties.getGlobalConfig().applyTo(FlexGlobalConfig.getDefaultConfig());
+        }
     }
 
     private void checkConfigFileExists() {

mybatis-flex-test/mybatis-flex-spring-boot-test/src/main/resources/application.yml

@@ -16,13 +16,13 @@ spring:
 mybatis-flex:
   mapper-locations:
     - classpath*:/mapper/*.xml
-  global-config:
-    print-banner: false
-    key-config:
-      key-type: generator
-      value: uuid
-  configuration:
-    use-generated-keys: true
+#  global-config:
+#    print-banner: false
+#    key-config:
+#      key-type: generator
+#      value: uuid
+#  configuration:
+#    use-generated-keys: true
 #  datasource:
 #    data-center:
 #      url: jdbc:mysql://localhost:3306/flex_test