降低依赖版本.

build.gradle

@@ -12,8 +12,8 @@ ext {
 
     libraries = [
         mybatisVersion = '3.5.13',
-        mybatisSpringVersion = '3.0.2',
-        mybatisSpringBootStarterVersion = '3.0.2',
+        mybatisSpringVersion = '2.1.1',
+        mybatisSpringBootStarterVersion = '2.3.1',
         springVersion = '5.3.15',
         springBootVersion = '2.5.3',
         springCloudVersion = '3.1.1',