mybatisplus update null字段的策略改为允许把值改为null

src/main/resources/application.yml

@@ -59,3 +59,6 @@ gunshi:
 mybatis-plus:
   configuration:
     log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
+  global-config:
+    db-config:
+      update-strategy: always

src/test/resources/application.yml

@@ -56,3 +56,9 @@ gunshi:
         username: gunshi_logger
         password: 1234567a
 
+mybatis-plus:
+  configuration:
+    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
+  global-config:
+    db-config:
+      update-strategy: always