使用事务控制业务逻辑的完整性

Chapter3-3-1/src/main/java/com/didispace/service/UserService.java

@@ -0,0 +1,15 @@
+package com.didispace.service;
+
+import com.didispace.domain.User;
+
+import javax.transaction.Transactional;
+
+/**
+ * Created by Administrator on 2016/5/27.
+ */
+public interface UserService {
+
+    @Transactional
+    User login(String name, String password);
+
+}