diff --git a/java/src/main/java/com/hzu/bookingsystem/bean/UserAuthBean.java b/java/src/main/java/com/hzu/bookingsystem/bean/UserAuthBean.java
new file mode 100644
index 0000000..a8a91f0
--- /dev/null
+++ b/java/src/main/java/com/hzu/bookingsystem/bean/UserAuthBean.java
@@ -0,0 +1,25 @@
+package com.hzu.bookingsystem.bean;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.persistence.Entity;
+import javax.persistence.Id;
+import javax.persistence.Table;
+
+/**
+ * author 吴志岳
+ */
+
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+@Entity
+@Table(name = "tb_auth_group_access")
+public class UserAuthBean {
+    @Id
+    private Integer uId;
+
+    private Integer groupId;
+}
diff --git a/java/src/main/java/com/hzu/bookingsystem/repository/UserAuthRepository.java b/java/src/main/java/com/hzu/bookingsystem/repository/UserAuthRepository.java
new file mode 100644
index 0000000..896d05d
--- /dev/null
+++ b/java/src/main/java/com/hzu/bookingsystem/repository/UserAuthRepository.java
@@ -0,0 +1,12 @@
+package com.hzu.bookingsystem.repository;
+
+
+import com.hzu.bookingsystem.bean.UserAuthBean;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * author 吴志岳
+ */
+public interface UserAuthRepository extends JpaRepository<UserAuthBean,String> {
+    UserAuthBean findByUId(Integer uId);
+}
diff --git a/java/src/main/java/com/hzu/bookingsystem/service/UserAuthService.java b/java/src/main/java/com/hzu/bookingsystem/service/UserAuthService.java
new file mode 100644
index 0000000..4cf4cc4
--- /dev/null
+++ b/java/src/main/java/com/hzu/bookingsystem/service/UserAuthService.java
@@ -0,0 +1,13 @@
+package com.hzu.bookingsystem.service;
+
+import com.hzu.bookingsystem.bean.UserAuthBean;
+
+public interface UserAuthService {
+    UserAuthBean add(Integer uId, Integer groupId);
+
+    UserAuthBean update(Integer uId, Integer groupId);
+
+    void delete(Integer uId, Integer groupId);
+
+    UserAuthBean findByUId(Integer uId);
+}
diff --git a/java/src/main/java/com/hzu/bookingsystem/service/impl/UserAuthServiceImpl.java b/java/src/main/java/com/hzu/bookingsystem/service/impl/UserAuthServiceImpl.java
new file mode 100644
index 0000000..1505a4f
--- /dev/null
+++ b/java/src/main/java/com/hzu/bookingsystem/service/impl/UserAuthServiceImpl.java
@@ -0,0 +1,36 @@
+package com.hzu.bookingsystem.service.impl;
+
+import com.hzu.bookingsystem.bean.UserAuthBean;
+import com.hzu.bookingsystem.repository.UserAuthRepository;
+import com.hzu.bookingsystem.service.UserAuthService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class UserAuthServiceImpl implements UserAuthService {
+    @Autowired
+    private UserAuthRepository userAuthRepository;
+
+    @Override
+    public UserAuthBean add(Integer uId, Integer groupId) {
+        UserAuthBean userAuth = new UserAuthBean(uId,groupId);
+        return userAuthRepository.save(userAuth);
+    }
+
+    @Override
+    public UserAuthBean update(Integer uId, Integer groupId) {
+        UserAuthBean userAuth = new UserAuthBean(uId,groupId);
+        return userAuthRepository.save(userAuth);
+    }
+
+    @Override
+    public void delete(Integer uId, Integer groupId) {
+        UserAuthBean userAuth = new UserAuthBean(uId,groupId);
+        userAuthRepository.delete(userAuth);
+    }
+
+    @Override
+    public UserAuthBean findByUId(Integer uId) {
+        return userAuthRepository.findByUId(uId);
+    }
+}