后端：用户登录、退出登录、获取用户状态相关功能完成；引入SessionManager；数据库：user_identity改为group；前端：添加登录页面、后台管理页面框架，axios POST请求Content-Type问题修复，引入md5、sha1 js库；小问题调整

bookshelfplus/src/main/java/plus/bookshelf/Service/Impl/UserServiceImpl.java

@@ -30,7 +30,7 @@ public class UserServiceImpl implements UserService {
         userModel.setUsername(userDO.getUsername());
         userModel.setEncriptPwd(userDO.getEncriptPwd());
         userModel.setNickname(userDO.getNickname());
-        userModel.setUserIdentity(userDO.getUserIdentity());
+        userModel.setGroup(userDO.getGroup());
         userModel.setAvatar(userDO.getAvatar());
         userModel.setPhone(userDO.getPhone());
         userModel.setWeixinThirdPartyAuthCode(userDO.getWeixinThirdPartyAuthCode());

bookshelfplus/src/main/java/plus/bookshelf/Service/Model/UserModel.java

@@ -2,6 +2,8 @@ package plus.bookshelf.Service.Model;
 
 import lombok.Data;
 
+import javax.validation.constraints.NotBlank;
+
 @Data
 public class UserModel {
 
@@ -9,6 +11,7 @@ public class UserModel {
     Integer id;
 
     // 用户名
+    @NotBlank(message = "用户名不能为空")
     String username;
 
     // 用户加密后的密码
@@ -18,7 +21,7 @@ public class UserModel {
     String nickname;
 
     // 用户身份    NOT_LOGIN, ADMIN, LOGIN_USER;
-    String userIdentity;
+    String group;
 
     // 用户头像
     String avatar;