存放日常开发所撰写的Markdown文件。
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项目开发流程、结构及知识


项目架构:

demo-api:为后端与后端交互而提供的接口服务。【为服务层和通用处理层提供的接口。】

demo-dao:后端与数据库直接交互的地方。【数据持久层】

demo-manager:代码管理层。【通用处理层:处理三方平台和三方平台的接口】

demo-service:复杂业务层。

demo-web:为前端提供接口。【这里从某种角度,就是图中的开放接口】

start:启动和测试使用。

项目主提结构:【根据阿里巴巴项目目录结构所分析的图形化】

项目目录结构图形化


用户角色设计

采用分层权限模型,来对公司各职务权限和人员进行管理。

如下所示:

分层设计表

user 对应 用户

role 对应 角色

permission 对应 权限

通过两个关联表来实现分层权限。【分别为:user_role、role_permission】

对于权限,我们将其分为操作权限,和访问权限。分别对应为:menu、operation。

对于访问权限和操作权限的表跟权限表,我采用两个表分别进行关联起来。【menu_permission、operation_permission】

这样就可以更详细的描述公司人员之间的关系了。


前后分离思路

这里的需要注意的是,token的作用是给系统系别你这账号的权限的。cookie则是自己设置系统是否开启cookie的功能的。如果开启,浏览器就会生成一个cookie给用户,让用户下次登录就不用再次输入账号密码之类的操作。

在做前后分离时,首先要考虑自己的所提供给前端,应该是按照什么格式去反馈。

即请求体和响应体的格式,不同开发人员所定义的请求结构是不同的。所以要找到适合自己习惯的。

下面是自己所觉得合理的请求、响应体:

{// 登录响应
    "code": 200,
    "msg": "",
    "data": null,
    "token": null
}

{//请求体
    "token": null,
    "data": {
        ....
    }
}

实现的流程1 :

实现流程

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Spring boot 事务操作

注意事项

  1. 同一个类中方法调用,导致@Transactional失效 开发中避免不了会对同一个类里面的方法调用,比如有一个类Test,它的一个方法A,A再调用本类的方法B(不论方法B是用public还是private修饰),但方法A没有声明注解事务,而B方法有。则外部调用方法A之后,方法B的事务是不会起作用的。这也是经常犯错误的一个地方。 那为啥会出现这种情况?其实这还是由于使用Spring AOP代理造成的,因为只有当事务方法被当前类以外的代码调用时,才会由Spring生成的代理对象来管理。 ———————————————— 版权声明:本文为CSDN博主「丶炜钦」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。 原文链接:https://blog.csdn.net/weixin_44521690/article/details/116797363

这里该怎么做?

数据库的设计测试案例及方案


create database test;
use test;
# 用户
create table users(
    id int primary key auto_increment, # 自动递增主键
    name varchar(244),
    password varchar(244),
    rolesid int, # 外键 关联角色的ID
    createdate timestamp,
    updatedate timestamp
) character set = UTF8MB4;
# 角色
create table roles(
    id int not null default 0 , # 主键 默认0
    name varchar(30),
    permissionid int not null auto_increment, # 非主键 约束唯一索引 自动递增 并 外键 关联 permission 的ID
    createdate timestamp,
    updatedate timestamp,
    primary key (`id`),
    unique key (`permissionid`)
)character set = UTF8MB4;
# 权限表
create table permission(
    id int primary key auto_increment, # 自动递增主键
    rolesid int,
    name varchar(20),
    operationid int, # 外键 关联operation的ID
    createdate timestamp,
    updatedate timestamp
)character set = UTF8MB4;
# menu操作权限访问模块表
create table operation(
    id int primary key , # 主键 非自动递增
    name varchar(20),
    url varchar(20),
    createdate timestamp,
    updatedate timestamp
)character set = UTF8MB4;

# 用户---角色的外键
alter table users add constraint ur foreign key (rolesid) references roles(id);
# 角色---权限 & 权限---menu访问模块 的外键。
alter table permission add constraint pr foreign key (rolesid) references roles(id);
alter table permission add constraint op foreign key (operationid) references operation(id);

alter table permission drop foreign key op;
alter table users drop foreign key ur;

drop table users;
drop table roles;
drop table permission;

# 用户
insert into users (name,password,rolesid,createdate,updatedate) VALUES ('123333','vip2333','1',now(),now());
insert into users (name,password,rolesid,createdate,updatedate) VALUES ('123343','vip2343','2',now(),now());
insert into users (name,password,rolesid,createdate,updatedate) VALUES ('123353','vip2353','3',now(),now());
# 角色
insert into roles (id, name, createdate, updatedate) VALUES ('1','admin1',now(),now());
insert into roles (id, name, createdate, updatedate) VALUES ('2','admin2',now(),now());
insert into roles (id, name, createdate, updatedate) VALUES ('3','admin3',now(),now());
insert into roles (id, name, createdate, updatedate) VALUES ('4','admin4',now(),now());
# 权限
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','add','1',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','delete','1',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','select','1',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','updata','1',now(),now());

insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','add','191',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','delete','191',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','select','191',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','updata','191',now(),now());

insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','add','1101',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','delete','1101',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','select','1101',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','updata','1101',now(),now());

insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','add','1111',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','delete','1111',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','select','1111',now(),now());
insert into permission (rolesid, name,operationid, createdate, updatedate) VALUES ('3','updata','1111',now(),now());



# 菜单功能访问模块
# 设置menu 1 【】
insert into operation (id, name, url, createdate, updatedate) VALUES ('1','个人信息','/me',now(),now());

# insert into operation (id, name, url, createdate, updatedate) VALUES ('21','部门管理','/index/work',now(),now());
# insert into operation (id, name, url, createdate, updatedate) VALUES ('31','人员管理','/index/people',now(),now());
# insert into operation (id, name, url, createdate, updatedate) VALUES ('41','资产类别','/index/assettype',now(),now());
# insert into operation (id, name, url, createdate, updatedate) VALUES ('51','品牌','/index/brand',now(),now());
# insert into operation (id, name, url, createdate, updatedate) VALUES ('61','取得方式','/index/method',now(),now());
# insert into operation (id, name, url, createdate, updatedate) VALUES ('71','供应商','/index/vendor',now(),now());
# insert into operation (id, name, url, createdate, updatedate) VALUES ('81','存放地点','/index/address',now(),now());
# insert into operation (id, name, url, createdate, updatedate) VALUES ('91','设备用途','/index/driver',now(),now());
# insert into operation (id, name, url, createdate, updatedate) VALUES ('11','报废方式','/index/repair',now(),now());

insert into operation (id, name, url, createdate, updatedate) VALUES ('111','资产申购','/:user/by',now(),now());
insert into operation (id, name, url, createdate, updatedate) VALUES ('121','资产入库','/:user/input',now(),now());
insert into operation (id, name, url, createdate, updatedate) VALUES ('131','资产信息维护','/:user/edit',now(),now());
insert into operation (id, name, url, createdate, updatedate) VALUES ('141','资产借还','/:user/debit',now(),now());
insert into operation (id, name, url, createdate, updatedate) VALUES ('151','资产转移','/:user/Transfer',now(),now());
insert into operation (id, name, url, createdate, updatedate) VALUES ('161','资产维修','/:user/fix',now(),now());
insert into operation (id, name, url, createdate, updatedate) VALUES ('171','资产报废','/:user/repair',now(),now());
insert into operation (id, name, url, createdate, updatedate) VALUES ('181','资产盘点','/:user/Inventory',now(),now());

insert into operation (id, name, url, createdate, updatedate) VALUES ('191','资产查询统计','/:user/Query',now(),now());

insert into operation (id, name, url, createdate, updatedate) VALUES ('1101','资产申购审批','/:user/Approval/by',now(),now());
insert into operation (id, name, url, createdate, updatedate) VALUES ('1111','资产报废审批','/:user/Approval/repair',now(),now());


select * from users;
select * from roles;
select * from operation;
select * from permission;

# 通过角色去查询权限。
select distinct u.name,o.id,o.url from users as u
    left join roles as r on u.rolesid = r.id
    left join permission p on u.rolesid = p.rolesid
    right join operation o on p.operationid = o.id
where u.name = 123353;
# 结果:1 = 40 = admin1 ;2 = 80 = admin2 ;3 = 32 = admin3;
# 过滤用户名,权限:四种权限的operation

# 角色添加?
# 用户授权?
# 超级用户:拥有对整个系统的权限角色分配,功能分配有着绝对的操作。并且可对所存在的公司员工进行查询。

在设计数据库中的时候,对于公司类型的管理系统,我们可以通过分层权限结构来对其人员权限进行设计,这样才更贴近公司层级。