go语言web开发系列之十一:gin框架通过casbin实现rbac权限设计(csv存储)

go语言web开发系列之十一:gin框架通过casbin实现rbac权限设计(csv存储)
一，安装casbin

1,casbin项目代码的地址

https://github.com/casbin/casbin

2,为go安装casbin
```
liuhongdi@ku:~$ go get -u github.com/casbin/casbin/v2
```
说明：刘宏缔的go森林是一个专注golang的博客，
地址：https://blog.csdn.net/weixin_43881017

说明：作者:刘宏缔邮箱: 371125307@qq.com

二，演示项目的相关信息

1，项目地址

https://github.com/liuhongdi/digv11

2,项目功能说明：

/admin/* :只有role为 superAdmin时可访问

/article/* : role为superAdmin/user时均可访问

/home/*: role为任何用户时均可访问

3，项目结构：如图:

三，配置文件说明:

1,config/rbac_model.conf
1. # Request definition 自定义请求的格式
2. [request_definition]
3. r = sub, obj, act
5. # Policy definition 策略定义
6. [policy_definition]
7. p = sub, obj, act
9. # Policy effect
10. [policy_effect]
11. e = some(where (p.eft == allow))
13. # Matchers
14. [matchers]
15. #m = r.sub == p.sub && r.obj == p.obj && r.act == p.act
16. m = (r.sub == p.sub || p.sub == "*") && keyMatch(r.obj,p.obj) && (r.act == p.act || p.act == "*")
2,rbac2.csv
1. p,superAdmin,/article/*,*
2. p,superAdmin,/admin/*,*
3. p,*,/home/*,*
4. p,user,/article/*,*
说明：csv文件必须用相应的软件生成,如图:

四，go代码说明

1,homeController.go
1. package controller
3. import (
4. "github.com/gin-gonic/gin"
5. "github.com/liuhongdi/digv11/pkg/result"
6. )
8. type HomeController struct{}
10. func NewHomeController() HomeController {
11. return HomeController{}
12. }
13. //首页，任何人可访问，不登录也可访问
14. func (a *HomeController) Home(c *gin.Context) {
15. resultRes := result.NewResult(c)
16. resultRes.Success("this is home page");
17. return
18. }
2,adminController.go
1. package controller
3. import (
4. "github.com/gin-gonic/gin"
5. "github.com/liuhongdi/digv11/pkg/result"
6. )
8. type HomeController struct{}
10. func NewHomeController() HomeController {
11. return HomeController{}
12. }
13. //首页，任何人可访问，不登录也可访问
14. func (a *HomeController) Home(c *gin.Context) {
15. resultRes := result.NewResult(c)
16. resultRes.Success("this is home page");
17. return
18. }
3,ArticleController.go
1. package controller
3. import (
4. "fmt"
5. "github.com/gin-gonic/gin"
6. "github.com/liuhongdi/digv11/pkg/page"
7. "github.com/liuhongdi/digv11/pkg/result"
8. "github.com/liuhongdi/digv11/pkg/validCheck"
9. "github.com/liuhongdi/digv11/request"
10. "github.com/liuhongdi/digv11/service"
11. )
13. type ArticleController struct{}
15. func NewArticleController() ArticleController {
16. return ArticleController{}
17. }
18. //得到一篇文章的详情
19. func (a *ArticleController) GetOne(c *gin.Context) {
20. result := result.NewResult(c)
21. param := request.ArticleRequest{ID: validCheck.StrTo(c.Param("id")).MustUInt64()}
22. valid, errs := validCheck.BindAndValid(c, &param)
23. if !valid {
24. result.Error(400,errs.Error())
25. return
26. }
28. if (param.ID == 100) {
29. var z int = 0
30. var i int = 100 / z
31. fmt.Println("i:%i",i)
32. }
34. articleOne,err := service.GetOneArticle(param.ID);
35. if err != nil {
36. result.Error(404,"数据查询错误")
37. } else {
38. result.Success(&articleOne);
39. }
40. return
41. }
4,global/casbin.go
1. package global
3. import (
4. "fmt"
5. "github.com/casbin/casbin/v2"
6. "log"
7. "os"
8. )
10. var (
11. Enforcer *casbin.Enforcer
12. )
14. //创建casbin的enforcer
15. func SetupCasbinEnforcer() (error) {
16. dir, _ := os.Getwd()
17. modelPath := dir + "/config/rbac_model.conf"
18. csvPath := dir + "/config/rbac2.csv"
19. fmt.Println("modelPath:"+modelPath);
20. fmt.Println("csvPath:"+csvPath);
21. var errC error
22. Enforcer, errC = casbin.NewEnforcer(modelPath, csvPath)
23. //fmt.Printf("RBAC test start ") // output for debug
24. if (errC != nil) {
25. //fmt.Println(errC)
26. log.Fatalf("SetupCasbinEnforcer err: %v", errC)
27. return errC
28. } else {
29. Enforcer.EnableLog(true)
30. return nil
31. }
32. }
5,main.go
1. package main
3. import (
4. "github.com/gin-gonic/gin"
5. _ "github.com/jinzhu/gorm/dialects/mysql"
6. "github.com/liuhongdi/digv11/global"
7. "github.com/liuhongdi/digv11/router"
8. "log"
9. )
11. //init
12. func init() {
13. //setting
14. err := global.SetupSetting()
15. if err != nil {
16. log.Fatalf("init.setupSetting err: %v", err)
17. }
19. //logger
20. err = global.SetupLogger()
21. if err != nil {
22. log.Fatalf("init.SetupLogger err: %v", err)
23. }
25. //access logger
26. err = global.SetupAccessLogger()
27. if err != nil {
28. log.Fatalf("init.SetupAccessLogger err: %v", err)
29. }
31. //casbin
32. err = global.SetupCasbinEnforcer()
33. if err != nil {
34. log.Fatalf("init.SetupCasbinEnforcer err: %v", err)
35. global.Logger.Fatalf("init.SetupCasbinEnforcer err: %v", err)
36. }
38. //db
39. err = global.SetupDBLink()
40. if err != nil {
41. log.Fatalf("init.SetupLogger err: %v", err)
42. global.Logger.Fatalf("init.setupDBEngine err: %v", err)
43. }
45. global.Logger.Infof("------应用init结束")
46. //global.Logger.
47. }
49. func main() {
52. global.Logger.Infof("------应用main函数开始")
53. //设置运行模式
54. gin.SetMode(global.ServerSetting.RunMode)
55. //引入路由
56. r := router.Router()
57. //run
58. r.Run(":"+global.ServerSetting.HttpPort)
59. }
6,middleware/permission.go
1. package middleware
3. import (
4. "fmt"
5. "github.com/gin-gonic/gin"
6. "github.com/liuhongdi/digv11/global"
7. "github.com/liuhongdi/digv11/pkg/result"
8. )
10. func PermissionMiddleWare() gin.HandlerFunc {
11. return func(c *gin.Context) {
13. // 请求的path
14. p := c.Request.URL.Path
15. // 请求的方法
16. m := c.Request.Method
18. role:="superAdmin"
19. //role:="user"
20. //role:="guest"
22. fmt.Println("role:"+role)
23. fmt.Println("path:"+p)
24. fmt.Println("method:"+m)
26. // 检查用户权限
27. isPass, err := global.Enforcer.Enforce(role, p, m)
28. if err != nil {
29. resultRes := result.NewResult(c)
30. resultRes.Error(2005,err.Error())
31. return
32. }
33. if isPass {
34. c.Next()
35. } else {
36. resultRes := result.NewResult(c)
37. resultRes.Error(2006,"无访问权限")
38. return
39. }
40. }
41. }
7,其他相关代码可访问github

五，测试效果

1,middleware/permission.go中，
```
  role:="guest"
```
访问:
```
http://127.0.0.1:8000/home/home
```
返回:

访问:
```
http://127.0.0.1:8000/article/getone/2
```
返回:

访问:
```
http://127.0.0.1:8000/admin/admin
```
返回:

2,middleware/permission.go中，
```
role:="user"
```
访问:
```
http://127.0.0.1:8000/home/home
```
返回:

访问:
```
http://127.0.0.1:8000/article/getone/2
```
返回:

访问:
```
http://127.0.0.1:8000/admin/admin
```
返回:

3,middleware/permission.go中，
```
role:="superAdmin"
```
访问:
```
http://127.0.0.1:8000/home/home
```
返回:

访问:
```
http://127.0.0.1:8000/article/getone/2
```
返回:

访问:
```
http://127.0.0.1:8000/admin/admin
```
返回:

六，查看库的版本:
1. module github.com/liuhongdi/digv11
3. go 1.15
5. require (
6. github.com/gin-gonic/gin v1.6.3
7. github.com/go-playground/universal-translator v0.17.0
8. github.com/go-playground/validator/v10 v10.2.0
9. github.com/jinzhu/gorm v1.9.16
10. github.com/lestrrat/go-file-rotatelogs v0.0.0-20180223000712-d3151e2a480f
11. github.com/lestrrat/go-strftime v0.0.0-20180220042222-ba3bf9c1d042 // indirect
12. github.com/magiconair/properties v1.8.4 // indirect
13. github.com/mitchellh/mapstructure v1.3.3 // indirect
14. github.com/pelletier/go-toml v1.8.1 // indirect
15. github.com/pkg/errors v0.9.1 // indirect
16. github.com/spf13/afero v1.4.1 // indirect
17. github.com/spf13/cast v1.3.1 // indirect
18. github.com/spf13/jwalterweatherman v1.1.0 // indirect
19. github.com/spf13/pflag v1.0.5 // indirect
20. github.com/spf13/viper v1.7.1
21. github.com/casbin/casbin/v2 v2.17.0
22. go.uber.org/multierr v1.6.0 // indirect
23. go.uber.org/zap v1.16.0
24. golang.org/x/sys v0.0.0-20201119102817-f84b799fce68 // indirect
25. golang.org/x/text v0.3.4 // indirect
26. gopkg.in/ini.v1 v1.62.0 // indirect
27. gopkg.in/yaml.v2 v2.3.0 // indirect
28. )
相关阅读:
C++中左移<<的使用
 学会构造素数序列
 有关lower_bound()函数的使用
 Codeforces Round #166 (Div. 2)
暴力swap导致TLE问题解决办法
 memset的正确使用
 Codeforces Round #297 (Div. 2)
Codeforces Round #170 (Div. 2)B
Codeforces Round #176 (Div. 2)
C/C++ sort函数的用法
原文地址：https://www.cnblogs.com/ExMan/p/14312240.html

go语言web开发系列之十一:gin框架通过casbin实现rbac权限设计(csv存储)

一，安装casbin

二，演示项目的相关信息

三，配置文件说明:

四，go代码说明

五，测试效果

六，查看库的版本: