JWT middleware for Echo framework. This middleware uses by default golang-jwt/jwt/v5 as JWT implementation.
This repository does not use semantic versioning. MAJOR version tracks which Echo version should be used. MINOR version tracks API changes (possibly backwards incompatible) and PATCH version is incremented for fixes.
NB: When golang-jwt MAJOR version changes this library will release MINOR version with breaking change. Always
add at least one integration test in your project.
For Echo v5 use v5.x.y releases.
Minimal needed Echo versions:
v5.0.0needs Echov5.0.0+v4.0.0needs Echov4.7.0+
main branch is compatible with the latest Echo version.
Add JWT middleware dependency with go modules
go get github.com/labstack/echo-jwt/v5
Use as import statement
import "github.com/labstack/echo-jwt/v5"
Add middleware in simplified form, by providing only the secret key
e.Use(echojwt.JWT([]byte("secret")))
Add middleware with configuration options
e.Use(echojwt.WithConfig(echojwt.Config{ // ... SigningKey: []byte("secret"), // ... }))
Extract token in handler
import "github.com/golang-jwt/jwt/v5" // ... e.GET("/", func(c *echo.Context) error { token, err := echo.ContextGet[*jwt.Token](c,"user") if err != nil { return echo.ErrUnauthorized.Wrap(err) } claims, ok := token.Claims.(jwt.MapClaims) // by default claims is of type `jwt.MapClaims` if !ok { return errors.New("failed to cast claims as jwt.MapClaims") } return c.JSON(http.StatusOK, claims) })
Ensure that your project includes at least one integration test to detect changes in major versions of the
golang-jwt/jwt library early.
This is crucial because type assertions like token := c.Get("user").(*jwt.Token) may fail silently if the imported
version of the JWT library (e.g., import "github.com/golang-jwt/jwt/v5") differs from the version used internally by
dependencies (e.g., echo-jwt may now use v6). Such discrepancies can lead to invalid casts, causing your handlers to
panic or throw errors. Integration tests help safeguard against these version mismatches.
func TestIntegrationMiddlewareWithHandler(t *testing.T) { e := echo.New() e.Use(echojwt.WithConfig(echojwt.Config{ SigningKey: []byte("secret"), })) // use handler that gets token from context to fail your CI flow when `golang-jwt/jwt` library version changes // a) `token, ok := c.Get("user").(*jwt.Token)` // b) `token := c.Get("user").(*jwt.Token)` e.GET("/example", exampleHandler) req := httptest.NewRequest(http.MethodGet, "/example", nil) req.Header.Set(echo.HeaderAuthorization, "Bearer <TOKEN>") res := httptest.NewRecorder() e.ServeHTTP(res, req) if res.Code != 200 { t.Failed() } }
package main import ( "errors" "log/slog" "github.com/golang-jwt/jwt/v5" "github.com/labstack/echo-jwt/v5" "github.com/labstack/echo/v5" "github.com/labstack/echo/v5/middleware" "net/http" ) func main() { e := echo.New() e.Use(middleware.RequestLogger()) e.Use(middleware.Recover()) e.Use(echojwt.WithConfig(echojwt.Config{ SigningKey: []byte("secret"), })) e.GET("/", func(c *echo.Context) error { token, err := echo.ContextGet[*jwt.Token](c, "user") if err != nil { return echo.ErrUnauthorized.Wrap(err) } claims, ok := token.Claims.(jwt.MapClaims) // by default claims is of type `jwt.MapClaims` if !ok { return errors.New("failed to cast claims as jwt.MapClaims") } return c.JSON(http.StatusOK, claims) }) if err := e.Start(":8080"); err != nil { slog.Error("Failed to start server", "error", err) } }
Test with
curl -v -H "Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ" http://localhost:8080Output should be
* Trying 127.0.0.1:8080... * Connected to localhost (127.0.0.1) port 8080 (#0) > GET / HTTP/1.1 > Host: localhost:8080 > User-Agent: curl/7.81.0 > Accept: */* > Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.TJVA95OrM7E2cBab30RMHrHDcEfxjoYZgeFONFh7HgQ > * Mark bundle as not supporting multiuse < HTTP/1.1 200 OK < Content-Type: application/json; charset=UTF-8 < Date: Sun, 27 Nov 2022 21:34:17 GMT < Content-Length: 52 < {"admin":true,"name":"John Doe","sub":"1234567890"}