Example added support for jwt

Author: LyricTian

README.md

@@ -134,26 +134,28 @@ Simulation examples of authorization code model, please check [example](/example
 
 ```go
 
-import "gopkg.in/oauth2.v3/generates"
-import "github.com/dgrijalva/jwt-go"
+import (
+	"gopkg.in/oauth2.v3/generates"
+	"github.com/dgrijalva/jwt-go"
+)
 
 // ...
 manager.MapAccessGenerate(generates.NewJWTAccessGenerate([]byte("00000000"), jwt.SigningMethodHS512))
 
-// Verify jwt access token
+// Parse and verify jwt access token
 token, err := jwt.ParseWithClaims(access, &generates.JWTAccessClaims{}, func(t *jwt.Token) (interface{}, error) {
 	if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
 		return nil, fmt.Errorf("parse error")
 	}
 	return []byte("00000000"), nil
 })
 if err != nil {
-	panic(err)
+	// panic(err)
 }
 
 claims, ok := token.Claims.(*generates.JWTAccessClaims)
 if !ok || !token.Valid {
-	panic("invalid token")
+	// panic("invalid token")
 }
 ```
 

example/server/server.go

@@ -8,8 +8,10 @@ import (
 	"os"
 	"time"
 
+	"github.com/dgrijalva/jwt-go"
 	"github.com/go-session/session"
 	"gopkg.in/oauth2.v3/errors"
+	"gopkg.in/oauth2.v3/generates"
 	"gopkg.in/oauth2.v3/manage"
 	"gopkg.in/oauth2.v3/models"
 	"gopkg.in/oauth2.v3/server"
@@ -23,6 +25,9 @@ func main() {
 	// token store
 	manager.MustTokenStorage(store.NewMemoryTokenStore())
 
+	// generate jwt access token
+	manager.MapAccessGenerate(generates.NewJWTAccessGenerate([]byte("00000000"), jwt.SigningMethodHS512))
+
 	clientStore := store.NewClientStore()
 	clientStore.Set("222222", &models.Client{
 		ID:     "222222",
@@ -32,12 +37,14 @@ func main() {
 	manager.MapClientStorage(clientStore)
 
 	srv := server.NewServer(server.NewConfig(), manager)
+
 	srv.SetPasswordAuthorizationHandler(func(username, password string) (userID string, err error) {
 		if username == "test" && password == "test" {
 			userID = "test"
 		}
 		return
 	})
+
 	srv.SetUserAuthorizationHandler(userAuthorizeHandler)
 
 	srv.SetInternalErrorHandler(func(err error) (re *errors.Response) {