update examples

example_build_test.go

@@ -8,7 +8,7 @@ import (
 )
 
 func Example_BuildSimple() {
-	signer := jwt.NewHS256([]byte(`secret`))
+	signer, _ := jwt.NewHS256([]byte(`secret`))
 	builder := jwt.NewTokenBuilder(signer)
 
 	claims := &jwt.StandardClaims{
@@ -43,7 +43,7 @@ func (u *userClaims) MarshalBinary() ([]byte, error) {
 }
 
 func Example_BuildUserClaims() {
-	signer := jwt.NewHS256([]byte(`secret`))
+	signer, _ := jwt.NewHS256([]byte(`secret`))
 	builder := jwt.NewTokenBuilder(signer)
 
 	claims := &userClaims{
@@ -73,7 +73,7 @@ func (d *dummyClaims) MarshalBinary() ([]byte, error) {
 }
 
 func Example_DummyClaims() {
-	signer := jwt.NewHS256([]byte(`secret`))
+	signer, _ := jwt.NewHS256([]byte(`secret`))
 	builder := jwt.NewTokenBuilder(signer)
 
 	claims := dummyClaims(map[string]interface{}{

example_validate_test.go

@@ -0,0 +1,44 @@
+package jwt_test
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/cristalhq/jwt"
+)
+
+func Example_Validate() {
+	t := `eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJhZG1pbiIsImp0aSI6InJhbmRvbS11bmlxdWUtc3RyaW5nIn0.dv9-XpY9P8ypm1uWQwB6eKvq3jeyodLA7brhjsf4JVs`
+
+	token, err := jwt.Parse([]byte(t))
+	if err != nil {
+		fmt.Printf("parse err: %q", err)
+		return
+	}
+
+	fmt.Printf("Algorithm %v\n", token.Header().Algorithm)
+	fmt.Printf("Type      %v\n", token.Header().Type)
+	fmt.Printf("Claims    %v\n", string(token.RawClaims()))
+	fmt.Printf("Payload   %v\n", string(token.Payload()))
+	fmt.Printf("Token     %v\n", string(token.Raw()))
+
+	claims := &jwt.StandardClaims{}
+	_ = json.Unmarshal(token.RawClaims(), claims)
+
+	validator := jwt.NewValidator(
+		jwt.AudienceChecker([]string{"admin"}),
+		jwt.IDChecker("random-unique-string"),
+	)
+
+	err = validator.Validate(claims)
+	if err != nil {
+		fmt.Printf("token is invalid: %#v", err)
+	}
+
+	// Output:
+	// Algorithm HS256
+	// Type      JWT
+	// Claims    {"aud":"admin","jti":"random-unique-string"}
+	// Payload   eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJhZG1pbiIsImp0aSI6InJhbmRvbS11bmlxdWUtc3RyaW5nIn0
+	// Token     eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJhdWQiOiJhZG1pbiIsImp0aSI6InJhbmRvbS11bmlxdWUtc3RyaW5nIn0.dv9-XpY9P8ypm1uWQwB6eKvq3jeyodLA7brhjsf4JVs
+}