null pointer exception

[yzcyayaya]

Describe the bug

null pointer exception

To Reproduce

Steps to reproduce the behavior:

1. Go to jwt
2. different places 'Authenticator: func(){ .... users, err := dal.CheckUser(loginStruct.Account, loginStruct.Password)}'

func CheckUser(account, password string) ([]*po.User, error) {
	res := make([]*po.User, 0)
	if err := DB.Where(DB.Or("username = ?", account).
		Or("phone_number = ?", account)).
		Find(&res).Error; err != nil {
		return nil, err
	} else {
		if !utils.CheckPass(res[0].Password, password) {
			return nil, errors.New("密码匹配错误")
		}
	}
	return res, nil
}

route:

// customizeRegister registers customize routers.
func customizedRegister(r *server.Hertz) {
	r.POST("/login", middleware.JwtMiddleware.LoginHandler)
	auth := r.Group("/api/v1/auth")
	auth.Use(middleware.JwtMiddleware.MiddlewareFunc())
	{
		auth.GET("/ping", handler.Ping)
	}
}

3. debug track down

func (mw *HertzJWTMiddleware) LoginHandler(ctx context.Context, c *app.RequestContext) {
	if mw.Authenticator == nil  <<==== this error

4. See error

2022/10/26 12:17:07.444854 recovery.go:46: [Error] [Recovery] 2022/10/26 - 12:17:07 panic recovered:
runtime error: invalid memory address or nil pointer dereference

Expected behavior

Correctly Authentication

Screenshots

debug-image-url : ·=https://cdn.m2dd.top/blog/hertz-jwt-error-01.gif

Hertz version:
v0.3.2

Environment:

m2@m2:~$ go env
GO111MODULE="on"
GOARCH="amd64"
GOBIN=""
GOCACHE="/home/m2/.cache/go-build"
GOENV="/home/m2/.config/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="linux"
GOINSECURE=""
GOMODCACHE="/usr/local/GoCode/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="linux"
GOPATH="/usr/local/GoCode"
GOPRIVATE=""
GOPROXY="https://goproxy.cn,direct"
GOROOT="/usr/local/devEnv/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/devEnv/go/pkg/tool/linux_amd64"
GOVCS=""
GOVERSION="go1.18"
GCCGO="gccgo"
GOAMD64="v1"
AR="ar"
CC="gcc"
CXX="g++"
CGO_ENABLED="1"
GOMOD="/dev/null"
GOWORK=""
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build1477738438=/tmp/go-build -gno-record-gcc-switches"

Additional context

nil

[li-jin-gou]

I don't reproduce the problem locally, and I don't see the full stack information to allow me to determine why your code is panic.but I think it may be a problem with the business code.

[yzcyayaya]

sorry, close this issues, have already solved; I forgot to call it JwtInit funcation.

[li-jin-gou]

sorry, close this issues, have already solved; I forgot to call it JwtInit funcation.

OK and thank you for using hertz.