我将标题替换为params

I replace header to params

getTokenHeader() {
    return this.afAuth.auth.currentUser.getIdToken()
    .then(token => {
        let params = new URLSearchParams();
        params.set('tsid', `Bearer ${token}`);
        return params;
    });
}

并在此函数中调用getTokenHeader

and call getTokenHeader in this function

    addPost(body): Observable<any>{//
        // const url = 'https://us-central1-talentdraw-prod.cloudfunctions.net/api/post';
        let url = this.api.URL['main']+this.api.URL['afterAuth'];

        return new Observable(observer => {
            this.getTokenHeader()
            .then(tokenOptions => {
                // console.log(tokenOptions);

                return this.http.get(url, { 
                    search: tokenOptions
                    })
                    .map((res:Response) => {
                        // this.data = res.json().data;
                        observer.next(res);
                        observer.complete();
                    })
                    .subscribe((data) => {
                        observer.complete();
                    })
                })
                .catch(( error: any ) => {
                    observer.error(error);
                    observer.complete();
                });
        })
    }