angularpostman不同的bodytype需要什么样的请求格式

1. postman的body请求格式为 raw (application/json), 则angular请求方式

const headers = new HttpHeaders().set("Content-Type", "application/json; charset=UTF-8").set("Accept", "*/*" );
let body1 = {
"access_token" : environment.token
}
this.httpClient.post(environment.baseUrl + "ResourceV3/getCategoryList.mvc",body1,{headers})
.subscribe( (data:any) => {
this.spinner.hide();
if(data["statusCode"] == '0'){
}else{
this.snackBar.open('Something went wrong. Please try again later.', '×', { panelClass: 'error', verticalPosition: 'top', duration: 5000 });
}
},
error => {
this.spinner.hide();
this.snackBar.open('Something went wrong. Please try again later.', '×', { panelClass: 'error', verticalPosition: 'top', duration: 5000 });
});

2. postman的body的请求格式为application/x-www-form-urlencoded，则angular的请求方式为

const headers = new HttpHeaders().set("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8").set("Accept", "*/*" );
let body1 = new HttpParams({
fromObject : {
"access_token" : environment.TOKEN
}
});
this.httpClient.post(environment.baseUrl + environment.API.getCategoryList,body1,{headers})
.subscribe( (data:any) => {
this.spinner.hide();
if(data["statusCode"] == '0'){
this.categoryList=data["returnData"]["datas"]
this.categoryList = this.categoryList.sort((a:any, b:any)=>a.name.localeCompare(b.name));
}else{
this.snackBar.open('Something went wrong. Please try again later.', '×', { panelClass: 'error', verticalPosition: 'top', duration: 5000 });
}
},
error => {
this.spinner.hide();
this.snackBar.open('Something went wrong. Please try again later.', '×', { panelClass: 'error', verticalPosition: 'top', duration: 5000 });
});