post request with form-data from angular to spring

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i am trying to send a post request to my spring rest api using angular and its http library.

currently in post-man (sucessfully) i am sending the data in this way:

  1. The format is form-data
  2. The key is reqData(mandatory)
  3. The Value is json(mandatory)

how to send the data in the same way via angular?

currently, this is how my data looks like:

onSignIn(form: NgForm) {
    const email = form.value.email;
    const password = form.value.password;

    const reqData = {
      'app_uname': email,
      'app_pass': password
    };
}

adding more about my backend code:

my rest api looks like this:

@RequestMapping(value = "/login", method = RequestMethod.POST)

@ResponseBody
public ResponseEntity<String> handle(@RequestParam(value = "reqData") String reqData,HttpServletRequest request)

so i should be sending a key and value ( i am not aware which data structure in typescript,but in java it is MultiValueMap) where the key is reqData and the value should be json in string or json object.

how to make my reqData json in angular to MultiValueMap format?

i have tried both formData and Map also:

const formData: FormData = new FormData();
    formData.append('reqData', JSON.stringify(reqData));

const map = new Map();
    map.set('reqData', reqData);

you can create a method to post as below:

var model = {email: youremail, password: yourpassword};
post(url: string, model: any): Observable <any> {
    let formData: FormData = new FormData(); 
    formData.append('app_uname', model.email); 
    formData.append('app_pass', model.password); 
    return this._http.post(url, formData)
        .map((response: Response) => {
            return response;
        }).catch(this.handleError); 
}

post request with form-data from angular to spring - angular - html, i am trying to send a post request to my spring rest api using angular and its http library. currently in post-man (sucessfully) i am sending the data in this way: The � Finally we use the post() method of HttpClient to send the form data to the server. For reference, FormData provides the following methods for working with form data: The FormData.append() appends a new value for an existing key, or adds the key if it does not exist. The FormData.delete() method deletes a key/value pair from a FormData object.

To send data to server using formdata using can do this like this

const email = form.value.email;
const password = form.value.password;

const formData: FormData = new FormData();
formData.append("email ", email);
formData.append("password ", password);

// then http post to server

Edit

if you want to submit the data as json you need to do like this

const email = form.value.email;
const password = form.value.password;

const reqData = {
  'app_uname': email,
  'app_pass': password
};

const formData: FormData = new FormData();
formData.append("reqData", JSON.stringify(reqData));

// then http post to server and in the server you need to parse the json string

Hope it solve your problem. Please let me know if this solve your problem

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This is what i have done to send request to my backend.

i created the required json,then i created a request parameter string

const reqData = 'reqData=' + jsonDataInString;

which sent a success request.

Angular 8 + Spring Boot: File upload example, Angular 8 + Spring Boot example: Build a CRUD App FormData(); formData. append('file', file); const req = new HttpRequest('POST', `${this. In this Angular FormData tutorial, we will understand how to use Angular 8/9/10 HttpClient API to Post FormData to a web server.Forms are an essential part of any web or mobile applications, and Forms allow us to gather data from the users and send that data to the webserver.

AngularJS Http Post Method ($http.post) with Parameters Example , Angularjs http post ($http.post) service or method example. In angularjs http post service ($http.post) is used to send form data to remote http server. By using� This is the Part 1 of Spring Boot + Angular 9 CRUD Example Tutorial, In this part 1, we will develop a CRUD RESTFul APIs using Spring boot 2+. WebRequest request

Angular httpclient post example, In this video we will discuss posting data to the server using Angular HttpClient service. To Duration: 9:39 Posted: Jul 23, 2018 Let's keep in mind that the AppComponent class initialized the title field with the value Spring Boot – Angular Application. Thus, Angular will display the value of this field in the template. Likewise, changing the value in the constructor will be reflected in the template. The second thing to note is the routerLink attribute.

This article is first in the series of articles on different techniques that could be used to POST different formats of data to the server when working with AngularJS and Spring MVC. In this article, the code samples demonstrate how to post plain HTML text data (text/html) format to the server.

Comments
  • developer.mozilla.org/en-US/docs/Web/API/FormData
  • please try to see what kind of data i want,key should be reqData and value should be json.
  • whatever key you want to send with json object then try to convert by json.stringify()
  • The key should be reqData and the value should be JSON of email and password.your answer doesn't help.
  • The request payload is empty. meaning the data is null.