Keycloak Missing form parameter: grant_type

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攒了一身酷
攒了一身酷 2021-02-05 00:51

I have keycloak standalone running on my local machine.

I created new realm called \'spring-test\', then new client called \'login-app\'

According to the rest docu

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6条回答
  • 2021-02-05 01:29

    I had similar issue in SOAPUI testing. We should not POST a json. This got resolved when I cleared 'Media Type' and checked 'PostQueryString' checkbox. 'Media Type box' will set to 'www-form-urlencoded' by itself. Add attributes at Top by hitting plus sign.

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  • 2021-02-05 01:36

    For those having problems with curl the curl command is as follows

    curl -d "client_secret=<client-secret>" -d "client_id=<client-id>" -d "username=<username>" -d "password=<password>" -d "grant_type=password" "http://localhost:8080/auth/realms/<realm-name>/protocol/openid-connect/token"
    

    The curl command works without the Content-Type header.

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  • 2021-02-05 01:37

    Here's a sample CURL command

    curl -X POST \
      http://localhost:8080/auth/realms/your_realm_name/protocol/openid-connect/token \
      -H 'Accept: */*' \
      -H 'Accept-Encoding: gzip, deflate' \
      -H 'Cache-Control: no-cache' \
      -H 'Connection: keep-alive' \
      -H 'Content-Length: 69' \
      -H 'Content-Type: application/x-www-form-urlencoded' \
      -H 'Cookie: KC_RESTART=' \
      -H 'Host: localhost:8080' \
      -H 'Postman-Token: 88f38aa0-8659-4b37-a2aa-d6b92177bdc2,29c4e7db-51f4-48d1-b6d5-daab06b68ab4' \
      -H 'User-Agent: PostmanRuntime/7.20.1' \
      -H 'cache-control: no-cache' \
      -d 'client_id=my-app&username=admin&password=admin123&grant_type=password'
    
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  • 2021-02-05 01:39

    With Curl

    curl -X POST \
    http://localhost:8080/auth/realms/api-gateway/protocol/openid-connect/token \
    -H 'Accept: */*' \
    -H 'Accept-Encoding: gzip, deflate' \
    -H 'Cache-Control: no-cache' \
    -H 'Connection: keep-alive' \
    -H 'Content-Length: 73' \
    -H 'Content-Type: application/x-www-form-urlencoded' \
    -H 'Cookie: JSESSIONID=F8CD240FF046572F864DC37148E51128.a139df207ece;   JSESSIONID=65D31B82F8C5FCAA5B1577DA03B4647C' \
    -H 'Host: localhost:8080' \
    -H 'Postman-Token: debc4f90-f555-4769-b392-c1130726a027,d5087d9f-9253-48bd-bb71-fda1d4558e4d' \
    -H 'User-Agent: PostmanRuntime/7.15.2' \
    -H 'cache-control: no-cache' \
    -d 'grant_type=password&client_id=api-gateway&username=admin&password=temp123'
    

    By Postman (Select x-www-form-urlencoded option for parameters)

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  • 2021-02-05 01:44

    You should send your data in a POST request with Content-Type header value set to application/x-www-form-urlencoded, not json.

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  • 2021-02-05 01:46

    For those who landed here from a search looking for JavaScript solution.

    Here is an example when exchanging code for access_token with keycloak authority using axios.

    querystring is used in this example:

    npm install querystring
    

    or

    yarn add querystring
    

    Sending the request:

    
    import queryString from 'querystring'
    
    const params = {
    
        grant_type: 'authorization_code,
        client_id: 'client-id-here',
        code: 'code-from-previous-redirect',
        redirect_uri: location.protocol + '//' + location.host
    
    };
    
    axios({
    
        method: 'post',
        url: 'https://my-keycloak.authority/token',
        data: queryString.stringify(params),
        config: {
            headers: {'Content-Type': 'application/x-www-form-urlencoded'}
        }
    
    }).then(response => {
    
        console.log(response.data);
    
    }).catch(error => {
    
        console.error(error);
    
    });
    
    

    You are required to send a POST request with the parameters as a URL encoded string in the request body.

    FormData object does not work.

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