Getting CORS issue while accessing(only GET) third party API from AXIOS in SPFX react webpart

Question

Hi Friends,

I am getting below error when I make get call to third party API from AXIOS in my SPFX react webpart.

Access to XMLHttpRequest at 'API URL ' from origin 'SP online site workbench URL' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource.

my code blog:

let config = {
headers: {'Access-Control-Allow-Origin': '*'},
params: {
ts: current_time,
portal: abc
}
}

const response = await axios.get(APIUrl, config);

Initially I didn't pass Access-Control-Allow-Origin in headers but now I passed and check but getting the same issue.

All reply will be appreciated.

Thank you.

Answer 1

can you use SPHttpClient instead of axios object like shown here: Getting around CORS issues in SPFx with SPHttpClient. If config params which are passed to axios.get() method are translated to query string in HTTP GET request it should be possible.

Answer 2

Hi @Amol Tidke ,

Please use SPHttpClient to overcome CORS issue:

Getting around CORS issues in SPFx with SPHttpClient

private async postToChannel(msg = "Testing API", channel = this.channel) {  
      const url = `https://slack.com/api/chat.postMessage?token=${  
          this.token  
      }&channel=${this.channel}&text=${msg + " using HttpClient"}`;  
  
  
    return await this.context.httpClient.post(  
        url,  
        HttpClient.configurations.v1,  
        {  
          mode:"cors",  
          headers:{  
            "Content-Type":"application/x-www-form-urlencoded"  
          }  
        }  
    );  
}  

Here is a similiar issue posted in GitHub for your reference:

Problem making 3rd party API calls using SPFx

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