如何在 Javascript 中处理此 API 响应？

Question

I'm getting an API error that I would like to have the JSON for.

I'm currently handling the response like this:

return fetch( 'https://api-prod.corelogic.com/property/' + propertyId + '/avm/thv/thvMarketingStandard', {
  method: "GET",
  headers: {
    Accept: 'application/json',
    Authorization: "Bearer " + token
  },
})
.then(function (resp) {

  console.log(resp)

  if(resp.status === 200 ){

    // Return the response as JSON
    return resp.json();         
  }else{
    return resp.text()
  }

}).then(function (data) {
  console.log(JSON.stringify(data), data.toString())    
  return data
})

Returning the response as JSON was giving me nothing, so I returned it as text and got the following:

"<root>\n                    {\n                        \"errorCode\": \"429\",\n                        \"message\": \"Quota Exceeded\",\n                        \"description\": \"You have exceeded your daily quota for this application and orders will no longer be processed today. You will be able to resume testing tomorrow.\"\n                    }\n                </root>\n            " – "<root>↵                    {↵                        \"errorCode\": \"429\",↵                        \"message\": \"Quota Exceeded\",↵            …"

Is there any way I can parse this correctly into JSON?

Answer 1

It appears the response is not valid JSON and is being returned in plaintext/html. Perhaps look at the returned header to see what the actual Content-Type is?

If you want a more clear response you could remove the large areas of whitespace in the the response.text .

Does the API you are using support JSON responses? Could you add a header in your request that asks for a JSON response?

Answer 2

I was able to retrieve the JSON by parsing the string as XML:

  .then(function (resp) {

      console.log(resp)

        if(resp.status === 200 ){

            // Return the response as JSON
            return resp.json();         
        }else{
            return resp.text();

        }


    }).then(function (data) {


        if(IsJsonString(data)){
            return data
        }else{
            const parser = new DOMParser();
            const errorXML = parser.parseFromString(data,"text/xml")
            const errorString  = errorXML.getElementsByTagName("root")[0].childNodes[0].nodeValue
            const errorJSON = JSON.parse(errorString as string)
            console.log(errorJSON)
        }

    })