Axios - How to read JSON response?

问题

Axios 0.17.1

.then(function (response) {
                console.log(response);
                //console.log(response.status);
                //It is an error -> SyntaxError: Unexpected token u in JSON at position 0 
                console.log(JSON.parse(response.data.error));
                console.log(response.data.error); //undefined.

The console.log of response is

{data: "{"error":"Name must be entered with more than one … NULL↵
["isPipe":protected]=>↵ NULL↵ }↵}↵", status: 203, statusText: "Non-Authoritative Information", headers: {…}, config: {…}, …} config : {adapter: ƒ, transformRequest: {…}, transformResponse: {…}, timeout: 0, xsrfCookieName: "XSRF-TOKEN", …} data : "{"error":"Name must be entered with more than one character."}object(Slim\Http\Response)#32 (5) {↵ ["status":protected]=>↵ int(200)↵ ["reasonPhrase":protected]=>↵ string(0) ""↵ ["protocolVersion":protected]=>↵ string(3) "1.1"↵ ["headers":protected]=>↵ object(Slim\Http\Headers)#33 (1) {↵
["data":protected]=>↵ array(1) {↵ ["content-type"]=>↵
array(2) {↵ ["value"]=>↵ array(1) {↵ [0]=>↵
string(24) "text/html; charset=UTF-8"↵ }↵
["originalKey"]=>↵ string(12) "Content-Type"↵ }↵ }↵ }↵ ["body":protected]=>↵ object(Slim\Http\Body)#31 (7) {↵
["stream":protected]=>↵ resource(59) of type (stream)↵
["meta":protected]=>↵ NULL↵ ["readable":protected]=>↵ NULL↵
["writable":protected]=>↵ NULL↵ ["seekable":protected]=>↵
NULL↵ ["size":protected]=>↵ NULL↵ ["isPipe":protected]=>↵
NULL↵ }↵}↵" headers : {content-type: "application/json;charset=utf-8"} request : XMLHttpRequest {onreadystatechange: ƒ, readyState: 4, timeout: 0, withCredentials: false, upload: XMLHttpRequestUpload, …} status : 203 statusText : "Non-Authoritative Information" proto : Object

JSON.parse(response.data) as well as response.data.error -> Both are giving error. How can i read the data?

Slimframework 3.

$data = array('error' => 'Name must be entered with more than one character.');
        $newResponse = $response->withJson($data, 203);
        return $newResponse;

回答1:

In Axios responses are already served as javascript object, no need to parse, simply get response and access data.

回答2:

I had a similar format response as the one in console log and my issue was that my .json file wasn't property formatted. I was missing a comma. Post your json file to have a look.

来源：https://stackoverflow.com/questions/48062821/axios-how-to-read-json-response

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javascript

reactjs

slim

axios