axios requests to download and export a file. If the request succeeds, it returns a file in stream form. You need to set responseType: "arraybuffer", but when the request fails, you return json, and you need to use the default responseType:" json" to handle the error message. So the question is, how should I set this responseType? according to the server response
request set responseType: 'arraybuffer',
when the request succeeds, and when the request for downloading the file
fails, the backend returns a json object, such as {"msg": "system exception", "code": 1, "success": false}, which is also converted to arraybuffer
my solution is to convert the data arraybuffer into a Json object when it fails.
for example:
first understand the priority of the axios attribute configuration,
Let's go from low priority to high priority
- let instance = axios.create ()
- instance.defaults.timeout = 2500
- instance.get ("getcarline", {
timeout:5000 )
})
process according to the value of http status Code
- http status Code:200 sets responseType: "arraybuffer"
- http status Code:500 set axios.defaults.responseType = 'json';
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