my.request

2023-04-28 21:00

Network request of a Mini Program.

Notes

Configure the domain name whitelist at first under Mini Program > Configuration> Server Domain Whitelist. The Mini Program can only communicate with the domain names in the whitelist during the API calls: my.request (send HTTP request), my.uploadFile (upload file), and my.downloadFile (download file).
During the Mini Program development, in the developer tool, select whether to ignore the httpRequest domain name validity check under Details > Domain name information. If yes, the domain name validity will not be checked in the simulator, preview, and real machine debugging scenarios. However, before the Mini Program goes online, you must maintain the domain names in the whitelist, otherwise, the domain names cannot be effective in the official release.

Important: my.request request header is {'content-type': 'application/json'} by default, instead of {'content-type': 'application/x-www-form-urlencoded'}.

Sample Code

copy
my.request({
  url: 'https://httpbin.org/post',
  method: 'POST',
  data: {
    from: 'Mini Program',
    production: 'JSAPI',
  },
  dataType: 'json',
  success: function(res) {
    my.alert({content: 'success'});
  },
  fail: function(res) {
    my.alert({content: 'fail'});
  },
  complete: function(res) {
    my.hideLoading();
    my.alert({content: 'complete'});
  }
});

const task = my.request({url: 'https://httpbin.org/post'})
task.abort()

Parameters

Property	Type	Required	Description
url	String	Yes	Target server url.
headers	Object	No	Set the request HTTP header. The default value is `{'content-type': 'application/json'}` .
method	String	No	The default value is GET. Both GET and POST are supported.
data	Object	No	Request parameter.
timeout	Number	No	Timeout period in ms. The default value is 30000.
dataType	String	No	Expected format of the returned data. The following formats are supported: json text base64 The default format is json.
enableCookie	Boolean	No	Indicates whether the cookie request header is used. Valid values are: `true`: indicates the cookie request header is used. `false`: indicates the cookie request header is ignored and any available and non-expired cookies that are returned by the server in the previous response are automatically used.
success	Function	No	The callback function for a successful API call.
fail	Function	No	The callback function for a failed API call.
complete	Function	No	The callback function used when the API call is completed. This function is always executed no matter the call succeeds or fails.

Data Parameter Description

Data transferred to the server is eventually expressed in String. If the type is not String, the data will be converted into String. Conversion rules are:

If the method is GET, the data will be converted into query string: encodeURIComponent(k)=encodeURIComponent(v)&encodeURIComponent(k)=encodeURIComponent(v)...
If the method is POST and the headers['content-type'] is application/json, the data will be JSON serialized.
If the method is POST and the headers['content-type'] is application/x-www-form-urlencoded, the data will be converted into query string: encodeURIComponent(k)=encodeURIComponent(v)&encodeURIComponent(k)=encodeURIComponent(v)...

Success Callback Function

The type of the incoming parameter is Object with the following attributes:

Property	Type	Description
data	String	Response data. The format depends on the value of `dataType` in the request.
status	Number	Response code.
headers	Object	Response header.

Error Code

Error code	Error message	Further action
2	URL parameter cannot be empty	Check whether the URL is in HTTPS format and whether all parameters in URL are correct.
4	Not authorized to call the interface Tip: This error might result from several reasons. For details, see the Further action column.	Errors occur because the server domain authorization list/whitelist is not configured. In this case, configure the server domain whitelist under Mini Program > Configuration> Server Domain Whitelist. The mini program can only communicate with the domains in the whitelist when calling the `my.request` and `my.uploadFile` APIs. If the server domain whitelist is updated, the whitelist comes effective only when a new version of the mini program is published. Notes: After adding the server domain to the whitelist, must release a new version to make it effective. The server domain to be configured is the domain name in the `url` parameter.
		Errors occur because there is something wrong with your account and you cannot login to the mini program platform. In this case, when you debug in the Mini Program Studio, select Ignore httpRequest domain name validity check or Ignore Webview domain name validity check under Details > Domain name information, and then preview the debugging request.
		Errors occur because the request domain name is incorrect. In this case, check whether the request domain name is the same as that is configured in the server domain whitelist.
12	Network error	Seems the connection to the internet is lost. Check whether the network environment is normal and whether the server is stable.
13	Timeout	Check whether the network environment is normal and if the server is responding properly. If the request takes a long time, you can appropriately set the timeout.
14	Decoding failed. JSON parse data error.	Check whether the value of the `dataType` parameter is correct: If `dataType` is `json`: The mini program framework fails to parse the response result by using `JSON.parse`. If `dataType` is `text`: The format of the returned content is incorrect. If `dataType` is `base64`: Conversion failed. It is recommended to check whether the request and response data formats between the frontend and backend are consistent. For example, if the response data format (e.g. `text` ) does not match the request parameter `dataType` value (e.g. `JSON`), it will cause this error. Please modify the backend response data format to `JSON`. Notes: If the backend is PHP or .NET, check whether the response content carries a BOM, and remove the UTF-8 BOM header. If the server needs to return a non-JSON string, set the `dataType` parameter of `my.request` to `text`.
19	HTTP error	The error occurs when the HTTP status code in the response is >= `400`. You can try to open the IDE debugger > Network to view detailed error information, or check the `status`and `data` parameter in the call back function about the error. For other references, see HTTP status code.
20	The request URL does not support HTTP	The operation is cancelled because of URL errors. The request URL does not support HTTP. Use HTTPs in the request URL.

Return Value

RequestTask

Network request task object.

Method

RequestTask.abort()

Note:

If Not authorized to call the interface is returned, configure the domain whitelist under Mini Program > Configuration> Server Domain Whitelist in the mini program platform.