Feature query of hypergraph iserver rest Service

In hypergraph map iServer During service use , It involves data query in layers , What is offered is rest service , Pass in the corresponding parameters , Return the query result of data .
http://support.supermap.com:8090/iserver/services/data-world/rest/data/featureResults

Select the dataset to query , It can query multiple data sets at the same time , The query mode is divided into ：ID、SQL、BOUNDS、BUFFER etc. , Able to field 、 Space and other forms of data query , The corresponding query conditions of various query types are also different .
In front end development , call feature When querying the service of , The official website provides a way to call , Need to quote
SuperMap iClient Classic Class library , Download address ：

https://iclient.supermap.io/web/introduction/classic.html#introduce

The specific code call method is github On （ With SQL For example ）：
https://github.com/SuperMap/iClient-JavaScript/blob/master/examples/classic/query_getFeatureBySQL.html
meanwhile , You can also call without using the official class library , The specific implementation is as follows ：

// Use axios Library ,post Form of service 
  axios.request({
     url: 'http://support.supermap.com:8090/iserver/services/data-world/rest/data/featureResults.json?returnContent=true',

                headers: {
     'Content-Type': 'application/json' },

                method: 'post',

               // Query condition method , Query the filtered fields 

                data: {
    

                    getFeatureMode: "SQL",

                    datasetNames:["World:Capitals"],

                    maxFeatures: 1000,

                    queryParameter: {
     attributeFilter: "SMID<10"}

                }

            }

            ).then(res => {
    

           // Return query results 

            })