這個機器學習服務的文檔：https://help.sap.com/viewer/b04a8fe9c04745b98ad8652ccd5d636f/1907B/en-US/d6fee2fd184d48d5b221928a8db4c2fd.html?q=Customizable%20Image%20Feature%20Extraction

測試控制臺：

輸入是任意一個圖片文件，
輸出是一串特征矩陣，如下圖所示：

完整代碼：

var app = require('express')(); var server = require('http').Server(app); var request = require('request'); var defaultPort = 8081; const fs = require('fs'); var port = process.env.PORT || defaultPort;console.log("Server listens on port: " + port); server.listen(port);function print_env(){console.log(process.env); }app.get('/', function (req, res) {res.header("Access-Control-Allow-Origin", "*");var response = "Hello World: " + port;callFeatureExtractionAPI();res.send(response); });app.get('/env', function (req, res) {print_env();// res.sendFile(__dirname + '/index.html');var response = JSON.stringify(process.env);res.send(response); });function callFeatureExtractionAPI() {var url = "https://mlfproduction-image-feature-extractor.cfapps.eu10.hana.ondemand.com/api/v2/image/feature-extraction";var api = "eyKXPuZf__ANtBqpk";var oRequestOptions = {url: url,method: "POST",json:true,formData: {files: fs.createReadStream("./1.png")},headers: {"Authorization": "Bearer " + api}};return new Promise(function(resolve,reject){var requestC = request.defaults({jar: true});console.log("Step1: get picture feature via url: " + url );requestC(oRequestOptions,function(error,response,body){if(error){console.log("error occurred: " + error);reject(error);}debugger;console.log("Body:" + body);console.log("response: " + response);resolve(body);}); }); }

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