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ORCAにnode.jsでアクセスしてみた꒰。・ω・`;꒱

Last updated at Posted at 2017-05-12

チェック方法

  • expressから、ORCAにHTTPで患者情報を取得し、その結果を表示する

ファイル構成

console
+ express_app
  + index.js
  + htdocs/
    + index.html
    + app.js
+ node_modules
+ package.json

起動方法

console
$ node index.js

パッケージの追加

console
$ npm install --save xml2js

患者情報取得

クライアントサイド

index.js
<!DOCTYPE html>
<html lang="ja">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <script
    src="http://code.jquery.com/jquery-3.2.1.min.js"
    integrity="sha256-hwg4gsxgFZhOsEEamdOYGBf13FyQuiTwlAQgxVSNgt4="
    crossorigin="anonymous"></script>
  <script type="text/javascript" src="app.js"></script>
</head>
<body>
  <h1>index.html</h1>
  <p id="result"></p>
  <button id="loadPatient">読込</button>
  <!--button id="loadPatient_Post">読込(POST)</button-->
</body>
</html>
app.js
$(function() {
  $('#loadPatient').on('click', function() {
    $.ajax({
      url: '/',
      type: 'POST',
      dataType: 'json',
      data: { patient_id: 1 },
      timeout: 3000,
      success: function(json) {
        if (json.data) {
          $('#result').text(json.data.name);
        } else {
          $('#result').text('error');
        }
      },
      error: function(XMLHttpRequest, textStatus, errorThrown) {
        alert('患者データを読み込めませんでした');
        $('#result').text('error');
      }
    });
  });
});

サーバサイド

index.js
var express = require('express');

var app = express();

// POSTパラメータ受信用
app.use(bodyParser.urlencoded({
    extended: true
}));
app.use(bodyParser.json());

// XML->JSON変換用
var parseString = require('xml2js').parseString;

// htdocsに静的なページを用意する
app.use(express.static('htdocs'));

app.set('port', 5000);

// POST '/' 
// PARAM patient_id 患者番号
app.post('/', function(req, res) {
  // リクエストボディを取得する
  console.log(req.body);
  const patient_id = req.body.patient_id;
  if (patient_id) {
    const username = 'ormaster';
    const pswd = 'ormaster';
    var options = {
      host: '[IP]',
      port: 8000,
      path: '/api01rv2/patientgetv2?id=' + patient_id,
      headers: {
        'Authorization': 'Basic ' + new Buffer(username + ':' + pswd).toString('base64')
      }
    };

    var http = require('http');
    var data = null;
    http.get(options, function(res_) {
      res_.on('data', function(chunk) {
        data += chunk.toString();
      }).on('end', function() {
        var xml = '<root>' + data + '</root>';
        parseString(xml, function(err, result) {
          if (result) {
            const patient_name =
              result.root.xmlio2[0].patientinfores[0].Patient_Information[0].WholeName[0]._;
            res.json({ 'data': { 'id': patient_id, 'name': patient_name } });
          }
        });
      });
    }).on("error", function(e) {
      res.json({ 'err': { 'id': patient_id, name: '' } });
      console.log("Got error: " + e.message);
    });
  }
})

app.listen(app.get('port'), function() {
  console.log("Node app is running at localhost:" + app.get('port'))
});
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