How to pass token from Nodejs to backend Java code - node.js

Question

I am new to Nodejs .
I am trying to pass JWT token from Nodejs to java service class.
I am getting JWT token in a variable in Nodejs code that I need to pass to spring mvc application service class.
can anyone please help me on this?
And having confusion with how to integrate Nodejs with java if i pass variable from Nodejs to java?
Node code is,
module.exports = {
verifyReq: function (req, res, next) {
if (req.headers.authorization) {
res.setHeader('Content-Type', 'text/html');
res.write('<div id="_mscontent"><script src="URL"></script>');
var notAuthorized = false;
var authorization = req.headers.authorization;
console.log("authorization: " + authorization);
if (authorization) {
req.isAuthorized = true;
}
try {
var decodedJWT = JWT.decode(authorization.split(' ')[1], "", true);
} catch (e) {
notAuthorized = true;
}
else {
req.isAuthorized = false;
res.status(401);
res.end('Not Authorized!');
return;
}
return req.isAuthorized === true;
}
};
Java Code,
public class GetCarAssetValuesService {
private static String output;
private static String token;
private static Asset[] myObjects;
public void getAssets(String tokenToPass)
throws JsonParseException, JsonMappingException, IOException, JSONException {
System.out.println("In service");
HttpsURLConnection myURLConnection = null;
InputStream inputStream = null;
InputStreamReader inputStreamReader = null;
BufferedReader bufferedReader = null;
StringBuilder strBuilder = new StringBuilder();
JSONObject jsonObj = new JSONObject(tokenToPass);
System.out.println("success_token= " + jsonObj);
token = jsonObj.getString("access_token");
System.out.println("Print token= " + token);
try {
URL url = new URL(
"Third Party URL");
myURLConnection = (HttpsURLConnection) url.openConnection();
String bearerAuth = "Bearer " + token;
myURLConnection.setRequestProperty("Authorization", bearerAuth);
myURLConnection.setRequestMethod("GET");
myURLConnection.setRequestProperty("Content-Type", "application/json");
myURLConnection.setDoOutput(true);
inputStream = myURLConnection.getInputStream();
inputStreamReader = new InputStreamReader(inputStream);
bufferedReader = new BufferedReader(inputStreamReader);
if (myURLConnection.getResponseCode() != 200) {
throw new RuntimeException("Failed : HTTP error code : " + myURLConnection.getResponseCode());
}
System.out.println("Here the control cars...");
System.out.println("Output from Server .... \n");
while ((output = bufferedReader.readLine()) != null) {
strBuilder.append(output);
System.out.println(output);
}
myURLConnection.disconnect();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
String mindsphereResponse = strBuilder.toString();
System.out.println("Responsesssssss" + mindsphereResponse);
ObjectMapper mapper = new ObjectMapper();
myObjects = mapper.readValue(mindsphereResponse, Asset[].class);
}
Here instead of passing "tokenToPass" i want to get this token from node js i.e.decodeJWT. This "tokenToPass" i am getting from other java service now i want it from Nodejs.
Thanks in Advance..!!!

Answer 1

You can set the JWT token in the HTTP Request header ( nodejs ) and API endpoint ( java ) can be get it from there.
HelloController.java
#Controller
public class HomeController {
#Autowire
private HomeService homeService;
#GetMapping("/hello")
public String home(HttpServletRequest request, Model model) {
helloService.invoke(request.getHeader('JWT_TOKEN_KEY'));
}
}
HelloService.java
#Service
public class HelloService {
public void invoke(jwtToken) {
// Use this jwttoken
}
}
NodeJS.js
var options = {
host: 'your_java_api_endpoint',
port: 80,
path: '/hello',
headers:{
'JWT_TOKEN_KEY':'json web token here'
}
};
http.get(options, function(res) {
res.on("data", function(responseData) {
console.log("data: " + responseData);
});
}).on('error', function(e) {
console.log("http error : " + e);
});