add fetch service

build.gradle

@@ -33,7 +33,8 @@ dependencies {
 	
 	implementation 'org.springframework.cloud:spring-cloud-starter-config'
 	implementation 'org.springframework.cloud:spring-cloud-starter-bootstrap:3.0.2'
-	implementation "io.springfox:springfox-boot-starter:3.0.0"
+	implementation 'io.springfox:springfox-boot-starter:3.0.0'
+	implementation group: 'com.googlecode.json-simple', name: 'json-simple', version: '1.1.1'
 }
 
 dependencyManagement {

src/main/java/com/student/details/controllers/DetailsController.java

@@ -3,10 +3,10 @@ package com.student.details.controllers;
 import com.student.details.exceptions.ResourceNotFoundException;
 import com.student.details.models.Student;
 import com.student.details.services.StudentService;
+import org.json.simple.JSONObject;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
-
 import java.util.List;
 import java.util.Map;
 
@@ -18,6 +18,12 @@ public class DetailsController {
   @Autowired
   StudentService studentService;
 
+  @GetMapping("/students/demo")
+  public JSONObject fetchDemo() {
+    return studentService.fetchService("https://opentdb.com/api.php?amount=10");
+  }
+
+
   @GetMapping("/students")
   public List<Student> getAllStudents() {
 //    System.out.println("This is the students index route.");

src/main/java/com/student/details/services/StudentService.java

@@ -2,13 +2,13 @@ package com.student.details.services;
 import com.student.details.exceptions.ResourceNotFoundException;
 import com.student.details.models.Student;
 import com.student.details.repositories.StudentRepository;
+import org.json.simple.JSONObject;
+import org.json.simple.parser.JSONParser;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
-
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Optional;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.*;
 
 @Service
 public class StudentService {
@@ -16,12 +16,41 @@ public class StudentService {
     @Autowired
     StudentRepository studentRepository;
 
+    public JSONObject fetchService(String stringUrl) {
+        System.out.println("demo api");
+        try {
+            URL url = new URL(stringUrl);
+            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
+            conn.setRequestMethod("GET");
+            conn.connect();
+
+            int responseCode = conn.getResponseCode();
+            if (responseCode != 200) {
+                throw new RuntimeException("" + responseCode);
+            } else {
+                String res = "";
+                Scanner scanner = new Scanner(url.openStream());
+
+                while (scanner.hasNext()) {
+                    String nextVal = scanner.nextLine();
+                    res += nextVal;
+                }
+
+                JSONParser parser = new JSONParser();
+                JSONObject json = (JSONObject) parser.parse(res);
+                return json;
+            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        return new JSONObject();
+    }
 
     public List<Student> findAllStudents() {
         return studentRepository.findAll();
     }
 
-
     public Student addStudent(Student student) {
         return studentRepository.save(student);
     }