mi primer microservicio

src/main/java/com/app/backend/controller/StudentApiController.java

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+package com.app.backend.controller;
+
+import com.app.backend.model.StudentModel;
+import com.app.backend.service.impl.StudentServiceImpl;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@RequestMapping("/")
+public interface StudentApiController {
+    @GetMapping("/students")
+    public List<StudentModel> getAllStudents();
+    @PostMapping("/newStudent")
+    public StudentModel createStudent(@RequestBody StudentModel newStudent);
+    @GetMapping("/students/{id}")
+    public StudentModel getStudentById(@PathVariable int id);
+}

src/main/java/com/app/backend/controller/impl/StudentApiControllerImpl.java

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+package com.app.backend.controller.impl;
+
+import com.app.backend.controller.StudentApiController;
+import com.app.backend.model.StudentModel;
+import com.app.backend.service.StudentService;
+import com.app.backend.service.impl.StudentServiceImpl;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Bean;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@RestController
+public class StudentApiControllerImpl implements StudentApiController {
+
+    @Autowired
+    StudentService studentService;
+    @Override
+    public List<StudentModel> getAllStudents(){
+        return studentService.getStudentsList();
+    }
+    @Override
+    public StudentModel createStudent(@RequestBody StudentModel newStudent){
+        return studentService.createStudent(newStudent);
+    }
+
+    @Override
+    public StudentModel getStudentById(@PathVariable int id){
+        return studentService.getStudentById(id);
+    }
+}

src/main/java/com/app/backend/model/StudentModel.java

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+package com.app.backend.model;
+
+import java.util.Date;
+
+public class StudentModel {
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    private String firstName;
+
+    public String getPatLastName() {
+        return patLastName;
+    }
+
+    public void setPatLastName(String patLastName) {
+        this.patLastName = patLastName;
+    }
+
+    private String patLastName;
+
+    public String getMatLastName() {
+        return matLastName;
+    }
+
+    public void setMatLastName(String matLastName) {
+        this.matLastName = matLastName;
+    }
+
+    private String matLastName;
+
+    public Date getDateOfBirth() {
+        return dateOfBirth;
+    }
+
+    public void setDateOfBirth(Date dateOfBirth) {
+        this.dateOfBirth = dateOfBirth;
+    }
+
+    private Date dateOfBirth;
+
+    private String email;
+
+    public String getEmail() {
+        return email;
+    }
+
+    public void setEmail(String email) {
+        this.email = email;
+    }
+
+    private String phone;
+
+    public String getPhone() {
+        return phone;
+    }
+
+    public void setPhone(String phone) {
+        this.phone = phone;
+    }
+}

src/main/java/com/app/backend/service/StudentService.java

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+package com.app.backend.service;
+
+import com.app.backend.model.StudentModel;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@Service
+public interface StudentService {
+
+    List<StudentModel> students = new ArrayList<>();
+
+    public List<StudentModel> getStudentsList();
+    public StudentModel createStudent(StudentModel newStudent);
+    public StudentModel getStudentById(int id);
+}

src/main/java/com/app/backend/service/impl/StudentServiceImpl.java

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+package com.app.backend.service.impl;
+
+import com.app.backend.model.StudentModel;
+import com.app.backend.service.StudentService;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class StudentServiceImpl implements StudentService {
+    public List<StudentModel> getStudentsList() {
+        return this.students;
+    }
+    public StudentModel createStudent(StudentModel newStudent){
+        this.students.add(newStudent);
+        return newStudent;
+    }
+    public StudentModel getStudentById(int id){
+        return this.students.get(id);
+    }
+}