405 method not found on executing post request on postman client - rest

Question

Whenever I am executing a POST request an error "405 method not found" is coming, although I have included a required POST method in it. I don't know why the error is coming.
i had tried a lot, I am not getting what the problem is. Please help me out with the same.
My resource file is :
#Path("/customer")
public class CustomerResource {
CustomerDao service = new CustomerDao();
#GET
#Path("/greet")
public String greetCustomer() {
return "Hello, Welcome to our site !!";
}
#GET
#Path("/{name}")
public String getCustomerByName(#PathParam("name") String name) {
return service.getCustomerByName(name).toString();
}
#GET
#Path("/{firstname}-{lastname}")
public String getCustomerByName(#PathParam("firstname") String first,
#PathParam("lastname") String last) {
Collection<Customer> customerCollection = service.getAllCustomers();
for (Customer customer : customerCollection) {
if (customer.getFirstname().equalsIgnoreCase(first)
&& customer.getLastname().equalsIgnoreCase(last)) {
return customer.toString();
}
}
return "Customer with " + first + " " + last + "not found";
}
#GET
#Path("/range/{start}")
#Produces("text/plain")
public String getCustomersInRange(#QueryParam("start") int start) {
List<Customer> allCustomerList = new ArrayList<Customer>(service.getAllCustomers());
List<Customer> customerListInRange = new ArrayList<Customer>();
if (start < allCustomerList.size()) {
for (int i = start; i < allCustomerList.size(); i++) {
customerListInRange.add(allCustomerList.get(i));
}
return customerListInRange.toString();
} else {
return "No customers in this range";
}
}
#POST
#Path("/add")
#Consumes("application/x-www-form-urlencoded")
public String createCustomer(#FormParam("firstname") String first,
#FormParam("lastname") String last) {
Customer newCustomer = new Customer();
newCustomer.setFirstname(first);
newCustomer.setLastname(last);
service.addCustomer(newCustomer);
return newCustomer.toString();
}
#PUT
#Path("/{id}")
#Produces("text/plain")
#Consumes("application/x-www-form-urlencoded")
public String updateCustomer(#PathParam("id") int id,
#FormParam("firstname") String first,
#FormParam("lastname") String last) {
System.out.println(first + " " + last);
Customer customer = service.updateCustomer(id, first, last);
if (customer != null) {
return "Updated Customer : " + customer.toString();
} else {
return "Customer with this id : " + id + "not found";
}
}
#DELETE
#Path("/{id}")
#Produces("text/plain")
public String deleteCustomer(#PathParam("id") int id) {
Customer customer = service.deleteCustomer(id);
if (customer != null) {
return "Deleted Customer: " + customer.toString();
} else {
return "Customer with id : " + id + "was not found";
}
}
}
And my service file is:
public class CustomerDao {
static private List<Customer> customerList = new ArrayList<Customer>();
static {
customerList.add(new Customer(101, "Roy", "Singh", "roy#gmail.com", "Pune"));
customerList.add(new Customer(102, "Joy", "Jackson", "joy#gmail.com", "Nagpur"));
customerList.add(new Customer(103, "Soy", "Nichol", "soy#gmail.com", "Mumbai"));
customerList.add(new Customer(104, "Toy", "Sim", "toy#gmail.com", "Nasik"));
customerList.add(new Customer(105, "Robin", "Singh", "john#gmail.com", "Nasik"));
}
public Customer getCustomerById(int id) {
for (Customer cust : customerList) {
if (cust.getId() == id) {
return cust;
}
}
return null;
}
public Customer getCustomerByName(String name) {
for (Customer cust : customerList) {
if (cust.getFirstname().equals(name)) {
return cust;
}
}
return null;
}
public List<Customer> getAllCustomers() {
return customerList;
}
public List<Customer> getCustomersByCity(String city) {
List<Customer> customersByCity = new ArrayList<Customer>();
for (Customer cust : customerList) {
if (cust.getCity().equals(city)) {
customersByCity.add(cust);
}
}
return customersByCity;
}
public void addCustomer(Customer cust) {
customerList.add(cust);
}
public Customer updateCustomer(int id, String firstname, String lastname) {
List<Customer> customers = getAllCustomers();
for (Customer customer : customers) {
if (customer.getId() == id) {
customer.setFirstname(firstname);
customer.setLastname(lastname);
return customer;
}
}
return null;
}
public Customer deleteCustomer(int id) {
List<Customer> customers = getAllCustomers();
for (Customer customer : customers) {
if (customer.getId() == id) {
customers.remove(customer);
return customer;
}
}
return null;
}
}
The path am using is :
http://localhost:8080/CustomerServiceApp/rest/customer/add
The error am getting on postman is:
405 method not allowed
The exception occured is:
org.apache.wink.server.internal.registry.ResourceRegistry - The system cannot find any method in the resource.CustomerResource class that supports POST. Verify that a method exists.
org.apache.wink.server.internal.RequestProcessor - The following error occurred during the invocation of the handlers chain: WebApplicationException (405) with message 'null' while processing POST request sent to http://localhost:8080/CustomerServiceApp/rest/customer/add