No provider classes found: when running Jersey RES

问题:

I tried working on it. But,not able to figure out the issue since I'm quite new to this. I have attached several screenshots to see the issue I'm facing right now.

@Path("/emp")
public class EmployeeService {

@GET
@Path("/emp/{empID}")
@Produces(MediaType.APPLICATION_XML)
public Employee getEmployee(@PathParam(value = "empID") String empID) {
    Employee employee = new Employee();
    employee.setEmailId(empID);
    employee.setName("Rony John");
    employee.setEmailId("[e-mail]");
    return employee;
}

@POST
@Path("/create")
@Consumes(MediaType.APPLICATION_XML)
@Produces(MediaType.APPLICATION_XML)
public Employee createEmployee(Employee employee) {
    // Create logic
    return employee;

}

@POST
@Path("/update")
@Consumes(MediaType.APPLICATION_XML)
@Produces(MediaType.APPLICATION_XML)
public Employee updateEmployee(Employee employee) {
    employee.setName(employee.getName() + " updated");
    return employee;
}

@DELETE
@Path("/delete/{empID}")
public Response deleteEmployee(@PathParam(value = "empID") String empID) {
    return Response.status(200)
            .entity("Employee with " + empID + " is deleted successfully.")
            .build();

}

}

回答1:

The lack of providers is not relevant, it just means you don't have any.

You have an index.jsp, but if you mapped the Jersey filter at the context root (/), it's rightfully saying there's no resource there - based on your screenshots you only have one resource, starting at /emp which has sub-resources for the CRUD operations at deeper paths.

Edit: On second look, your index.jsp is in WEB-INF. I don't think it should be based on the fact you appear to be trying to get a simple example together.

So, what do you expect to see at /JerseyRESTCRUD/?