How it works…

Once the command has executed successfully, the web application will run on the default Beego port 8080.

Next, executing a GET request from the command line will give you a list of all the employees:

$ curl -X GET http://localhost:8080/employees
[
  {
    "id": 1,
    "firstName": "Foo",
    "lastName": "Bar"
  },
  {
    "id": 2,
    "firstName": "Baz",
    "lastName": "Qux"
  }
]

Let’s understand the program we have written:

import “github.com/astaxie/beego": Here, we imported Beego.
type FirstController struct { beego.Controller }: Here, we defined the FirstController struct type, which contains an anonymous struct field of type beego.Controller because of which FirstController automatically acquires all the methods of beego.Controller.
func (this *FirstController) GetEmployees() { this.Ctx.ResponseWriter.WriteHeader(200) this.Data["json"] = employees this.ServeJSON() } : Here, we defined the GetEmployees handler, which will execute for every GET request for the URL pattern /employees.

In Go, functions or handlers that start with a capital letter are exported functions, which means they are public and can be used outside the program. That’s the reason we have defined all the functions in our program using a capital letter rather than in camel case.

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How it works…