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restful-user-service.go 3.87 KB
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nikhiljindal 提交于 2015-11-30 14:39 . Updating go-restful
package main
import (
"log"
"net/http"
"github.com/emicklei/go-restful"
"github.com/emicklei/go-restful/swagger"
)
// This example is functionally the same as the example in restful-user-resource.go
// with the only difference that is served using the restful.DefaultContainer
type User struct {
Id, Name string
}
type UserService struct {
// normally one would use DAO (data access object)
users map[string]User
}
func (u UserService) Register() {
ws := new(restful.WebService)
ws.
Path("/users").
Consumes(restful.MIME_XML, restful.MIME_JSON).
Produces(restful.MIME_JSON, restful.MIME_XML) // you can specify this per route as well
ws.Route(ws.GET("/").To(u.findAllUsers).
// docs
Doc("get all users").
Operation("findAllUsers").
Returns(200, "OK", []User{}))
ws.Route(ws.GET("/{user-id}").To(u.findUser).
// docs
Doc("get a user").
Operation("findUser").
Param(ws.PathParameter("user-id", "identifier of the user").DataType("string")).
Writes(User{})) // on the response
ws.Route(ws.PUT("/{user-id}").To(u.updateUser).
// docs
Doc("update a user").
Operation("updateUser").
Param(ws.PathParameter("user-id", "identifier of the user").DataType("string")).
Reads(User{})) // from the request
ws.Route(ws.PUT("").To(u.createUser).
// docs
Doc("create a user").
Operation("createUser").
Reads(User{})) // from the request
ws.Route(ws.DELETE("/{user-id}").To(u.removeUser).
// docs
Doc("delete a user").
Operation("removeUser").
Param(ws.PathParameter("user-id", "identifier of the user").DataType("string")))
restful.Add(ws)
}
// GET http://localhost:8080/users
//
func (u UserService) findAllUsers(request *restful.Request, response *restful.Response) {
response.WriteEntity(u.users)
}
// GET http://localhost:8080/users/1
//
func (u UserService) findUser(request *restful.Request, response *restful.Response) {
id := request.PathParameter("user-id")
usr := u.users[id]
if len(usr.Id) == 0 {
response.WriteErrorString(http.StatusNotFound, "User could not be found.")
} else {
response.WriteEntity(usr)
}
}
// PUT http://localhost:8080/users/1
// <User><Id>1</Id><Name>Melissa Raspberry</Name></User>
//
func (u *UserService) updateUser(request *restful.Request, response *restful.Response) {
usr := new(User)
err := request.ReadEntity(&usr)
if err == nil {
u.users[usr.Id] = *usr
response.WriteEntity(usr)
} else {
response.WriteError(http.StatusInternalServerError, err)
}
}
// PUT http://localhost:8080/users/1
// <User><Id>1</Id><Name>Melissa</Name></User>
//
func (u *UserService) createUser(request *restful.Request, response *restful.Response) {
usr := User{Id: request.PathParameter("user-id")}
err := request.ReadEntity(&usr)
if err == nil {
u.users[usr.Id] = usr
response.WriteHeaderAndEntity(http.StatusCreated, usr)
} else {
response.WriteError(http.StatusInternalServerError, err)
}
}
// DELETE http://localhost:8080/users/1
//
func (u *UserService) removeUser(request *restful.Request, response *restful.Response) {
id := request.PathParameter("user-id")
delete(u.users, id)
}
func main() {
u := UserService{map[string]User{}}
u.Register()
// Optionally, you can install the Swagger Service which provides a nice Web UI on your REST API
// You need to download the Swagger HTML5 assets and change the FilePath location in the config below.
// Open http://localhost:8080/apidocs and enter http://localhost:8080/apidocs.json in the api input field.
config := swagger.Config{
WebServices: restful.RegisteredWebServices(), // you control what services are visible
WebServicesUrl: "http://localhost:8080",
ApiPath: "/apidocs.json",
// Optionally, specifiy where the UI is located
SwaggerPath: "/apidocs/",
SwaggerFilePath: "/Users/emicklei/Projects/swagger-ui/dist"}
swagger.InstallSwaggerService(config)
log.Printf("start listening on localhost:8080")
log.Fatal(http.ListenAndServe(":8080", nil))
}
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