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RESTING ON HTTPDEVELOPER WEEK - 17.06.2015
WHO AM I?Maximilian Berghoff
Mayflower GmbH (Würzburg)
ABOUT?
REST = HTTP?
HTTP
GET /info HTTP/1.1Host: www.expamle.devContentType: text/html
Header Request
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF8"> <title>Information</title></head><body> <h1>Information about this page</h1> <p>Here you will get your information</p></body></html>
Content der Response
HTTP/1.1 200 OKContentType: text/html; charset=UTF8..
Header Response
STATUS CODES1XX - Bearbeitung dauert an (Intermediate)2XX - Anfrage Erfolgreich3XX - Umleitungen4XX - Fehler in der Anfrage/beim Client5XX - Fehler am Server
METHOD
SAVE METHOD?
GET
GET /BLOG/2/EDIT
GET /BLOG/2/EDIT
POST / PUT
POST
POST /users HTTP/1.1Host: www.example.devContentType: application/json
"firstName": "Max", "lastName": "Berghoff"
POST request
HTTP/1.1 201 CreatedContentType: application/json;ContentLocation: /users/3
"id": "3", "firstName": "Max", "lastName": "Berghoff"
POST response
PUT
PUT /users/3 HTTP/1.1Host: www.example.devContentType: application/json
"firstName": "Max", "lastName": "Berghoff", "email": "[email protected]"
PUT request
HTTP/1.1 200 OKContentType: application/json;
"id": "3", "firstName": "Max", "lastName": "Berghoff", "email": "[email protected]"
POST response
PATCH
POST / PUT / PATCH
DELETE
DELETE /users/3 HTTP/1.1Host: www.example.dev
DELETE request
HTTP/1.1 204 No ContentLocation: /users
DELETE response
OPTIONS
HEAD
DISERTATIONARCHITECTURAL STYLES AND THE DESIGN OF NETWORK-BASED SOFTWARE ARCHITECTURES
DOCTOR OF PHILOSOPHY, 2000
4 CONSTRAINTS
1.ADRESSIERBARKEIT
2.REPRÄSENTATIONEN
3.ZUSTANDSLOSIGKEIT
4.OPERATIONEN
RESOURCEN?
JEDE INFORMATION KANNRESOURCE SEIN
(HTML) DokumentBildListe von Resourcen
Alles was Ziel einer Referenz/eines Link sein kann.
REPRÄSENTATIONEN
"userId": "3", "username": "ElectricMaxxx", "firstName": "Max", "lastName": "Berghoff", "email": "[email protected]"
User als JSON
<user> <userId>3</userId> <userName>ElectricMaxxx</userName> <firstName>Maximilian</firstName> <lastName>Berghoff</lastName> <email>[email protected]</email></user>
User als XML
<ul> <li> <strong>Username: </strong> ElectricMaxxx </li> <li> <strong>FirstName: </strong> Max </li> <li> <strong>LastName: </strong> Berghoff </li> <li> <strong>Email: </strong> [email protected] </li></ul>
User als HTML in einem Profil
WIE ERHALTE ICH DIEGEWÜNSCHTE
REPRÄSENTATION?
IN DER URL/users/3.jsonOder /users/3.xmlOder /users/3.html
IM HEADERGET /users/3Content-Type: application/jsonOder Content-Type: application/xmlOder Content-Type: text/html
WIE SOLL RESOURCEAUSSEHEN?
HATEOAS
HYPERMEDIAAS THE ENGINE OF
APPLICATION STATE
WTF?
<?xml version="1.0"?><user> <userName>ElectricMaxxx</userName> <firstName>Maximilian</firstName> <lastName>Berghoff</lastName> <email>[email protected]</email> <link rel="groups" href="/users/3/groups" /> <link rel="roles" href="/users/3/roles" /> <link rel="orders" href="/users/3/orders" /></user>
"_links": "self": "href": "/users/3" ,"userId": "3","_embedded": "orders": [ "_links": "self": "href": "users/3/orders/123" ], "groups": [ "_links": "self": "href": "users/3/orders/2" ]
ZURÜCK AUF NULL
GET /users/3 HTTP/1.1Host: www.expamle.devContentType: application/xml
Request auf User mit der ID 3
HTTP/1.1 200 OKContentType: application/xml
<?xml version="1.0"?><user> <userName>ElectricMaxxx</userName> <firstName>Maximilian</firstName> <lastName>Berghoff</lastName> <email>[email protected]</email> <link rel="groups" href="/users/3/groups" /> <link rel="roles" href="/users/3/roles" /> <link rel="orders" href="/users/3/orders" /></user>
Anwort des Services in XML
CONTRAINTS ERFÜLLT-> REST = HTTP?
NEIN!!!
HYPETEXT TRANSFERPROTOCOL
REPRESENTATIONALSTATE TRANSFER
I LOVE
RESTING ON HTTP
QUESTIONS ?Ask now!Twitter: @ElectricMaxxxMail: [email protected]
THANK YOU!
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