サーバサイドKotlinへの入門 Ktor編

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     Kotlin
    Ktor 1 
      Copyright © 2019 Toranoana Inc. All Rights Reserved.
2. ,' ,' ,' ,' , ' ,' +) %" #( • 2019 3!& • *Java  • .- /$ •   –  
   0 – &  2 Copyright © 2019 Toranoana Inc. All Rights Reserved.
3.          1. Kotlin
   2.   3. Ktor  4.  (Routing) 5.  (Locations) 6. Basic! (Authenticaton) 7.  3 Copyright © 2019 Toranoana Inc. All Rights Reserved.
4. % $ % $ % $ % $ % $ % $ 1.Kotlin 
   # *" →SparkFramework!Java/Kotlin  Java 
    & Kotlin*"+ Java '()  4 Copyright © 2019 Toranoana Inc. All Rights Reserved.
5. . + . + . + . + . + . + 2.) • Ktor JetBrains*# Web 1.0.0
   2018"11$  (! 1.2.1(2019/5/27) Kotlin)1 %&, 0/ '-Features# 5 Copyright © 2019 Toranoana Inc. All Rights Reserved.
6.        3.Ktor
    https://start.ktor.io/ 6 Copyright © 2019 Toranoana Inc. All Rights Reserved.
7.        3.Ktor  IntellijKtor 
      7 Copyright © 2019 Toranoana Inc. All Rights Reserved.
8.        3.Ktor
    9  Features Routing Locations Authentication Copyright © 2019 Toranoana Inc. All Rights Reserved.
9. + ) + ) + ) + ) + ) + ) 3.Ktor  10 fun main(args: Array<String>) { val server = embeddedServer(Netty, 8080) { this.module(false) } server.start(wait = true) } fun Application.module(testing: Boolean = false) { routing { get("/") { call.respondText("HELLO WORLD!", contentType = ContentType.Text.Plain) } } } Application.kt #'! $*"-& ,. "!!!/Netty "/8080 " 
   HELLOWORLD! "%( Copyright © 2019 Toranoana Inc. All Rights Reserved.
10.        3.Ktor
     11 Copyright © 2019 Toranoana Inc. All Rights Reserved.
11.        4.  (Routing) 12 Copyright © 2019 Toranoana Inc. All Rights Reserved. 
      • /user/{name} {name} 
12.        4.  (Routing) 13 fun Application.module(testing: Boolean = false) { routing { get("/") { call.respondText("HELLO WORLD!", contentType = ContentType.Text.Plain) } } get("/user/{name}") { val name = call.parameters["name"] ?: "" call.respondText("Hi! $name") } }
    http://localhost:8080/user/tora 
    Hi! tora Copyright © 2019 Toranoana Inc. All Rights Reserved.
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     14 Copyright © 2019 Toranoana Inc. All Rights Reserved. 4.(Routing)
14.        5.  (Locations) 15 Copyright © 2019 Toranoana Inc. All Rights Reserved. 
      • /type/{name} • /type/{name}/edit • /type/{name}/list/{page} type   
15.        5.  (Locations) 16 fun Application.module(testing: Boolean = false) { install(Locations) { } routing { // Register nested routes get<Type> { type -> call.respondText("Inside $type") } get<Type.Edit> { edit -> call.respondText("Inside $edit") } get<Type.List> { list -> call.respondText("Inside $list") } } } @Location("/type/{name}") data class Type(val name: String) { @Location("/edit") data class Edit(val type: Type) @Location("/list/{page}") data class List(val type: Type, val page: Int) }
    http://localhost:8080/type/tora    
    Type Copyright © 2019 Toranoana Inc. All Rights Reserved.
16.        17 fun Application.module(testing: Boolean = false) { install(Locations) { } routing { // Register nested routes get<Type> { type -> call.respondText("Inside $type") } get<Type.Edit> { edit -> call.respondText("Inside $edit") } get<Type.List> { list -> call.respondText("Inside $list") } } } @Location("/type/{name}") data class Type(val name: String) { @Location("/edit") data class Edit(val type: Type) @Location("/list/{page}") data class List(val type: Type, val page: Int) }
    http://localhost:8080/type/tora    Type Copyright © 2019 Toranoana Inc. All Rights Reserved. 5.  (Locations)
17.        18 Type  nametora
     Copyright © 2019 Toranoana Inc. All Rights Reserved. 5.  (Locations)
18.        19 fun Application.module(testing: Boolean = false) { install(Locations) { } routing { // Register nested routes get<Type> { type -> call.respondText("Inside $type") } get<Type.Edit> { edit -> call.respondText("Inside $edit") } get<Type.List> { list -> call.respondText("Inside $list") } } } @Location("/type/{name}") data class Type(val name: String) { @Location("/edit") data class Edit(val type: Type) @Location("/list/{page}") data class List(val type: Type, val page: Int) } NestLocation 
    /type/{name}/edit
    /type/{name}/list/{page} 5.   (Locations)
19.        20 Edit 
     List 
     Copyright © 2019 Toranoana Inc. All Rights Reserved. 5.   (Locations)
20. '# '# '# '# ' # '# 6.Basic*)(Authenticaton) 21 fun Application.module(testing: Boolean = false) { install(Authentication) { basic(name = "myauth1") { realm = "Ktor Server" validate { credentials -> if (credentials.name == credentials.password) { UserIdPrincipal(credentials.name) } else { null } } } } ( $) ($) routing { authenticate("myauth1") { get("/basic") { val principal = call.authentication.principal<UserIdPrincipal>() call.respondText("Hi ${principal?.name ?: ""}", contentType = ContentType.Text.Plain) } } } } *)! +myauth1 valiate *)!"%+ name password&( &
      Copyright © 2019 Toranoana Inc. All Rights Reserved.
21. !  !  !  !  !  !  22 fun Application.module(testing: Boolean = false) { install(Authentication) { basic(name = "myauth1") { realm = "Ktor Server" validate { credentials -> if (credentials.name == credentials.password) { UserIdPrincipal(credentials.name) } else { null } } } } ( ) ( ) routing { authenticate("myauth1") { get("/basic") { val principal = call.authentication.principal<UserIdPrincipal>() call.respondText("Hi ${principal?.name ?: ""}", contentType = ContentType.Text.Plain) } } } }
    http://localhost:8080/basic  Basic#"  #"$ #"   Copyright © 2019 Toranoana Inc. All Rights Reserved. 6.Basic#"(Authenticaton)
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     23 Copyright © 2019 Toranoana Inc. All Rights Reserved. 6.Basic(Authenticaton)
23. = : = : = : = : = : = : 7.  • Intellij Ktor#%( Ktor#' 6; • &)( 29A – ()! Routing – )%,8Locations "%$ .40
     /5+7*> )%31Validation-< • @? Features82
     24 Copyright © 2019 Toranoana Inc. All Rights Reserved.
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       25 Copyright © 2019 Toranoana Inc. All Rights Reserved.