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Kotlin
Ktor
1
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,' ,' ,' ,' ,
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• 2019 3!&
• *Java
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1. Kotlin
2.
3. Ktor
4. (Routing)
5. (Locations)
6. Basic! (Authenticaton)
7.
3
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% $ % $ % $ % $ %
$ % $
1.Kotlin
# *"
→SparkFramework!Java/Kotlin
Java
&
Kotlin*"+
Java
'()
4
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. + . + . + . + .
+ . +
2. )
• Ktor
JetBrains*# Web
1.0.02018"11$
(!
1.2.1(2019/5/27)
Kotlin )1 % &,
0/
'-Features#
5
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3.Ktor
https://start.ktor.io/
6
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3.Ktor
IntellijKtor
7
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3.Ktor
9
Features
Routing
Locations
Authentication
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+ ) + ) + ) + ) +
) + )
3.Ktor
10
fun main(args: Array) {
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!
"%(
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3.Ktor
11
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4.
(Routing)
12
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• /user/{name}
{name}
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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
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14
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4.(Routing)
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5.
(Locations)
15
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• /type/{name}
• /type/{name}/edit
• /type/{name}/list/{page}
type
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5. (Locations)
16
fun Application.module(testing: Boolean = false) {
install(Locations) { }
routing {
// Register nested routes
get { type ->
call.respondText("Inside $type")
}
get { edit ->
call.respondText("Inside $edit")
}
get { 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
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17
fun Application.module(testing: Boolean = false) {
install(Locations) { }
routing {
// Register nested routes
get { type ->
call.respondText("Inside $type")
}
get { edit ->
call.respondText("Inside $edit")
}
get { 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
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5.
(Locations)
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18
Type
nametora
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5.
(Locations)
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19
fun Application.module(testing: Boolean = false) {
install(Locations) { }
routing {
// Register nested routes
get { type ->
call.respondText("Inside $type")
}
get { edit ->
call.respondText("Inside $edit")
}
get { 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)
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20
Edit
List
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5.
(Locations)
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'# '# '# '# '
# '#
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()
call.respondText("Hi ${principal?.name ?: ""}",
contentType = ContentType.Text.Plain)
}
}
}
}
*)! +myauth1
valiate
*)!" %+
name password&(
&
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! ! ! ! !
!
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()
call.respondText("Hi ${principal?.name ?: ""}",
contentType = ContentType.Text.Plain)
}
}
}
}
http://localhost:8080/basic
Basic#"
#"$
#"
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6.Basic#"(Authenticaton)
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23
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6.Basic(Authenticaton)
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= : = : = : = : =
: = :
7.
• Intellij Ktor#%(
Ktor#' 6;
• &) (
29A
– ( )!
Routing
– ) %,8Locations
"%$ .40 /5+7*>
) %31Validation-<
• @? Features82
24
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25
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