vault backup: 2025-07-22 22:14:08

Affected files:
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21.04. Android/Ktor.md

@@ -1,82 +0,0 @@
----
-tags: 
-aliases: 
-date: 2024-06-05
-time: 19:06:00
-description:
----
-
-Ktor是由Kotlin提供的一個framwork。
-要在Android使用Ktor，需要在build.gradle加入以下的dependency:
-```
-implementation "io.ktor:ktor-server-core:2.0.1"            // Ktor的核心包  
-implementation "io.ktor:ktor-server-jetty:2.0.1"           // 供Ktor使用的引擎包，另外有Jetty, Tomcat, CIO可用
-implementation "io.ktor:ktor-gson:1.2.5"
-//    implementation "io.ktor:ktor-server-call-logging:2.0.1"    // 用於印出Request及Response的log用  
-//    implementation "io.ktor:ktor-server-partial-content:2.0.1" // 用於支援PartialContent用  
-//    implementation "io.ktor:ktor-server-cors:2.0.1"            // 用於支援CORS用  
-//    implementation "io.ktor:ktor-server-html-builder:2.0.1"    // 用於回傳客製html用
-```
-
-在`packagingOptions`裡，也需要加入以下的設定來必面編譯問題[[Ktor#^68d958 ]] ：
-```
-packagingOptions {
-    exclude 'META-INF/*'
-}
-```
-
-在`AndroidManifest.xml`中，記得加入internet的權限：
-```
-<uses-permission android:name="android.permission.INTERNET"/>
-```
-
-然後就是 HTTP Server 的 code 了，注意 Netty 在 Android 上不能用，要改用 Jetty 或是 CIO：
-```kotlin
-import io.ktor.server.jetty.Jetty  
-import io.ktor.server.engine.embeddedServer  
-import io.ktor.server.routing.routing  
-import io.ktor.server.routing.get  
-import io.ktor.server.application.*  
-import io.ktor.server.response.respondText
-
-embeddedServer(Jetty, 9000) {  
-    routing {  
-        get("/") {  
-            call.respondText("Hello, world!")  
-        }  
-    }
-}.start(wait = false)
-```
-
-但是這段code會block，所以需要一個thread把它包起來：
-```kotlin
-Thread {
-    httpEngine = embeddedServer(Netty, 8080) {  
-        install(ContentNegotiation) {  
-            gson {}  
-        } 
-        routing {  
-            get("/") {  
-                call.respond(mapOf("message" to "Hello world"))  
-            }  
-
-            get("/say/{something}") {  
-                call.respond(mapOf("message" to "You say: " + call.parameters["something"]))  
-
-                activity?.findViewById<TextView>(R.id.textView)?.text = "You say: " + call.parameters["something"]  
-            }  
-        } 
-    }.start(wait = false)  
-}.start()
-```
-
-
-# 參考來源
-
-- 如果沒有這一段會產生如下錯誤 ^68d958
-```
-13 files found with path 'META-INF/INDEX.LIST'.
-Adding a packagingOptions block may help, please refer to
-https://developer.android.com/reference/tools/gradle-api/7.4/com/android/build/api/dsl/ResourcesPackagingOptions
-for more information
-```