使用Ktor Kotlin处理FreeMaker模板 [英] Handling FreeMaker template with Ktor Kotlin
本文介绍了使用Ktor Kotlin处理FreeMaker模板的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我对Kotlin(和Java)以及Ktor和FreeMaker都很陌生，试图制作一个将所有这些都结合在一起的应用程序，但是看起来我在做与FreeMaker模板操作.
I'm very new to Kotlin (and Java), as well as Ktor and FreeMaker, trying to make an app combining all of them, but looks I'm doing something wrong related to the FreeMaker templates manipulating.
我的应用程序结构为:
template.ftl:
<#macro mainLayout title="Welcome">
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>${title} | Kweet</title>
</head>
<body>
HI
</body>
</html>
</#macro>
index.ftl:
<#import "template.ftl" as layout />
imported title: ${title}
<@layout.mainLayout title="Welcome">
<div class="posts">
<h3 class="content-subhead">Top 10</h3>
</div>
</@layout.mainLayout>
BlogApp.kt:
打包博客
import kotlinx.html.*
import org.jetbrains.ktor.freemarker.*
import org.jetbrains.ktor.host.* // for embededServer
import org.jetbrains.ktor.netty.* // for Netty
import org.jetbrains.ktor.application.*
import org.jetbrains.ktor.features.*
import org.jetbrains.ktor.html.*
import org.jetbrains.ktor.routing.*
import org.jetbrains.ktor.response.*
fun Application.module() {
install(DefaultHeaders)
install(CallLogging)
install(Routing) {
get("/") {
val model = mapOf("id" to 1, "title" to "Hello, World!")
call.respond(FreeMarkerContent("index.ftl", model, "e"))
}
}
}
fun main(args: Array<String>) {
embeddedServer(Netty, 8080, watchPaths = listOf("BlogAppKt"), module = Application::module).start()
}
build.gradle:
group 'Example'
version 'alpha'
buildscript {
ext.kotlin_version = '1.1.4-3'
ext.ktor_version = '0.4.0'
repositories {
mavenCentral()
}
dependencies {
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
apply plugin: 'java'
apply plugin: 'kotlin'
sourceCompatibility = 1.8
repositories {
jcenter()
mavenCentral()
maven { url "http://dl.bintray.com/kotlin/ktor" }
maven { url "https://dl.bintray.com/kotlin/kotlinx" }
}
dependencies {
compile "org.jetbrains.kotlin:kotlin-stdlib-jre8:$kotlin_version"
compile "org.jetbrains.ktor:ktor-core:$ktor_version"
compile "org.jetbrains.ktor:ktor-netty:$ktor_version"
compile "org.jetbrains.ktor:ktor-html-builder:$ktor_version"
compile "org.jetbrains.ktor:ktor-freemarker:$ktor_version"
compile "org.apache.commons:commons-email:1.4"
compile "org.slf4j:slf4j-simple:1.7.25"
compile "ch.qos.logback:logback-classic:1.2.1"
testCompile group: 'junit', name: 'junit', version: '4.12'
}
compileKotlin {
kotlinOptions.jvmTarget = "1.8"
}
compileTestKotlin {
kotlinOptions.jvmTarget = "1.8"
}
kotlin {
experimental {
coroutines "enable"
}
}
jar {
baseName 'abc'
manifest {
attributes 'Main-Class': 'blog.BlogAppKt'
}
from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
}
启动服务器后，我得到以下输出:
I got the below output upon starting the server:
推荐答案
我得到了答案这里
模板加载必须安装为:
import org.jetbrains.ktor.freemarker.*
import freemarker.cache.*; // template loaders live in this package
install(FreeMarker) {
templateLoader = ClassTemplateLoader(TheApp::class.java.classLoader, "templates")
}
然后可以使用call.respond()方法加载保存在resources/templates中的模板:
Then the template saved in resources/templates can be loaded using call.respond() method:
val user = mapOf("title" to "Welcome guy", "name" to "user name", "email" to "user@example.com")
call.respond(FreeMarkerContent("index.ftl", user, "e"))
index.ftl所在的位置:
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>${title} | Kweet</title>
</head>
<body>
<@greet person="${name}"!/>
Your email address is ${email}
<#include "/copyright_footer.html">
</body>
</html>
<#macro greet person color="black">
<font size="+2" color="${color}">Hello ${person}!</font>
</#macro>
我发现这也是学习FTL模板的良好启动.
I found this also to be a good startup for learning FTL template.
这篇关于使用Ktor Kotlin处理FreeMaker模板的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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