今天我们尝试kotlin整合vertx，并决定建立一个非常简单的web应用程序，使用kotlin和vertx作为编程语言进行编码构建。
生成项目
打开控制台窗口执行以下代码进行生成一个maven项目
复制代码 代码如下:
mvn archetype:generate -dgroupid=com.edurt.kvi -dartifactid=kotlin-vertx-integration -darchetypeartifactid=maven-archetype-quickstart -dversion=1.0.0 -dinteractivemode=false
修改pom.xml增加java和kotlin的支持
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<project xmlns="http://maven.apache.org/pom/4.0.0" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://maven.apache.org/pom/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelversion>4.0.0</modelversion> <groupid>com.edurt.kvi</groupid> <artifactid>kotlin-vertx-integration</artifactid> <packaging>jar</packaging> <version>1.0.0</version> <name>kotlin-vertx-integration</name> <description>kotlin vertx integration is a open source kotlin vertx integration example.</description> <!-- properties --> <properties> <!-- dependency --> <dependency.kotlin.version>1.2.71</dependency.kotlin.version> <dependency.vertx.ersion>3.4.1</dependency.vertx.ersion> <!-- plugin --> <plugin.maven.compiler.version>3.3</plugin.maven.compiler.version> <plugin.maven.javadoc.version>2.10.4</plugin.maven.javadoc.version> <plugin.maven.kotlin.version>1.2.71</plugin.maven.kotlin.version> <!-- environment --> <environment.compile.java.version>1.8</environment.compile.java.version> <project.build.sourceencoding>utf-8</project.build.sourceencoding> <project.reporting.outputencoding>utf-8</project.reporting.outputencoding> <java.version>1.8</java.version> <jvmtarget>1.8</jvmtarget> </properties> <!-- dependencys --> <dependencies> <!-- kotlin --> <dependency> <groupid>org.jetbrains.kotlin</groupid> <artifactid>kotlin-stdlib-jdk8</artifactid> <version>${dependency.kotlin.version}</version> </dependency> <dependency> <groupid>org.jetbrains.kotlin</groupid> <artifactid>kotlin-reflect</artifactid> <version>${dependency.kotlin.version}</version> </dependency> <!-- vertx --> <dependency> <groupid>io.vertx</groupid> <artifactid>vertx-core</artifactid> <version>${dependency.vertx.ersion}</version> </dependency> <dependency> <groupid>io.vertx</groupid> <artifactid>vertx-web</artifactid> <version>${dependency.vertx.ersion}</version> </dependency> </dependencies> <!-- prerequisites --> <prerequisites> <maven>3.5.0</maven> </prerequisites> <!-- build --> <build> <sourcedirectory>${project.basedir}/src/main/kotlin</sourcedirectory> <testsourcedirectory>${project.basedir}/src/test/kotlin</testsourcedirectory> <plugins> <plugin> <artifactid>kotlin-maven-plugin</artifactid> <groupid>org.jetbrains.kotlin</groupid> <configuration> <args> <arg>-xjsr305=strict</arg> </args> <compilerplugins> <plugin>spring</plugin> <plugin>jpa</plugin> <plugin>all-open</plugin> </compilerplugins> <pluginoptions> <option>all-open:annotation=javax.persistence.entity</option> </pluginoptions> </configuration> <dependencies> <dependency> <groupid>org.jetbrains.kotlin</groupid> <artifactid>kotlin-maven-allopen</artifactid> <version>${plugin.maven.kotlin.version}</version> </dependency> <dependency> <groupid>org.jetbrains.kotlin</groupid> <artifactid>kotlin-maven-noarg</artifactid> <version>${plugin.maven.kotlin.version}</version> </dependency> </dependencies> <executions> <execution> <id>kapt</id> <goals> <goal>kapt</goal> </goals> <configuration> <sourcedirs> <sourcedir>src/main/kotlin</sourcedir> </sourcedirs> <annotationprocessorpaths> <annotationprocessorpath> <groupid>org.springframework.boot</groupid> <artifactid>spring-boot-configuration-processor</artifactid> <version>${project.parent.version}</version> </annotationprocessorpath> </annotationprocessorpaths> </configuration> </execution> </executions> </plugin> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-compiler-plugin</artifactid> <version>${plugin.maven.compiler.version}</version> <configuration> <source>${environment.compile.java.version}</source> <target>${environment.compile.java.version}</target> </configuration> </plugin> <plugin> <groupid>org.apache.maven.plugins</groupid> <artifactid>maven-javadoc-plugin</artifactid> <version>${plugin.maven.javadoc.version}</version> <configuration> <aggregate>true</aggregate> <!-- custom tags --> <tags> <tag> <name>description</name> <placement>test</placement> <head>description</head> </tag> </tags> <!-- close jdoclint check document --> <additionalparam>-xdoclint:none</additionalparam> </configuration> </plugin> </plugins> </build></project> |
添加vertx实例
创建coreverticle类文件
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package com.edurt.kvi.coreimport io.vertx.core.abstractverticleimport io.vertx.core.futureimport io.vertx.core.handlerimport io.vertx.ext.web.routerimport io.vertx.ext.web.routingcontextclass coreverticle : abstractverticle() { override fun start(startfuture: future<void>?) { val router = createrouter() val port = config().getinteger("http.port", 8080) vertx.createhttpserver() .requesthandler { router.accept(it) } .listen(port) { result -> if (result.succeeded()) { startfuture?.complete() } else { startfuture?.fail(result.cause()) } } } private fun createrouter() = router.router(vertx).apply { get("/").handler(handlerroot) } /** * create router instance */ val handlerroot = handler<routingcontext> { req -> req.response().end("hello kotlin vertx integration!") }} |
设置启动类
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package com.edurt.kviimport com.edurt.kvi.core.coreverticleimport io.vertx.core.vertxclass kotlinvertxintegrationfun main(args: array<string>) { val vertx = vertx.vertx() vertx.deployverticle(coreverticle::class.java.name)} |
以上操作在vertx.deployverticle阶段执行了部署verticle的操作，即部署coreverticle。
启动应用后浏览器访问http://localhost:8080出现以下页面
增加页面渲染功能
修改pom.xml文件增加页面依赖
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<dependency.slf4j.version>1.7.25</dependency.slf4j.version><dependency> <groupid>io.vertx</groupid> <artifactid>vertx-web-templ-thymeleaf</artifactid> <version>${dependency.vertx.ersion}</version></dependency><dependency> <groupid>org.slf4j</groupid> <artifactid>slf4j-log4j12</artifactid> <version>${dependency.slf4j.version}</version></dependency> |
增加页面渲染文件
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package com.edurt.kvi.routerimport io.vertx.ext.web.routerimport io.vertx.ext.web.routingcontextimport io.vertx.ext.web.templ.thymeleaftemplateengineimport org.thymeleaf.templatemode.templatemodeclass homeviewrouterfun index(r: router) { val engine = thymeleaftemplateengine.create().setmode(templatemode.html) r.get("/index.html").handler { c -> render(c, engine, "templates/index.html") }}fun render(c: routingcontext, engine: thymeleaftemplateengine, templ: string) { engine.render(c, templ) { res -> if (res.succeeded()) { c.response().end(res.result()) } else { c.fail(res.cause()) } }} |
在templates/index.html目录下创建页面文件
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<!doctype html system "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-4.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head> <title>kotlin vertx integration</title> <meta http-equiv="content-type" content="text/html; charset=utf-8"/></head><body><p>welcome to kotlin vertx integration!</p></body></html> |
修改coreverticle增加页面跳转
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package com.edurt.kvi.coreimport com.edurt.kvi.router.indeximport io.vertx.core.abstractverticleimport io.vertx.core.futureimport io.vertx.core.handlerimport io.vertx.core.vertximport io.vertx.core.http.httpserverresponseimport io.vertx.ext.web.routerimport io.vertx.ext.web.routingcontextclass coreverticle : abstractverticle() { override fun start() { val router = createrouter(vertx) // go to index page index(router) vertx.createhttpserver().requesthandler { handler -> router.accept(handler) }.listen(8080)// val port = config().getinteger("http.port", 8080)// vertx.createhttpserver()// .requesthandler { router.accept(it) }// .listen(port) { result ->// if (result.succeeded()) {// startfuture?.complete()// } else {// startfuture?.fail(result.cause())// }// } } private fun createrouter() = router.router(vertx).apply { get("/").handler(handlerroot) } /** * create router instance */ val handlerroot = handler<routingcontext> { req -> req.response().end("hello kotlin vertx integration!") } fun createrouter(v: vertx): router { var router = router.router(v) router.route("/").handler { c -> c.response().end("hello kotlin vertx integration!") } router.route("/index").handler { c -> c.response().html().end("hello kotlin vertx integration page!") } return router } fun httpserverresponse.html(): httpserverresponse { return this.putheader("content-type", "text/html") }} |
启动应用后浏览器访问http://localhost:8080/index.html出现以下页面
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://segmentfault.com/a/1190000018311021
