vertx的学习总结7之用kotlin 与vertx搞一个简单的http

这里我就简单的聊几句，如何用vertx web来搞一个web项目的

1、首先先引入几个依赖，这里我就用maven了，这个是kotlin+vertx web

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>kotlin-vertx</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <kotlin.version>1.8.20</kotlin.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>io.vertx</groupId>
            <artifactId>vertx-core</artifactId>
        </dependency>

        <dependency>
            <groupId>io.vertx</groupId>
            <artifactId>vertx-codegen</artifactId>
        </dependency>

        <dependency>
            <groupId>io.vertx</groupId>
            <artifactId>vertx-service-proxy</artifactId>
        </dependency>

        <dependency>
            <groupId>io.vertx</groupId>
            <artifactId>vertx-web</artifactId>
        </dependency>

        <dependency>
            <groupId>io.vertx</groupId>
            <artifactId>vertx-auth-common</artifactId>
        </dependency>

        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>1.2.3</version>
        </dependency>
        <dependency>
            <groupId>org.jetbrains.kotlinx</groupId>
            <artifactId>kotlinx-coroutines-core</artifactId>
            <version>1.7.1</version>
        </dependency>
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-stdlib-jdk8</artifactId>
            <version>${kotlin.version}</version>
        </dependency>
        <dependency>
            <groupId>org.jetbrains.kotlin</groupId>
            <artifactId>kotlin-test</artifactId>
            <version>${kotlin.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.jetbrains.kotlin</groupId>
                <artifactId>kotlin-maven-plugin</artifactId>
                <version>${kotlin.version}</version>
                <executions>
                    <execution>
                        <id>compile</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                        <configuration>
                            <sourceDirs>
                                <source>src/main/java</source>
                                <source>target/generated-sources/annotations</source>
                            </sourceDirs>
                        </configuration>
                    </execution>
                    <execution>
                        <id>test-compile</id>
                        <phase>test-compile</phase>
                        <goals>
                            <goal>test-compile</goal>
                        </goals>
                    </execution>
                </executions>
                <configuration>
                    <jvmTarget>${maven.compiler.target}</jvmTarget>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <executions>
                    <execution>
                        <id>default-compile</id>
                        <phase>none</phase>
                    </execution>
                    <execution>
                        <id>default-testCompile</id>
                        <phase>none</phase>
                    </execution>
                    <execution>
                        <id>compile</id>
                        <phase>compile</phase>
                        <goals>
                            <goal>compile</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>testCompile</id>
                        <phase>test-compile</phase>
                        <goals>
                            <goal>testCompile</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>io.vertx</groupId>
                <artifactId>vertx-dependencies</artifactId>
                <version>4.4.4</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

2、先创建一个简单的httpweb

package org.example.kotlin_web

import io.vertx.core.AbstractVerticle
import io.vertx.core.Vertx
import io.vertx.core.http.HttpServerOptions
import io.vertx.ext.web.Router
import kotlinx.coroutines.delay

class HttpWeb : AbstractVerticle() {
    override fun start() {
        var router = Router.router(vertx);
        router.get("/hello").handler { context ->
            context.response().end("Hello World")
        };
        vertx.createHttpServer().requestHandler(router).listen(8080)
    }
}
fun main(){
    var vertx = Vertx.vertx();
    vertx.deployVerticle(HttpWeb())
}

这里用了路由，也就是说访问localhost:8080/hello  它会输出Hello World，这个是get请求

3、get请求带参数

package org.example.kotlin_web

import io.vertx.core.AbstractVerticle
import io.vertx.core.Vertx
import io.vertx.ext.web.Router

class HttpWeb : AbstractVerticle() {
    override fun start() {
        var router = Router.router(vertx);
        router.get("/hello").handler { ctx ->
            val name: String = ctx.request().getParam("name")
            // 处理逻辑
            val message = "Hello, $name!"
            // 返回响应
            ctx.response().end(message)
        };
        vertx.createHttpServer().requestHandler(router).listen(8080)
    }
}
fun main(){
    var vertx = Vertx.vertx();
    vertx.deployVerticle(HttpWeb())
}

可以看到非常简单

4、post请求带参数

package org.example.kotlin_web

import io.vertx.core.AbstractVerticle
import io.vertx.core.Vertx
import io.vertx.core.buffer.Buffer
import io.vertx.ext.web.Router
import io.vertx.ext.web.RoutingContext
import io.vertx.ext.web.handler.StaticHandler

class HttpWeb : AbstractVerticle() {
    override fun start() {
        var router = Router.router(vertx);
        router.route().handler(StaticHandler.create("src/main/resources/static").setCachingEnabled(false).setDefaultContentEncoding("UTF-8"));
        router.get("/hello").handler { ctx ->
            val name: String = ctx.request().getParam("name")
            // 处理逻辑
            val message = "Hello, $name!"
            // 返回响应
            ctx.response().end(message)
        };
        router.post().path("/index").handler { ctx: RoutingContext ->
            val request = ctx.request()
            val response = ctx.response()
            response.putHeader("Content-Type", "text/plain; charset=utf-8")
            val formAttributes = request.formAttributes()
            request.bodyHandler { body: Buffer ->
                val formData = body.toString()
                println("Received form data: $formData")
                response.setStatusCode(200)
                response.end("Form submitted successfully")
            }
        }

        vertx.createHttpServer().requestHandler(router).listen(8080)
    }
}
fun main(){
    var vertx = Vertx.vertx();
    vertx.deployVerticle(HttpWeb())
}

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>index</title>
</head>
<body>
<form method="post" action="http://localhost:8080/index">
  姓名:  <input type="text" name="name" ><br>
  密码:  <input type="password" name="password"> <br>
    <input type="submit">
</form>
</body>
</html>

这里的所有代码都写到了同一个文件里面，这样极其的不美观，可以优化一下