\u3082\u3057Spring 5\u306b\u521d\u3081\u3066\u89e6\u308c\u308b\u5834\u5408\u306f\u3001Spring 5\u306e\u7279\u5fb4\u3092\u3054\u78ba\u8a8d\u304f\u3060\u3055\u3044\u3002<\/p>\n
Spring WebFlux\uff08\u30b9\u30d7\u30ea\u30f3\u30b0 \u30a6\u30a7\u30d6\u30d5\u30e9\u30c3\u30af\u30b9\uff09<\/h2>\n![\"spring](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/6564821bdaa94e2bdf7b9cb9\/6-0.png\" "\\"\\"")
<\/div>\n\n- \n
Mono: Publisher\u3092\u5b9f\u88c5\u3057\u30010\u307e\u305f\u306f1\u3064\u306e\u8981\u7d20\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n <\/p>\n
Flux: Publisher\u3092\u5b9f\u88c5\u3057\u3001N\u500b\u306e\u8981\u7d20\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\nSpring WebFlux\u306eHello World\u306e\u4f8b\u3002<\/h2>\n![\"spring](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/6564821bdaa94e2bdf7b9cb9\/9-0.png\" "\\"\\"")
<\/div>\nSpring WebFlux\u306eMaven\u306e\u4f9d\u5b58\u95a2\u4fc2<\/h3>\n<project xmlns=\"https:\/\/maven.apache.org\/POM\/4.0.0\" xmlns:xsi=\"https:\/\/www.w3.org\/2001\/XMLSchema-instance\" xsi:schemaLocation=\"https:\/\/maven.apache.org\/POM\/4.0.0 https:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd\">\r\n <modelVersion>4.0.0<\/modelVersion>\r\n <groupId>com.scdev.spring<\/groupId>\r\n <artifactId>SpringWebflux<\/artifactId>\r\n <version>0.0.1-SNAPSHOT<\/version>\r\n <name>Spring WebFlux<\/name>\r\n <description>Spring WebFlux Example<\/description>\r\n \r\n <properties>\r\n <project.build.sourceEncoding>UTF-8<\/project.build.sourceEncoding>\r\n <project.reporting.outputEncoding>UTF-8<\/project.reporting.outputEncoding>\r\n <jdk.version>1.9<\/jdk.version>\r\n <\/properties>\r\n \r\n <parent>\r\n\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t<artifactId>spring-boot-starter-parent<\/artifactId>\r\n\t\t<version>2.0.1.RELEASE<\/version>\r\n\t\t<relativePath\/> <!-- lookup parent from repository -->\r\n\t<\/parent>\r\n\r\n\t<dependencies>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t\t<artifactId>spring-boot-starter-webflux<\/artifactId>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t\t<artifactId>spring-boot-starter-test<\/artifactId>\r\n\t\t\t<scope>test<\/scope>\r\n\t\t<\/dependency>\r\n\r\n\t\t<dependency>\r\n\t\t\t<groupId>io.projectreactor<\/groupId>\r\n\t\t\t<artifactId>reactor-test<\/artifactId>\r\n\t\t\t<scope>test<\/scope>\r\n\t\t<\/dependency>\r\n <\/dependencies>\r\n\t<repositories>\r\n\t\t<repository>\r\n\t\t\t<id>spring-snapshots<\/id>\r\n\t\t\t<name>Spring Snapshots<\/name>\r\n\t\t\t<url>https:\/\/repo.spring.io\/snapshot<\/url>\r\n\t\t\t<snapshots>\r\n\t\t\t\t<enabled>true<\/enabled>\r\n\t\t\t<\/snapshots>\r\n\t\t<\/repository>\r\n\t\t<repository>\r\n\t\t\t<id>spring-milestones<\/id>\r\n\t\t\t<name>Spring Milestones<\/name>\r\n\t\t\t<url>https:\/\/repo.spring.io\/milestone<\/url>\r\n\t\t\t<snapshots>\r\n\t\t\t\t<enabled>false<\/enabled>\r\n\t\t\t<\/snapshots>\r\n\t\t<\/repository>\r\n\t<\/repositories>\r\n\t<pluginRepositories>\r\n\t\t<pluginRepository>\r\n\t\t\t<id>spring-snapshots<\/id>\r\n\t\t\t<name>Spring Snapshots<\/name>\r\n\t\t\t<url>https:\/\/repo.spring.io\/snapshot<\/url>\r\n\t\t\t<snapshots>\r\n\t\t\t\t<enabled>true<\/enabled>\r\n\t\t\t<\/snapshots>\r\n\t\t<\/pluginRepository>\r\n\t\t<pluginRepository>\r\n\t\t\t<id>spring-milestones<\/id>\r\n\t\t\t<name>Spring Milestones<\/name>\r\n\t\t\t<url>https:\/\/repo.spring.io\/milestone<\/url>\r\n\t\t\t<snapshots>\r\n\t\t\t\t<enabled>false<\/enabled>\r\n\t\t\t<\/snapshots>\r\n\t\t<\/pluginRepository>\r\n\t<\/pluginRepositories>\r\n <build>\r\n <plugins>\r\n <plugin>\r\n <groupId>org.springframework.boot<\/groupId>\r\n <artifactId>spring-boot-maven-plugin<\/artifactId>\r\n <\/plugin>\r\n <\/plugins>\r\n <pluginManagement>\r\n <plugins>\r\n <plugin>\r\n <groupId>org.apache.maven.plugins<\/groupId>\r\n <artifactId>maven-compiler-plugin<\/artifactId>\r\n <version>3.7.0<\/version>\r\n <configuration>\r\n <source>${jdk.version}<\/source>\r\n <target>${jdk.version}<\/target>\r\n <\/configuration>\r\n <\/plugin>\r\n <\/plugins>\r\n <\/pluginManagement>\r\n <\/build>\r\n \r\n<\/project>\r\n<\/code><\/pre>\n\u6700\u3082\u91cd\u8981\u306a\u4f9d\u5b58\u95a2\u4fc2\u306f\u3001spring-boot-starter-webflux\u3068spring-boot-starter-parent\u3067\u3059\u3002\u305d\u306e\u4ed6\u306e\u4f9d\u5b58\u95a2\u4fc2\u306f\u3001JUnit\u306e\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002<\/p>\n
\u30b9\u30d7\u30ea\u30f3\u30b0\u306eWebFlux\u30cf\u30f3\u30c9\u30e9<\/h3>\n
Spring WebFlux\u306e\u30cf\u30f3\u30c9\u30e9\u30fc\u30e1\u30bd\u30c3\u30c9\u304c\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3057\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u3068\u3057\u3066Mono\u307e\u305f\u306fFlux\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n
package com.scdev.spring.component;\r\n\r\nimport org.springframework.http.MediaType;\r\nimport org.springframework.stereotype.Component;\r\nimport org.springframework.web.reactive.function.BodyInserters;\r\nimport org.springframework.web.reactive.function.server.ServerRequest;\r\nimport org.springframework.web.reactive.function.server.ServerResponse;\r\n\r\nimport reactor.core.publisher.Mono;\r\n\r\n@Component\r\npublic class HelloWorldHandler {\r\n\r\n\tpublic Mono<ServerResponse> helloWorld(ServerRequest request) {\r\n\t\treturn ServerResponse.ok().contentType(MediaType.TEXT_PLAIN)\r\n\t\t\t.body(BodyInserters.fromObject(\"Hello World!\"));\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8Mono\u304cServerResponse\u306e\u30dc\u30c7\u30a3\u3092\u4fdd\u6301\u3059\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001\u623b\u308a\u5024\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u30bf\u30a4\u30d7\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9\u3001\u304a\u3088\u3073\u30dc\u30c7\u30a3\u3092\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306e\u95a2\u6570\u30c1\u30a7\u30fc\u30f3\u306b\u3082\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
Spring WebFlux\u306e\u30eb\u30fc\u30bf\u30fc<\/h3>\n
\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30eb\u30fc\u30c8\u3092\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306b\u30eb\u30fc\u30bf\u30fc\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u306fRouterFunction\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3057\u3001ServerResponse\u306e\u672c\u4f53\u3082\u4fdd\u6301\u3057\u307e\u3059\u3002<\/p>\n
package com.scdev.spring.component;\r\n\r\nimport org.springframework.context.annotation.Bean;\r\nimport org.springframework.context.annotation.Configuration;\r\nimport org.springframework.http.MediaType;\r\nimport org.springframework.web.reactive.function.server.RequestPredicates;\r\nimport org.springframework.web.reactive.function.server.RouterFunction;\r\nimport org.springframework.web.reactive.function.server.RouterFunctions;\r\nimport org.springframework.web.reactive.function.server.ServerResponse;\r\n\r\n@Configuration\r\npublic class HelloWorldRouter {\r\n\r\n\t@Bean\r\n\tpublic RouterFunction<ServerResponse> routeHelloWorld(HelloWorldHandler helloWorldHandler) {\r\n\r\n\t\treturn RouterFunctions.route(RequestPredicates.GET(\"\/helloWorld\")\r\n .and(RequestPredicates.accept(MediaType.TEXT_PLAIN)), helloWorldHandler::helloWorld);\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u79c1\u305f\u3061\u306f\/helloWorld\u306b\u5bfe\u3057\u3066GET\u30e1\u30bd\u30c3\u30c9\u3092\u516c\u958b\u3057\u3066\u304a\u308a\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u547c\u3073\u51fa\u3057\u306f\u5e73\u6587\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d7\u3051\u5165\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u30b9\u30d7\u30ea\u30f3\u30b0\u30d6\u30fc\u30c8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/h3>\n
\u79c1\u305f\u3061\u306e\u30b7\u30f3\u30d7\u30eb\u306aWebFlux\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092Spring Boot\u3067\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
package com.scdev.spring;\r\n\r\nimport org.springframework.boot.SpringApplication;\r\nimport org.springframework.boot.autoconfigure.SpringBootApplication;\r\n\r\n@SpringBootApplication\r\npublic class Application {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tSpringApplication.run(Application.class, args);\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092\u898b\u308b\u3068\u3001Spring WebFlux\u306b\u95a2\u9023\u3059\u308b\u3082\u306e\u306f\u4f55\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001spring-boot-starter-webflux\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u8ffd\u52a0\u3057\u305f\u305f\u3081\u3001Spring Boot\u306f\u79c1\u305f\u3061\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092Spring WebFlux\u3068\u3057\u3066\u69cb\u6210\u3057\u307e\u3059\u3002<\/p>\n
Java 9\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u30b5\u30dd\u30fc\u30c8<\/h3>\n
\u79c1\u305f\u3061\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306fJava 8\u4e0a\u3067\u5b9f\u884c\u3059\u308b\u6e96\u5099\u304c\u3067\u304d\u3066\u3044\u307e\u3059\u304c\u3001Java 9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001module-info.java\u30af\u30e9\u30b9\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
module com.scdev.spring {\r\n requires reactor.core;\r\n requires spring.web;\r\n requires spring.beans;\r\n requires spring.context;\r\n requires spring.webflux;\r\n requires spring.boot;\r\n requires spring.boot.autoconfigure;\r\n exports com.scdev.spring;\r\n}\r\n<\/code><\/pre>\nSpring WebFlux Spring Boot \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\u3002<\/h3>\n![\"Eclipse](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/6564821bdaa94e2bdf7b9cb9\/29-0.png\" "\\"\\"")
<\/div>\n2018-05-07 15:01:47.893 INFO 25158 --- [ main] o.s.w.r.f.s.s.RouterFunctionMapping : Mapped ((GET && \/helloWorld) && Accept: [text\/plain]) -> com.scdev.spring.component.HelloWorldRouter$$Lambda$501\/704766954@6eeb5d56\r\n2018-05-07 15:01:48.495 INFO 25158 --- [ctor-http-nio-1] r.ipc.netty.tcp.BlockingNettyContext : Started HttpServer on \/0:0:0:0:0:0:0:0:8080\r\n2018-05-07 15:01:48.495 INFO 25158 --- [ main] o.s.b.web.embedded.netty.NettyWebServer : Netty started on port(s): 8080\r\n2018-05-07 15:01:48.501 INFO 25158 --- [ main] com.scdev.spring.Application : Started Application in 1.86 seconds (JVM running for 5.542)\r\n<\/code><\/pre>\n\u30ed\u30b0\u304b\u3089\u306f\u3001\u79c1\u305f\u3061\u306e\u30a2\u30d7\u30ea\u304c\u30dd\u30fc\u30c88080\u4e0a\u306eNetty\u30b5\u30fc\u30d0\u30fc\u3067\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u660e\u78ba\u3067\u3059\u3002\u3055\u3042\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u30c6\u30b9\u30c8\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u6625\u306eWebFlux\u30a2\u30d7\u30ea\u306e\u30c6\u30b9\u30c8<\/h3>\n
\u79c1\u305f\u3061\u306f\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u30a2\u30d7\u30ea\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 (Watashitachi wa samazama na h\u014dh\u014d de apuri o tesuto suru koto ga dekimasu.)<\/p>\n
\n- \n
CURL\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3059\u308b<\/ol>\n<\/li>\n<\/ol>\n$ curl https:\/\/localhost:8080\/helloWorld
\nHello World!
\n$<\/p>\n
\u30d6\u30e9\u30a6\u30b6\u3067URL\u3092\u8d77\u52d5\u3059\u308b<\/p>\n
Spring 5\u306eWebTestClient\u3092\u4f7f\u7528<\/p>\n
\u4ee5\u4e0b\u306f\u3001Spring 5\u306e\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u30a6\u30a7\u30d6\u3092\u4f7f\u7528\u3057\u3066\u5f53\u793e\u306eREST\u30a6\u30a7\u30d6\u30b5\u30fc\u30d3\u30b9\u3092\u30c6\u30b9\u30c8\u3059\u308b\u305f\u3081\u306eJUnit\u30c6\u30b9\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u3002<\/p>\n
“`java
\npackage com.scdev.spring;<\/p>\n
import org.junit.Test;
\nimport org.junit.runner.RunWith;
\nimport org.springframework.beans.factory.annotation.Autowired;
\nimport org.springframework.boot.test.context.SpringBootTest;
\nimport org.springframework.http.MediaType;
\nimport org.springframework.test.context.junit4.SpringRunner;
\nimport org.springframework.test.web.reactive.server.WebTestClient;<\/p>\n
@RunWith(SpringRunner.class)
\n@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
\npublic class SpringWebFluxTest {<\/p>\n
@Autowired
\nprivate WebTestClient webTestClient;<\/p>\n
@Test
\npublic void testHelloWorld() {
\nwebTestClient
\n.get().uri(“\/helloWorld”) \/\/ GET\u30e1\u30bd\u30c3\u30c9\u3068URI
\n.accept(MediaType.TEXT_PLAIN) \/\/ ACCEPT-Content\u3092\u8a2d\u5b9a
\n.exchange() \/\/ \u5fdc\u7b54\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b
\n.expectStatus().isOk() \/\/ \u5fdc\u7b54\u304cOK\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b
\n.expectBody(String.class).isEqualTo(“Hello World!”); \/\/ \u5fdc\u7b54\u306e\u30bf\u30a4\u30d7\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u78ba\u8a8d\u3059\u308b
\n}<\/p>\n
}
\n“`<\/p>\n
\u3053\u308c\u3092JUnit\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u3068\u3057\u3066\u5b9f\u884c\u3057\u3001\u6b63\u5e38\u306b\u30d1\u30b9\u3059\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n
Spring Web Reactive\u304b\u3089WebClient\u3092\u4f7f\u7528\u3059\u308b<\/p>\n
REST\u30a6\u30a7\u30d6\u30b5\u30fc\u30d3\u30b9\u3092\u547c\u3073\u51fa\u3059\u305f\u3081\u306bWebClient\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
“`java
\npackage com.scdev.spring.client;<\/p>\n
import org.springframework.http.MediaType;
\nimport org.springframework.web.reactive.function.client.ClientResponse;
\nimport org.springframework.web.reactive.function.client.WebClient;<\/p>\n
import reactor.core.publisher.Mono;<\/p>\n
public class HelloWorldWebClient {<\/p>\n
public static void main(String args[]) {
\nWebClient client = WebClient.create(“https:\/\/localhost:8080”);<\/p>\n
Mono result = client.get()
\n.uri(“\/helloWorld”)
\n.accept(MediaType.TEXT_PLAIN)
\n.exchange();<\/p>\n
System.out.println(“Result = ” + result.flatMap(res -> res.bodyToMono(String.class)).block());
\n}<\/p>\n
}
\n“`<\/p>\n
\u5358\u7d14\u306aJava\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u3057\u3066\u5b9f\u884c\u3057\u3001\u30c7\u30d0\u30c3\u30b0\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u305f\u304f\u3055\u3093\u8868\u793a\u3055\u308c\u305f\u6b63\u3057\u3044\u51fa\u529b\u304c\u8868\u793a\u3055\u308c\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n
\u8981\u7d04\u3002<\/h2>\n
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<\/div>\n- \n
- \n
- Mono: Publisher\u3092\u5b9f\u88c5\u3057\u30010\u307e\u305f\u306f1\u3064\u306e\u8981\u7d20\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n<\/li>\n<\/ol>\n
- \n
- CURL\u30b3\u30de\u30f3\u30c9\u3092\u4f7f\u7528\u3059\u308b<\/ol>\n<\/li>\n<\/ol>\n
$ curl https:\/\/localhost:8080\/helloWorld
\nHello World!
\n$<\/p>\n\u30d6\u30e9\u30a6\u30b6\u3067URL\u3092\u8d77\u52d5\u3059\u308b<\/p>\n
Spring 5\u306eWebTestClient\u3092\u4f7f\u7528<\/p>\n
\u4ee5\u4e0b\u306f\u3001Spring 5\u306e\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u30a6\u30a7\u30d6\u3092\u4f7f\u7528\u3057\u3066\u5f53\u793e\u306eREST\u30a6\u30a7\u30d6\u30b5\u30fc\u30d3\u30b9\u3092\u30c6\u30b9\u30c8\u3059\u308b\u305f\u3081\u306eJUnit\u30c6\u30b9\u30c8\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u3002<\/p>\n
“`java
\npackage com.scdev.spring;<\/p>\nimport org.junit.Test;
\nimport org.junit.runner.RunWith;
\nimport org.springframework.beans.factory.annotation.Autowired;
\nimport org.springframework.boot.test.context.SpringBootTest;
\nimport org.springframework.http.MediaType;
\nimport org.springframework.test.context.junit4.SpringRunner;
\nimport org.springframework.test.web.reactive.server.WebTestClient;<\/p>\n@RunWith(SpringRunner.class)
\n@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
\npublic class SpringWebFluxTest {<\/p>\n@Autowired
\nprivate WebTestClient webTestClient;<\/p>\n@Test
\npublic void testHelloWorld() {
\nwebTestClient
\n.get().uri(“\/helloWorld”) \/\/ GET\u30e1\u30bd\u30c3\u30c9\u3068URI
\n.accept(MediaType.TEXT_PLAIN) \/\/ ACCEPT-Content\u3092\u8a2d\u5b9a
\n.exchange() \/\/ \u5fdc\u7b54\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b
\n.expectStatus().isOk() \/\/ \u5fdc\u7b54\u304cOK\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b
\n.expectBody(String.class).isEqualTo(“Hello World!”); \/\/ \u5fdc\u7b54\u306e\u30bf\u30a4\u30d7\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u78ba\u8a8d\u3059\u308b
\n}<\/p>\n}
\n“`<\/p>\n\u3053\u308c\u3092JUnit\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u3068\u3057\u3066\u5b9f\u884c\u3057\u3001\u6b63\u5e38\u306b\u30d1\u30b9\u3059\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n
Spring Web Reactive\u304b\u3089WebClient\u3092\u4f7f\u7528\u3059\u308b<\/p>\n
REST\u30a6\u30a7\u30d6\u30b5\u30fc\u30d3\u30b9\u3092\u547c\u3073\u51fa\u3059\u305f\u3081\u306bWebClient\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/p>\n
“`java
\npackage com.scdev.spring.client;<\/p>\nimport org.springframework.http.MediaType;
\nimport org.springframework.web.reactive.function.client.ClientResponse;
\nimport org.springframework.web.reactive.function.client.WebClient;<\/p>\nimport reactor.core.publisher.Mono;<\/p>\n
public class HelloWorldWebClient {<\/p>\n
public static void main(String args[]) {
\nWebClient client = WebClient.create(“https:\/\/localhost:8080”);<\/p>\nMono result = client.get()
\n.uri(“\/helloWorld”)
\n.accept(MediaType.TEXT_PLAIN)
\n.exchange();<\/p>\nSystem.out.println(“Result = ” + result.flatMap(res -> res.bodyToMono(String.class)).block());
\n}<\/p>\n}
\n“`<\/p>\n\u5358\u7d14\u306aJava\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3068\u3057\u3066\u5b9f\u884c\u3057\u3001\u30c7\u30d0\u30c3\u30b0\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u305f\u304f\u3055\u3093\u8868\u793a\u3055\u308c\u305f\u6b63\u3057\u3044\u51fa\u529b\u304c\u8868\u793a\u3055\u308c\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n
\u8981\u7d04\u3002<\/h2>\n
\u3053\u306e\u6295\u7a3f\u3067\u306f\u3001Spring WebFlux\u306b\u3064\u3044\u3066\u5b66\u3073\u3001\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u306aRestful Web\u30b5\u30fc\u30d3\u30b9\u3092\u4f5c\u6210\u3059\u308b\u65b9\u6cd5\u3092\u5b66\u3073\u307e\u3057\u305f\u3002Spring\u306a\u3069\u306e\u4eba\u6c17\u306e\u3042\u308b\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30e2\u30c7\u30eb\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u3053\u3068\u306f\u826f\u3044\u3053\u3068\u3067\u3059\u3002\u3057\u304b\u3057\u3001\u4f9d\u5b58\u95a2\u4fc2\u304c\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u3067\u975e\u30d6\u30ed\u30c3\u30ad\u30f3\u30b0\u3067\u306a\u3044\u5834\u5408\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3082\u771f\u306b\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4f8b\u3048\u3070\u3001\u95a2\u4fc2\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30d9\u30f3\u30c0\u30fc\u306f\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30c9\u30e9\u30a4\u30d0\u3092\u6301\u3063\u3066\u3044\u306a\u3044\u305f\u3081\u3001JDBC\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001Hibernate API\u3082\u975e\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u95a2\u4fc2\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u672c\u5f53\u306b\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3001\u307e\u3060\u3067\u3059\u3002\u79c1\u306f\u305d\u308c\u304c\u8fd1\u3044\u3046\u3061\u306b\u5909\u308f\u308b\u3053\u3068\u3092\u671f\u5f85\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u79c1\u306eGitHub\u30ea\u30dd\u30b8\u30c8\u30ea\u304b\u3089\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30b3\u30fc\u30c9\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u53c2\u7167\uff1a\u516c\u5f0f\u30c9\u30ad\u30e5\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3<\/p>\n","protected":false},"excerpt":{"rendered":"
Spring WebFlux\u306f\u3001Spring 5\u3067\u5c0e\u5165\u3055\u308c\u305f\u65b0\u3057\u3044\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u3059\u3002Spring WebFlux\u306f\u3001Spring\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u304a\u3051\u308b\u53cd\u5fdc\u578b\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30e2\u30c7\u30eb\u3078\u306e\u7b2c\u4e00\u6b69\u3067\u3059\u3002 Spring\u306e\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u30d7 […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-351","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\n
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<\/p>\n
- Flux: Publisher\u3092\u5b9f\u88c5\u3057\u3001N\u500b\u306e\u8981\u7d20\u3092\u8fd4\u3057\u307e\u3059\u3002<\/ol>\n
Spring WebFlux\u306eHello World\u306e\u4f8b\u3002<\/h2>\n
<\/div>\nSpring WebFlux\u306eMaven\u306e\u4f9d\u5b58\u95a2\u4fc2<\/h3>\n
<project xmlns=\"https:\/\/maven.apache.org\/POM\/4.0.0\" xmlns:xsi=\"https:\/\/www.w3.org\/2001\/XMLSchema-instance\" xsi:schemaLocation=\"https:\/\/maven.apache.org\/POM\/4.0.0 https:\/\/maven.apache.org\/xsd\/maven-4.0.0.xsd\">\r\n <modelVersion>4.0.0<\/modelVersion>\r\n <groupId>com.scdev.spring<\/groupId>\r\n <artifactId>SpringWebflux<\/artifactId>\r\n <version>0.0.1-SNAPSHOT<\/version>\r\n <name>Spring WebFlux<\/name>\r\n <description>Spring WebFlux Example<\/description>\r\n \r\n <properties>\r\n <project.build.sourceEncoding>UTF-8<\/project.build.sourceEncoding>\r\n <project.reporting.outputEncoding>UTF-8<\/project.reporting.outputEncoding>\r\n <jdk.version>1.9<\/jdk.version>\r\n <\/properties>\r\n \r\n <parent>\r\n\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t<artifactId>spring-boot-starter-parent<\/artifactId>\r\n\t\t<version>2.0.1.RELEASE<\/version>\r\n\t\t<relativePath\/> <!-- lookup parent from repository -->\r\n\t<\/parent>\r\n\r\n\t<dependencies>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t\t<artifactId>spring-boot-starter-webflux<\/artifactId>\r\n\t\t<\/dependency>\r\n\t\t<dependency>\r\n\t\t\t<groupId>org.springframework.boot<\/groupId>\r\n\t\t\t<artifactId>spring-boot-starter-test<\/artifactId>\r\n\t\t\t<scope>test<\/scope>\r\n\t\t<\/dependency>\r\n\r\n\t\t<dependency>\r\n\t\t\t<groupId>io.projectreactor<\/groupId>\r\n\t\t\t<artifactId>reactor-test<\/artifactId>\r\n\t\t\t<scope>test<\/scope>\r\n\t\t<\/dependency>\r\n <\/dependencies>\r\n\t<repositories>\r\n\t\t<repository>\r\n\t\t\t<id>spring-snapshots<\/id>\r\n\t\t\t<name>Spring Snapshots<\/name>\r\n\t\t\t<url>https:\/\/repo.spring.io\/snapshot<\/url>\r\n\t\t\t<snapshots>\r\n\t\t\t\t<enabled>true<\/enabled>\r\n\t\t\t<\/snapshots>\r\n\t\t<\/repository>\r\n\t\t<repository>\r\n\t\t\t<id>spring-milestones<\/id>\r\n\t\t\t<name>Spring Milestones<\/name>\r\n\t\t\t<url>https:\/\/repo.spring.io\/milestone<\/url>\r\n\t\t\t<snapshots>\r\n\t\t\t\t<enabled>false<\/enabled>\r\n\t\t\t<\/snapshots>\r\n\t\t<\/repository>\r\n\t<\/repositories>\r\n\t<pluginRepositories>\r\n\t\t<pluginRepository>\r\n\t\t\t<id>spring-snapshots<\/id>\r\n\t\t\t<name>Spring Snapshots<\/name>\r\n\t\t\t<url>https:\/\/repo.spring.io\/snapshot<\/url>\r\n\t\t\t<snapshots>\r\n\t\t\t\t<enabled>true<\/enabled>\r\n\t\t\t<\/snapshots>\r\n\t\t<\/pluginRepository>\r\n\t\t<pluginRepository>\r\n\t\t\t<id>spring-milestones<\/id>\r\n\t\t\t<name>Spring Milestones<\/name>\r\n\t\t\t<url>https:\/\/repo.spring.io\/milestone<\/url>\r\n\t\t\t<snapshots>\r\n\t\t\t\t<enabled>false<\/enabled>\r\n\t\t\t<\/snapshots>\r\n\t\t<\/pluginRepository>\r\n\t<\/pluginRepositories>\r\n <build>\r\n <plugins>\r\n <plugin>\r\n <groupId>org.springframework.boot<\/groupId>\r\n <artifactId>spring-boot-maven-plugin<\/artifactId>\r\n <\/plugin>\r\n <\/plugins>\r\n <pluginManagement>\r\n <plugins>\r\n <plugin>\r\n <groupId>org.apache.maven.plugins<\/groupId>\r\n <artifactId>maven-compiler-plugin<\/artifactId>\r\n <version>3.7.0<\/version>\r\n <configuration>\r\n <source>${jdk.version}<\/source>\r\n <target>${jdk.version}<\/target>\r\n <\/configuration>\r\n <\/plugin>\r\n <\/plugins>\r\n <\/pluginManagement>\r\n <\/build>\r\n \r\n<\/project>\r\n<\/code><\/pre>\n\u6700\u3082\u91cd\u8981\u306a\u4f9d\u5b58\u95a2\u4fc2\u306f\u3001spring-boot-starter-webflux\u3068spring-boot-starter-parent\u3067\u3059\u3002\u305d\u306e\u4ed6\u306e\u4f9d\u5b58\u95a2\u4fc2\u306f\u3001JUnit\u306e\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002<\/p>\n
\u30b9\u30d7\u30ea\u30f3\u30b0\u306eWebFlux\u30cf\u30f3\u30c9\u30e9<\/h3>\n
Spring WebFlux\u306e\u30cf\u30f3\u30c9\u30e9\u30fc\u30e1\u30bd\u30c3\u30c9\u304c\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3057\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u3068\u3057\u3066Mono\u307e\u305f\u306fFlux\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n
package com.scdev.spring.component;\r\n\r\nimport org.springframework.http.MediaType;\r\nimport org.springframework.stereotype.Component;\r\nimport org.springframework.web.reactive.function.BodyInserters;\r\nimport org.springframework.web.reactive.function.server.ServerRequest;\r\nimport org.springframework.web.reactive.function.server.ServerResponse;\r\n\r\nimport reactor.core.publisher.Mono;\r\n\r\n@Component\r\npublic class HelloWorldHandler {\r\n\r\n\tpublic Mono<ServerResponse> helloWorld(ServerRequest request) {\r\n\t\treturn ServerResponse.ok().contentType(MediaType.TEXT_PLAIN)\r\n\t\t\t.body(BodyInserters.fromObject(\"Hello World!\"));\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u30ea\u30a2\u30af\u30c6\u30a3\u30d6\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8Mono\u304cServerResponse\u306e\u30dc\u30c7\u30a3\u3092\u4fdd\u6301\u3059\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u307e\u305f\u3001\u623b\u308a\u5024\u306e\u30b3\u30f3\u30c6\u30f3\u30c4\u30bf\u30a4\u30d7\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u30b3\u30fc\u30c9\u3001\u304a\u3088\u3073\u30dc\u30c7\u30a3\u3092\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306e\u95a2\u6570\u30c1\u30a7\u30fc\u30f3\u306b\u3082\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
Spring WebFlux\u306e\u30eb\u30fc\u30bf\u30fc<\/h3>\n
\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30eb\u30fc\u30c8\u3092\u5b9a\u7fa9\u3059\u308b\u305f\u3081\u306b\u30eb\u30fc\u30bf\u30fc\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u306fRouterFunction\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3057\u3001ServerResponse\u306e\u672c\u4f53\u3082\u4fdd\u6301\u3057\u307e\u3059\u3002<\/p>\n
package com.scdev.spring.component;\r\n\r\nimport org.springframework.context.annotation.Bean;\r\nimport org.springframework.context.annotation.Configuration;\r\nimport org.springframework.http.MediaType;\r\nimport org.springframework.web.reactive.function.server.RequestPredicates;\r\nimport org.springframework.web.reactive.function.server.RouterFunction;\r\nimport org.springframework.web.reactive.function.server.RouterFunctions;\r\nimport org.springframework.web.reactive.function.server.ServerResponse;\r\n\r\n@Configuration\r\npublic class HelloWorldRouter {\r\n\r\n\t@Bean\r\n\tpublic RouterFunction<ServerResponse> routeHelloWorld(HelloWorldHandler helloWorldHandler) {\r\n\r\n\t\treturn RouterFunctions.route(RequestPredicates.GET(\"\/helloWorld\")\r\n .and(RequestPredicates.accept(MediaType.TEXT_PLAIN)), helloWorldHandler::helloWorld);\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u79c1\u305f\u3061\u306f\/helloWorld\u306b\u5bfe\u3057\u3066GET\u30e1\u30bd\u30c3\u30c9\u3092\u516c\u958b\u3057\u3066\u304a\u308a\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u547c\u3073\u51fa\u3057\u306f\u5e73\u6587\u306e\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u53d7\u3051\u5165\u308c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u30b9\u30d7\u30ea\u30f3\u30b0\u30d6\u30fc\u30c8\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/h3>\n
\u79c1\u305f\u3061\u306e\u30b7\u30f3\u30d7\u30eb\u306aWebFlux\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092Spring Boot\u3067\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
package com.scdev.spring;\r\n\r\nimport org.springframework.boot.SpringApplication;\r\nimport org.springframework.boot.autoconfigure.SpringBootApplication;\r\n\r\n@SpringBootApplication\r\npublic class Application {\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tSpringApplication.run(Application.class, args);\r\n\t}\r\n}\r\n<\/code><\/pre>\n\u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u3092\u898b\u308b\u3068\u3001Spring WebFlux\u306b\u95a2\u9023\u3059\u308b\u3082\u306e\u306f\u4f55\u3082\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001spring-boot-starter-webflux\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u8ffd\u52a0\u3057\u305f\u305f\u3081\u3001Spring Boot\u306f\u79c1\u305f\u3061\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092Spring WebFlux\u3068\u3057\u3066\u69cb\u6210\u3057\u307e\u3059\u3002<\/p>\n
Java 9\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u30b5\u30dd\u30fc\u30c8<\/h3>\n
\u79c1\u305f\u3061\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306fJava 8\u4e0a\u3067\u5b9f\u884c\u3059\u308b\u6e96\u5099\u304c\u3067\u304d\u3066\u3044\u307e\u3059\u304c\u3001Java 9\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001module-info.java\u30af\u30e9\u30b9\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
module com.scdev.spring {\r\n requires reactor.core;\r\n requires spring.web;\r\n requires spring.beans;\r\n requires spring.context;\r\n requires spring.webflux;\r\n requires spring.boot;\r\n requires spring.boot.autoconfigure;\r\n exports com.scdev.spring;\r\n}\r\n<\/code><\/pre>\nSpring WebFlux Spring Boot \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\u3002<\/h3>\n
<\/div>\n2018-05-07 15:01:47.893 INFO 25158 --- [ main] o.s.w.r.f.s.s.RouterFunctionMapping : Mapped ((GET && \/helloWorld) && Accept: [text\/plain]) -> com.scdev.spring.component.HelloWorldRouter$$Lambda$501\/704766954@6eeb5d56\r\n2018-05-07 15:01:48.495 INFO 25158 --- [ctor-http-nio-1] r.ipc.netty.tcp.BlockingNettyContext : Started HttpServer on \/0:0:0:0:0:0:0:0:8080\r\n2018-05-07 15:01:48.495 INFO 25158 --- [ main] o.s.b.web.embedded.netty.NettyWebServer : Netty started on port(s): 8080\r\n2018-05-07 15:01:48.501 INFO 25158 --- [ main] com.scdev.spring.Application : Started Application in 1.86 seconds (JVM running for 5.542)\r\n<\/code><\/pre>\n\u30ed\u30b0\u304b\u3089\u306f\u3001\u79c1\u305f\u3061\u306e\u30a2\u30d7\u30ea\u304c\u30dd\u30fc\u30c88080\u4e0a\u306eNetty\u30b5\u30fc\u30d0\u30fc\u3067\u5b9f\u884c\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u660e\u78ba\u3067\u3059\u3002\u3055\u3042\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u30c6\u30b9\u30c8\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u6625\u306eWebFlux\u30a2\u30d7\u30ea\u306e\u30c6\u30b9\u30c8<\/h3>\n
\u79c1\u305f\u3061\u306f\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u30a2\u30d7\u30ea\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 (Watashitachi wa samazama na h\u014dh\u014d de apuri o tesuto suru koto ga dekimasu.)<\/p>\n
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