WEBFLUX04 Springbootwebflux Integrated MongoDB version of Windows

1 Download and install MongoDB 1.1 MongoDB website

　　　　

1.2 Downloads

Solutions-Download Center

　　　　

1.3 Installation

Double click to enter the installation can

1.3.1 Common BUG01 during installation

　　　　　　

1.3.2 BUG01 Solutions

　　　　　　

1.4 Start MongoDB

Tip # 01: You need to create a data directory at the same level as the installation directory to hold it

Tip 02: Save the following command as a bat file and double-click it the next time you start

C:\tool\mongoDB\bin\mongod--dbpath C:\tool\data--smallfiles

1.5 MongoDB Normal Startup console information

　　　　

2 Springbootwebflux Integrated MongoDB 2.1 Create a project

Introducing dependencies: Webflux, MongoDB, Devtool, Lombok

<?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>cn.xiangxu</groupId> <artifactid>webflux_demo</artifactid > <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>webflux_dem O</name> <description>demo Project for Spring boot</description> <parent> <groupId>org.springframework.boot</groupId> &        Lt;artifactid>spring-boot-starter-parent</artifactid> <version>2.0.3.RELEASE</version> <relativePath/> <!--lookup parent from repository to </parent> <properties> <pro Ject.build.sourceencoding>utf-8</project.build.sourceencoding> <project.reporting.outputencoding >UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties&    Gt            <dependencies> <dependency> <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-webflux</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactid>spring-boot-devtools</ar            Tifactid><!--<scope>runtime</scope>--> <optional> true</optional> </dependency> <dependency> <groupid>org.projectlombok</gro Upid> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <!--https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-data-mongodb-reactive --        <dependency> <groupId>org.springframework.boot</groupId> <artifactid&gt            ;spring-boot-starter-data-mongodb-reactive</artifactid> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactid>spring-boot-starter-test</arti factid> <scope>test</scope> </dependency> <dependency> < Groupid>io.projectreactor</groupid> <artifactId>reactor-test</artifactId> <s cope>test</scope> </dependency> <dependency> <groupid>org.junit.jupite r</groupid> <artifactId>junit-jupiter-api</artifactId> </dependency> &LT;/DEP endencies> <build> <plugins> <plugin> &LT;GROUPID&GT;ORG.SPRINGFR Amework.boot</groupid> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <fork>true</fork> </configuration> </plugin> </plugins> &LT;/BUILD&GT;&L T;/project>

Pom.xml2.2 Startup Class

Add @EnableReactiveMongoRepositories annotations on the startup class to turn on MongoDB-related configuration

 PackageCn.xiangxu.webflux_demo;Importorg.springframework.boot.SpringApplication;Importorg.springframework.boot.autoconfigure.SpringBootApplication;Importorg.springframework.data.mongodb.repository.config.enablereactivemongorepositories;@ Springbootapplication@enablereactivemongorepositories Public classwebfluxdemoapplication { Public Static voidMain (string[] args) {Springapplication.run (webfluxdemoapplication.class, args); }}

View Code2.3 Entity Classes

　　　　@Document (collection = "user") for the purpose of defining table names in MongoDB, equivalent to @table annotations in JPA

Tip 01: Primary keys in MongoDB are generally string-type

 PackageCn.xiangxu.webflux_demo.domain;ImportLombok. Data;Importorg.springframework.data.annotation.Id;Importorg.springframework.data.mongodb.core.mapping.Document;/** * @authorWang Yangji * @create 2018-06-27 8:42 * @desc **/@Document (Collection= "User") @Data Public classUser {@IdPrivateString ID; PrivateString name; Private intAge ;}

User.java2.4 Persistence Layer

You just have to inherit the Reactivemongorepository interface, like JPA.

 Packagecn.xiangxu.webflux_demo.repository;ImportCn.xiangxu.webflux_demo.domain.User;Importorg.springframework.data.mongodb.repository.ReactiveMongoRepository;Importorg.springframework.stereotype.Repository;/** * @authorWang Yangji * @create 2018-06-27 8:44 * @desc **/@Repository Public InterfaceUserrepositoryextendsReactivemongorepository<user, string> {}

Userrepository.java2.5 Control Layer

Tip 01: There are two ways to return, one is to return all data at once, and the other is to return like a stream

 PackageCn.xiangxu.webflux_demo.web;ImportCn.xiangxu.webflux_demo.domain.User;Importcn.xiangxu.webflux_demo.repository.UserRepository;ImportOrg.springframework.http.MediaType;Importorg.springframework.web.bind.annotation.GetMapping;Importorg.springframework.web.bind.annotation.RequestMapping;ImportOrg.springframework.web.bind.annotation.RestController;ImportReactor.core.publisher.Flux;/** * @authorWang Yangji * @create 2018-06-27 8:45 * @desc **/@RestController @requestmapping (value= "/user") Public classUsercontroller {Private Finaluserrepository userrepository; /*** Using constructors to inject persistent layer objects *@paramuserrepository*/     PublicUsercontroller (userrepository userrepository) { This. Userrepository =userrepository; }    /*** return at once *@return     */@GetMapping (Value= "/")     PublicFlux<user>GetAll () {returnUserrepository.findall (); }    /*** Flow back *@return     */@GetMapping (Value= "/stream/all", produces =mediatype.text_event_stream_value) PublicFlux<user>Streamgetall () {returnUserrepository.findall (); }}

Usercontroller.java2.6 Configuration Files

Prerequisite: Install MongoDB and start

SPRING.DATA.MONGODB.URI=MONGODB://Localhost:27017/webflux

2.7 Start and test

Tip 01: Test with Postman

　　　　

WEBFLUX04 Springbootwebflux Integrated MongoDB version of Windows