springboot openfeign服务端与客户端调用演示demo

server demo 演示

创建server项目

application.properties配置

spring.application.name=springboot-sample-openfeign-server
server.port=8086

import jar [pom.xml]

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.5.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <groupId>com.gaoxinfu.springboot.sample.openfeign</groupId>
    <artifactId>springboot-sample-openfeign-server</artifactId>
    <version>1.0.0</version>
    <name>springboot-sample-openfeign-server</name>
    <description>springboot-sample-openfeign-server</description>
    <packaging>pom</packaging>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <repositories>
        <repository>
            <id>maven-public</id>
            <name>maven-public</name>
            <url>http://localhost:8081/repository/maven-public/</url>
            <releases>
                <enabled>true</enabled>
            </releases>
            <snapshots>
                <enabled>true</enabled>
                <updatePolicy>always</updatePolicy>
                <checksumPolicy>warn</checksumPolicy>
            </snapshots>
        </repository>
    </repositories>

    <!-- 发布选项: id必须与setting.xml文件中server的id相同 -->
    <distributionManagement>
        <repository>
            <id>releases</id>
            <name>Nexus Release Repository</name>
            <url>http://localhost:8081/repository/releases/</url>
        </repository>
        <snapshotRepository>
            <id>snapshots</id>
            <name>Nexus Snapshot Repository</name>
            <url>http://localhost:8081/repository/snapshots/</url>
        </snapshotRepository>
    </distributionManagement>

    <dependencies>
        <!-- This is a web application -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

    <build>
        <resources>
            <resource>
                <directory>${basedir}/src/main/webapp</directory>
                <targetPath>META-INF/resources</targetPath>
                <includes>
                    <include>**/**
                
            
            
                ${basedir}/src/main/resources
                
                    **/**</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>

创建服务端的restful controller

/**
 * @Description:[一句话描述该类的功能]
 * @Author:gaoxinfu
 * @Date:2022/7/6 21:47
 * @Version 1.0.0
 */
@RestController
@Controller
public class IndexController {


    @PostMapping("/index")
    public IndexResDto index(@RequestBody IndexReqDto indexReqDto) {
        System.out.println("indexReqDto = "+indexReqDto);
        return new IndexResDto(1,"gaoxinfu","man",18);
    }
}

验证

openfeign client demo

创建client项目

import jar【pom.xml】

<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0modelVersion>

    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>2.1.5.RELEASEversion>
        <relativePath/> 
    parent>

    <groupId>com.gaoxinfu.springboot.sample.openfeigngroupId>
    <artifactId>springboot-sample-openfeign-clientartifactId>
    <version>1.0.0version>
    <name>springboot-sample-openfeign-clientname>
    <description>springboot-sample-openfeign-clientdescription>
    <packaging>pompackaging>

    <properties>
        <java.version>1.8java.version>
    properties>

    <repositories>
        <repository>
            <id>maven-publicid>
            <name>maven-publicname>
            <url>http://localhost:8081/repository/maven-public/url>
            <releases>
                <enabled>trueenabled>
            releases>
            <snapshots>
                <enabled>trueenabled>
                <updatePolicy>alwaysupdatePolicy>
                <checksumPolicy>warnchecksumPolicy>
            snapshots>
        repository>
    repositories>

    
    <distributionManagement>
        <repository>
            <id>releasesid>
            <name>Nexus Release Repositoryname>
            <url>http://localhost:8081/repository/releases/url>
        repository>
        <snapshotRepository>
            <id>snapshotsid>
            <name>Nexus Snapshot Repositoryname>
            <url>http://localhost:8081/repository/snapshots/url>
        snapshotRepository>
    distributionManagement>

    <dependencies>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.cloudgroupId>
            <artifactId>spring-cloud-starter-openfeignartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>
    dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloudgroupId>
                <artifactId>spring-cloud-dependenciesartifactId>
                
                <version>Greenwich.SR6version>
                <type>pomtype>
                <scope>importscope>
            dependency>
        dependencies>
    dependencyManagement>

    <build>
        <resources>
            <resource>
                <directory>${basedir}/src/main/webappdirectory>
                <targetPath>META-INF/resourcestargetPath>
                <includes>
                    <include>**/**include>
                includes>
            resource>
            <resource>
                <directory>${basedir}/src/main/resourcesdirectory>
                <includes>
                    <include>**/**include>
                includes>
            resource>
        resources>
    build>
project>

注意 springboot与springcloud版本的一个对照 参考

https://blog.csdn.net/u014636209/article/details/125863935?csdn_share_tail=%7B%22type%22%3A%22blog%22%2C%22rType%22%3A%22article%22%2C%22rId%22%3A%22125863935%22%2C%22source%22%3A%22u014636209%22%7D&ctrtid=dXJ80

application.properties配置

spring.application.name=springboot-sample-openfeign-client
server.port=8085

调用服务端的client接口编码

/**
 * @Description:[一句话描述该类的功能]
 * @Author:gaoxinfu
 * @Date:2022/7/19 07:16
 * @Version 1.0.0
 */
@FeignClient(name = "demo",url = "http://localhost:8086")
public interface ServerFeignClient {

    @GetMapping("/index")
    IndexResDto index(@RequestBody IndexReqDto indexReqDto);
}

客户端restful controller编码

/**
 * @Description:[一句话描述该类的功能]
 * @Author:gaoxinfu
 * @Date:2022/7/6 21:47
 * @Version 1.0.0
 */
@RestController
@Controller
public class DemoController {

    @Resource
    private ServerFeignClient serverFeignClient;

    @GetMapping("/client/index")
    public IndexResDto index(@RequestParam int id) {
        return serverFeignClient.index(new IndexReqDto(id));
    }
}

客户端调用验证

源码

https://github.com/gaoxinfu/springboot-sample/tree/master/springboot-sample-openfeign

写在最后

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https://github.com/gaoxinfu/springboot-sample/tree/master/springboot-sample-openfeignd现在
https://github.com/gaoxinfu/springboot-sample/tree/master/springboot-sample-openfeign