spring cloud开发Greenwich版：服务消费者及服务调用（二） | chenying99'blog

上文采用spring boot建立了restful项目，本文建立新的项目，并处理与之通信
先设置上文应用程序的端口，resources文件夹application.properties
server.port=8090

微服务’ralab-client’

New mocroservice ‘ralab-client’ and add the Maven spring-boot-starter-web denpendency
Add server.port parameter to the application.properties file
Add RestTemplate instance to Communicate with mocroservice ‘ralab-nlp’ by url

新建maven项目（服务消费者ralab-client），引入spring-web依赖，pom.xml文件如下：

<?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>2.1.8.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.ralab</groupId>
    <artifactId>ralab-client</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>ralab-client</name>
    <description>Demo project for Spring Boot</description>

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

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

RalabClientApplication文件

package com.ralab.ralabclient;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;

@SpringBootApplication
public class RalabClientApplication {

    @Bean
    public RestTemplate getRestTemplate()
    {
        return new RestTemplate();
    }

    public static void main(String[] args) {
        SpringApplication.run(RalabClientApplication.class, args);
    }

}

新建NlpResource

package com.ralab.ralabclient.resources;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/nlp")
public class NlpResource {

    @Autowired
    private RestTemplate restTemplate;

    @GetMapping("/service")
    public String index()
    {
      String result = restTemplate.getForObject("http://localhost:8090/nlp/api", String.class);
      return result;
    }
}

设置端口
resources文件夹application.properties
server.port=8091

运行RalabClientApplication

测试http://localhost:8091/nlp/service