Crear un microservcios

Crear un microservcios

Crear un simple microservicios

Crear un proyecto Java EE con maven

<?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>com.packtpub.microservices</groupId>
    <artifactId>weather-service</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>02-Smart City Weather Service</name>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <failOnMissingWebXml>false</failOnMissingWebXml>
        <version.payara.micro>5.182</version.payara.micro>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.packtpub.microservices</groupId>
            <artifactId>common</artifactId>
            <version>1.0</version>
        </dependency>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-api</artifactId>
            <version>8.0</version>
            <scope>provided</scope>
        </dependency>
    </dependencies>

    <build>
        <finalName>weather-service</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.7.0</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>

        </plugins>
    </build>

</project>

Clase Resources

import com.packtpub.microservices.domain.weather.Temperature;
import com.packtpub.microservices.domain.weather.TemperatureScale;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

/**
 *
 * @author avbravo
 */
@Path("/temperature")
public class TemperatureResource {

    Temperature temperature = new Temperature();

    @GET
    public Response getAverageTemperature() {
//        return Response.ok("35 Degrees")
//                .build();
        temperature.setTemperature(35D);
        temperature.setTemperatureScale(TemperatureScale.CELSIUS);
        return Response.ok(temperature).build();
    }
}

Application

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.packtpub.microservices.weather;

import java.util.Set;
import javax.ws.rs.ApplicationPath;
import javax.ws.rs.core.Application;

/**
 *
 * @author avbravo
 */
@ApplicationPath("/weather")
public class WeatherMicroService extends Application{
      @Override
    public Set<Class<?>> getClasses() {
        Set<Class<?>> resources = new java.util.HashSet<>();
        resources.add(com.packtpub.microservices.weather.temperature.TemperatureResource.class);

             return resources;
    }
}

Convertirlo a war o UberJar

Ejecutarlo