mirror of https://github.com/knative/docs.git
Add helloworld-java Spring Boot sample app (#31)
This commit is contained in:
Thomas Risberg
Ryan Gregg
parent
fdfd94d9f0
commit
9e1d72a7bc
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/target/
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!.mvn/wrapper/maven-wrapper.jar
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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### NetBeans ###
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/nbproject/private/
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/build/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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Binary file not shown.
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distributionUrl=https://repo1.maven.org/maven2/org/apache/maven/apache-maven/3.5.3/apache-maven-3.5.3-bin.zip
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FROM maven:3.5-jdk-8-alpine as build
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ADD pom.xml ./pom.xml
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ADD src ./src
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RUN mvn package -DskipTests
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FROM openjdk:8-jre-alpine
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COPY --from=build /target/helloworld-*.jar /helloworld.jar
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VOLUME /tmp
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ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/helloworld.jar"]
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# Hello World - Spring Boot Java sample
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A simple web app written in Java using Spring Boot 2.0 that you can use for testing Knative.
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It reads in an env variable `TARGET` and prints "Hello World: ${TARGET}!". If
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TARGET is not specified, it will use "NOT SPECIFIED" as the TARGET.
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## Prerequisites
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* A Kubernetes Engine cluster with Knative installed. Follow the
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[installation instructions](https://github.com/knative/docs/tree/master/install) if you need to create one.
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* The [Google Cloud SDK](https://cloud.google.com/sdk/docs/) is installed and initalized.
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* You have `kubectl` configured to connect to the Kubernetes cluster running Knative. If you created your cluster using the Google Cloud SDK, this has already be done. If you created your cluster from the Google Cloud Console, run the following command, replacing `CLUSTER_NAME` with the name of your cluster:
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```bash
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gcloud containers clusters get-credentials CLUSTER_NAME
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```
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* You have installed [Java SE 8 or later JDK](http://www.oracle.com/technetwork/java/javase/downloads/index.html).
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## Recreating the sample code
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While you can clone all of the code from this directory, hello world apps are
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generally more useful if you build them step-by-step. The following instructions
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recreate the source files from this folder.
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1. From the console, create a new empty web project using the curl and unzip commands:
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```shell
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curl https://start.spring.io/starter.zip \
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-d dependencies=web \
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-d name=helloworld \
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-d artifactId=helloworld \
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-o helloworld.zip
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unzip helloworld.zip
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```
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If you don't have curl installed, you can accomplish the same by visiting the
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[Spring Initializr](https://start.spring.io/) page. Specify Artifact as `helloworld`
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and add the `Web` dependency. Then click `Generate Project`, download and unzip the
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sample archive.
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1. Update the `@SpringBootApplication` class in
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`src/main/java/com/example/helloworld/HelloworldApplication.java` by adding
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a `@RestController` to handle the "/" mapping and also add a `@Value` field to
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provide the TARGET environment variable:
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```java
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package com.example.helloworld;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.web.bind.annotation.GetMapping;
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import org.springframework.web.bind.annotation.RestController;
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@SpringBootApplication
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public class HelloworldApplication {
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@Value("${TARGET:NOT SPECIFIED}")
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String target;
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@RestController
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class HelloworldController {
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@GetMapping("/")
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String hello() {
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return "Hello World: " + target;
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}
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}
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public static void main(String[] args) {
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SpringApplication.run(HelloworldApplication.class, args);
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}
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}
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```
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1. In your project directory, create a file named `Dockerfile` and copy the code
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block below into it. For detailed instructions on dockerizing a Spring Boot app,
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see [Spring Boot with Docker](https://spring.io/guides/gs/spring-boot-docker/).
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For additional information on multi-stage docker builds for Java see
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[Creating Smaller Java Image using Docker Multi-stage Build](http://blog.arungupta.me/smaller-java-image-docker-multi-stage-build/).
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```docker
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FROM maven:3.5-jdk-8-alpine as build
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ADD pom.xml ./pom.xml
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ADD src ./src
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RUN mvn package -DskipTests
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FROM openjdk:8-jre-alpine
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COPY --from=build /target/helloworld-*.jar /helloworld.jar
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VOLUME /tmp
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ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/helloworld.jar"]
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```
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1. Create a new file, `service.yaml` and copy the following service definition
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into the file. Make sure to replace `{PROJECT_ID}` with the ID of your Google
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Cloud project. If you are using docker or another container registry instead,
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replace the entire image path.
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```yaml
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apiVersion: serving.knative.dev/v1alpha1
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kind: Service
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metadata:
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name: helloworld-java
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namespace: default
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spec:
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runLatest:
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configuration:
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revisionTemplate:
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spec:
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container:
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image: gcr.io/{PROJECT_ID}/helloworld-java
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env:
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- name: TARGET
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value: "Spring Boot Sample v1"
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```
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## Building and deploying the sample
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Once you have recreated the sample code files (or used the files in the sample
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folder) you're ready to build and deploy the sample app.
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1. For this example, we'll use Google Cloud Container Builder to build the
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sample into a container. To use container builder, execute the following gcloud
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command:
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```shell
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gcloud container builds submit --tag gcr.io/${PROJECT_ID}/helloworld-java
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```
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1. After the build has completed, you can deploy the app into your cluster. Ensure
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that the container image value in `service.yaml` matches the container you built in
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the previous step. Apply the configuration using `kubectl`:
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```shell
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kubectl apply -f service.yaml
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```
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1. Now that your service is created, Knative will perform the following steps:
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* Create a new immutable revision for this version of the app.
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* Network programming to create a route, ingress, service, and load balance for your app.
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* Automatically scale your pods up and down (including to zero active pods).
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1. To find the URL and IP address for your service, use `kubectl get ing` to
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list the ingress points in the cluster. It may take a few seconds for the
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ingress point to be created.
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```shell
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kubectl get ing
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NAME HOSTS ADDRESS PORTS AGE
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helloworld-java-ingress helloworld-java.default.demo-domain.com 35.232.134.1 80 1m
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```
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1. Now you can make a request to your app to see the result. Replace
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`{IP_ADDRESS}` with the address you see returned in the previous step.
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```shell
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curl -H "Host: helloworld-java.default.demo-domain.com" http://{IP_ADDRESS}
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Hello World: Spring Boot Sample v1
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```
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## Removing the sample app deployment
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To remove the sample app from your cluster, delete the service record:
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```shell
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kubectl delete -f service.yaml
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```
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Binary file not shown.
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#!/bin/sh
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# ----------------------------------------------------------------------------
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# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
|
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
|
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# software distributed under the License is distributed on an
|
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
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# KIND, either express or implied. See the License for the
|
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# specific language governing permissions and limitations
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# under the License.
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# ----------------------------------------------------------------------------
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# ----------------------------------------------------------------------------
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# Maven2 Start Up Batch script
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#
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# Required ENV vars:
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# ------------------
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# JAVA_HOME - location of a JDK home dir
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#
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# Optional ENV vars
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# -----------------
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# M2_HOME - location of maven2's installed home dir
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# MAVEN_OPTS - parameters passed to the Java VM when running Maven
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# e.g. to debug Maven itself, use
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# set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
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# MAVEN_SKIP_RC - flag to disable loading of mavenrc files
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# ----------------------------------------------------------------------------
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if [ -z "$MAVEN_SKIP_RC" ] ; then
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if [ -f /etc/mavenrc ] ; then
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. /etc/mavenrc
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fi
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if [ -f "$HOME/.mavenrc" ] ; then
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. "$HOME/.mavenrc"
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fi
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fi
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# OS specific support. $var _must_ be set to either true or false.
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cygwin=false;
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darwin=false;
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mingw=false
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case "`uname`" in
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CYGWIN*) cygwin=true ;;
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MINGW*) mingw=true;;
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Darwin*) darwin=true
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# Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
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# See https://developer.apple.com/library/mac/qa/qa1170/_index.html
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if [ -z "$JAVA_HOME" ]; then
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if [ -x "/usr/libexec/java_home" ]; then
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export JAVA_HOME="`/usr/libexec/java_home`"
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else
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export JAVA_HOME="/Library/Java/Home"
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fi
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fi
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;;
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esac
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if [ -z "$JAVA_HOME" ] ; then
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if [ -r /etc/gentoo-release ] ; then
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JAVA_HOME=`java-config --jre-home`
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fi
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fi
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if [ -z "$M2_HOME" ] ; then
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## resolve links - $0 may be a link to maven's home
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PRG="$0"
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# need this for relative symlinks
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while [ -h "$PRG" ] ; do
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ls=`ls -ld "$PRG"`
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link=`expr "$ls" : '.*-> \(.*\)$'`
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if expr "$link" : '/.*' > /dev/null; then
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PRG="$link"
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else
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PRG="`dirname "$PRG"`/$link"
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fi
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done
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saveddir=`pwd`
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M2_HOME=`dirname "$PRG"`/..
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# make it fully qualified
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M2_HOME=`cd "$M2_HOME" && pwd`
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cd "$saveddir"
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# echo Using m2 at $M2_HOME
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fi
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# For Cygwin, ensure paths are in UNIX format before anything is touched
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if $cygwin ; then
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[ -n "$M2_HOME" ] &&
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M2_HOME=`cygpath --unix "$M2_HOME"`
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[ -n "$JAVA_HOME" ] &&
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JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
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[ -n "$CLASSPATH" ] &&
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CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
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fi
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|
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# For Migwn, ensure paths are in UNIX format before anything is touched
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if $mingw ; then
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[ -n "$M2_HOME" ] &&
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M2_HOME="`(cd "$M2_HOME"; pwd)`"
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[ -n "$JAVA_HOME" ] &&
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JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
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# TODO classpath?
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fi
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||||
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if [ -z "$JAVA_HOME" ]; then
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javaExecutable="`which javac`"
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if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
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# readlink(1) is not available as standard on Solaris 10.
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readLink=`which readlink`
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if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
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if $darwin ; then
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javaHome="`dirname \"$javaExecutable\"`"
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||||
javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
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||||
else
|
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javaExecutable="`readlink -f \"$javaExecutable\"`"
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fi
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javaHome="`dirname \"$javaExecutable\"`"
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javaHome=`expr "$javaHome" : '\(.*\)/bin'`
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JAVA_HOME="$javaHome"
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export JAVA_HOME
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fi
|
||||
fi
|
||||
fi
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|
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if [ -z "$JAVACMD" ] ; then
|
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if [ -n "$JAVA_HOME" ] ; then
|
||||
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
|
||||
# IBM's JDK on AIX uses strange locations for the executables
|
||||
JAVACMD="$JAVA_HOME/jre/sh/java"
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||||
else
|
||||
JAVACMD="$JAVA_HOME/bin/java"
|
||||
fi
|
||||
else
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JAVACMD="`which java`"
|
||||
fi
|
||||
fi
|
||||
|
||||
if [ ! -x "$JAVACMD" ] ; then
|
||||
echo "Error: JAVA_HOME is not defined correctly." >&2
|
||||
echo " We cannot execute $JAVACMD" >&2
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||||
exit 1
|
||||
fi
|
||||
|
||||
if [ -z "$JAVA_HOME" ] ; then
|
||||
echo "Warning: JAVA_HOME environment variable is not set."
|
||||
fi
|
||||
|
||||
CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
|
||||
|
||||
# traverses directory structure from process work directory to filesystem root
|
||||
# first directory with .mvn subdirectory is considered project base directory
|
||||
find_maven_basedir() {
|
||||
|
||||
if [ -z "$1" ]
|
||||
then
|
||||
echo "Path not specified to find_maven_basedir"
|
||||
return 1
|
||||
fi
|
||||
|
||||
basedir="$1"
|
||||
wdir="$1"
|
||||
while [ "$wdir" != '/' ] ; do
|
||||
if [ -d "$wdir"/.mvn ] ; then
|
||||
basedir=$wdir
|
||||
break
|
||||
fi
|
||||
# workaround for JBEAP-8937 (on Solaris 10/Sparc)
|
||||
if [ -d "${wdir}" ]; then
|
||||
wdir=`cd "$wdir/.."; pwd`
|
||||
fi
|
||||
# end of workaround
|
||||
done
|
||||
echo "${basedir}"
|
||||
}
|
||||
|
||||
# concatenates all lines of a file
|
||||
concat_lines() {
|
||||
if [ -f "$1" ]; then
|
||||
echo "$(tr -s '\n' ' ' < "$1")"
|
||||
fi
|
||||
}
|
||||
|
||||
BASE_DIR=`find_maven_basedir "$(pwd)"`
|
||||
if [ -z "$BASE_DIR" ]; then
|
||||
exit 1;
|
||||
fi
|
||||
|
||||
export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
|
||||
echo $MAVEN_PROJECTBASEDIR
|
||||
MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
|
||||
|
||||
# For Cygwin, switch paths to Windows format before running java
|
||||
if $cygwin; then
|
||||
[ -n "$M2_HOME" ] &&
|
||||
M2_HOME=`cygpath --path --windows "$M2_HOME"`
|
||||
[ -n "$JAVA_HOME" ] &&
|
||||
JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
|
||||
[ -n "$CLASSPATH" ] &&
|
||||
CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
|
||||
[ -n "$MAVEN_PROJECTBASEDIR" ] &&
|
||||
MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
|
||||
fi
|
||||
|
||||
WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
|
||||
|
||||
exec "$JAVACMD" \
|
||||
$MAVEN_OPTS \
|
||||
-classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
|
||||
"-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
|
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${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"
|
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|
|
@ -0,0 +1,143 @@
|
|||
@REM ----------------------------------------------------------------------------
|
||||
@REM Licensed to the Apache Software Foundation (ASF) under one
|
||||
@REM or more contributor license agreements. See the NOTICE file
|
||||
@REM distributed with this work for additional information
|
||||
@REM regarding copyright ownership. The ASF licenses this file
|
||||
@REM to you under the Apache License, Version 2.0 (the
|
||||
@REM "License"); you may not use this file except in compliance
|
||||
@REM with the License. You may obtain a copy of the License at
|
||||
@REM
|
||||
@REM http://www.apache.org/licenses/LICENSE-2.0
|
||||
@REM
|
||||
@REM Unless required by applicable law or agreed to in writing,
|
||||
@REM software distributed under the License is distributed on an
|
||||
@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
||||
@REM KIND, either express or implied. See the License for the
|
||||
@REM specific language governing permissions and limitations
|
||||
@REM under the License.
|
||||
@REM ----------------------------------------------------------------------------
|
||||
|
||||
@REM ----------------------------------------------------------------------------
|
||||
@REM Maven2 Start Up Batch script
|
||||
@REM
|
||||
@REM Required ENV vars:
|
||||
@REM JAVA_HOME - location of a JDK home dir
|
||||
@REM
|
||||
@REM Optional ENV vars
|
||||
@REM M2_HOME - location of maven2's installed home dir
|
||||
@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
|
||||
@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending
|
||||
@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
|
||||
@REM e.g. to debug Maven itself, use
|
||||
@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
|
||||
@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
|
||||
@REM ----------------------------------------------------------------------------
|
||||
|
||||
@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
|
||||
@echo off
|
||||
@REM enable echoing my setting MAVEN_BATCH_ECHO to 'on'
|
||||
@if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO%
|
||||
|
||||
@REM set %HOME% to equivalent of $HOME
|
||||
if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
|
||||
|
||||
@REM Execute a user defined script before this one
|
||||
if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
|
||||
@REM check for pre script, once with legacy .bat ending and once with .cmd ending
|
||||
if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
|
||||
if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
|
||||
:skipRcPre
|
||||
|
||||
@setlocal
|
||||
|
||||
set ERROR_CODE=0
|
||||
|
||||
@REM To isolate internal variables from possible post scripts, we use another setlocal
|
||||
@setlocal
|
||||
|
||||
@REM ==== START VALIDATION ====
|
||||
if not "%JAVA_HOME%" == "" goto OkJHome
|
||||
|
||||
echo.
|
||||
echo Error: JAVA_HOME not found in your environment. >&2
|
||||
echo Please set the JAVA_HOME variable in your environment to match the >&2
|
||||
echo location of your Java installation. >&2
|
||||
echo.
|
||||
goto error
|
||||
|
||||
:OkJHome
|
||||
if exist "%JAVA_HOME%\bin\java.exe" goto init
|
||||
|
||||
echo.
|
||||
echo Error: JAVA_HOME is set to an invalid directory. >&2
|
||||
echo JAVA_HOME = "%JAVA_HOME%" >&2
|
||||
echo Please set the JAVA_HOME variable in your environment to match the >&2
|
||||
echo location of your Java installation. >&2
|
||||
echo.
|
||||
goto error
|
||||
|
||||
@REM ==== END VALIDATION ====
|
||||
|
||||
:init
|
||||
|
||||
@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
|
||||
@REM Fallback to current working directory if not found.
|
||||
|
||||
set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
|
||||
IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
|
||||
|
||||
set EXEC_DIR=%CD%
|
||||
set WDIR=%EXEC_DIR%
|
||||
:findBaseDir
|
||||
IF EXIST "%WDIR%"\.mvn goto baseDirFound
|
||||
cd ..
|
||||
IF "%WDIR%"=="%CD%" goto baseDirNotFound
|
||||
set WDIR=%CD%
|
||||
goto findBaseDir
|
||||
|
||||
:baseDirFound
|
||||
set MAVEN_PROJECTBASEDIR=%WDIR%
|
||||
cd "%EXEC_DIR%"
|
||||
goto endDetectBaseDir
|
||||
|
||||
:baseDirNotFound
|
||||
set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
|
||||
cd "%EXEC_DIR%"
|
||||
|
||||
:endDetectBaseDir
|
||||
|
||||
IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
|
||||
|
||||
@setlocal EnableExtensions EnableDelayedExpansion
|
||||
for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
|
||||
@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
|
||||
|
||||
:endReadAdditionalConfig
|
||||
|
||||
SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
|
||||
|
||||
set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
|
||||
set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
|
||||
|
||||
%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
|
||||
if ERRORLEVEL 1 goto error
|
||||
goto end
|
||||
|
||||
:error
|
||||
set ERROR_CODE=1
|
||||
|
||||
:end
|
||||
@endlocal & set ERROR_CODE=%ERROR_CODE%
|
||||
|
||||
if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
|
||||
@REM check for post script, once with legacy .bat ending and once with .cmd ending
|
||||
if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
|
||||
if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
|
||||
:skipRcPost
|
||||
|
||||
@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
|
||||
if "%MAVEN_BATCH_PAUSE%" == "on" pause
|
||||
|
||||
if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
|
||||
|
||||
exit /B %ERROR_CODE%
|
||||
|
|
@ -0,0 +1,50 @@
|
|||
<?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.example</groupId>
|
||||
<artifactId>helloworld</artifactId>
|
||||
<version>0.0.1-SNAPSHOT</version>
|
||||
<packaging>jar</packaging>
|
||||
|
||||
<name>helloworld</name>
|
||||
<description>Demo project for Spring Boot</description>
|
||||
|
||||
<parent>
|
||||
<groupId>org.springframework.boot</groupId>
|
||||
<artifactId>spring-boot-starter-parent</artifactId>
|
||||
<version>2.0.3.RELEASE</version>
|
||||
<relativePath/> <!-- lookup parent from repository -->
|
||||
</parent>
|
||||
|
||||
<properties>
|
||||
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
|
||||
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
|
||||
<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>
|
||||
|
|
@ -0,0 +1,15 @@
|
|||
apiVersion: serving.knative.dev/v1alpha1
|
||||
kind: Service
|
||||
metadata:
|
||||
name: helloworld-java
|
||||
namespace: default
|
||||
spec:
|
||||
runLatest:
|
||||
configuration:
|
||||
revisionTemplate:
|
||||
spec:
|
||||
container:
|
||||
image: gcr.io/{PROJECT_ID}/helloworld-java
|
||||
env:
|
||||
- name: TARGET
|
||||
value: "Spring Boot Sample v1"
|
||||
|
|
@ -0,0 +1,26 @@
|
|||
package com.example.helloworld;
|
||||
|
||||
import org.springframework.beans.factory.annotation.Value;
|
||||
import org.springframework.boot.SpringApplication;
|
||||
import org.springframework.boot.autoconfigure.SpringBootApplication;
|
||||
import org.springframework.web.bind.annotation.GetMapping;
|
||||
import org.springframework.web.bind.annotation.RestController;
|
||||
|
||||
@SpringBootApplication
|
||||
public class HelloworldApplication {
|
||||
|
||||
@Value("${TARGET:NOT SPECIFIED}")
|
||||
String message;
|
||||
|
||||
@RestController
|
||||
class HelloworldController {
|
||||
@GetMapping("/")
|
||||
String hello() {
|
||||
return "Hello World: " + message;
|
||||
}
|
||||
}
|
||||
|
||||
public static void main(String[] args) {
|
||||
SpringApplication.run(HelloworldApplication.class, args);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,16 @@
|
|||
package com.example.helloworld;
|
||||
|
||||
import org.junit.Test;
|
||||
import org.junit.runner.RunWith;
|
||||
import org.springframework.boot.test.context.SpringBootTest;
|
||||
import org.springframework.test.context.junit4.SpringRunner;
|
||||
|
||||
@RunWith(SpringRunner.class)
|
||||
@SpringBootTest
|
||||
public class HelloworldApplicationTests {
|
||||
|
||||
@Test
|
||||
public void contextLoads() {
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue