谷歌云SpringBootSpringCloud

GCP services overview

• Cloud Function: provide a completely serverless execution environment or functions as a service
• App engine: that provides a fully managed platform as a service framework.
• Kubernetes engine: that provides a managed containers as a service environment for containerized applications.
• Compute Engine: which is Google’s infrastructure as a service solution that provides maximum flexibility for users and organizations who choose to manage their solutions themselves.
  
  Migrate from using a Cloud SQL instance to a Cloud Spanner instance to meet the needs for high levels of transactional performance.
  

Spring Framework Intro

Spring framework: an open source application framework and inversion of control container developed by Pivotal for the Java platform.
Spring boot: a spring framework solution designed to simplify the bootstrapping and development of stand-alone production spring based applications.

Lab 1: Bootstrapping the application frontend and backend

Cloudshell is an interactive Linux command line shell environment for managing resources hosted on GCP. When you start Cloudshell, it provisions a small compute engine virtual machine, running a Debian-based Linux operating system. Cloud Shell provides command line access to the virtual machine instance in a terminal window that opens in the GCP console.
Lab Link

Objectives
In this lab, you learn how to perform the following tasks:

• Configure Cloud Shell to run a multi-part Java application locally
• Use Apache Maven to launch Java applications in Cloud Shell
• Use curl and the Cloud Shell web preview to test connectivity to web applications running locally in Cloud Shell

Task 1. Bootstrap the application

1. Run the backend locally
   Run the backend application (guestbook-service).

cd ~/guestbook-service
./mvnw -q spring-boot:run -Dserver.port&＃61;8081


Test the service


curl http://localhost:8081/guestbookMessages


Post a new message.


curl -XPOST -H "content-type: application/json" \-d &＃39;{"name": "Ray", "message": "Hello"}&＃39; \http://localhost:8081/guestbookMessages


List all the messages.


curl http://localhost:8081/guestbookMessages


2. Run the frontend locally
   Make a copy of the initial version of the frontend application (guestbook-frontend).

cp -a ~/spring-cloud-gcp-guestbook/1-bootstrap/guestbook-frontend \~/guestbook-frontend


Run the frontend application.

cd ~/guestbook-frontend
./mvnw -q spring-boot:run


Task 2. Test the guestbook application

1. Web preview on port 8080

2. Use Cloud Shell to test the backend service
   List all the calls to backend guestbook-service API

curl -s http://localhost:8081/guestbookMessages


3. Use jp to parse the JSON return text in given format.

curl -s http://localhost:8081/guestbookMessages \| jq -r &＃39;._embedded.guestbookMessages[] | {name: .name, message: .message}&＃39;

Spring Boot注解

SpringBoot之常用注解