Spring Boot JDBC Connection to Google Cloud SQL not working - spring-boot

Question

I want to start by saying that when I run this locally, it works perfectly. When I deploy (./mvnw -DskipTests=true appengine:deploy) I deploys just fine with no errors and even appears to run on google cloud just fine. But when I try to use the registration form, i get the following error on submission.
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Mar 07 22:48:57 UTC 2018
There was an unexpected error (type=Internal Server Error, status=500).
Unable to acquire JDBC Connection; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection
MY POM FILE
<?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.myApp</groupId>
<artifactId>myApp-server</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>trading-server</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.0.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>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<mysql-connector.version>6.0.5</mysql-connector.version>
<mysql-socket-factory.version>1.0.5</mysql-socket-factory.version>
</properties>
<dependencies>
<!-- Spring Boot Dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- Thymeleaf -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity4</artifactId>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-java8time</artifactId>
</dependency>
<!-- Spring Security -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<!-- Database Dependencies -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<!-- MySQL Socket Factory for Cloud SQL -->
<groupId>com.google.cloud.sql</groupId>
<artifactId>mysql-socket-factory</artifactId>
<version>1.0.3</version>
</dependency>
<!-- Test Dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Caching Dependencies -->
<!-- <dependency> <groupId>javax.cache</groupId> <artifactId>cache-api</artifactId>
</dependency> <dependency> <groupId>org.ehcache</groupId> <artifactId>ehcache</artifactId>
</dependency> -->
<!-- Webjars Dependencies -->
<dependency>
<groupId>org.webjars</groupId>
<artifactId>webjars-locator</artifactId>
<version>0.32</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>3.3.7-1</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.3.1-1</version>
</dependency>
</dependencies>
<build>
<!-- START plugin -->
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>com.google.cloud.tools</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>${appengine.maven.plugin}</version>
</plugin>
</plugins>
<!-- END plugin -->
</build>
APPLICATION PROPERTIES
## DATABASE
database=mysql
#spring.datasource.schema=classpath*:db/${database}/schema.sql
spring.datasource.data=classpath*:db/${database}/data.sql
# Web
spring.thymeleaf.mode=HTML
# Hibernate
hibernate.dialect.storage_engine = innodb
# JPA
spring.jpa.hibernate.ddl-auto=none
spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
# Spring Actuator Settings
management.endpoints.web.exposure.include=health,info,beans,env,metrics,mapping,trace,sessions
management.endpoints.web.base-path=/actuator
# Active Spring profiles
spring.profiles.active=mysql
APPLICATION-MYSQL.PROPERTIES
database=mysql
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://google/database?cloudSqlInstance=spring-test:us-central1:spring-main=com.google.cloud.sql.mysql.SocketFactory
#spring.datasource.url=jdbc:mysql://###.#.#.#/database?cloudSqlInstance=spring-test:us-central1:spring-main=com.google.cloud.sql.mysql.SocketFactory
spring.datasource.username=root
spring.datasource.password=secret
spring.datasource.initialize=true
So again this works perfectly when I comment when i switch datasource.url above and run it locally. But I get the following error when I try to register an account on google cloud sql:
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Mar 07 22:48:57 UTC 2018
There was an unexpected error (type=Internal Server Error, status=500).
Unable to acquire JDBC Connection; nested exception is org.hibernate.exception.JDBCConnectionException: Unable to acquire JDBC Connection

Answer 1

The easy way to connect is using spring cloud gcp.
I did this repo to provide a successful connection example.