got postgres working

pom.xml

@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>org.springframework.boot</groupId>
 		<artifactId>spring-boot-starter-parent</artifactId>
-		<version>2.3.3.RELEASE</version>
+		<version>2.3.4.RELEASE</version>
 		<relativePath/> <!-- lookup parent from repository -->
 	</parent>
 	<groupId>com.example</groupId>
@@ -19,11 +19,20 @@
 	</properties>
 
 	<dependencies>
+		<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>
 
+		<dependency>
+			<groupId>org.postgresql</groupId>
+			<artifactId>postgresql</artifactId>
+			<scope>runtime</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>

src/main/java/com/example/demo/DemoApplication.java

@@ -1,23 +1,28 @@
 package com.example.demo;
 
-import com.example.demo.Greeting;
-
 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;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.beans.factory.annotation.Autowired;
 
 @SpringBootApplication
 @RestController
 public class DemoApplication {
+	@Autowired
+	private PersonRepository personRepository;
 
 	public static void main(String[] args) {
 		SpringApplication.run(DemoApplication.class, args);
 	}
 
 	@GetMapping("/hello")
-	public Greeting hello() {
-		return new Greeting(1, "hi");
+	public String hello() {
+		Person n = new Person();
+	    n.setName("bob");
+	    n.setEmail("bob@bob.com");
+	    personRepository.save(n);
+	    return "Saved";
 	}
-
 }

src/main/java/com/example/demo/Person.java

@@ -0,0 +1,41 @@
+package com.example.demo;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity // This tells Hibernate to make a table out of this class
+public class Person {
+  @Id
+  @GeneratedValue(strategy=GenerationType.AUTO)
+  private Integer id;
+
+  private String name;
+
+  private String email;
+
+  public Integer getId() {
+    return id;
+  }
+
+  public void setId(Integer id) {
+    this.id = id;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public String getEmail() {
+    return email;
+  }
+
+  public void setEmail(String email) {
+    this.email = email;
+  }
+}

src/main/java/com/example/demo/PersonRepository.java

@@ -0,0 +1,12 @@
+package com.example.demo;
+
+import org.springframework.data.repository.CrudRepository;
+
+import com.example.demo.Person;
+
+// This will be AUTO IMPLEMENTED by Spring into a Bean called userRepository
+// CRUD refers Create, Read, Update, Delete
+
+public interface PersonRepository extends CrudRepository<Person, Integer> {
+
+}

src/main/resources/application.properties

@@ -1 +1,2 @@
-
+spring.jpa.hibernate.ddl-auto=update
+spring.datasource.url=jdbc:postgresql://localhost:5432/springdemo