Initial commit

.gitignore

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+/target/
+.settings
+.project
+.classpath

README.md

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+
+
+Import in Eclipse as existing maven project

pom.xml

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+<?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>1</groupId>
+	<artifactId>quickstart</artifactId>
+	<version>0.0.1-SNAPSHOT</version>
+
+	<name>quickstart</name>
+	<!-- FIXME change it to the project's website -->
+	<url>http://www.example.com</url>
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.5.4</version>
+	</parent>
+	<properties>
+		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+		<maven.compiler.source>1.8</maven.compiler.source>
+		<maven.compiler.target>1.8</maven.compiler.target>
+	</properties>
+
+	<dependencies>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+
+	</dependencies>
+
+	<build>
+		<pluginManagement>
+			<!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
+			<plugins>
+				<!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
+				<plugin>
+					<artifactId>maven-clean-plugin</artifactId>
+					<version>3.1.0</version>
+				</plugin>
+				<!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
+				<plugin>
+					<artifactId>maven-resources-plugin</artifactId>
+					<version>3.0.2</version>
+				</plugin>
+				<plugin>
+					<artifactId>maven-compiler-plugin</artifactId>
+					<version>3.8.0</version>
+				</plugin>
+				<plugin>
+					<artifactId>maven-surefire-plugin</artifactId>
+					<version>2.22.1</version>
+				</plugin>
+				<plugin>
+					<artifactId>maven-jar-plugin</artifactId>
+					<version>3.0.2</version>
+				</plugin>
+				<plugin>
+					<artifactId>maven-install-plugin</artifactId>
+					<version>2.5.2</version>
+				</plugin>
+				<plugin>
+					<artifactId>maven-deploy-plugin</artifactId>
+					<version>2.8.2</version>
+				</plugin>
+				<!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
+				<plugin>
+					<artifactId>maven-site-plugin</artifactId>
+					<version>3.7.1</version>
+				</plugin>
+				<plugin>
+					<artifactId>maven-project-info-reports-plugin</artifactId>
+					<version>3.0.0</version>
+				</plugin>
+			</plugins>
+		</pluginManagement>
+	</build>
+</project>

src/main/java/quickstart/Application.java

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+package quickstart;
+
+import java.util.stream.Stream;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+    @Bean
+    CommandLineRunner init(UserRepository userRepository) {
+        return args -> {
+            Stream.of("John", "Julie", "Jennifer", "Helen", "Rachel").forEach(name -> {
+                User user = new User(name, name.toLowerCase() + "@domain.com");
+                userRepository.save(user);
+            });
+            userRepository.findAll().forEach(System.out::println);
+        };
+    }
+}

src/main/java/quickstart/User.java

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+package quickstart;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class User {
+
+	@Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private long id;
+    private final String name;
+    private final String email;
+
+	public User() {
+		super();
+		this.name = "";
+		this.email = "";
+	}
+
+	public User(String name, String email) {
+		super();
+		this.name = name;
+		this.email = email;
+	}
+
+    public User(long id, String name, String email) {
+		super();
+		this.id = id;
+		this.name = name;
+		this.email = email;
+	}
+
+	public long getId() {
+		return id;
+	}
+	public void setId(long id) {
+		this.id = id;
+	}
+	public String getName() {
+		return name;
+	}
+	public String getEmail() {
+		return email;
+	}
+
+	@Override
+	public String toString() {
+		return "User [id=" + id + ", name=" + name + ", email=" + email + "]";
+	}
+
+    // standard constructors / setters / getters / toString
+}

src/main/java/quickstart/UserController.java

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+package quickstart;
+
+import java.util.List;
+
+import org.springframework.web.bind.annotation.CrossOrigin;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+//If you wanna allow for everyone then simply use @CrossOrigin
+@CrossOrigin
+//@CrossOrigin(origins = "http://localhost:4200")
+//@CrossOrigin(origins = {"http://localhost:7777", "http://someserver:8080"})
+public class UserController {
+
+    // standard constructors
+
+    private final UserRepository userRepository;
+
+    public UserController(UserRepository userRepository) {
+		super();
+		this.userRepository = userRepository;
+	}
+
+    @CrossOrigin
+	@GetMapping("/users")
+    public List<User> getUsers() {
+        return (List<User>) userRepository.findAll();
+    }
+
+    @CrossOrigin
+    @PostMapping("/users")
+    void addUser(@RequestBody User user) {
+        userRepository.save(user);
+    }
+}

src/main/java/quickstart/UserRepository.java

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+package quickstart;
+
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface UserRepository extends CrudRepository<User, Long>{}

src/test/java/quickstart/AppTest.java

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+package quickstart;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+/**
+ * Unit test for simple App.
+ */
+public class AppTest 
+{
+    /**
+     * Rigorous Test :-)
+     */
+    @Test
+    public void shouldAnswerWithTrue()
+    {
+        assertTrue( true );
+    }
+}