Hello world API

[priyanshi bhardwaj]

create a simple hello world project and one controller/api

call it using postman to see the results ?
how to do it

[Bear Bibeault]

By doing your best to solve the problem with what you know, and then coming here to ask specific questions about problems that you are having.

[priyanshi bhardwaj]

i am facing this issues
Parameter 0 of constructor in org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration required a bean of type 'javax.sql.DataSource' that could not be found.
- Bean method 'dataSource' not loaded because @ConditionalOnProperty (spring.datasource.jndi-name) did not find property 'jndi-name'
- Bean method 'dataSource' not loaded because @ConditionalOnBean (types: org.springframework.boot.jta.XADataSourceWrapper; SearchStrategy: all) did not find any beans

pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>

<groupId>org.springframework</groupId>
<artifactId>gs-accessing-data-jpa</artifactId>
<version>0.1.0</version>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
</parent>

<properties>
<java.version>1.8</java.version>
</properties>

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</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>

<repositories>
<repository>
<id>spring-releases</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>;
</repository>
<repository>
<id>org.jboss.repository.releases</id>
<name>JBoss Maven Release Repository</name>
<url>https://repository.jboss.org/nexus/content/repositories/releases</url>;
</repository>
</repositories>

<pluginRepositories>
<pluginRepository>
<id>spring-releases</id>
<name>Spring Releases</name>
<url>https://repo.spring.io/libs-release</url>;
</pluginRepository>
</pluginRepositories>

</project>

package com.example.jpadataacc.entity;
import org.springframework.data.annotation.Id;

import javax.persistence.Entity;
import javax.persistence.Table;
/**
 * Created by itrs on 5/26/2017.
 */
@Entity
@Table(name= "emp500")
public class Customer {

        @Id

        public String id;

    public String firstName;
    public String lastName;

    public Customer() {
    }

    public Customer(String firstName, String lastName) {
        this.firstName = firstName;
        this.lastName = lastName;
    }

    @Override
    public String toString() {
        return String.format(
                "Customer[id=%s, firstName='%s', lastName='%s']",
                id, firstName, lastName);
    }

    }

 customer repository
package com.example.jpadataacc.jpa;

import java.util.List;

import com.example.jpadataacc.entity.Customer;
import org.springframework.data.mongodb.repository.MongoRepository;

public interface CustomerRepository extends MongoRepository<Customer, String> {

    Customer findByFirstName(String firstName);
    List<Customer> findByLastName(String lastName);

}

package com.example.jpadataacc;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.example.jpadataacc.jpa.CustomerRepository;
import com.example.jpadataacc.entity.Customer;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.context.annotation.Bean;

@SpringBootApplication
@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})
public class JpadataaccApplication {
	private static final Logger log = LoggerFactory.getLogger(JpadataaccApplication.class);


	public static void main(String[] args) {
		SpringApplication.run(JpadataaccApplication.class, args);

	}

	@Bean
	public CommandLineRunner demo(CustomerRepository repository) {
		return (args) -> {
			// save a couple of customers
			repository.save(new Customer("Jack", "Bauer"));
			repository.save(new Customer("Chloe", "O'Brian"));
			repository.save(new Customer("Kim", "Bauer"));
			repository.save(new Customer("David", "Palmer"));
			repository.save(new Customer("Michelle", "Dessler"));

			// fetch all customers
			log.info("Customers found with findAll():");
			log.info("-------------------------------");
			for (Customer customer : repository.findAll()) {
				log.info(customer.toString());
			}
			log.info("");

			// fetch an individual customer by ID
			//Customer customer = repository.findOne();
		//	log.info("Customer found with findOne(1L):");
		//	log.info("--------------------------------");
		//	log.info(customer.toString());
		//	log.info("");

			// fetch customers by last name
			log.info("Customer found with findByLastName('Bauer'):");
			log.info("--------------------------------------------");
			for (Customer bauer : repository.findByLastName("Bauer")) {
				log.info(bauer.toString());
			}
			log.info("");
		};
	}

}

[priyanshi bhardwaj]

actually i am trying to access data jpa

[Jesper de Jong]

You added a line in your code to specifically disable automatic configuration of the DataSource:

@EnableAutoConfiguration(exclude={DataSourceAutoConfiguration.class})

But you didn't configure a DataSource yourself, and so Spring Boot complains that it cannot find a DataSource bean.

Either let Spring do it automatically for you, or configure a DataSource bean yourself.

[priyanshi bhardwaj]

i am facing another problem now
Cannot determine embedded database driver class for database type NONE
can you please help me with this one too