<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>
<!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.4.1212</version>
</dependency>
spring.datasource.url=jdbc:postgresql://localhost:5432/your-database spring.datasource.username=postgres spring.datasource.password=postgres spring.jpa.database=POSTGRESQL spring.jpa.show-sql=true spring.jpa.hibernate.ddl-auto=create-drop spring.jpa.generate-ddl=true
package cn.netkiller;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
import org.springframework.scheduling.annotation.EnableScheduling;
@SpringBootApplication
@EnableAutoConfiguration
@ComponentScan
@EnableMongoRepositories
@EnableJpaRepositories
@EnableScheduling
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
Model Class
package cn.netkiller.model;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "customer")
public class Customer implements Serializable {
private static final long serialVersionUID = -3009077722242246666L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private long id;
@Column(name = "firstname")
private String firstName;
@Column(name = "lastname")
private String lastName;
protected Customer() {
}
public Customer(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
@Override
public String toString() {
return String.format("Customer[id=%d, firstName='%s', lastName='%s']", id, firstName, lastName);
}
}
CrudRepository
package cn.netkiller.repository;
import java.util.List;
import org.springframework.data.repository.CrudRepository;
import cn.netkiller.model.Customer;
public interface CustomerRepository extends CrudRepository<Customer, Long>{
List<Customer> findByFirstName(String firstName);
List<Customer> findByLastName(String lastName);
}
@Autowired
private JdbcTemplate jdbcTemplate;
@RequestMapping(value = "/jdbc")
public @ResponseBody String dailyStats(@RequestParam Integer id) {
String query = "SELECT id, firstname, lastname from customer where id = " + id;
return jdbcTemplate.queryForObject(query, (resultSet, i) -> {
System.out.println(resultSet.getLong(1)+","+ resultSet.getString(2)+","+ resultSet.getString(3));
return (resultSet.getLong(1)+","+ resultSet.getString(2)+","+ resultSet.getString(3));
});
}
package cn.netkiller.web;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
import cn.netkiller.model.Customer;
import cn.netkiller.repository.CustomerRepository;
@Controller
@RequestMapping("/test/pgsql")
public class TestPostgreSQLController {
@Autowired
private CustomerRepository customerRepository;
@RequestMapping("/save")
public @ResponseBody String process() {
customerRepository.save(new Customer("Neo", "Chan"));
customerRepository.save(new Customer("Luke", "Liu"));
customerRepository.save(new Customer("Ran", "Guo"));
customerRepository.save(new Customer("Joey", "Chen"));
customerRepository.save(new Customer("Larry", "Huang"));
return "Done";
}
@RequestMapping("/findall")
public @ResponseBody String findAll() {
String result = "<html>";
for (Customer cust : customerRepository.findAll()) {
result += "<div>" + cust.toString() + "</div>";
}
return result + "</html>";
}
@RequestMapping("/findbyid")
public @ResponseBody String findById(@RequestParam("id") long id) {
String result = "";
result = customerRepository.findOne(id).toString();
return result;
}
@RequestMapping("/findbylastname")
public @ResponseBody String fetchDataByLastName(@RequestParam("lastname") String lastName) {
String result = "<html>";
for (Customer cust : customerRepository.findByLastName(lastName)) {
result += "<div>" + cust.toString() + "</div>";
}
return result + "</html>";
}
@Autowired
private JdbcTemplate jdbcTemplate;
@RequestMapping(value = "/jdbc")
public @ResponseBody String dailyStats(@RequestParam Integer id) {
String query = "SELECT id, firstname, lastname from customer where id = " + id;
return jdbcTemplate.queryForObject(query, (resultSet, i) -> {
System.out.println(resultSet.getLong(1)+","+ resultSet.getString(2)+","+ resultSet.getString(3));
return (resultSet.getLong(1)+","+ resultSet.getString(2)+","+ resultSet.getString(3));
});
}
}