spring boot jpa example:
poject structure:
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pom.xml
StudentRepository.java
SPRING-AOP-ANNOTATIONS SPRING -DAO SPRIN-MVC SPRING-SECUTITY
SPRING-DATA-JPA REST-WEB-SERVICE STRUTS2HIBERNATE GWT....poject structure:
Application.properties
spring.datasource.url= jdbc:mysql://localhost:3306/mysql
spring.datasource.username=root
spring.datasource.password=mysql1
server.port=8484
spring.jpa.generate-ddl=true
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=true
pom.xml
<?xmlversion="1.0"encoding="UTF-8"?>
<projectxmlns="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.example</groupId>
<artifactId>mysqljpaex</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>mysqljpaex</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.8.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>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>1.5.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</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>
</project>
JdbcTestAPI.java
package com.example.demo;
import java.sql.SQLException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
publicclassJdbcTestAPI{
@Autowired
JdbcTemplate jdbcTemplate;
@Autowired
StudentRepository studentRepository;
@GetMapping("/getDataBaseName")
public String getDatabasename() {
try {
Student student=new Student();
student.setId(55);
student.setFname("adhav");
student.setLname("goddati");
student.setEmail("abc@gmail.cm");
studentRepository.save(student);
//jdbcTemplate.update("insert into student values(2,'madhav','ro','abc@gmail.com')");
returnjdbcTemplate.getDataSource().getConnection().getMetaData().getDatabaseProductName();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
returnnull;
}
}
Student.java
package com.example.demo;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "student")
public class Student {
@Id
@Column(name = "id")
private int id;
@Column(name = "firstname")
private String fname;
@Column(name = "lastname")
private String lname;
@Column(name = "email")
private String email;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getFname() {
return fname;
}
public void setFname(String fname) {
this.fname = fname;
}
public String getLname() {
return lname;
}
public void setLname(String lname) {
this.lname = lname;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
StudentRepository.java
package com.example.demo;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
publicinterface StudentRepository extends JpaRepository<Student, Long>,
JpaSpecificationExecutor<Student>{
}
