1.创建一个普通的maven工程
2.配置pom.xml
3.配置数据源。在src/main/resources下新建一个application.properties文件
# 服务器访问端口
server.port=8080
# 数据库基本配置
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/springbootjpa
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.database=MYSQL
# 显示后台处理的SQL语句
spring.jpa.show-sql=true
# 自动检查实体和数据库表是否一致,如果不一致则会进行更新数据库表
spring.jpa.hibernate.ddl-auto=update
4.配置应用程序启动类,Application.java
package com.xiao.SpringBootJPA;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.web.servlet.ServletComponentScan;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.transaction.annotation.EnableTransactionManagement;
/**
* SpringBootJpa应用程序启动文件
* @author xiaosongsong:
* @CreateTime 创建时间:2018年8月10日 下午9:21:23
* 类说明
*/
@EnableAutoConfiguration
@EnableTransactionManagement
@ServletComponentScan
@ComponentScan
@EnableScheduling
public class Application
{
public static void main( String[] args )
{
System.out.println( "Hello World!" );
SpringApplication.run(Application.class, args);
}
}
5.创建实体Employee.java
package com.xiao.SpringBootJPA.entity;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
/**
* 职工类
* @author xiaosongsong:
* @CreateTime 创建时间:2018年8月10日 下午9:23:58
* 类说明
*/
@Entity
@Table(name="employee")
public class Employee implements Serializable {
private static final long serialVersionUID = -2544247758732046249L;
@Id
@Column(name="id")
private String id;
@Column(name="name")
private String name;
@Column(name="gender")
private String gender;
@Column(name="age")
private int age;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
}
6.创建repository接口
package com.xiao.SpringBootJPA.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
import com.xiao.SpringBootJPA.entity.Employee;
/**
* EmployeeRepository接口
* @author xiaosongsong:
* @CreateTime 创建时间:2018年8月10日 下午9:27:08
* 类说明
*/
@Repository
public interface EmployeeRepository extends JpaRepository
}
7.创建控制层
package com.xiao.SpringBootJPA.controller;
import java.util.ArrayList;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import com.xiao.SpringBootJPA.entity.Employee;
import com.xiao.SpringBootJPA.repository.EmployeeRepository;
/**
* 职工Controller
* @author xiaosongsong:
* @CreateTime 创建时间:2018年8月10日 下午9:30:30
* 类说明
*/
@RestController
@RequestMapping("/employee")
public class EmployeeController {
@Autowired
private EmployeeRepository employeeRepository;
@RequestMapping("/queryAll")
@ResponseBody
public List
List
list=employeeRepository.findAll();
return list;
}
}
8.启动应用程序,访问http://localhost:8080/employee/queryAll