SpringBoot整合spring-data-jpa的方法

<dependency>
	<groupId>com.zaxxer</groupId>
	<artifactId>HikariCP</artifactId>
</dependency>
<dependency>
	<groupId>mysql</groupId>
	<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>

spring:
 data:
 jpa:
  repositories:
  # 开启jpa
  enabled: true
  bootstrap-mode: default
 jpa:
 # 数据库方言
 database-platform: org.hibernate.dialect.MySQL57Dialect
 open-in-view: false
 # 打印SQL
 show-sql: false
 properties:
  # 格式化输出的SQL语句
  hibernate.format_sql: false
 hibernate:
  # 自动建表策略
  ddl-auto: update

# 枚举值
spring.jpa.hibernate.ddl-auto
create				不管表是否存在, 每次启动都会重新建表(会导致数据丢失)
create-drop			启动的时候创建表, 程序退出(SessionFactory关闭)的时候删除表
none				不进行任何操作
update				如果数据表不存在则创建, 在实体对象被修改后,下次启动重新修改表结构(不会删除已经存在的数据)
validate			启动的时候验证数据表的结构, 

JpaProperties
SpringDataWebProperties
HibernateProperties

import java.io.Serializable;
import java.time.LocalDateTime;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Index;
import javax.persistence.Table;

// 指定表名称
@Table(name = "user", indexes = {
	// 定义索引
	@Index(columnList = "account", unique = true) 
})
// 标识实体类
@Entity
// 设置表注释
@org.hibernate.annotations.Table(appliesTo = "user", comment = "用户")
public c<b>本文来源gao@dai!ma.com搞$代^码!网7</b>lass User implements Serializable {

	/**
	 * 
	 */
	private static final long serialVersionUID = 4953012795378725917L;

	@Id // id 字段
	@Column(columnDefinition = "INT(11) UNSIGNED COMMENT 'id'")
	@GeneratedValue(strategy = GenerationType.IDENTITY) // 自增
	private Integer id;

	// 账户
	@Column(columnDefinition = "VARCHAR(50) COMMENT '登录账户'", nullable = false)
	private String account;

	// 密码
	@Column(columnDefinition = "VARCHAR(255) COMMENT '登录密码'", nullable = false)
	private String password;

	// 性别
	@Column(columnDefinition = "TINYINT(1) COMMENT '性别。0：男，1：女'", nullable = false)
	@Enumerated
	private Gender gender;

	// 创建时间
	@Column(name = "created_date", columnDefinition = "timestamp DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间'", nullable = false)
	private LocalDateTime createdDate;

	// 最后修改时间
	@Column(name = "last_modified_date", columnDefinition = "timestamp NULL DEFAULT NULL COMMENT '最后一次修改时间'")
	private LocalDateTime lastModifiedDate;

	// 记录状态
	@Column(columnDefinition = "TINYINT(1) unsigned COMMENT '是否启用'", nullable = false)
	private Boolean enabled;

	public Integer getId() {
		return id;
	}

	public void setId(Integer id) {
		this.id = id;
	}

	public String getAccount() {
		return account;
	}

	public void setAccount(String account) {
		this.account = account;
	}

	public String getPassword() {
		return password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public Gender getGender() {
		return gender;
	}

	public void setGender(Gender gender) {
		this.gender = gender;
	}

	public LocalDateTime getCreatedDate() {
		return createdDate;
	}

	public void setCreatedDate(LocalDateTime createdDate) {
		this.createdDate = createdDate;
	}

	public LocalDateTime getLastModifiedDate() {
		return lastModifiedDate;
	}

	public void setLastModifiedDate(LocalDateTime lastModifiedDate) {
		this.lastModifiedDate = lastModifiedDate;
	}

	public Boolean getEnabled() {
		return enabled;
	}

	public void setEnabled(Boolean enabled) {
		this.enabled = enabled;
	}

	@Override
	public String toString() {
		return "User [id=" + id + ", account=" + account + ", password=" + password + ", gender=" + gender
				+ ", createdDate=" + createdDate + ", lastModifiedDate=" + lastModifiedDate + ", enabled=" + enabled
				+ "]";
	}

	public static enum Gender {
		BOY, GIRL
	}
}