# spring-data-jpa-study

**Repository Path**: wangzunbin/spring-data-jpa-study

## Basic Information

- **Project Name**: spring-data-jpa-study
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2020-06-27
- **Last Updated**: 2020-12-19

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

---
title: Spring Data JPA学习
date: 2019-08-06 18:40:42
tags:
	 - spring data jpa
---

> 视频地址: https://www.bilibili.com/video/av48767030

## day1

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806184140.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806185009.png)

1. 操作繁琐
2. 占位符赋值麻烦

如何解决？

Jdbc封装工具类



### 1. orm思想

主要目的: 操作实体类就相当于操作数据库表

建立两个映射关系:

​	实体类和表的映射关系

​	实体类中属性和字段的映射关系

不在重点关注: sql语句



实现了 ORM思想的框架: mybatis， hibernate

### 2. hibernate框架介绍

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806185511.png)

### 3. JPA规范

jpa规范，实现jpa规范，内部是由接口和抽象类组成

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806185926.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806190247.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806191128.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806191913.png)

### 4. jpa的基本操作

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806193025.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806193213.png)

## day2

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806205610.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806205610.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806210333.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806212703.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806212738.png)

## day3

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806212916.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806213335.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806215250.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806215415.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806215640.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806220000.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190806231053.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190807223632.png)

![](https://raw.githubusercontent.com/gaohanghang/images/master/img20190807223632.png)