Spring Boot集成SQL Server快速入门Demo

1.什么是SQL Server？

SQL Server是由Microsoft开发和推广的以客户/服务器（c/s）模式访问、使用Transact-SQL语言的关系数据库管理系统（DBMS），它最初是由Microsoft、Sybase和Ashton-Tate三家公司共同开发的，并于1988年推出了第一个OS/2版本。Microsoft SQL Server近年来不断更新版本，1996年，Microsoft 推出了SQL Server 6.5版本；1998年，SQL Server 7.0版本和用户见面；SQL Server 2000是Microsoft公司于2000年推出，目前最新版本是2019年份推出的SQL SERVER 2019。 提供的主要功能：

支持存储过程、触发器、函数和视图
本机支持关系数据、XML、FILESTREAM 和空间数据，可存储所有类型的业务数据
除与 SQL Server Reporting Services 中的 Microsoft 2007 Office System 集成外，还改进了性能、可用性、可视化
通过利用现有的 T-SQL 技术、ADO.NET 实体框架和 LINQ 简化开发工作
与 Visual Studio 和 Visual Web Developer 紧密集成

SQL Server 2019 更是使用统一的数据平台实现业务转型，附带 Apache Spark 和 Hadoop Distributed File System（HDFS），可实现所有数据的智能化。

2.环境搭建

pull images

sudo docker pull mcr.microsoft.com/mssql/server:2022-latest

create a container

docker run -e "ACCEPT_EULA=Y" -e "SA_PASSWORD=Y.sa123456" -p 1433:1433 --name mssql2022 -d mcr.microsoft.com/mssql/server:2022-latest

default user/password: sa / Y.sa123456

init datas

CREATE DATABASE SampleDB;
USE SampleDB;

#JPA AUTO CREATE TABLE

INSERT INTO Employees (first_name, last_name, birth_date, hire_date, position)
VALUES 
('John', 'Doe', '1980-01-15', '2010-06-01', 'Manager'),
('Jane', 'Smith', '1990-07-22', '2015-09-15', 'Developer'),
('Emily', 'Jones', '1985-03-10', '2012-11-20', 'Designer');

3.代码工程

实验目的

Spring Boot对SQL Server 数据库CRUD 操作

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="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">
    <parent>
        <artifactId>springboot-demo</artifactId>
        <groupId>com.et</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>sqlserver</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-autoconfigure</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>com.microsoft.sqlserver</groupId>
            <artifactId>mssql-jdbc</artifactId>
            <version>9.4.0.jre8</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>
    </dependencies>
</project>

controller

package com.et.controller;

import com.et.entity.Employee;
import com.et.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping("/api/employees")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    @GetMapping
    public List<Employee> getAllEmployees() {
        return employeeService.getAllEmployees();
    }

    @GetMapping("/{id}")
    public ResponseEntity<Employee> getEmployeeById(@PathVariable Integer id) {
        return employeeService.getEmployeeById(id)
                .map(ResponseEntity::ok)
                .orElse(ResponseEntity.notFound().build());
    }

    @PostMapping
    public Employee addEmployee(@RequestBody Employee employee) {
        return employeeService.addEmployee(employee);
    }

    @PutMapping("/{id}")
    public ResponseEntity<Employee> updateEmployee(@PathVariable Integer id, @RequestBody Employee employeeDetails) {
        return ResponseEntity.ok(employeeService.updateEmployee(id, employeeDetails));
    }

    @DeleteMapping("/{id}")
    public ResponseEntity<Void> deleteEmployee(@PathVariable Integer id) {
        employeeService.deleteEmployee(id);
        return ResponseEntity.noContent().build();
    }
}

service

package com.et.service;

import com.et.entity.Employee;
import com.et.reponsitory.EmployeeRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.NoSuchElementException;
import java.util.Optional;

@Service
public class EmployeeService {

    @Autowired
    private EmployeeRepository employeeRepository;

    public List<Employee> getAllEmployees() {
        return employeeRepository.findAll();
    }

    public Optional<Employee> getEmployeeById(Integer id) {
        return employeeRepository.findById(id);
    }

    public Employee addEmployee(Employee employee) {
        return employeeRepository.save(employee);
    }

    public Employee updateEmployee(Integer id, Employee employeeDetails) {
        Employee employee = employeeRepository.findById(id).orElseThrow(RuntimeException::new);
        employee.setFirstName(employeeDetails.getFirstName());
        employee.setLastName(employeeDetails.getLastName());
        employee.setBirthDate(employeeDetails.getBirthDate());
        employee.setHireDate(employeeDetails.getHireDate());
        employee.setPosition(employeeDetails.getPosition());
        return employeeRepository.save(employee);
    }

    public void deleteEmployee(Integer id) {
        employeeRepository.deleteById(id);
    }
}

reponsitory

package com.et.reponsitory;

import com.et.entity.Employee;
import org.springframework.data.jpa.repository.JpaRepository;

public interface EmployeeRepository extends JpaRepository<Employee, Integer> {
}

application.properties

server.port=8088
spring.datasource.url=jdbc:sqlserver://127.0.0.1:1433;databaseName=SampleDB
spring.datasource.username=sa
spring.datasource.password=Y.sa123456
spring.jpa.hibernate.ddl-auto=create
spring.jpa.show-sql=true

以上只是一些关键代码，所有代码请参见下面代码仓库