springboot如何连接mysql增删改查？

1、在pom.xml中增加依赖，mysql与jdbc

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>

#集成mysql数据库的配置
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/studentscon?useSSL=false&useUnicode=true&characterEncoding=utf-8&autoReconnect=true&serverTimezone=Asia/Shanghai
spring.datasource.username=root
spring.datasource.password=root

3、然后定义个entity实体类

public class Student {
    private int id;
    private String name;
    private String password;
    private String sex;
    private int age;

    public Student() {
    }

    public Student(int id, String name, String password, String sex, int age) {
        this.id = id;
        this.name = name;
        this.password = password;
        this.sex = sex;
        this.age = age;
    }

    @Override
    public String toString() {
        return "Student{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", pass...

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