一、通过jedis连接数据库

1.首先导入依赖

        <!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>5.1.0</version>
        </dependency>

2。写出主机号和端口

package com.easy;

import redis.clients.jedis.Jedis;

import java.util.Set;

public class EasyRedisA {
    public static void main(String[] args) {
        //通过jedis连接数据库
        Jedis jedis=new Jedis("127.0.0.1",6379);
        System.out.println("连接成功");
        String result=jedis.ping();
        System.out.println("ping的结果是"+result);
        result=jedis.set("easyname","何容与");
        System.out.println("set结果是                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      "+result);

        //获取所有的key
        Set<String> keys=jedis.keys("*");
        //打印每一个key
        for(String key:keys){
            System.out.println(key);
        }
        jedis.close();
    }
}

二、SpringBoot整合

1.导入依赖

2.yml配置

3.定义实体类

package org.example.bean;

import java.io.Serializable;

public class Student implements Serializable {
    private static final long serialVersionUID=1;
    private int id;
    private String name;
    private int score;
    private String sex;

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public int getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getScore() {
        return score;
    }

    public void setScore(int score) {
        this.score = score;
    }

    @Override
    public String toString() {
        return "Student{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", score=" + score +
                '}';
    }
}

4.控制类

package org.example.Controller;

import org.example.bean.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

@RestController
public class EasyRedisController {
    //    @Autowired
//    //byType
//    @Resource
//            //byName
    @Autowired
    RedisTemplate redisTemplate;
    @RequestMapping("addname")
    public String addString(){
        redisTemplate.opsForValue().set("name","xxc");
        return "ok";
    }
    @RequestMapping("getname")
    public String getStr(){
       Object obj= redisTemplate.opsForValue().get("name");
       return obj.toString();
    }
    @RequestMapping("addobj")
    public String addObj(){
        Student student=new Student();
        student.setId(1);
        student.setName("何容与");
        student.setScore(99);
        redisTemplate.opsForValue().set("student",student);
        return "ok";
    }
    @RequestMapping("getobj")
    public Student getObj(){
        Object obj=redisTemplate.opsForValue().get("student");
        return (Student)obj;
    }
}

通过反序列化获得Student对象，要确保Student类能被反序列化。