文章目录
- [1、Redis 基本操作](#1、Redis 基本操作)
- [2、Redis 数据类型](#2、Redis 数据类型)
- [3、Spring Boot 整合 Redis](#3、Spring Boot 整合 Redis)
1、Redis 基本操作
Redis 默认有 16 个数据库，使用的是第 0 个，切换数据库
select 0添加数据/修改数据
set key value查询数据
get key批量添加
mset k1 v1 k2 v2...批量查询
mget k1 k2 删除数据
del key查询所有的 key
keys *清除当前数据库
flushdb清除所有数据库
flushall查看 key 是否存在
exists key设置有效期
expire key 10查看有效期
ttl key2、Redis 数据类型
String
追加字符串
append key value查看字符串长度
strlen key自增
incr key递减
decr key指定递增长度
incrby k v指定递减长度
decrby k v字符串截取
getrange k start end修改局部字段
setrange k start vList
从左侧添加
lpush k v...从右侧添加
rpush k v...取值
lrange k start end删除，左侧移除
lpop k右侧移除
rpop k通过下标获取值
lindex k index删除集合中指定的值，count 是删除的个数
lrem k count v通过下标修改集合中的值
lset k index v获取长度
llen k截取list
ltrim k start end查看集合是否存在
exists kSet
添加数据
sadd k v查询数据
smembers k判断集合中是否存在某个值
sismember k v获取集合长度
scard k删除元素
srem k v1 v2...随机取值
srandmember kHash
存值
hset hash k1 v1 k2 v2取值
hget hash k1存多个值
hmset hash k1 a k2 b k3 c取多个值
hmget hash k1 k2 k3取所有值
hgetall hash删除数据
hdel hash k1 k2获取长度
hlen k判断集合中是否存在某个值
hexists hahs k获取集合中所有 key
hkeys hash获取集合中所有 value
hvals hashZset
添加数据
zadd set index v查询数据
zrange set 0 -1升序查询
zrangebyscore score -inf +inf withscores降序查询
zrevrange score 0 -1 withscores删除数据
zrem score jack3、Spring Boot 整合 Redis
Spring Data Redis
xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!-- Swagger -->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.9.2</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.9.2</version>
</dependency>
yaml
spring:
redis:
database: 0
host: 192.168.248.138
port: 6379
java
package com.southwind.entity;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.io.Serializable;
import java.util.Date;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Student implements Serializable {
private Integer id;
private String name;
private Double score;
private Date birthday;
}
java
package com.southwind.controller;
import com.southwind.entity.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.*;
@RestController
public class StudentController {
@Autowired
private RedisTemplate redisTemplate;
@PostMapping("/set")
public void set(@RequestBody Student student){
this.redisTemplate.opsForValue().set("stu", student);
}
@GetMapping("/get/{key}")
public Student get(@PathVariable("key") String key){
return (Student) this.redisTemplate.opsForValue().get(key);
}
@PutMapping("/put")
public void update(@RequestBody Student student){
this.redisTemplate.opsForValue().set("stu", student);
}
@DeleteMapping("/delete/{key}")
public Boolean delete(@PathVariable("key") String key){
this.redisTemplate.delete(key);
return this.redisTemplate.hasKey(key);
}
}
java
package com.southwind.configuration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;
@Configuration
@EnableSwagger2
public class SwaggerConfiguration {
@Bean
public Docket createRestApi() {
return new Docket(DocumentationType.SWAGGER_2)
.select()
.apis(RequestHandlerSelectors.basePackage("com.southwind"))
.build().apiInfo(new ApiInfoBuilder()
.title("Redis测试")
.description("测试")
.version("V1.0")
.build());
}
}字符串
java
@PostMapping("/string")
public String string(){
String str = "Hello World";
this.redisTemplate.opsForValue().set("str", str);
return (String) this.redisTemplate.opsForValue().get("str");
}List
java
@PostMapping("/list")
public void list(){
ListOperations<String,String> list = redisTemplate.opsForList();
list.leftPush("list", "Hello");
list.leftPush("list", "World");
list.leftPush("list","Java");
list.rightPush("list", "1");
list.rightPush("list", "2");
list.rightPush("list", "3");
}Set
java
@PostMapping("/setadd")
public void setadd(){
SetOperations<String,String> set = this.redisTemplate.opsForSet();
set.add("set", "Hello");
set.add("set", "World");
set.add("set", "Java");
}Zset
java
@PostMapping("/zset")
public void zset(){
ZSetOperations<String,String> set = this.redisTemplate.opsForZSet();
set.add("zset", "Hello",1);
set.add("zset", "World",2);
set.add("zset", "Java",3);
}Hash
java
@PostMapping("/hash")
public void hash(){
HashOperations<String,String,String> hash = this.redisTemplate.opsForHash();
hash.put("hash", "id", "1");
hash.put("hash", "name", "tom");
hash.put("hash", "age","22" );
}