spring boot整合redis实现RedisTemplate三分钟快速入门

引入依赖

<dependency>
  <groupid>org.springframework.boot</groupid>
  <artifactid>spring-boot-starter-data-redis</artifactid>
</dependency>

redistemplate五种数据结构的操作

• redistemplate.opsforvalue(); //操作字符串
• redistemplate.opsforhash(); //操作hash
• redistemplate.opsforlist(); //操作list
• redistemplate.opsforset(); //操作set
• redistemplate.opsforzset(); //操作有序zset

redistemplate方法讲解

判断key是否存在

 /**
   * 判断key是否存在
   */
  @getmapping("haskey")
  public boolean haskey(string key) {
    return redistemplate.haskey(key);
  }

获取指定的key的失效时间

 /**
   * 指定key的失效时间
   */
  @getmapping("expire")
  public void expire(string key, long time) {
    //参数一：key
    //参数二：睡眠时间
    //参数三：睡眠时间单位 timeunit.days 天 timeunit.hours 小时 。。。
    redistemplate.expire(key, time, timeunit.minutes);
  }

根据key获取过期时间

 /**
   * 根据key获取过期时间
   */
  @getmapping("getexpire")
  public long getexpire(string key) {
    long expire = redistemplate.getexpire(key);
    return expire;
  }

根据key删除reids中缓存数据

 /**
   * 根据key删除reids中缓存数据
   */
  @getmapping("delredisbykey")
  public void delete(string key) {
    redistemplate.delete(key);
  }

保存和读取string

 /**
   * 保存和读取string
   */
  @getmapping("stringredisdemo")
  public string stringredisdemo() {
    //设置过期时间为1分钟
    redistemplate.opsforvalue().set("key1", "value1", 1, timeunit.minutes);
    redistemplate.opsforvalue().set("key2", "value2");
    redistemplate.opsforvalue().set("key3", "value3");
    //读取redis数据
    string result1 = redistemplate.opsforvalue().get("key1").tostring();
    string result2 = redistemplate.opsforvalue().get("key2").tostring();
    string result3 = redistemplate.opsforvalue().get("key3").tostring();
    system.out.println("缓存结果为：result：" + result1 + " " + result2 + "  " + result3);
    return "缓存结果为：result：" + result1 + " " + result2 + "  " + result3;
  }

保存和读取list

 /**
   * 保存和读取list
   */
  @getmapping("listredisdemo")
  public string listredisdemo() {
    list<string> list1 = new arraylist<>();
    list1.add("a1");
    list1.add("a2");
    list1.add("a3");
    list<string> list2 = new arraylist<>();
    list2.add("b1");
    list2.add("b2");
    list2.add("b3");
    redistemplate.opsforlist().leftpush("listkey1", list1);
    redistemplate.opsforlist().rightpush("listkey2", list2);
    list<string> resultlist1 = (list<string>) redistemplate.opsforlist().leftpop("listkey1");
    list<string> resultlist2 = (list<string>) redistemplate.opsforlist().rightpop("listkey2");
    system.out.println("resultlist1:" + resultlist1);
    system.out.println("resultlist2:" + resultlist2);
    return "成功";
  }

hash结构，保存和读取map

 /**
   * hash结构，保存和读取map
   */
  @getmapping("mapredisdemo")
  public string mapredisdemo() {
    map<string, string> map = new hashmap<>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");
    map.put("key4", "value4");
    map.put("key5", "value5");
    redistemplate.opsforhash().putall("map1", map);
    map<string, string> resultmap = redistemplate.opsforhash().entries("map1");
    list<string> reslutmaplist = redistemplate.opsforhash().values("map1");
    set<string> resultmapset = redistemplate.opsforhash().keys("map1");
    string value = (string) redistemplate.opsforhash().get("map1", "key1");
    system.out.println("value:" + value);
    system.out.println("resultmapset:" + resultmapset);
    system.out.println("resultmap:" + resultmap);
    system.out.println("resulreslutmaplisttmap:" + reslutmaplist);
    return "成功";
  }

保存和读取set

 /**
   * 保存和读取set
   */
  @getmapping("setredisdemo")
  public string getredisdemo() {
    setoperations<string, string> set = redistemplate.opsforset();
    set.add("key1", "value1");
    set.add("key1", "value2");
    set.add("key1", "value3");
    set<string> resultset = redistemplate.opsforset().members("key1");
    system.out.println("resultset:" + resultset);
    return "resultset:" + resultset;
  }

保存和读取zset

 /**
   * 保存和读取zset
   */
  @getmapping("zsetredisdemo")
  public string zsetredisdemo() {
    zsetoperations.typedtuple<object> objecttypedtuple1 = new defaulttypedtuple<>("zset-5", 9.6);
    zsetoperations.typedtuple<object> objecttypedtuple2 = new defaulttypedtuple<>("zset-6", 9.9);
    set<zsetoperations.typedtuple<object>> tuples = new hashset<>();
    tuples.add(objecttypedtuple1);
    tuples.add(objecttypedtuple2);
    system.out.println(redistemplate.opsforzset().add("zset1", tuples));
    system.out.println(redistemplate.opsforzset().range("zset1", 0, -1));
    return "成功";
  }

完整示例代码

import org.springframework.beans.factory.annotation.autowired;
import org.springframework.data.redis.core.defaulttypedtuple;
import org.springframework.data.redis.core.redistemplate;
import org.springframework.data.redis.core.setoperations;
import org.springframework.data.redis.core.zsetoperations;
import org.springframework.web.bind.annotation.getmapping;
import org.springframework.web.bind.annotation.restcontroller;

import java.util.*;
import java.util.concurrent.timeunit;

@restcontroller
public class reidsdemo {

  @autowired
  redistemplate redistemplate;

  /**
   * 指定key的失效时间
   */
  @getmapping("expire")
  public void expire(string key, long time) {
    //参数一：key
    //参数二：睡眠时间
    //参数三：睡眠时间单位 timeunit.days 天 timeunit.hours 小时 。。。
    redistemplate.expire(key, time, timeunit.minutes);
  }

  /**
   * 根据key获取过期时间
   */
  @getmapping("getexpire")
  public long getexpire(string key) {
    long expire = redistemplate.getexpire(key);
    return expire;
  }

  /**
   * 判断key是否存在
   */
  @getmapping("haskey")
  public boolean haskey(string key) {
    return redistemplate.haskey(key);
  }

  /**
   * 根据key删除reids中缓存数据
   */
  @getmapping("delredisbykey")
  public void delete(string key) {
    redistemplate.delete(key);
  }

  /**
   * 保存和读取string
   */
  @getmapping("stringredisdemo")
  public string stringredisdemo() {
    //设置过期时间为1分钟
    redistemplate.opsforvalue().set("key1", "value1", 1, timeunit.minutes);
    redistemplate.opsforvalue().set("key2", "value2");
    redistemplate.opsforvalue().set("key3", "value3");
    //读取redis数据
    string result1 = redistemplate.opsforvalue().get("key1").tostring();
    string result2 = redistemplate.opsforvalue().get("key2").tostring();
    string result3 = redistemplate.opsforvalue().get("key3").tostring();
    system.out.println("缓存结果为：result：" + result1 + " " + result2 + "  " + result3);
    return "缓存结果为：result：" + result1 + " " + result2 + "  " + result3;
  }

  /**
   * 保存和读取list
   */
  @getmapping("listredisdemo")
  public string listredisdemo() {
    list<string> list1 = new arraylist<>();
    list1.add("a1");
    list1.add("a2");
    list1.add("a3");
    list<string> list2 = new arraylist<>();
    list2.add("b1");
    list2.add("b2");
    list2.add("b3");
    redistemplate.opsforlist().leftpush("listkey1", list1);
    redistemplate.opsforlist().rightpush("listkey2", list2);
    list<string> resultlist1 = (list<string>) redistemplate.opsforlist().leftpop("listkey1");
    list<string> resultlist2 = (list<string>) redistemplate.opsforlist().rightpop("listkey2");
    system.out.println("resultlist1:" + resultlist1);
    system.out.println("resultlist2:" + resultlist2);
    return "成功";
  }

  /**
   * hash结构，保存和读取map
   */
  @getmapping("mapredisdemo")
  public string mapredisdemo() {
    map<string, string> map = new hashmap<>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");
    redistemplate.opsforhash().putall("map1", map);
    map<string, string> resultmap = redistemplate.opsforhash().entries("map1");
    list<string> reslutmaplist = redistemplate.opsforhash().values("map1");
    set<string> resultmapset = redistemplate.opsforhash().keys("map1");
    string value = (string) redistemplate.opsforhash().get("map1", "key1");
    system.out.println("value:" + value);
    system.out.println("resultmapset:" + resultmapset);
    system.out.println("resultmap:" + resultmap);
    system.out.println("resulreslutmaplisttmap:" + reslutmaplist);
    return "成功";
  }

  /**
   * 保存和读取set
   */
  @getmapping("setredisdemo")
  public string getredisdemo() {
    setoperations<string, string> set = redistemplate.opsforset();
    set.add("key1", "value1");
    set.add("key1", "value2");
    set.add("key1", "value3");
    set<string> resultset = redistemplate.opsforset().members("key1");
    system.out.println("resultset:" + resultset);
    return "resultset:" + resultset;
  }

  /**
   * 保存和读取zset
   */
  @getmapping("zsetredisdemo")
  public string zsetredisdemo() {
    zsetoperations.typedtuple<object> objecttypedtuple1 = new defaulttypedtuple<>("zset-5", 9.6);
    zsetoperations.typedtuple<object> objecttypedtuple2 = new defaulttypedtuple<>("zset-6", 9.9);
    set<zsetoperations.typedtuple<object>> tuples = new hashset<>();
    tuples.add(objecttypedtuple1);
    tuples.add(objecttypedtuple2);
    system.out.println(redistemplate.opsforzset().add("zset1", tuples));
    system.out.println(redistemplate.opsforzset().range("zset1", 0, -1));
    return "成功";
  }
}

序列化

直接粘贴在项目中即可

import org.springframework.context.annotation.bean;
import org.springframework.context.annotation.configuration;
import org.springframework.data.redis.connection.redisconnectionfactory;
import org.springframework.data.redis.core.redistemplate;
import org.springframework.data.redis.serializer.genericjackson2jsonredisserializer;
import org.springframework.data.redis.serializer.redisserializer;
import org.springframework.data.redis.serializer.stringredisserializer;

/*
*序列化
 */
@configuration
public class myredisconfig {

  @bean(name = "redistemplate")
  public redistemplate<string, object> redistemplate(redisconnectionfactory redisconnectionfactory){
    redistemplate<string, object> redistemplate = new redistemplate<>();
    //参照stringredistemplate内部实现指定序列化器
    redistemplate.setconnectionfactory(redisconnectionfactory);
    redistemplate.setkeyserializer(keyserializer());
    redistemplate.sethashkeyserializer(keyserializer());
    redistemplate.setvalueserializer(valueserializer());
    redistemplate.sethashvalueserializer(valueserializer());
    return redistemplate;
  }

  private redisserializer<string> keyserializer(){
    return new stringredisserializer();
  }

  //使用jackson序列化器
  private redisserializer<object> valueserializer(){
    return new genericjackson2jsonredisserializer();
  } 
}

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