1.在pom.xml中引入依赖
<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>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.62</version>
</dependency>
2.在application.yml进行配置
spring:
redis:
host: 47.114.114.78
port: 6379
3.解决序列化问题
3.1使用配置类解决json格式转换问题
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
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.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
@Configuration
public class RedisConfig {
@Bean
@SuppressWarnings("all")
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
template.setConnectionFactory(factory);
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
template.setKeySerializer(stringRedisSerializer);
template.setHashKeySerializer(stringRedisSerializer);
template.setValueSerializer(jackson2JsonRedisSerializer);
template.setHashValueSerializer(jackson2JsonRedisSerializer);
template.afterPropertiesSet();
return template;
}
}
3.2pojo对象要实现序列化
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.io.Serializable;
@AllArgsConstructor
@NoArgsConstructor
@Data
public class User implements Serializable {
private int id;
private String name;
}
4.使用redis官方api
import com.alibaba.fastjson.JSON;
import com.lsu.redis.pojo.User;
import com.lsu.redis.utils.RedisUtil;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.RedisTemplate;
@SpringBootTest
class RedisApplicationTests {
@Autowired
private RedisTemplate redisTemplate
@Test
void handleCode() {
User user = new User(1, "lsy");
String jsonUser = JSON.toJSONString(user);
redisTemplate.opsForValue().set("role", jsonUser);
System.out.println(redisTemplate.opsForValue().get("role"));
}
}
5.使用自定义Redis工具类进行简化官方api操作
5.1自定义工具类
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.connection.DataType;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import java.util.*;
import java.util.concurrent.TimeUnit;
@Component
public class RedisUtil {
@Autowired(required = false)
private RedisTemplate<String,Object> redisTemplate;
public Boolean exists(String key){
return redisTemplate.hasKey(key);
}
public String type(String key){
DataType dataType = redisTemplate.type(key);
assert dataType != null;
return dataType.code();
}
public boolean expire(String key,long time){
try {
if (time > 0){
redisTemplate.expire(key,time, TimeUnit.SECONDS);
}
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public long getExpire(String key){
return redisTemplate.getExpire(key,TimeUnit.SECONDS);
}
public boolean hasKey(String key){
try{
return redisTemplate.hasKey(key);
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public long delete(String... key){
if (key == null || key.length < 1){
return 0l;
}
return redisTemplate.delete(Arrays.asList(key));
}
public Set<String> keys(){
Set<String> k = redisTemplate.keys("*");
return k;
}
public HashMap<Object,Object> getKeysValue(String keys){
Set<String> k = redisTemplate.keys("*");
HashMap<Object,Object> hashMap = new HashMap<Object, Object>();
for(String s : k) {
Object o = redisTemplate.opsForValue().get(keys + s);
System.out.println("o=" + o);
hashMap.put(k, o);
}
return hashMap;
}
public void del(String... key){
if (key != null && key.length > 0 ){
if (key.length == 1){
redisTemplate.delete(key[0]);
}else {
redisTemplate.delete((Collection<String>) CollectionUtils.arrayToList(key));
}
}
}
public Object get(String key){
return key == null ? null : redisTemplate.opsForValue().get(key);
}
public boolean set(String key,Object value){
try{
redisTemplate.opsForValue().set(key,value);
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public boolean set(String key,Object value,long time){
try{
if(time > 0){
redisTemplate.opsForValue().set(key,value,time,TimeUnit.SECONDS);
}else {
set(key,value);
}
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public long incr(String key,long delta){
if (delta < 0){
throw new RuntimeException("递增因子必须大于0");
}
return redisTemplate.opsForValue().increment(key, delta);
}
public long decr(String key,long delta){
if (delta < 0){
throw new RuntimeException("递减因子必须大于0");
}
return redisTemplate.opsForValue().increment(key,-delta);
}
public Object hget(String key,String item){
return redisTemplate.opsForHash().get(key,item);
}
public Map<Object, Object> hmget(String key){
return redisTemplate.opsForHash().entries(key);
}
public boolean hmset(String key,Map<String,Object> map){
try{
redisTemplate.opsForHash().putAll(key,map);
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public boolean hmset(String key,Map<String,Object> map,long time){
try {
redisTemplate.opsForHash().putAll(key,map);
if (time > 0){
expire(key,time);
}
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public boolean hset(String key,String item ,Object value){
try {
redisTemplate.opsForHash().put(key,item,value);
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public boolean hset(String key,String item ,Object value,long time){
try {
redisTemplate.opsForHash().put(key,item,value);
if (time>0){
expire(key,time);
}
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public void hdel(String key, Object... item){
redisTemplate.opsForHash().delete(key,item);
}
public boolean hHasKey(String key,String item){
return redisTemplate.opsForHash().hasKey(key,item);
}
public double hincr(String key,String item,double by){
return redisTemplate.opsForHash().increment(key,item,by);
}
public double hdecr(String key,String item,double by){
return redisTemplate.opsForHash().increment(key,item,-by);
}
public Set<Object> sGet(String key) {
try {
return redisTemplate.opsForSet().members(key);
}catch (Exception e){
e.printStackTrace();
return null;
}
}
public boolean sHasKey(String key,Object value){
try {
return redisTemplate.opsForSet().isMember(key,value);
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public long sSet(String key,Object... values){
try {
return redisTemplate.opsForSet().add(key,values);
}catch (Exception e){
e.printStackTrace();
return 0;
}
}
public long sSetAndTime(String key,long time,Object... values){
try {
Long count = redisTemplate.opsForSet().add(key,values);
if (time > 0){
expire(key, time);
}
return count;
}catch (Exception e){
e.printStackTrace();
return 0;
}
}
public long sGetSetSize(String key){
try {
return redisTemplate.opsForSet().size(key);
}catch (Exception e){
e.printStackTrace();
return 0;
}
}
public long setRemove(String key,Object... values){
try {
return redisTemplate.opsForSet().remove(key,values);
}catch (Exception e){
e.printStackTrace();
return 0;
}
}
public List<Object> lGet(String key, long start, long end){
try {
return redisTemplate.opsForList().range(key,start,end);
}catch (Exception e){
e.printStackTrace();
return null;
}
}
public List<Object> getList(String key, long start, long end){
try {
return redisTemplate.opsForList().range(key,start,end);
}catch (Exception e){
e.printStackTrace();
return null;
}
}
public long lGetListSize(String key){
try {
return redisTemplate.opsForList().size(key);
}catch (Exception e){
e.printStackTrace();
return 0;
}
}
public Object lGetIndex(String key,long index){
try {
return redisTemplate.opsForList().index(key,index);
}catch (Exception e){
e.printStackTrace();
return null;
}
}
public boolean lSet(String key,Object value){
try {
redisTemplate.opsForList().rightPush(key,value);
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public boolean lSet(String key,Object value,long time){
try {
redisTemplate.opsForList().rightPush(key,value);
if (time >0){
expire(key,time);
}
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public boolean lSet(String key,List<Object> value){
try {
redisTemplate.opsForList().rightPushAll(key,value);
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public boolean lSet(String key,List<Object> value,long time){
try {
redisTemplate.opsForList().rightPushAll(key,value);
if (time> 0){
expire(key,time);
}
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public boolean lUpdateIndex(String key,long index,Object value){
try {
redisTemplate.opsForList().set(key,index,value);
return true;
}catch (Exception e){
e.printStackTrace();
return false;
}
}
public long lRemove(String key,long count,Object value){
try {
Long remove = redisTemplate.opsForList().remove(key, count, value);
return remove;
}catch (Exception e){
e.printStackTrace();
return 0;
}
}
}
5.2工具类的使用
package com.lsu.redis;
import com.alibaba.fastjson.JSON;
import com.lsu.redis.pojo.User;
import com.lsu.redis.utils.RedisUtil;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.RedisTemplate;
@SpringBootTest
class RedisApplicationTests {
@Autowired
private RedisUtil redisUtil;
@Test
void testRedisUtil() {
User user = new User(1, "lsy");
String jsonUser = JSON.toJSONString(user);
redisUtil.set("name2", jsonUser);
System.out.println(redisUtil.get("name2"));
}
}