1.1下载地址Releases · microsoftarchive/redis · GitHubhttps://github.com/MicrosoftArchive/redis/releases
1.2 解压
下载完后解压到指定目录
1.3 启动
在当前地址栏输入cmd后，执行redis的命令：
redis-server.exe redis.windows.conf
1.4 pom.xml
<!--springboot中的redis依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
1.5 application.yml配置
spring:
redis:
host: localhost # Redis服务器地址
database: 0 # Redis数据库索引（默认为0）
port: 6379 # Redis服务器连接端口
password: # Redis服务器连接密码（默认为空）
2.Redis 代替默认的springcache
2.1.redisConfig
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
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.RedisSerializationContext;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.util.Arrays;
@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
template.setConnectionFactory(redisConnectionFactory);
Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper mapper = new ObjectMapper();
mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
mapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
serializer.setObjectMapper(mapper);
template.setValueSerializer(serializer);
//使用StringRedisSerializer来序列化和反序列化redis的key值
template.setKeySerializer(new StringRedisSerializer());
template.afterPropertiesSet();
return template;
}
@Bean
public CacheManager cacheManager(RedisConnectionFactory factory) {
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer serializer = new Jackson2JsonRedisSerializer(Object.class);
ObjectMapper objectMapper = new ObjectMapper();
objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
serializer.setObjectMapper(objectMapper);
// 配置序列化
RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(serializer));
RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
.cacheDefaults(config)
.build();
return cacheManager;
}
@Bean
public KeyGenerator keyGenerator() {
return (target, method, params)->{
return method.getName()+Arrays.asList(params);
};
}
}
2.2 使用注解
import com.wx.helloworld.commom.CommonResult;
import com.wx.helloworld.dao.UserDao;
import com.wx.helloworld.model.User;
import com.wx.helloworld.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.*;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
@CacheConfig(cacheNames = "user")
public class UserServiceImpl implements UserService {
@Autowired
private UserDao userDao;
@CachePut(keyGenerator = "keyGenerator")
@Override
public CommonResult getUsers() {
List<User> users =userDao.getUsers();
return CommonResult.success(users);
}
@Caching(
put = @CachePut(key = "#result.data.id"),
evict = @CacheEvict(key="'getUsers[]'")
)
@Override
public CommonResult addUser(User user) {
user.setId(null);
try{
userDao.addUser(user);
}catch (Exception e){
e.printStackTrace();
return CommonResult.failed(e.getMessage());
}
return CommonResult.success(user);
}
@Cacheable(key = "#id")
@Override
public CommonResult getUserById(Integer id) {
User user=userDao.getUserById(id);
return CommonResult.success(user);
}
}
3.redisTemplate使用与封装
3.1.RedisSerive
public interface RedisService {
/**
* 指定缓存失效时间
* @param key 键
* @param time 时间(秒)
* @return
*/
boolean expire(String key, long time);
/**
* 根据key 获取过期时间
* @param key 键 不能为null
* @return 时间(秒) 返回0代表为永久有效
*/
long getExpire(String key);
/**
* 判断key是否存在
* @param key 键
* @return true 存在 false不存在
*/
boolean hasKey(String key);
/**
* 删除缓存
* @param key 可以传一个值 或多个
*/
void del(String... key);
/**
* 普通缓存获取
* @param key 键
* @return 值
*/
Object get(String key);
/**
* 普通缓存放入
* @param key 键
* @param value 值
* @return true成功 false失败
*/
boolean set(String key, Object value);
/**
* 普通缓存放入并设置时间
* @param key 键
* @param value 值
* @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期
* @return true成功 false 失败
*/
boolean set(String key, Object value, long time);
}
3.2.封装RedisSeriveImpl
import com.wx.helloworld.service.RedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.CollectionUtils;
import java.util.concurrent.TimeUnit;
/**
* redis操作Service的实现类
* Created by macro on 2018/8/7.
*/
@Service
public class RedisServiceImpl implements RedisService {
@Autowired
private RedisTemplate redisTemplate;
/**
* 指定缓存失效时间
* @param key 键
* @param time 时间(秒)
* @return
*/
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;
}
}
/**
* 根据key 获取过期时间
* @param key 键 不能为null
* @return 时间(秒) 返回0代表为永久有效
*/
public long getExpire(String key){
return redisTemplate.getExpire(key,TimeUnit.SECONDS);
}
/**
* 判断key是否存在
* @param key 键
* @return true 存在 false不存在
*/
public boolean hasKey(String key){
try {
return redisTemplate.hasKey(key);
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 删除缓存
* @param key 可以传一个值 或多个
*/
@SuppressWarnings("unchecked")
public void del(String ... key){
if(key!=null&&key.length>0){
if(key.length==1){
redisTemplate.delete(key[0]);
}else{
redisTemplate.delete(CollectionUtils.arrayToList(key));
}
}
}
//============================String=============================
/**
* 普通缓存获取
* @param key 键
* @return 值
*/
public Object get(String key){
return key==null?null:redisTemplate.opsForValue().get(key);
}
/**
* 普通缓存放入
* @param key 键
* @param value 值
* @return true成功 false失败
*/
public boolean set(String key,Object value) {
try {
redisTemplate.opsForValue().set(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 普通缓存放入并设置时间
* @param key 键
* @param value 值
* @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期
* @return true成功 false 失败
*/
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;
}
}
}