springboot配置redis过程详解

<dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.9.0</version>
    </dependency>
<dependency>
      <groupId>org.springframework.data</groupId>
      <artifactId>spring-data-redis</artifactId>
    </dependency>
<dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-configuration-processor</artifactId>
      <optional>true</optional>
    </dependency>

package com.zs.springboot.config.redis;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;
/**
 * @Company
 * @Author Zs
 * 将这个类作为spring的一个组件，添加@ConfigurationProperties(prefix = "spring.redis")注解，就会默认从application.properties
 * 文件中加载前缀为spring.redis的配置信息，配置文件中的配置字段与该类中的属性一致，通过setter方法来设值
 * @Date Create in 2019/8/30
 **/
@Component
@ConfigurationProperties(prefix = "spring.redis")
public class RedisProperties {
  private String ip;
  private Integer[] ports;
  private Integer maxActive;
  private Integer maxWait;
  private Integer expire;
  public String getIp() {
    return ip;
  }
  public void setIp(String ip) {
    this.ip = ip;
  }
  public Integer[] getPorts() {
    return ports;
  }
  public void setPorts(Integer[] ports) {
    this.ports = ports;
  }
  public Integer getMaxActive() {
    return maxActive;
  }
  public void setMaxActive(Integer maxActive) {
    this.maxActive = maxActive;
  }
  public Integer getMaxWait() {
    return maxWait;
  }
  public void setMaxWait(Integer maxWait) {
    this.maxWait = maxWait;
  }
  public Integer getExpire() {
    return expire;
  }
  public void setExpire(Integer expire) {
    this.expire = expire;
  }
}

package com.zs.springboot.config.redis;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.JedisCluster;

import java.util.HashSet;
import java.util.Set;

/**
 * @Company
 * @Author Zs
 * @Date Create in 2019/8/30
 **/
@Configuration
public class RedisConfiguration {
  private RedisProperties redisProperties;

  public RedisConfiguration(RedisProperties redisProperties) {
    this.redisProperties = redisProperties;
  }
  @Bean
  public JedisCluster jedisCluster() {
    Integer[] ports = redisProperties.getPorts();
    String host = redisProperties.getIp();
    Set<HostAndPort> hostAndPortSet = new HashSet<>();
    for (Integer port : ports) {
      hostAndPortSet.add(new HostAndPort(host, port));
    }
    return new JedisCluster(hostAndPortSet, redisProperties.getMaxActive(), redisProperties.getMaxWait());
  }
}

/**
 * @Company
 * @Author Zs
 * @Date Create in 2019/8/28
 **/
@Service
public class RedisService {
  @Autowired
  private JedisCluster jedisCluster;
  private static final String SET_SUCCESS = "OK";
  /**
   * 添加string数据，成功返回code：200，失败code：404
   * @param key
   * @param value
   * @return
   */
  public Map<String, Object> set(String key, Object value) {
    Map<String, Object> map = new HashMap<>();
    String result = jedisCluster.set(key, JsonUtil.toJsonString(value));
    if (SET_SUCCESS.equals(result)) {
      map.put(Status.SUCCESS.getCodeName(), Status.SUCCESS.getCode());
    } else {
      map.put(Status.FILED.getCodeName(), Status.FILED.getCode());
    }
    return map;
  }
  /**
   * 从redis根据key获取string数据
   * @param key
   * @return
   */
  public String get(String key) {
    String jsonString = jedisCluster.get(key);
    if (jsonString==null || jsonString.equals("")) {
      return null;
    }
    return jsonString;
  }
  /**
   * 删除string数据
   * @param key
   * @return
   */
  public Map<String, Object> del(String key) {
    Map<String, Object> map = new HashMap<>();
    Long del = jedisCluster.del(key);
    if (del>0) {
      map.put("code", 200);
    } else {
      map.put("code", 404);
    }
    return map;
  }
  /**
   * 设置失效时间
   * @param key
   * @param seconds
   * @return
   */
  public Long expire(String key,Integer seconds) {
    return jedisCluster.expire(key, seconds);
  }
}