添加jedis和fastjson依赖
配置redis
package cn.tedu.miaosha.redis; public abstract class BasePrefix implements KeyPrefix { private int expireSeconds; private String prefix; public BasePrefix(String prefix) {//0代表永不过期 this(0, prefix); } public BasePrefix(int expireSeconds,String prefix){ this.expireSeconds = expireSeconds; this.prefix = prefix; } @Override public int expireSeconds() {//默认0代表永不过期 // TODO Auto-generated method stub return expireSeconds; } @Override public String getPrefix() { String className = getClass().getSimpleName(); // TODO Auto-generated method stub return className+":"+ prefix; } }
package cn.tedu.miaosha.redis; public interface KeyPrefix { public int expireSeconds(); public String getPrefix(); }
package cn.tedu.miaosha.redis; public class OrderKey extends BasePrefix { public OrderKey(int expireSeconds, String prefix) { super(expireSeconds, prefix); // TODO Auto-generated constructor stub } }
package cn.tedu.miaosha.redis; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; @Component @ConfigurationProperties(prefix="redis") public class RedisConfig { private String host; private int port; private int timeout;//秒 private String password; private int poolMaxTotal; private int poolMaxIdle; private int poolMaxWait;//秒 public String getHost() { return host; } public void setHost(String host) { this.host = host; } public int getPort() { return port; } public void setPort(int port) { this.port = port; } public int getTimeout() { return timeout; } public void setTimeout(int timeout) { this.timeout = timeout; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } public int getPoolMaxTotal() { return poolMaxTotal; } public void setPoolMaxTotal(int poolMaxTotal) { this.poolMaxTotal = poolMaxTotal; } public int getPoolMaxIdle() { return poolMaxIdle; } public void setPoolMaxIdle(int poolMaxIdle) { this.poolMaxIdle = poolMaxIdle; } public int getPoolMaxWait() { return poolMaxWait; } public void setPoolMaxWait(int poolMaxWait) { this.poolMaxWait = poolMaxWait; } }
package cn.tedu.miaosha.redis; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.Bean; import org.springframework.stereotype.Service; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig; @Service public class RedisPoolFactory { @Autowired RedisConfig redisConfig; @Bean public JedisPool JedisPoolFactory() { JedisPoolConfig poolConfig = new JedisPoolConfig(); poolConfig.setMaxIdle(redisConfig.getPoolMaxIdle()); poolConfig.setMaxTotal(redisConfig.getPoolMaxTotal()); poolConfig.setMaxWaitMillis(redisConfig.getPoolMaxWait() * 1000); JedisPool jp = new JedisPool(poolConfig, redisConfig.getHost(), redisConfig.getPort(), redisConfig.getTimeout()*1000, redisConfig.getPassword(), 0); return jp; } }
package cn.tedu.miaosha.redis; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.alibaba.fastjson.JSON; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; @Service public class RedisService { @Autowired JedisPool jedisPool; /** * 获取当个对象 * */ public <T> T get(KeyPrefix prefix, String key, Class<T> clazz) { Jedis jedis = null; try { jedis = jedisPool.getResource(); //生成真正的key String realKey = prefix.getPrefix() + key; String str = jedis.get(realKey); T t = stringToBean(str, clazz); return t; }finally { returnToPool(jedis); } } /** * 设置对象 * */ public <T> boolean set(KeyPrefix prefix, String key, T value) { Jedis jedis = null; try { jedis = jedisPool.getResource(); String str = beanToString(value); if(str == null || str.length() <= 0) { return false; } //生成真正的key String realKey = prefix.getPrefix() + key; int seconds = prefix.expireSeconds(); if(seconds <= 0) { jedis.set(realKey, str); }else { jedis.setex(realKey, seconds, str); } return true; }finally { returnToPool(jedis); } } /** * 判断key是否存在 * */ public <T> boolean exists(KeyPrefix prefix, String key) { Jedis jedis = null; try { jedis = jedisPool.getResource(); //生成真正的key String realKey = prefix.getPrefix() + key; return jedis.exists(realKey); }finally { returnToPool(jedis); } } /** * 增加值 * */ public <T> Long incr(KeyPrefix prefix, String key) { Jedis jedis = null; try { jedis = jedisPool.getResource(); //生成真正的key String realKey = prefix.getPrefix() + key; return jedis.incr(realKey); }finally { returnToPool(jedis); } } /** * 减少值 * */ public <T> Long decr(KeyPrefix prefix, String key) { Jedis jedis = null; try { jedis = jedisPool.getResource(); //生成真正的key String realKey = prefix.getPrefix() + key; return jedis.decr(realKey); }finally { returnToPool(jedis); } } private <T> String beanToString(T value) { if(value == null) { return null; } Class<?> clazz = value.getClass(); if(clazz == int.class || clazz == Integer.class) { return ""+value; }else if(clazz == String.class) { return (String)value; }else if(clazz == long.class || clazz == Long.class) { return ""+value; }else { return JSON.toJSONString(value); } } @SuppressWarnings("unchecked") private <T> T stringToBean(String str, Class<T> clazz) { if(str == null || str.length() <= 0 || clazz == null) { return null; } if(clazz == int.class || clazz == Integer.class) { return (T)Integer.valueOf(str); }else if(clazz == String.class) { return (T)str; }else if(clazz == long.class || clazz == Long.class) { return (T)Long.valueOf(str); }else { return JSON.toJavaObject(JSON.parseObject(str), clazz); } } private void returnToPool(Jedis jedis) { if(jedis != null) { jedis.close(); } } }
package cn.tedu.miaosha.redis; public class UserKey extends BasePrefix{ private UserKey( String prefix) { super(prefix); } public static UserKey getById = new UserKey("id"); public static UserKey getByName = new UserKey("name"); }