spring data redis 序列化有jdk 、jackson、string 等几种类型，自带的jackson不熟悉怎么使用，因而用string类型序列化，把对象先用工具类转成string，代码以下：java
application.xml中配置redis
<bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" > <property name="hostName" value="${redis.hostName}"></property> <property name="port" value="${redis.port}"></property> <property name="password" value="${redis.password}"></property> <property name="timeout" value="${redis.timeout}" /> <property name="usePool" value="true" /> <property name="poolConfig" ref="jedisPoolConfig" /> </bean> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxTotal" value="${redis.maxTotal}"></property> <property name="maxIdle" value="${redis.maxIdle}"></property> <property name="maxWaitMillis" value="${redis.maxWaitMillis}"></property> <property name="testOnBorrow" value="${redis.testOnBorrow}"></property> </bean> <bean id="stringRedisSerializer" class="org.springframework.data.redis.serializer.StringRedisSerializer" /> <!-- <bean id="jacksonJsonRedisSerializer" class="org.springframework.data.redis.serializer.JacksonJsonRedisSerializer" > <constructor-arg type="java.lang.Class" value="java.lang.Object"/> </bean> --> <bean id="jacksonJsonRedisSerializer" class="org.springframework.data.redis.serializer.JacksonJsonRedisSerializer" > <constructor-arg type="java.lang.Class" value="java.lang.Object"/> </bean> <bean id="jdkSerializationRedisSerializer" class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"/> <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate"> <property name="connectionFactory" ref="jedisConnectionFactory"></property> <property name="keySerializer" ref="stringRedisSerializer"/> <property name="valueSerializer" ref="stringRedisSerializer" /> <property name="hashKeySerializer" ref="stringRedisSerializer" /> <property name="hashValueSerializer" ref="stringRedisSerializer"/> </bean>
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:jdbc.properties</value>
<value>classpath:redis.properties</value>
</list>
</property>
</bean>
redis.properties
#redis链接池配置
redis.maxTotal=300
redis.maxIdle=20
#读取超时
redis.maxWaitMillis=5000
redis.testOnBorrow=true
#redis链接配置
redis.hostName=192.168.100.75
redis.port=6379
redis.password=desc@1997
#链接超时
redis.timeout=5000
RedisBaseDaospring
@Component public class RedisBaseDao { /** * 日志记录 */ private static Logger logger = Logger.getLogger(RedisBaseDao.class); @Autowired protected RedisTemplate<String, String> redisTemplate; public RedisTemplate<String, String> getRedisTemplate() { return redisTemplate; } /** * 缓存value操做 * @param k * @param v * @param time * @return */ public boolean cache(String k, Object v, long time) { String key = k; try { long s=System.currentTimeMillis(); ValueOperations<String, String> valueOps = redisTemplate.opsForValue(); valueOps.set(key, Json2Util.obj2String(v)); if (time > 0) redisTemplate.expire(key, time, TimeUnit.SECONDS); long e=System.currentTimeMillis(); if(e-s>2000){ logger.error("key:"+key+" redis time use"+(e-s)); } else if(logger.isDebugEnabled()){ logger.debug("key:"+key+" redis time use"+(e-s)); } return true; } catch (Throwable t) { logger.error("缓存[" + key + "]失败, value[" + v + "]", t); } return false; } /** * 添加list * @Autor : xiongjinpeng jpx_011@163.com * @Date : 2017年7月7日 下午2:37:31 * @param k * @param v * @param time * @return */ // public boolean cacheList(String k, Collection v, long time) { // String key = k; // try { // long s=System.currentTimeMillis(); // redisTemplate.delete(key); // ListOperations<String, Object> list=redisTemplate.opsForList(); // list.leftPushAll(key, v); // if (time > 0) redisTemplate.expire(key, time, TimeUnit.SECONDS); // long e=System.currentTimeMillis(); // if(e-s>2000){ // logger.error("redis time use "+(e-s)); // } // return true; // } catch (Throwable t) { // logger.error("缓存[" + key + "]失败, value[" + v + "]", t); // } // return false; // } // public boolean cacheList(String k, Collection v) { // return cacheList(k, v, -1); // } // public <T> List<T> getList(String k,int start,int end) { // try { // long s=System.currentTimeMillis(); // ListOperations<String, Object> valueOps=redisTemplate.opsForList(); // List<T> o=(List<T>) valueOps.range(k, start, end); // long e=System.currentTimeMillis(); // if(e-s>2000){ // logger.error("redis time use "+(e-s)); // } // return o; // } catch (Throwable t) { // logger.error("获取缓存失败key[" + k + ", error[" + t + "]"); // } // return null; // } // public <T> List<T> getList(String k){ // return getList(k, 0, -1); // } /** * 缓存value操做 * @param k * @param v * @return */ public boolean cache(String k, Object v) { return cache(k, v, RedisUtil.keytimeout); } public boolean containsKey(String key) { try { return redisTemplate.hasKey(key); } catch (Throwable t) { logger.error("判断缓存存在失败key[" + key + ", error[" + t + "]"); } return false; } /** * 获取缓存 * @param k * @return */ // public Object get(String k) { // return get(k,RedisUtil.keytimeout); // } // // public Object get(String k,long time) { // try { // long s=System.currentTimeMillis(); // ValueOperations<String, String> valueOps = redisTemplate.opsForValue(); // Object o=valueOps.get(k); // if (time > 0) redisTemplate.expire(k, time, TimeUnit.SECONDS); // long e=System.currentTimeMillis(); // if(e-s>2000){ // logger.error("key:"+k+" redis time use "+(e-s)); // } else if(logger.isDebugEnabled()){ // logger.debug("key:"+k+" redis time use"+(e-s)); // } // return o; // } catch (Throwable t) { // logger.error("获取缓存失败key[" + k + ", error[" + t + "]"); // } // return null; // } public <T> T get(String k,Class<T> clazz) { return get(k,RedisUtil.keytimeout, clazz); } public <T> T get(String k,long time,Class<T> clazz) { try { long s=System.currentTimeMillis(); ValueOperations<String, String> valueOps = redisTemplate.opsForValue(); String o=valueOps.get(k); if (time > 0) redisTemplate.expire(k, time, TimeUnit.SECONDS); long e=System.currentTimeMillis(); if(e-s>2000){ logger.error("key:"+k+" redis time use "+(e-s)); } else if(logger.isDebugEnabled()){ logger.debug("key:"+k+" redis time use"+(e-s)); } if(o!=null){ return Json2Util.getObjectMapper().readValue(o, clazz); } } catch (Throwable t) { logger.error("获取缓存失败key[" + k + ", error[" + t + "]"); } return null; } public <T> List<T> getList(String k,long time,Class<T> clazz) { try { long s=System.currentTimeMillis(); ValueOperations<String, String> valueOps = redisTemplate.opsForValue(); String o=valueOps.get(k); if (time > 0) redisTemplate.expire(k, time, TimeUnit.SECONDS); long e=System.currentTimeMillis(); if(e-s>2000){ logger.error("key:"+k+" redis time use "+(e-s)); } else if(logger.isDebugEnabled()){ logger.debug("key:"+k+" redis time use"+(e-s)); } if(o!=null){ JavaType javaType = Json2Util.getObjectMapper().getTypeFactory().constructParametricType(List.class, clazz); List<T> list = Json2Util.getObjectMapper().readValue(o, javaType); return list; } } catch (Throwable t) { logger.error("获取缓存失败key[" + k + ", error[" + t + "]"); } return null; } public <T> List<T> getList(String k,Class<T> clazz) { return getList(k, RedisUtil.keytimeout, clazz); } /** * 移除缓存 * @param key * @return */ public boolean remove(String key) { try { redisTemplate.delete(key); return true; } catch (Throwable t) { logger.error("获取缓存失败key[" + key + ", error[" + t + "]"); } return false; } /** * 模糊匹配，不建议使用，影响性能，只在一些数据重置的时候使用 * @Date : 2017年7月6日 下午4:13:45 * @param pattern * @return */ @Deprecated public Set<String> keys(String pattern) { try { long s=System.currentTimeMillis(); Set<String> keys=redisTemplate.keys(pattern); long e=System.currentTimeMillis(); if(e-s>2000){ logger.error("redis time use "+(e-s)); } return keys; } catch (Throwable t) { logger.error("获取缓存失败pattern[" + pattern + ", error[" + t + "]"); } return null; } public String flushDB() { return redisTemplate.execute(new RedisCallback<String>() { public String doInRedis(RedisConnection connection) throws DataAccessException { connection.flushDb(); return "ok"; } }); } public long dbSize() { return redisTemplate.execute(new RedisCallback<Long>() { public Long doInRedis(RedisConnection connection) throws DataAccessException { return connection.dbSize(); } }); } }
RedisUtilsql
public class RedisUtil { //单例 private RedisUtil(){} private static RedisBaseDao dao=null; static { if(dao==null){ synchronized (RedisUtil.class) { if(dao==null){ dao=ContextUtil.getBean(RedisBaseDao.class); try { String keytimeoutstr=ContextUtil.getInitConfig("redis.keytimeout"); String unit=keytimeoutstr.substring(keytimeoutstr.length()-1); Integer num=Integer.parseInt(keytimeoutstr.substring(0,keytimeoutstr.length()-1)); if(unit.equals("d")){ keytimeout=num*24*60*60; } else if(unit.equals("h")){ keytimeout=num*60*60; } else if(unit.equals("m")){ keytimeout=num*60; } else if(unit.equals("s")){ keytimeout=num; } else { throw new RuntimeException("redis key timeout初始化失败"); } } catch (Exception e) { throw new RuntimeException("redis key timeout初始化失败"); } } } } } public static RedisBaseDao getRedisDao() { return dao; } public static long keytimeout=30*24*60*60;//秒 }
使用类，json
CommonCache缓存
public class CommonCache { /** * 查询缓存 * @Date : 2017年7月5日 下午3:15:47 * @param userId * @return */ public static FileCache queryFileCache(Long fid){ if(fid==null){ return null; } String key=CachePrefix.filecache_prefix+fid; FileCache u=RedisUtil.getRedisDao().get(key,FileCache.class); if(u==null){ return refreshFileCache(fid); } else { return u; } } /** * 刷新缓存 * @Date : 2017年7月5日 下午3:15:39 * @param userId */ public static FileCache refreshFileCache(Long fid){ if(fid==null){ return null; } IBaseDao dao=ContextUtil.getBean(IBaseDao.class); String key=CachePrefix.filecache_prefix+fid; StringBuffer sql = new StringBuffer(); sql.append("select f.f_isdeleted,f.f_id,f.f_name,f.f_extension,f.f_type,f.f_size,f.f_create_time,f.f_oss_bucket from t_file f where f.f_id=?"); FileCache userExt = dao.queryObjectBySql(FileCache.class, sql.toString(), new Object[]{fid}); RedisUtil.getRedisDao().cache(key, userExt); return userExt; } }
json使用jackson我的感受是最快的app
Json2Util工具
import com.fasterxml.jackson.annotation.JsonInclude.Include; import com.fasterxml.jackson.core.JsonParser.Feature; import com.fasterxml.jackson.databind.DeserializationFeature; import com.fasterxml.jackson.databind.ObjectMapper; /** * @Description : * @Autor : xiongjinpeng jpx_011@163.com * @Date : 2016年1月26日 上午10:11:41 * @version : */ public class Json2Util { private static ObjectMapper objectMapper=null; static { if(objectMapper==null){ synchronized (Json2Util.class) { if(objectMapper==null){ objectMapper=new ObjectMapper(); objectMapper.configure(Feature.ALLOW_UNQUOTED_CONTROL_CHARS, true); objectMapper.setSerializationInclusion(Include.NON_NULL); objectMapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES); } } } } public static ObjectMapper getObjectMapper() { return objectMapper; } public static String obj2String(Object obj){ String s = ""; try { s = getObjectMapper().writeValueAsString(obj); } catch (Exception e) { e.printStackTrace(); } return s; } private Json2Util(){} public static void main(String[] args) throws Exception{ } }