Spring + Jedis Integrated Redis

Source: Internet
Author: User
Tags object object redis cluster

These days are fine, the previous learning of the Redis code to tidy up, nonsense not much to say, on the steps.

1, Pom.xml the introduction of resources;

        <dependency>            <groupId>org.springframework.data</groupId>            <artifactId> spring-data-redis</artifactid>            <version>1.7.0.RELEASE</version>        </dependency>        <dependency>            <groupId>redis.clients</groupId>            <artifactid>jedis</ artifactid>            <version>2.8.0</version>        </dependency>

2, configure Redis configuration file, here only configure a single-point database, the following will introduce the configuration of Redis cluster, here is not much to say;

Spring-redis.xml configuration:

    <!--read profile information--<context:property-placeholder ignore-unresolvable= "true" location= "Classpath:*.propertie        S "/> <!--Redis configuration--<bean id=" Jedispoolconfig "class=" Redis.clients.jedis.JedisPoolConfig ">  <property name= "Maxtotal" value= "${redis.maxactive}"/> <property name= "Maxidle" value= "${redis.maxIdle}" /> <property name= "Maxwaitmillis" value= "${redis.maxwaitmillis}"/> <property name= "TestOnBorro W "value=" true "/> </bean> <!--redis Single-node database connection configuration-<bean id=" jedisconnectionfactory "class=" or G.springframework.data.redis.connection.jedis.jedisconnectionfactory "> <property name=" hostName "value=" ${ Redis.host} "/> <property name=" port "value=" ${redis.port} "/> <property name=" password "value=" ${redis.password} "/> <property name=" poolconfig "ref=" Jedispoolconfig "/> </bean> <!--red Istemplate configuration, Redistemplate isMore operations on Jedis for Redis operations, encapsulation makes operation easier-<bean id= "Redistemplate" class= " Org.springframework.data.redis.core.StringRedisTemplate "> <property name=" connectionfactory "ref=" Jedisconnectionfactory "/> </bean>

Redis.properties File configuration:

#redis的服务器地址redis. host= here Write your Ip#redis service port redis.port=6379# password redis.password= here write your password # link database redis.default.db=0# The client time-out unit is milliseconds redis.timeout=100000# maximum number of connections redis.maxactive=300# maximum idle redis.maxidle=100# maximum connection wait time Redis.maxwaitmillis =1000

3, then, the specific implementation of the Code;

Serialization and deserialization tool classes:

 Public classSerializerutil {/*** Serialization *@paramObject *@return     */     Public Static byte[] Serializeobj (Object object) {ObjectOutputStream Oos=NULL; Bytearrayoutputstream BAOs=NULL; Try{BAOs=NewBytearrayoutputstream (); Oos=NewObjectOutputStream (BAOs);            Oos.writeobject (object); byte[] bytes =Baos.tobytearray (); returnbytes; } Catch(Exception e) {Throw NewRuntimeException ("Serialization failed!"), E); }    }    /*** Deserialization *@parambytes *@return     */     Public StaticObject Deserializeobj (byte[] bytes) {        if(bytes = =NULL){            return NULL; } Bytearrayinputstream Bais=NULL; Try{Bais=Newbytearrayinputstream (bytes); ObjectInputStream Ois=NewObjectInputStream (Bais); returnOis.readobject (); } Catch(Exception e) {Throw NewRuntimeException ("Deserialization failed!"), E); }    }}

Operation implementation class, where only 3 implementation classes are provided, others can be implemented according to their own needs:

@Component Public classRediscache {@ResourcePrivateRedistemplate<string, string>redistemplate; /*** Add Cached Data *@paramKey *@paramobj *@param<T> *@return     * @throwsException*/     Public<T>BooleanPutcache (String key, T obj)throwsException {Final byte[] Bkey =key.getbytes (); Final byte[] Bvalue =serializerutil.serializeobj (obj); Booleanresult = Redistemplate.execute (NewRediscallback<boolean>() {@Override PublicBoolean Doinredis (redisconnection connection)throwsDataAccessException {returnconnection.setnx (Bkey, bvalue);        }        }); returnresult; }    /*** Add cached data to set cache expiration time *@paramKey *@paramobj *@paramExpiretime *@param<T> *@throwsException*/     Public<T>voidPutcachewithexpiretime (String key, T obj,Final LongExpiretime)throwsException {Final byte[] Bkey =key.getbytes (); Final byte[] Bvalue =serializerutil.serializeobj (obj); Redistemplate.execute (NewRediscallback<boolean>() {@Override PublicBoolean Doinredis (redisconnection connection)throwsDataAccessException {Connection.setex (Bkey, Expiretime, bvalue); return true;    }        }); }    /*** Cache data based on key *@paramKey *@param<T> *@return     * @throwsException*/     Public<T> T GetCache (FinalString key)throwsException {byte[] result = Redistemplate.execute (Newrediscallback<byte[]>() {@Override Public byte[] Doinredis (redisconnection connection)throwsDataAccessException {returnConnection.get (Key.getbytes ());        }        }); if(Result = =NULL) {            return NULL; }        return(T) serializerutil.deserializeobj (result); }}

4, test code;

@Test Public voidTest7 ()throwsexception{List<String> list =NewArraylist<string>(); List.add ("Test List"); List.add ("Test List2"); Map<String,Object> map =NewHashmap<string, object>(); Map.put ("test*", "Test data"); Map.put ("Test Data", "what"); Map.put ("Listtest", list); Rediscache.putcache ("TestMap", map); Map<String,Object> Mapresult = Rediscache.getcache ("TestMap");    System.out.print (Mapresult.tostring ()); }


5, OK, all normal. PS: Interested students can go to see the Redis source code, very good!

Spring + Jedis Integrated Redis

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