Spring-data-redis--Simple use of Spring-data-redis

Spring-data-redis Serialization Policy

Spring-data-redis offers a variety of serializer strategies that are very handy for developers using Jedis. SDR offers 4 built-in serializer:

• Jdkserializationredisserializer: Using the JDK serialization means (serializable interface, Objectinputstrean,objectoutputstream), the data is stored in a byte stream, JDK serialization and deserialization of data
• Stringredisserializer: String encoding, data is stored as String
• Jacksonjsonredisserializer:json Format Storage
• Oxmserializer:xml Format Storage

Among them, Jdkserializationredisserializer and Stringredisserializer are the most basic serialization strategies, where "Jacksonjsonredisserializer" and " Oxmserializer "are all based on stirng storage, so they are more" advanced "serialization (eventually using string parsing and building Java objects).

The redistemplate needs to declare 4 kinds of serializer, the default is "Jdkserializationredisserializer":

1) Keyserializer: For normal k-v operation, Key takes a serialization strategy
2) serialization strategy taken by Valueserializer:value
3) Hashkeyserializer: In the hash data structure, Hash-key's serialization strategy
4) serialization strategy for Hashvalueserializer:hash-value

In any case, Key/hashkey is recommended to use Stringredisserializer. This Redis server uses the command to see the configuration as follows

1. Maven Configuration

<properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>< Spring.version>4.1.1.release</spring.version></properties><dependencies><dependency ><groupid>org.springframework</groupid><artifactid>spring-context-support</artifactid ><version>${spring.version}</version></dependency><dependency><groupId> Org.springframework.data</groupid><artifactid>spring-data-redis</artifactid><version> 1.4.1.release</version></dependency><dependency><groupid>redis.clients</groupid> <artifactId>jedis</artifactId><version>2.6.0</version><type>jar</type>< scope>compile</scope></dependency><dependency><groupid>junit</groupid>< artifactid>junit</artifactid><version>4.11</version><scope>test</scope></ Dependency></dependencies> 

2. Spring XML configuration file

Configuring the Jedis buffer pool

<!--Configure Jedis buffer pool--><bean id= "Jedispoolconfig" class= "Redis.clients.jedis.JedisPoolConfig" p:maxtotal= "32" p:maxidle= "6" p:maxwaitmillis= "15000" ></bean>

Configure ConnectionFactory

<!--configuration Jedis connection--><bean id= "ConnectionFactory" class= " Org.springframework.data.redis.connection.jedis.JedisConnectionFactory "p:poolconfig-ref=" Jedispoolconfig "P: Hostname= "127.0.0.1" p:port= "6379" p:usepool= "true" ></bean>

Create Redistemplate

<!--configuration redistemplate utilize Stringserializer--><bean id= "redistemplate" class= " Org.springframework.data.redis.core.RedisTemplate "p:connectionfactory-ref=" ConnectionFactory "><property Name= "Defaultserializer" ><bean class= "Org.springframework.data.redis.serializer.StringRedisSerializer"/ ></property><!--Use string is mostly key on the Redis side with the command to read otherwise the default serialization is not able to read--><property name= "Keyserializer" > <bean class= "Org.springframework.data.redis.serializer.StringRedisSerializer"/></property>< Property Name= "Hashkeyserializer" ><bean class= " Org.springframework.data.redis.serializer.StringRedisSerializer "/></PROPERTY></BEAN> 

3. Case

private static ApplicationContext context = Null;private static Redistemplate redistemplate=null;@ Org.junit.BeforeClasspublic static void Beforeclass () {if (context = = null) {System.out.println ("ctx inited ..."); context = new Classpathxmlapplicationcontext ("Spring-context.xml"), Redistemplate = Context.getbean ("RedisTemplate", Redistemplate.class);}}

1.String

@Testpublic void TestString () {valueoperations opsforvalue = Redistemplate.opsforvalue (); Opsforvalue.set ("String: Name "," Achuan "); Opsforvalue.set (" String:id "," 1 "); Object name = Opsforvalue.get (" String:name "); Assertnotnull (name) ; Assertequals ("Achuan", name.tostring ());}

2.List

When it comes to list Redis, which provides an operation similar to Message Queuing,

        @Testpublic void Testlist () {listoperations opsforlist = redistemplate.opsforlist (); String keyName = "ListKey"; Redistemplate.delete (KeyName); Opsforlist.leftpush (KeyName, "Zhangsan"); o Psforlist.leftpush (KeyName, "Lisi"); Opsforlist.leftpushall (KeyName, "Wangwu", "Zhaoliu", "Qianqi"); Long size = opsforlist.size (keyName); SYSTEM.OUT.PRINTLN ("Size:" + size); for (long i = 0; I < Size i++) {Object value = Opsforlist.index (keyname,i); System.out.println ("I:" +i+ ", Value:" +value.tostring ());} Object Leftpop = Opsforlist.leftpop (keyName); System.out.println ("After pop size:" +opsforlist.size (KeyName));}

3 hashes (sets see for yourself.) )

Get here today, Redis has a lot of things, like cache transcation and so on. Look at the directory structure

Spring-data-redis--Simple use of Spring-data-redis