Spring Boot (9) Redis (Connect, delete, change, cluster, use with session)

1. Establish a connection

1.1 Pom.xml

<!--Redis-related support-        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-redis</artifactId>            <version>1.3.2.release</version >        </dependency>

1.2 Application.properties

#Servlet端口号server. port=8088# Redis (redisproperties) # Redis Database index (default is 0) spring.redis.database=0# Redis server address spring.redis.host=192.168.88.134# Redis Server connection Port spring.redis.port=6379# Redis Server connection password (default is empty) spring.redis.password=123456# connection pool Maximum number of connections (using negative values means there is no limit) spring.redis.pool.max-active=8# Connection pool Maximum blocking wait time (with negative values for no limit) spring.redis.pool.max-wait=-1# maximum idle connections in the connection pool spring.redis.pool.max-idle=8# Minimum idle connection in connection pool spring.redis.pool.min-idle=0# connection time-out (ms) spring.redis.timeout=0

1.3 Stringredistemplatetest.java

Package Com.guilf.servlet;import Org.junit.test;import Org.junit.runner.runwith;import org.slf4j.Logger;import Org.slf4j.loggerfactory;import Org.springframework.beans.factory.annotation.autowired;import Org.springframework.boot.test.context.springboottest;import Org.springframework.data.redis.core.stringredistemplate;import org.springframework.test.context.junit4.springjunit4classrunner;/** * Created by Hong on 2017/5/2. */@RunWith (Springjunit4classrunner.class) @SpringBootTestpublic class Stringredistemplatetest {    private final Logger Logger = Loggerfactory.getlogger (This.getclass ());    @Autowired    private stringredistemplate stringredistemplate;    @Test    public  void Test () {        stringredistemplate.opsforvalue (). Set ("AAA", "aaa111");        Logger.info (Stringredistemplate.opsforvalue (). Get ("AAA"));}    }

1.4 Running the test

2, to the operation of the Redis to change the additions and deletions

Package Com.hong.service.impl;import Com.hong.domain.city;import Com.hong.mapper.citymapper;import Com.hong.service.cityservice;import Org.slf4j.logger;import Org.slf4j.loggerfactory;import Org.springframework.beans.factory.annotation.autowired;import org.springframework.data.redis.core.RedisTemplate ; Import Org.springframework.data.redis.core.valueoperations;import Org.springframework.stereotype.service;import java.util.concurrent.timeunit;/** * */@Servicepublic class Cityserviceimpl implements Cityservice {private final Logg    ER logger = loggerfactory.getlogger (This.getclass ());    @Autowired private Citymapper Citymapper;    @Autowired private Redistemplate redistemplate;    Private final String Key_prefix = "City_"; /** * Get City Logic: * If the cache exists, get city information from the cache * If the cache does not exist, obtain city information from the DB, and then insert the cache */@Override public Cities findonecity (Integer ID)        {valueoperations<string, city> valueoperations = Redistemplate.opsforvalue (); The cache has a String key= Key_prefix + ID;        Boolean haskey = Redistemplate.haskey (key);            if (Haskey) {City city = Valueoperations.get (key);            Logger.info ("cityserviceimpl.findonecity (): Get City >> from cache" + city.tostring ());        return city;        }//Get data from MySQL database city city = Citymapper.selectbyprimarykey (ID);        into the cache.        Valueoperations.set (Key, City, ten, timeunit.seconds);        Logger.info ("Cityserviceimpl.findonecity (): City added Cache >>" + city.tostring ());    return city;    } @Override public int savecity {return citymapper.insert (city); } @Override public int modifycity (city city) {//Update data in db int count = Citymapper.updatebyprimarykey (CI        TY);        If it exists in the cache, remove it.        String key = Key_prefix + City.getid ();        Boolean haskey = Redistemplate.haskey (key);            if (Haskey) {redistemplate.delete (key); Logger.info ("cityserviceimpl.modifycity removed City from cache"+ city.tostring ());    } return count; } @Override public int deletecity (Integer ID) {//delete data in db int count = Citymapper.deletebyprimarykey (i        D);        If it exists in the cache, remove it.        String key = Key_prefix + ID;        Boolean haskey = Redistemplate.haskey (key);            if (Haskey) {redistemplate.delete (key);        Logger.info ("cityserviceimpl.modifycity removed the city ID from the cache:" + ID);    } return count; }}

3. If the cluster

Pom.xml

<!--Redis-related support, which by default includes Jedis dependencies--        <dependency>            <groupid>org.springframework.boot</ groupid>            <artifactId>spring-boot-starter-redis</artifactId>            <version>1.3.2. Release</version>        </dependency>

Application.properties

#redis clusterspring.redis.cluster.nodes= 127.0.0.1:7000,127.0.0.1:7001,127.0.0.1:7002spring.redis.cluster.commandtimeout=5000

　　

Redisproperties.java

Package Com.guilf.config;import Org.springframework.boot.context.properties.configurationproperties;import org.springframework.stereotype.component;/** * *  /@Component @configurationproperties (prefix = " Spring.redis.cluster ") public class Redisproperties {    private String nodes;    Private Integer   CommandTimeout;    Public String Getnodes () {        return nodes;    }    public void Setnodes (String nodes) {        this.nodes = nodes;    }    Public Integer getcommandtimeout () {        return commandtimeout;    }    public void Setcommandtimeout (Integer commandtimeout) {        this.commandtimeout = CommandTimeout;    }}

Jedisclusterconfig.java

Package Com.guilf.config;import Org.springframework.beans.factory.annotation.autowired;import Org.springframework.boot.autoconfigure.condition.conditionalonclass;import Org.springframework.boot.context.properties.enableconfigurationproperties;import Org.springframework.context.annotation.bean;import Org.springframework.context.annotation.configuration;import Org.springframework.core.env.mappropertysource;import Org.springframework.data.redis.connection.redisclusterconfiguration;import Org.springframework.data.redis.connection.jedis.jedisconnectionfactory;import Org.springframework.data.redis.core.redistemplate;import Org.springframework.data.redis.serializer.stringredisserializer;import Redis.clients.jedis.hostandport;import Redis.clients.jedis.jediscluster;import Java.util.hashmap;import Java.util.hashset;import Java.util.Map;import java.util.set;/** * */@Configuration @conditionalonclass ({jediscluster.class}) @EnableConfigurationProperties ( Redisproperties.class) public class JedisclusteRconfig {@Autowired private redisproperties redisproperties;        @Bean public Jediscluster jedisclusterfactory () {string[] Serverarray = Redisproperties.getnodes (). Split (",");        set
 Testrediscluster.java 
 
Package Com.guilf;import Org.junit.assert;import Org.junit.test;import org.junit.runner.runwith;import Org.slf4j.logger;import Org.slf4j.loggerfactory;import org.springframework.beans.factory.annotation.Autowired; Import Org.springframework.boot.test.context.springboottest;import Org.springframework.data.redis.core.redistemplate;import Org.springframework.test.context.junit4.springjunit4classrunner;import Org.springframework.test.context.web.webappconfiguration;import redis.clients.jedis.jediscluster;/** * */@RunWith (Springjunit4classrunner.class) @SpringBootTest (Classes ={application.class}) @WebAppConfigurationpublic class    Testrediscluster {private final Logger Logger = Loggerfactory.getlogger (This.getclass ());    @Autowired private Jediscluster Jediscluster; /** * Note: When we use redistemplate, when we do not specify &LT;K, v> specific values, * spring defaults to Defaultserializer = new Jdkserializationredisseri     Alizer (); To serialize the Key,value, * so this time Redis can come out a bunch of \xac\xed\x00\x05t\x00\tb this stuff;     ** So we can choose two methods of processing: * 1. Use redistemplate<string,string> to specify directly.     * 2.    * */@Autowired private redistemplate<string,string> redistemplate;        @Test public void Test () {Jediscluster.set ("Test_jedis_cluster", "123456");        Assert.assertequals ("123456", Jediscluster.get ("Test_jedis_cluster"));        String value = Jediscluster.get ("Test_jedis_cluster");        Logger.info (value);        Redistemplate.opsforvalue (). Set ("KKK", "KKK");        Redistemplate.opsforvalue (). Set ("K2", "V2");        Logger.info (Redistemplate.opsforvalue (). Get ("KKK"));    Logger.info (Redistemplate.opsforvalue (). Get ("Test_jedis_cluster")); }}
　　
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Spring Boot (9) Redis (Connect, delete, change, cluster, use with session)