SSM結合Redis

Redis的啓動

1.redis最簡單的啓動就是運行redis安裝目錄下的redis-server.exe文件，運行成功會打開一個dos命令窗口，但是窗口已關閉redis就會停止運行

2、還有一種方法是將Redis變成服務進程，操作方法如下

1.win+R,輸入cmd打開命令窗口 
2.進入redis安裝目錄 
3.輸入：redis-server –service-install redis.windows.conf –loglevel verbose ( 安裝redis服務 ) 
4.輸入：redis-server –service-start ( 啓動服務 ) 
5.輸入：redis-server –service-stop(停止服務)

 序列化與反序列化概念

序列化：把對象轉換爲字節序列的過程稱爲對象的序列化。
反序列化：把字節序列恢復爲對象的過程稱爲對象的反序列化。

SSM結合Redis

pom.xml（注意版本的一致，不然會出現問題）

	<!-- config redis data and client jar-->
	<dependency>
	    <groupId>org.springframework.data</groupId>
	    <artifactId>spring-data-redis</artifactId>
	    <version>1.6.0.RELEASE</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-pool2 -->
	<dependency>
	    <groupId>org.apache.commons</groupId>
	    <artifactId>commons-pool2</artifactId>
	    <version>2.4.2</version>
	</dependency>
	<!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
	<dependency>
	    <groupId>redis.clients</groupId>
	    <artifactId>jedis</artifactId>
	    <version>2.7.2</version>
	</dependency>

redis.properties

#redis主機IP
redis.host=127.0.0.1
#端口
redis.port=6379
redis.password=
# 最大連接數
redis.maxTotal=30
# 最大空閒連接數
redis.maxIdle=10
# 獲取鏈接最大等待毫秒
redis.maxWaitMillis=1000
# 獲取鏈接時檢查有效性
redis.testOnBorrow=true
redis.testOnReturn=true

 applicationContext-redis.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
	xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:task="http://www.springframework.org/schema/task"
	xsi:schemaLocation="
	http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
	http://www.springframework.org/schema/tx
	http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
	http://www.springframework.org/schema/aop
	http://www.springframework.org/schema/aop/spring-aop-3.1.xsd
	http://www.springframework.org/schema/context
	http://www.springframework.org/schema/context/spring-context-3.1.xsd
	http://www.springframework.org/schema/mvc
	http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
	http://www.springframework.org/schema/task
	http://www.springframework.org/schema/task/spring-task-3.1.xsd"> 
	
	<context:property-placeholder location="classpath:dbConfig/redis.properties" ignore-unresolvable="true"/>
	
	<!-- redis數據源 -->
	<bean id="poolConfig" 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>
		<property name="testOnReturn" value="${redis.testOnReturn}"></property>
		<!-- 在空閒時檢查有效性, 默認false -->
		<property name="testWhileIdle" value="true" />
		<!-- 連接耗盡時是否阻塞, false報異常,ture阻塞直到超時, 默認true -->
		<property name="blockWhenExhausted" value="false" />
	</bean>
	
	<!--設置鏈接屬性-->
	<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
		<property name="hostName" value="${redis.host}"></property>
		<property name="port" value="${redis.port}"></property>
		<property name="password" value="${redis.password}"></property>
		<property name="poolConfig" ref="poolConfig"></property>	
	</bean>
	
	<!-- jedis模板配置 -->
	<bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
		<property name="connectionFactory" ref="connectionFactory"></property>
	</bean>
</beans>

junit test.class

    @Autowired
	private RedisTemplate redisTemplate;
	
	@Test
	public void test2()
	{
		redisTemplate.opsForValue().set("pass", "123456");
		logger.info("value "+redisTemplate.opsForValue().get("pass"));
	}

RedisTemplate介紹

      Spring封裝了RedisTemplate對象來進行對Redis的各種操作，它支持所有的Redis原生的api。RedisTemplate位於spring-data-redis包下。

創建工具類redisTemplateUtil來實現對redis的操作

public class RedisTemplateUtil {
	
	public static Logger logger=LoggerFactory.getLogger(RedisTemplateUtil.class);
	
	private RedisTemplate redisTemplate;

    public RedisTemplateUtil(RedisTemplate redisTemplate) {
        this.redisTemplate = redisTemplate;
    }


    public void set(String key, Object value) {
        ValueOperations valueOperations = redisTemplate.opsForValue();
        //設置過期時間 單位爲秒
        valueOperations.set(key, value,60*3,TimeUnit.SECONDS);

        //BoundValueOperations的理解對保存的值做一些細微的操作
//        BoundValueOperations boundValueOperations = redisTemplate.boundValueOps(key);
    }

    public Object get(String key) {
        return redisTemplate.opsForValue().get(key);
    }

    public void setList(String key, List<?> value) {
        //Operation  操作。
        ListOperations listOperations = redisTemplate.opsForList();
//        for(int i=0;i<value.size();i++)
//        {
//        	listOperations.leftPush(key, value.get(i));
//        }
        listOperations.leftPush(key, value);
    }

    public Object getList(String key) {
        return redisTemplate.opsForList().leftPop(key);
    }

    public void setSet(String key, Set<?> value) {
        SetOperations setOperations = redisTemplate.opsForSet();
        setOperations.add(key, value);
    }

    public Object getSet(String key) {
        return redisTemplate.opsForSet().members(key);
    }


    public void setHash(String key, Map<String, ?> value) {
        HashOperations hashOperations = redisTemplate.opsForHash();
        hashOperations.putAll(key, value);
    }

    public Object getHash(String key) {
        return redisTemplate.opsForHash().entries(key);
    }


    public void delete(String key) {
        redisTemplate.delete(key);
    }

    public void clearAll() {
        redisTemplate.multi();
    }
    
    public boolean hasKey(String key)//判斷redis數據庫中是否有key這個關鍵字
    {
    	return redisTemplate.hasKey(key);
    }
}