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1，應用spring-data-redis整合
項目運用的pom.xml：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.x.redis</groupId>
<artifactId>Spring_redis</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Spring_redis</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.0.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.6.1</version>
</dependency>
<!-- 將現有的jakarta commons logging的調用轉換成lsf4j的調用。 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>1.6.1</version>
</dependency>
<!-- Hack：確保commons-logging的jar包不被引入，否則將和jcl-over-slf4j抵觸 -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
<scope>provided</scope>
</dependency>
<!-- slf4j的完成：logback，用來取代log4j。更快、更強！ -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>0.9.24</version>
<scope>runtime</scope>
</dependency>
</dependencies>
</project>
除了log局部，只要一個spring core 和 spring-data-redis了
項目文件目錄構造：
applicationContext.xml：
1，context:property-placeholder 標簽用來導入properties文件。從而交換${redis.maxIdle}這樣的變量。
2，context:component-scan 是為了在com.x.redis.dao報下的類可以適用spring的注解注入的方式。
3，現實上我們只需求把JedisPoolConfig配數來就好了，接上去就是spring的封裝了。所以直接看UserDAOImpl的完成就明白了。
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:property-placeholder location="classpath:redis.properties" />
<context:component-scan base-package="com.x.redis.dao">
</context:component-scan>
<bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxIdle" value="${redis.maxIdle}" />
<property name="maxActive" value="${redis.maxActive}" />
<property name="maxWait" value="${redis.maxWait}" />
<property name="testOnBorrow" value="${redis.testOnBorrow}" />
</bean>
<bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"
p:host-name="${redis.host}" p:port="${redis.port}" p:password="${redis.pass}" p:pool-config-ref="poolConfig"/>
<bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
<property name="connectionFactory" ref="connectionFactory" />
</bean>
<bean id="userDAO" class="com.x.redis.dao.impl.UserDAOImpl" />
</beans>
redis.properties：
# Redis settings #redis.host=192.168.20.101 #redis.port=6380 #redis.pass=foobared redis.host=127.0.0.1 redis.port=6379 redis.pass= redis.maxIdle=300 redis.maxActive=600 redis.maxWait=1000 redis.testOnBorrow=true
UserDAOImpl：
1，spring對dao層的封裝很多用了相似於上面代碼的模板方式。
2，RedisTemplate就是spring對redis的一個封裝而已。
public class UserDAOImpl implements UserDAO {
@Autowired
protected RedisTemplate<Serializable, Serializable> redisTemplate;
public void saveUser(final User user) {
redisTemplate.execute(new RedisCallback<Object>() {
@Override
public Object doInRedis(RedisConnection connection) throws DataAccessException {
connection.set(redisTemplate.getStringSerializer().serialize("user.uid." + user.getId()),
redisTemplate.getStringSerializer().serialize(user.getName()));
return null;
}
});
}
@Override
public User getUser(final long id) {
return redisTemplate.execute(new RedisCallback<User>() {
@Override
public User doInRedis(RedisConnection connection) throws DataAccessException {
byte[] key = redisTemplate.getStringSerializer().serialize("user.uid." + id);
if (connection.exists(key)) {
byte[] value = connection.get(key);
String name = redisTemplate.getStringSerializer().deserialize(value);
User user = new User();
user.setName(name);
user.setId(id);
return user;
}
return null;
}
});
}
}
其他：
User：
public class User {
private long id;
private String name;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
測試代碼：
public static void main(String[] args) {
ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:/applicationContext.xml");
UserDAO userDAO = (UserDAO)ac.getBean("userDAO");
User user1 = new User();
user1.setId(1);
user1.setName("obama");
userDAO.saveUser(user1);
User user2 = userDAO.getUser(1);
System.out.println(user2.getName());
}
2，不應用spring-data-redis整合
團體覺得這樣整合靈敏度更大，可以愈加明了的完成義務。
pom.xml:
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.d.work</groupId>
<artifactId>Redis_Templete</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>Redis_Templete</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.1.0</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.6.1</version>
</dependency>
<!-- 將現有的jakarta commons logging的調用轉換成lsf4j的調用。 -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>1.6.1</version>
</dependency>
<!-- Hack：確保commons-logging的jar包不被引入，否則將和jcl-over-slf4j抵觸 -->
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
<scope>provided</scope>
</dependency>
<!-- slf4j的完成：logback，用來取代log4j。更快、更強！ -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>0.9.24</version>
<scope>runtime</scope>
</dependency>
</dependencies>
</project>
目錄構造：
data-source.xml
1，context:property-placeholder 和 context:component-scan 後面解釋過啦。
2，配置了一個ShardedJedisPool，在jdeis裡 還有個JedisPool。這兩個的區別:
一個是分片方式，可以銜接有主備的redis服務端，一個是單個的。詳細後續學習
3，由於不運用spring-data-redis的封裝，所以自己要自己封裝一個
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:property-placeholder location="classpath:redis.properties" />
<context:component-scan base-package="com.d.work.main">
</context:component-scan>
<context:component-scan base-package="com.d.work.redis">
</context:component-scan>
<bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
<property name="maxActive" value="50" />
<property name="maxIdle" value="8" />
<property name="maxWait" value="1000" />
<property name="testOnBorrow" value="true"/>
<property name="testOnReturn" value="true"/>
<!-- <property name="testWhileIdle" value="true"/> -->
</bean>
<bean id="shardedJedisPool" class="redis.clients.jedis.ShardedJedisPool" scope="singleton">
<constructor-arg index="0" ref="jedisPoolConfig" />
<constructor-arg index="1">
<list>
<bean class="redis.clients.jedis.JedisShardInfo">
<constructor-arg name="host" value="${redis.host}" />
<constructor-arg name="port" value="${redis.port}" />
<constructor-arg name="timeout" value="${redis.timeout}" />
<constructor-arg name="weight" value="1" />
</bean>
</list>
</constructor-arg>
</bean>
</beans>
RedisDataSource:定義三個辦法
public interface RedisDataSource {
public abstract ShardedJedis getRedisClient();
public void returnResource(ShardedJedis shardedJedis);
public void returnResource(ShardedJedis shardedJedis,boolean broken);
}
完成redisDataSource:
1, 注入配置好的ShardedJedisPool，這三個辦法的作用：
getRedisClient() ： 獲得redis的客戶端，可以執行命令了。 returnResource(ShardedJedis shardedJedis) ： 將資源返還給pool returnResource(ShardedJedis shardedJedis, boolean broken) : 呈現異常後，將資源返還給pool （其實不需求第二個辦法）
@Repository("redisDataSource")
public class RedisDataSourceImpl implements RedisDataSource {
private static final Logger log = LoggerFactory.getLogger(RedisDataSourceImpl.class);
@Autowired
private ShardedJedisPool shardedJedisPool;
public ShardedJedis getRedisClient() {
try {
ShardedJedis shardJedis = shardedJedisPool.getResource();
return shardJedis;
} catch (Exception e) {
log.error("getRedisClent error", e);
}
return null;
}
public void returnResource(ShardedJedis shardedJedis) {
shardedJedisPool.returnResource(shardedJedis);
}
public void returnResource(ShardedJedis shardedJedis, boolean broken) {
if (broken) {
shardedJedisPool.returnBrokenResource(shardedJedis);
} else {
shardedJedisPool.returnResource(shardedJedis);
}
}
}
第二層的封裝：RedisClientTemplate，例子完成了放值和取值。最後代碼提供了全部命令的完成。
代碼就是映射性質的又一次調用jedis的辦法而已，用了個broken來做標示符，決議返還資源的方式。
這一層的目的次要也是讓再下層的調用不需求關懷pool中鏈接的獲得和返還問題了。
@Repository("redisClientTemplate")
public class RedisClientTemplate {
private static final Logger log = LoggerFactory.getLogger(RedisClientTemplate.class);
@Autowired
private RedisDataSource redisDataSource;
public void disconnect() {
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
shardedJedis.disconnect();
}
/**
* 設置單個值
*
* @param key
* @param value
* @return
*/
public String set(String key, String value) {
String result = null;
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
if (shardedJedis == null) {
return result;
}
boolean broken = false;
try {
result = shardedJedis.set(key, value);
} catch (Exception e) {
log.error(e.getMessage(), e);
broken = true;
} finally {
redisDataSource.returnResource(shardedJedis, broken);
}
return result;
}
/**
* 獲取單個值
*
* @param key
* @return
*/
public String get(String key) {
String result = null;
ShardedJedis shardedJedis = redisDataSource.getRedisClient();
if (shardedJedis == null) {
return result;
}
boolean broken = false;
try {
result = shardedJedis.get(key);
} catch (Exception e) {
log.error(e.getMessage(), e);
broken = true;
} finally {
redisDataSource.returnResource(shardedJedis, broken);
}
return result;
}
}
測試代碼：
public static void main(String[] args) {
ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:/data-source.xml");
RedisClientTemplate redisClient = (RedisClientTemplate)ac.getBean("redisClientTemplate");
redisClient.set("a", "abc");
System.out.println(redisClient.get("a"));
}
附上RedisClientTemplate全部完成：
RedisClientTemplate代碼太多，附上下載地址：http://xiazai.jb51.net/201701/yuanma/RedisClientTemplate_jb51.rar
以上就是本文的全部內容，希望對大家的學習有所協助，也希望大家多多支持。
