Spring集成Redis详解代码示例

  • Z时代
  • 2024-01-10
  • 分类：IT

本文章从头开始介绍Spring集成Redis的示例。

Eclipse工程结构

如下图为我的示例工程的结构图，采用Maven构建。其中需要集成Spring，因此需要beans.xml文件配置spring的依赖注入，redis.properties配置连接服务器的配置信息。

其中工程中beans.xml和redis.properties文件直接放在了根目录，有需要的读者可以放到resource目录中。

POM依赖

如下为示例POM依赖，Spring集成redis需要依赖的包为：jedis包，spring-context模块及依赖的包，spring-data-redis模块包，spring-test包用于JUnit测试，pom.xml文件内容如下：

<project xmlns="https://maven.apache.org/POM/4.0.0" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="https://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelversion>4.0.0</modelversion>
  <groupid>com.test</groupid>
  JavaTest</artifactid>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>
  <name>JavaTest</name>
  <url>https://maven.apache.org</url>
  <properties>
    <project.build.sourceencoding>UTF-8</project.build.sourceencoding>
  </properties>
  <dependencies>
    <dependency>
      <groupid>junit</groupid>
      junit</artifactid>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupid>redis.clients</groupid>
      jedis</artifactid>
      <version>2.5.1</version>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      spring-context</artifactid>
      <version>4.2.6.RELEASE</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupid>org.springframework</groupid>
      spring-test</artifactid>
      <version>4.2.6.RELEASE</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupid>org.springframework.data</groupid>
      spring-data-redis</artifactid>
      <version>1.7.2.RELEASE</version>
    </dependency>
  </dependencies>
</project>

Spring配置

Spring配置文件beans.xml的配置如下：

<!--?xml version="1.0" encoding="UTF-8"?--> 
<beans xmlns="https://www.springframework.org/schema/beans" xmlns:aop="https://www.springframework.org/schema/aop" xmlns:context="https://www.springframework.org/schema/context" xmlns:jee="https://www.springframework.org/schema/jee" xmlns:p="https://www.springframework.org/schema/p" xmlns:tx="https://www.springframework.org/schema/tx" xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation=" 
      https://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd 
      https://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> 
  <!-- 加载classpath下的Redis配置文件 -->
  <context:property-placeholder location="classpath:redis.properties">
  <bean class="redis.clients.jedis.JedisPoolConfig" id="poolConfig"> 
    <property name="maxIdle" value="${redis.maxIdle}">
    <property name="testOnBorrow" value="${redis.testOnBorrow}">
  </property></property></bean> 
  <bean class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory" id="connectionFactory" p:host-name="${redis.host}" p:password="${redis.pass}" p:pool-config-ref="poolConfig" p:port="${redis.port}"> 
  <!-- spring提供的模板类 -->
  <bean class="org.springframework.data.redis.core.StringRedisTemplate" id="redisTemplate"> 
    <property name="connectionFactory" ref="connectionFactory">
  </property></bean>
  <bean class="com.redis.test.UserDao" id="userDao">
    <property name="redisTemplate" ref="redisTemplate"> 
  </property></bean>
</bean></context:property-placeholder></beans>

在beans.xml配置文件中，需要先加载redis.properties文件。

Redis配置信息

Redis的配置信息在redis.properties文件中配置：

# Redis地址和端口和连接密码
redis.host=localhost
redis.port=6379
redis.pass=
redis.maxIdle=300
redis.testOnBorrow=true

此示例，连接Redis服务器时没有设置连接密码，因此不用填值。

Java代码

User.java

package com.redis.test;
import java.io.Serializable;
public class User implements Serializable {
	private static final long serialVersionUID = 3409768855488864675L;
	private String id;
	private String name;
	private String password;
	public User() {
	}
	public User(String id, String name, String password) {
		this.id = id;
		this.name = name;
		this.password = password;
	}
	public String getId() {
		return id;
	}
	public void setId(String id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	public String toString() {
		return "User [id=" + id + ", name=" + name + ", password=" + password + "]";
	}
}

AbstractRedisBaseDao.java

package com.redis.test;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.RedisSerializer;
public abstract class AbstractRedisBaseDao<k, v=""> {
  protected RedisTemplate<k, v=""> redisTemplate;
public RedisTemplate<k, v=""> getRedisTemplate() {
	return redisTemplate;
}
public void setRedisTemplate(RedisTemplate<k, v=""> redisTemplate) {
	this.redisTemplate = redisTemplate;
}
/**
   * 获取 RedisSerializer
   */
protected RedisSerializer<string> getRedisSerializer() {
	return redisTemplate.getStringSerializer();
}
}

IUserDao.java

package com.redis.test;
import java.util.List;
public interface IUserDao {
	/** 新增 */
	Boolean add(User user);
	/** 批量新增，pipeline方式 */
	Boolean add(List<user> list);
	/** 删除 */
	void delete(String key);
	/** 批量删除 */
	void delete(List<string> keys);
	/** 更新 */
	Boolean update(User user);
	/** 读取 */
	User get(String keyId);
}

UserDao.java

package com.redis.test;
import java.util.List;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.util.Assert;
public class UserDao extends AbstractRedisBaseDao<string, user=""> implements IUserDao {
  public Boolean add(final User user) {
	Boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
		public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
			RedisSerializer<string> serializer = getRedisSerializer();
			byte[] key = serializer.serialize(user.getId());
			// 将ID序列化成key
			byte[] value = serializer.serialize(user.getName());
			return connection.setNX(key, value);
		}
	}
	);
	return result;
}
public Boolean add(final List<user> list) {
	Assert.notEmpty(list);
	Boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
		public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
			RedisSerializer<string> serializer = getRedisSerializer();
			for (int i = 0; i < list.size(); i++) {
				User user = list.get(i);
				byte[] key = serializer.serialize(user.getId());
				// 将ID序列化成key
				byte[] value = serializer.serialize(user.getName());
				connection.setNX(key, value);
			}
			return true;
		}
	}
	, false, true);
	return result;
}
public void delete(String key) {
	redisTemplate.delete(key);
}
public void delete(List<string> keys) {
	redisTemplate.delete(keys);
}
public Boolean update(final User user) {
	String key = user.getId();
	if(get(key) == null) {
		throw new NullPointerException("数据行不存在,key = " + key);
	}
	Boolean result = redisTemplate.execute(new RedisCallback<Boolean>() {
		public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
			RedisSerializer<string> serializer = getRedisSerializer();
			byte[] key = serializer.serialize(user.getId());
			// 将ID序列化成key
			byte[] value = serializer.serialize(user.getName());
			connection.set(key, value);
			return true;
		}
	}
	);
	return result;
}
public User get(final String keyId) {
	User user = redisTemplate.execute(new RedisCallback<user>() {
		public User doInRedis(RedisConnection connection) throws DataAccessException {
			RedisSerializer<string> serializer = getRedisSerializer();
			byte[] key = serializer.serialize(keyId);
			byte[] value = connection.get(key);
			if(value == null) {
				return null;
			}
			String name = serializer.deserialize(value);
			return new User(keyId, name, null);
		}
	}
	);
	return user;
}
}

RedisTest.java（JUnit测试类）

package com.redis.test;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;
import org.springframework.util.Assert;
/**
 * junit在Spring context环境下测试
 */
@ContextConfiguration(locations={"classpath*:beans.xml"})
public class RedisTest extends AbstractJUnit4SpringContextTests {
	@Autowired
	  private IUserDao userDao;
	/** 增加单个用户 */
	@Test
	  public void testAddUser() {
		User user = new User("user1", "password1", null);
		Boolean result = userDao.add(user);
		Assert.isTrue(result);
		System.out.println("添加结果：" + result);
	}
	/** 批量新增普通方式,5286ms */
	@Test
	  public void testAddUsers1() {
		List<user> list = new ArrayList<user>();
		for (int i = 10; i < 50000; i++) {
			User user = new User();
			user.setId("user" + i);
			user.setName("password" + i);
			list.add(user);
		}
		long begin = System.currentTimeMillis();
		for (User user : list) {
			userDao.add(user);
		}
		System.out.println(System.currentTimeMillis() - begin);
	}
	/** 批量新增pipeline方式,484ms */
	@Test
	  public void testAddUsers2() {
		List<user> list = new ArrayList<user>();
		for (int i = 50000; i < 100000; i++) {
			User user = new User();
			user.setId("user" + i);
			user.setName("password" + i);
			list.add(user);
		}
		long begin = System.currentTimeMillis();
		Boolean result = userDao.add(list);
		Assert.isTrue(result);
		System.out.println(System.currentTimeMillis() - begin);
	}
	/** 更新 */
	@Test
	  public void testUpdate() {
		User user = new User();
		user.setId("user1");
		user.setName("new_password");
		Boolean result = userDao.update(user);
		Assert.isTrue(result);
	}
	/** 删除 */
	@Test
	  public void testDelete() {
		String key = "user1";
		userDao.delete(key);
	}
	/** 批量删除 */
	@Test
	  public void testDeletes() {
		List<string> list = new ArrayList<string>();
		for (int i = 0; i < 10; i++) {
			list.add("user" + i);
		}
		userDao.delete(list);
	}
	/** 读取 */
	@Test
	  public void testGetUser() {
		String id = "user1";
		User user = userDao.get(id);
		Assert.notNull(user);
		System.out.println(user);
	}
}

总结

以上就是本文关于Spring集成Redis详解代码示例的全部内容，希望对大家有所帮助。感兴趣的朋友可以继续参阅本站：

浅谈spring 常用注解

spring中的FactoryBean代码示例

浅谈Spring的两种配置容器

如有不足之处，欢迎留言指出。感谢朋友们对本站的支持！

以上是 Spring集成Redis详解代码示例 的全部内容， 来源链接： utcz.com/p/214982.html

回到顶部