Spring整合Redis完整实例代码
做过大型软件系统的同学都知道,随着系统数据越来越庞大,越来越复杂,随之带来的问题就是系统性能越来越差,尤其是频繁操作数据库带来的性能损耗更为严重。很多业绩大牛为此提出了众多的解决方案和开发了很多框架以优化这种频繁操作数据库所带来的性能损耗,其中,尤为突出的两个缓存服务器是Memcached和Redis。今天,我们不讲Memcached和Redis本身,这里主要为大家介绍如何使spring与Redis整合。
1、pom构建
<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>springredis</artifactId> <version>0.0.1-SNAPSHOT</version> <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-test</artifactId> <version>3.1.2.RELEASE</version> <scope>test</scope> </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> </dependencies> </project>
2、spring配置文件(applicationContext.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: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" /> <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.lyz.dao.impl.UserDaoImpl" /> </beans>
3、redis.properties
# Redis settings redis.host=192.168.157.130 redis.port=6379 redis.pass=liuyazhuang redis.maxIdle=300 redis.maxActive=600 redis.maxWait=1000 redis.testOnBorrow=true
4、User实体类
package com.lyz.entity; import java.io.Serializable; /** * user实体类 * @author liuyazhuang * */ public class User implements Serializable { private static final long serialVersionUID = -6011241820070393952L; private String id; private String name; private String password; public User() { } public User(String id, String name, String password) { super(); this.id = id; this.name = name; this.password = password; } /** * 获得id * @return the id */ public String getId() { return id; } /** * 设置id * @param id the id to set */ public void setId(String id) { this.id = id; } /** * 获得name * @return the name */ public String getName() { return name; } /** * 设置name * @param name the name to set */ public void setName(String name) { this.name = name; } /** * 获得password * @return the password */ public String getPassword() { return password; } /** * 设置password * @param password the password to set */ public void setPassword(String password) { this.password = password; } }
5、User操作的接口IUserDao
package com.lyz.dao; import java.util.List; import com.lyz.entity.User; /** * user操作接口 * @author liuyazhuang * */ public interface IUserDao { /** * 新增 * @param user * @return */ boolean add(User user); /** * 批量新增 使用pipeline方式 * @param list * @return */ boolean add(List<User> list); /** * 删除 * @param key */ void delete(String key); /** * 删除多个 * @param keys */ void delete(List<String> keys); /** * 修改 * @param user * @return */ boolean update(User user); /** * 通过key获取 * @param keyId * @return */ User get(String keyId); }
6、基本的抽象类
package com.lyz.dao.impl; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.serializer.RedisSerializer; /** * 基本的抽象类 * @author liuyazhuang * * @param <K> * @param <V> */ public abstract class AbstractBaseRedisDao<K, V> { @Autowired protected RedisTemplate<K, V> redisTemplate; /** * 设置redisTemplate * @param redisTemplate the redisTemplate to set */ public void setRedisTemplate(RedisTemplate<K, V> redisTemplate) { this.redisTemplate = redisTemplate; } /** * 获取 RedisSerializer * <br>------------------------------<br> */ protected RedisSerializer<String> getRedisSerializer() { return redisTemplate.getStringSerializer(); } }
7、IUserDao的实现类UserDaoImpl
package com.lyz.dao.impl; import java.util.ArrayList; 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; import com.lyz.dao.IUserDao; import com.lyz.entity.User; /** * 接口的实现类 * @author liuyazhuang * */ public class UserDaoImpl extends AbstractBaseRedisDao<String, User> implements IUserDao { /** * 新增 * @param user * @return */ 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()); byte[] name = serializer.serialize(user.getName()); return connection.setNX(key, name); } }); return result; } /** * 批量新增 使用pipeline方式 *@param list *@return */ 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 (User user : list) { byte[] key = serializer.serialize(user.getId()); byte[] name = serializer.serialize(user.getName()); connection.setNX(key, name); } return true; } }, false, true); return result; } /** * 删除 * @param key */ public void delete(String key) { List<String> list = new ArrayList<String>(); list.add(key); delete(list); } /** * 删除多个 * @param keys */ public void delete(List<String> keys) { redisTemplate.delete(keys); } /** * 修改 * @param user * @return */ 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()); byte[] name = serializer.serialize(user.getName()); connection.set(key, name); return true; } }); return result; } /** * 通过key获取 * @param keyId * @return */ public User get(final String keyId) { User result = 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 result; } }
8、测试类RedisTest
package com.lyz.test; import java.util.ArrayList; import java.util.List; import junit.framework.Assert; 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 com.lyz.dao.IUserDao; import com.lyz.entity.User; /** * Redis测试类 * @author liuyazhuang * */ @ContextConfiguration(locations = {"classpath*:applicationContext.xml"}) public class RedisTest extends AbstractJUnit4SpringContextTests { @Autowired private IUserDao userDao; /** * 新增 */ @Test public void testAddUser() { User user = new User(); user.setId("user1"); user.setName("liuyazhuang"); boolean result = userDao.add(user); Assert.assertTrue(result); } /** * 批量新增 普通方式 */ @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("liuyazhuang" + 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 */ @Test public void testAddUsers2() { List<User> list = new ArrayList<User>(); for (int i = 10; i < 1500000; i++) { User user = new User(); user.setId("user" + i); user.setName("liuyazhuang" + i); list.add(user); } long begin = System.currentTimeMillis(); boolean result = userDao.add(list); System.out.println(System.currentTimeMillis() - begin); Assert.assertTrue(result); } /** * 修改 */ @Test public void testUpdate() { User user = new User(); user.setId("user1"); user.setName("liuyazhuang"); boolean result = userDao.update(user); Assert.assertTrue(result); } /** * 通过key删除单个 */ @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); } /** * 获取 */ @Test public void testGetUser() { String id = "user1"; User user = userDao.get(id); Assert.assertNotNull(user); Assert.assertEquals(user.getName(), "liuyazhuang"); } /** * 设置userDao * @param userDao the userDao to set */ public void setUserDao(IUserDao userDao) { this.userDao = userDao; } }
9、温馨提示
项目下载地址:Spring-Redis_jb51.rar
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。
相关文章
Java利用openoffice将doc、docx转为pdf实例代码
这篇文章主要介绍了Java利用openoffice将doc、docx转为pdf实例代码,分享了相关代码示例,小编觉得还是挺不错的,具有一定借鉴价值,需要的朋友可以参考下2018-01-01常用Maven库,镜像库及maven/gradle配置(小结)
这篇文章主要介绍了常用Maven库,镜像库及maven/gradle配置(小结),文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧2020-12-12java JDBC主要组件连接数据库及执行SQL过程示例全面详解
这篇文章主要为大家介绍了java JDBC主要组件连接数据库及执行SQL的过程示例全面详解,有需要的朋友可以借鉴参考下,希望能够有所帮助,祝大家多多进步,早日升职加薪2023-06-06BeanUtils.copyProperties()参数的赋值顺序说明
这篇文章主要介绍了BeanUtils.copyProperties()参数的赋值顺序说明,具有很好的参考价值,希望对大家有所帮助。如有错误或未考虑完全的地方,望不吝赐教2021-09-09Spring中@RabbitHandler和@RabbitListener的区别详析
@RabbitHandler是用于处理消息的方法注解,它与@RabbitListener注解一起使用,这篇文章主要给大家介绍了关于Spring中@RabbitHandler和@RabbitListener区别的相关资料,需要的朋友可以参考下2024-02-02
最新评论