spring整合Redis

spring整合Redis

关键

1. 了解重要的jar包

spring-data-redis
jedis

2. 了解注入的bean有什么作用

Java和Redis的连接池配置
redis.clients.jedis.JedisPoolConfig

通过spring的factory和jedis连接池信息，创建连接
org.springframework.data.redis.connection.jedis.JedisConnectionFactory

对Redis进行增删改查的包装类
org.springframework.data.redis.core.StringRedisTemplate

代码

必须在pom中加入jar包

<dependencies> 

    <!-- spring对Redis操作的封装和建立连接，操作 key - value 数据更简单 --> 
    <dependency>  
        <groupId>org.springframework.data</groupId>  
        <artifactId>spring-data-redis</artifactId>  
        <version>1.0.2.RELEASE</version>  
    </dependency>  
      
    <!-- 用于java和Redis建立连接池 -->
    <dependency>  
        <groupId>redis.clients</groupId>  
        <artifactId>jedis</artifactId>  
        <version>2.1.0</version>  
    </dependency>  
      
</dependencies>  

将需要装配的bean，配置到applicationContext.xml中

<?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">  
  
    <!-- 加载配置文件 -->
    <context:property-placeholder location="classpath:redis.properties" />  
  
    <!-- jedis连接池配置，如Redis的连接池配置 -->
    <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>  
      
    <!-- 通过factory和连接池配置，建立与Redis的连接 -->
    <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"/>  
      
    <!-- 用户对Redis进行增删改查的包装类 -->
    <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">  
        <property name="connectionFactory"   ref="connectionFactory" />  
    </bean>         
      
    <bean id="userDao" class="com.x.dao.impl.UserDao" />   
</beans>  

redis.properties

# Redis settings  
redis.host=localhost  
redis.port=6379  
redis.pass=java2000_wl  
  
  
redis.maxIdle=300  
redis.maxActive=600  
redis.maxWait=1000  
redis.testOnBorrow=true  

javabean

package com.x.entity;  
  
import java.io.Serializable;  
  
/**  
 * @author http://blog.csdn.net/java2000_wl  
 * @version <b>1.0</b>  
 */   
public class User implements Serializable {  
      
    private static final long serialVersionUID = -6011241820070393952L;  
  
    private String id;  
      
    private String name;  
      
    private String password;  
  
    /** 
     * <br>------------------------------<br> 
     */  
    public User() {  
          
    }  
      
    /** 
     * <br>------------------------------<br> 
     */  
    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;  
    }  
}  

Dao抽象类

package com.x.dao;  
  
import org.springframework.beans.factory.annotation.Autowired;  
import org.springframework.data.redis.core.RedisTemplate;  
import org.springframework.data.redis.serializer.RedisSerializer;  
  
/**  
 * AbstractBaseRedisDao 
 * @author http://blog.csdn.net/java2000_wl  
 * @version <b>1.0</b>  
 */   
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();  
    }  
} 

Dao接口

package com.x.dao;  
  
import java.util.List;  
  
import com.x.entity.User;  
  
/**  
 * @author http://blog.csdn.net/java2000_wl  
 * @version <b>1.0</b>  
 */   
public interface IUserDao {  
      
    /** 
     * 新增 
     * <br>------------------------------<br> 
     * @param user 
     * @return 
     */  
    boolean add(User user);  
      
    /** 
     * 批量新增 使用pipeline方式 
     * <br>------------------------------<br> 
     * @param list 
     * @return 
     */  
    boolean add(List<User> list);  
      
    /** 
     * 删除 
     * <br>------------------------------<br> 
     * @param key 
     */  
    void delete(String key);  
      
    /** 
     * 删除多个 
     * <br>------------------------------<br> 
     * @param keys 
     */  
    void delete(List<String> keys);  
      
    /** 
     * 修改 
     * <br>------------------------------<br> 
     * @param user 
     * @return  
     */  
    boolean update(User user);  
  
    /** 
     * 通过key获取 
     * <br>------------------------------<br> 
     * @param keyId 
     * @return  
     */  
    User get(String keyId);  
} 

Dao实现类

package com.x.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.x.dao.AbstractBaseRedisDao;  
import com.x.dao.IUserDao;  
import com.x.entity.User;  
  
/**  
 * Dao 
 * @author http://blog.csdn.net/java2000_wl  
 * @version <b>1.0</b>  
 */   
public class UserDao extends AbstractBaseRedisDao<String, User> implements IUserDao {  
  
    /**  
     * 新增 
     *<br>------------------------------<br> 
     * @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   
     *<br>------------------------------<br> 
     *@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 
     * <br>------------------------------<br> 
     * @param key 
     */  
    public void delete(String key) {  
        List<String> list = new ArrayList<String>();  
        list.add(key);  
        delete(list);  
    }  
  
    /** 
     * 删除多个 
     * <br>------------------------------<br> 
     * @param keys 
     */  
    public void delete(List<String> keys) {  
        redisTemplate.delete(keys);  
    }  
  
    /** 
     * 修改  
     * <br>------------------------------<br> 
     * @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 
     * <br>------------------------------<br> 
     * @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;  
    }  
} 

测试类

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.x.dao.IUserDao;  
import com.x.entity.User;  
  
/**  
 * 测试 
 * @author http://blog.csdn.net/java2000_wl  
 * @version <b>1.0</b>  
 */    
@ContextConfiguration(locations = {"classpath*:applicationContext.xml"})  
public class RedisTest extends AbstractJUnit4SpringContextTests {  
      
    @Autowired  
    private IUserDao userDao;  
      
    /** 
     * 新增 
     * <br>------------------------------<br> 
     */  
    @Test  
    public void testAddUser() {  
        User user = new User();  
        user.setId("user1");  
        user.setName("java2000_wl");  
        boolean result = userDao.add(user);  
        Assert.assertTrue(result);  
    }  
      
    /** 
     * 批量新增 普通方式 
     * <br>------------------------------<br> 
     */  
    @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("java2000_wl" + 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 
     * <br>------------------------------<br> 
     */  
    @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("java2000_wl" + i);  
            list.add(user);  
        }  
        long begin = System.currentTimeMillis();  
        boolean result = userDao.add(list);  
        System.out.println(System.currentTimeMillis() - begin);  
        Assert.assertTrue(result);  
    }  
      
    /** 
     * 修改 
     * <br>------------------------------<br> 
     */  
    @Test  
    public void testUpdate() {  
        User user = new User();  
        user.setId("user1");  
        user.setName("new_password");  
        boolean result = userDao.update(user);  
        Assert.assertTrue(result);  
    }  
      
    /** 
     * 通过key删除单个 
     * <br>------------------------------<br> 
     */  
    @Test  
    public void testDelete() {  
        String key = "user1";  
        userDao.delete(key);  
    }  
      
    /** 
     * 批量删除 
     * <br>------------------------------<br> 
     */  
    @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 
     * <br>------------------------------<br> 
     */  
    @Test  
    public void testGetUser() {  
        String id = "user1";  
        User user = userDao.get(id);  
        Assert.assertNotNull(user);  
        Assert.assertEquals(user.getName(), "java2000_wl");  
    }  
  
    /** 
     * 设置userDao 
     * @param userDao the userDao to set 
     */  
    public void setUserDao(IUserDao userDao) {  
        this.userDao = userDao;  
    }  
}  

参考：

http://blog.csdn.net/java2000_wl/article/details/8543203/