redis整合（目前是在ssm框架下）

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/u012310865/article/details/82835898

这里只是类和方法的封装，机器如何安装redis服务还得按百度教程去做；

一：pom文件，maven引包

 <!-- https://mvnrepository.com/artifact/redis.clients/jedis -->
    <dependency>
      <groupId>redis.clients</groupId>
      <artifactId>jedis</artifactId>
      <version>2.9.0</version>
    </dependency>
    <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
            <version>1.0.2.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.1.0</version>
        </dependency>

二：Dao层

package com.ye_0809.util.redis;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.RedisSerializer;

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();  
    }  

}

三：Service层

package com.ye_0809.util.redis;

import java.util.List;

public interface RedisSaveManageService {

     /** 
     * 新增 
     * <br>------------------------------<br> 
     * @param user 
     * @return 
     */  
     boolean add(String key ,String value);  

    /** 
     * 批量新增 使用pipeline方式 
     * <br>------------------------------<br> 
     * @param list 
     * @return 
     */  
     boolean add(List<String> key,List<String> values);  

    /** 
     * 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(String key,String value);  

    /** 
     * 通过key获取 
     * <br>------------------------------<br> 
     * @param keyId 
     * @return  
     */  
     String get(String key);

}

四：impl实现类：

package com.ye_0809.util.redis;

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.stereotype.Service;
@Service
public class RedisSaveManagerServiceImpl extends com.ye_0809.util.redis.AbstractBaseRedisDao<String, String> implements RedisSaveManageService {
     /**  
     * 新增 
     *<br>------------------------------<br> 
     * @param user 
     * @return 
     */  
    @Override
    public  boolean add( final String key,final String value) {
        // TODO Auto-generated method stub
        boolean result=redisTemplate.execute(new RedisCallback<Boolean>() {

            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                // TODO Auto-generated method stub
                RedisSerializer<String> serializer=getRedisSerializer();
                //序列化
                byte[] key2=serializer.serialize(key);
                byte[] value2=serializer.serialize(value);
                return connection.setNX(key2, value2);
            }
        });
        return result;
    }
    /** 
     * 批量新增 使用pipeline方式   
     *<br>------------------------------<br> 
     *@param list 
     *@return 
     */  
    @Override
    public  boolean add(final List<String> key, final List<String> values) {
        boolean result=redisTemplate.execute(new RedisCallback<Boolean>() {

            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer=getRedisSerializer();
                for (int i = 0; i < values.size(); i++) {
                    byte[] key2=serializer.serialize(key.get(i));
                    byte[] value2=serializer.serialize(values.get(i));
                    connection.setNX(key2, value2);
                }
                return true;
            }
        },false,true);
        return result;
    }

    @Override
    public  void delete(String key) {
         List<String> list = new ArrayList<>();  
            list.add(key);  
            delete(list);  
    }

    @Override
    public  void delete(final List<String> keys) {
        redisTemplate.execute(new RedisCallback<Boolean>() {

            @Override
            public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
                // TODO Auto-generated method stub
                RedisSerializer<String> serializer=getRedisSerializer();
                //序列化
                for(String k:keys){
                    byte[] key = serializer.serialize(k); 
                    connection.del(key);
                }
                return true;
            }
        });


    }

    @Override
    public  boolean update(final String key,final String value) {
        // TODO Auto-generated method stub
        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[] key2  = serializer.serialize(key);  
                byte[] value2 = serializer.serialize(value);  
                connection.set(key2, value2);  
                return true;  
            }  
        });  
        return result;  
    }

    @Override
    public String get(final String key) {
        String result = redisTemplate.execute(new RedisCallback<String>() {  
            public String doInRedis(RedisConnection connection)  
                    throws DataAccessException {  
                RedisSerializer<String> serializer = getRedisSerializer();  
                byte[] key2 = serializer.serialize(key);  
                byte[] value = connection.get(key2);  
                if (value == null) {  
                    return null;  
                }  
                String value2 = serializer.deserialize(value);  
                return value2;  
            }  
        });  
        return result;  
    }

}

最后！！！ 还要去配置文件配置下。我是配置在spring-mybatis里面了（也可以把它抽出来单独配个xml）

    <!-- redis配置加到这里 -->
    <context:property-placeholder location="classpath:redis.properties" ignore-unresolvable="true"/>  
     <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">  
        <property name="maxIdle" value="${maxIdle}" />  
        <property name="maxActive" value="${maxActive}" />  
        <property name="maxWait" value="${maxWait}" />  
        <property name="testOnBorrow" value="${testOnBorrow}" />  
    </bean>  

    <bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"  
        p:host-name="${host}" p:port="${port}"  p:pool-config-ref="poolConfig"/>  

    <bean id="redisTemplate" class="org.springframework.data.redis.core.RedisTemplate">  
        <property name="connectionFactory"   ref="connectionFactory" />  
    </bean>   
    <!-- redis配置  end! -->