spring-boot 整合redis作為數據緩存

 

添加依賴

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-redis</artifactId> </dependency> 

Redis配置

package com.wisely.ij.config; import com.fasterxml.jackson.annotation.JsonAutoDetect; import com.fasterxml.jackson.annotation.PropertyAccessor; import com.fasterxml.jackson.databind.ObjectMapper; import org.springframework.cache.CacheManager; import org.springframework.cache.annotation.CachingConfigurerSupport; import org.springframework.cache.annotation.EnableCaching; import org.springframework.cache.interceptor.KeyGenerator; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.redis.cache.RedisCacheManager; import org.springframework.data.redis.connection.RedisConnectionFactory; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer; import java.lang.reflect.Method; @Configuration @EnableCaching public class RedisConfig extends CachingConfigurerSupport{ @Bean public KeyGenerator wiselyKeyGenerator(){ return new KeyGenerator() { @Override public Object generate(Object target, Method method, Object... params) { StringBuilder sb = new StringBuilder(); sb.append(target.getClass().getName()); sb.append(method.getName()); for (Object obj : params) { sb.append(obj.toString()); } return sb.toString(); } }; } @Bean public CacheManager cacheManager( @SuppressWarnings("rawtypes") RedisTemplate redisTemplate) { return new RedisCacheManager(redisTemplate); } @Bean public RedisTemplate<String, String> redisTemplate( RedisConnectionFactory factory) { StringRedisTemplate template = new StringRedisTemplate(factory); Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class); ObjectMapper om = new ObjectMapper(); om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); jackson2JsonRedisSerializer.setObjectMapper(om); template.setValueSerializer(jackson2JsonRedisSerializer); template.afterPropertiesSet(); return template; } } 

# REDIS (RedisProperties) spring.redis.database= # database name spring.redis.host=localhost # server host spring.redis.password= # server password spring.redis.port=6379 # connection port spring.redis.pool.max-idle=8 # pool settings ... spring.redis.pool.min-idle=0 spring.redis.pool.max-active=8 spring.redis.pool.max-wait=-1 spring.redis.sentinel.master= # name of Redis server spring.redis.sentinel.nodes= # comma-separated list of host:port pairs 

 

@Conditional(MyCondition.class)

 

這句代碼可以標注在類上面，表示該類下面的所有@Bean都會啟用配置

也可以標注在方法上面，只是對該方法啟用配置

 

除了自己自定義Condition之外，Spring還提供了很多Condition給我們用

@ConditionalOnBean（僅僅在當前上下文中存在某個對象時，才會實例化一個Bean）
@ConditionalOnClass（某個class位於類路徑上，才會實例化一個Bean）
@ConditionalOnExpression（當表達式為true的時候，才會實例化一個Bean）
@ConditionalOnMissingBean（僅僅在當前上下文中不存在某個對象時，才會實例化一個Bean）
@ConditionalOnMissingClass（某個class類路徑上不存在的時候，才會實例化一個Bean）
@ConditionalOnNotWebApplication（不是web應用）

org.springframework.boot:spring-boot-autoconfigure:1.3.0.M2

package org.springframework.boot.autoconfigure.redis;

import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.pool2.impl.GenericObjectPool;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingClass;
import org.springframework.boot.autoconfigure.redis.RedisProperties;
import org.springframework.boot.autoconfigure.redis.RedisProperties.Pool;
import org.springframework.boot.autoconfigure.redis.RedisProperties.Sentinel;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisNode;
import org.springframework.data.redis.connection.RedisSentinelConfiguration;
import org.springframework.data.redis.connection.jedis.JedisConnection;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPoolConfig;

@Configuration
@ConditionalOnClass({JedisConnection.class, RedisOperations.class, Jedis.class})
@EnableConfigurationProperties
public class RedisAutoConfiguration {
    public RedisAutoConfiguration() {
    }

    @Bean(
        name = {"org.springframework.autoconfigure.redis.RedisProperties"}
    )
    @ConditionalOnMissingBean
    public RedisProperties redisProperties() {
        return new RedisProperties();
    }

    @Configuration
    protected static class RedisConfiguration {
        protected RedisConfiguration() {
        }

        @Bean
        @ConditionalOnMissingBean(
            name = {"redisTemplate"}
        )
        public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
            RedisTemplate template = new RedisTemplate();
 template.setConnectionFactory(redisConnectionFactory); return template;
        }

        @Bean
        @ConditionalOnMissingBean({StringRedisTemplate.class})
        public StringRedisTemplate stringRedisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
            StringRedisTemplate template = new StringRedisTemplate();
 template.setConnectionFactory(redisConnectionFactory); return template;
        }
    }

    @Configuration
    @ConditionalOnClass({GenericObjectPool.class})
    protected static class RedisPooledConnectionConfiguration extends RedisAutoConfiguration.AbstractRedisConfiguration {
        protected RedisPooledConnectionConfiguration() {
        }

        @Bean
        @ConditionalOnMissingBean
        public RedisConnectionFactory redisConnectionFactory() throws UnknownHostException {
            return this.applyProperties(this.createJedisConnectionFactory());
        }

        private JedisConnectionFactory createJedisConnectionFactory() {
            return this.properties.getPool() != null?
new JedisConnectionFactory(this.getSentinelConfig(), this.jedisPoolConfig()):
new JedisConnectionFactory(this.getSentinelConfig());

 } private JedisPoolConfig jedisPoolConfig() { JedisPoolConfig config = new JedisPoolConfig(); Pool props = this.properties.getPool();  config.setMaxTotal(props.getMaxActive()); config.setMaxIdle(props.getMaxIdle()); config.setMinIdle(props.getMinIdle()); config.setMaxWaitMillis((long)props.getMaxWait()); return config; } } @Configuration @ConditionalOnMissingClass({"org.apache.commons.pool2.impl.GenericObjectPool"}) protected static class RedisConnectionConfiguration extends RedisAutoConfiguration.AbstractRedisConfiguration { protected RedisConnectionConfiguration() { } @Bean @ConditionalOnMissingBean public RedisConnectionFactory redisConnectionFactory() throws UnknownHostException { return this.applyProperties(new JedisConnectionFactory(this.getSentinelConfig())); } } protected abstract static class AbstractRedisConfiguration { @Autowired protected RedisProperties properties; @Autowired( required = false ) private RedisSentinelConfiguration sentinelConfiguration; protected AbstractRedisConfiguration() { } protected final JedisConnectionFactory applyProperties(JedisConnectionFactory factory) { factory.setHostName(this.properties.getHost()); factory.setPort(this.properties.getPort()); if(this.properties.getPassword() != null) { factory.setPassword(this.properties.getPassword()); }  factory.setDatabase(this.properties.getDatabase()); if(this.properties.getTimeout() > 0) { factory.setTimeout(this.properties.getTimeout()); } return factory; } protected final RedisSentinelConfiguration getSentinelConfig() { if(this.sentinelConfiguration != null) { return this.sentinelConfiguration; } else { Sentinel sentinelProperties = this.properties.getSentinel(); if(sentinelProperties != null) { RedisSentinelConfiguration config = new RedisSentinelConfiguration(); config.master(sentinelProperties.getMaster()); config.setSentinels(this.createSentinels(sentinelProperties)); return config; } else { return null; } } } private List<RedisNode> createSentinels(Sentinel sentinel) { ArrayList sentinels = new ArrayList(); String nodes = sentinel.getNodes(); String[] var4 = StringUtils.commaDelimitedListToStringArray(nodes); int var5 = var4.length; for(int var6 = 0; var6 < var5; ++var6) { String node = var4[var6]; try { String[] ex = StringUtils.split(node, ":"); Assert.state(ex.length == 2, "Must be defined as \'host:port\'"); sentinels.add(new RedisNode(ex[0], Integer.valueOf(ex[1]).intValue())); } catch (RuntimeException var9) { throw new IllegalStateException("Invalid redis sentinel property \'" + node + "\'", var9); } } return sentinels; } } }

 

package org.springframework.boot.autoconfigure.redis;

import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties(
    prefix = "spring.redis"
)
public class RedisProperties {
    private int database = 0; private String host = "localhost";
    private String password;
    private int port = 6379;
    private int timeout;
    private RedisProperties.Pool pool;
    private RedisProperties.Sentinel sentinel;

    public RedisProperties() {
    }

    public int getDatabase() {
        return this.database;
    }

    public void setDatabase(int database) {
        this.database = database;
    }

    public String getHost() {
        return this.host;
    }

    public void setHost(String host) {
        this.host = host;
    }

    public String getPassword() {
        return this.password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public int getPort() {
        return this.port;
    }

    public void setPort(int port) {
        this.port = port;
    }

    public void setTimeout(int timeout) {
        this.timeout = timeout;
    }

    public int getTimeout() {
        return this.timeout;
    }

    public RedisProperties.Sentinel getSentinel() {
        return this.sentinel;
    }

    public void setSentinel(RedisProperties.Sentinel sentinel) {
        this.sentinel = sentinel;
    }

    public RedisProperties.Pool getPool() {
        return this.pool;
    }

    public void setPool(RedisProperties.Pool pool) {
        this.pool = pool;
    }

    public static class Sentinel {
        private String master;
        private String nodes;

        public Sentinel() {
        }

        public String getMaster() {
            return this.master;
        }

        public void setMaster(String master) {
            this.master = master;
        }

        public String getNodes() {
            return this.nodes;
        }

        public void setNodes(String nodes) {
            this.nodes = nodes;
        }
    }

    public static class Pool {
        private int maxIdle = 8;
        private int minIdle = 0;
        private int maxActive = 8; private int maxWait = -1;

        public Pool() {
        }

        public int getMaxIdle() {
            return this.maxIdle;
        }

        public void setMaxIdle(int maxIdle) {
            this.maxIdle = maxIdle;
        }

        public int getMinIdle() {
            return this.minIdle;
        }

        public void setMinIdle(int minIdle) {
            this.minIdle = minIdle;
        }

        public int getMaxActive() {
            return this.maxActive;
        }

        public void setMaxActive(int maxActive) {
            this.maxActive = maxActive;
        }

        public int getMaxWait() {
            return this.maxWait;
        }

        public void setMaxWait(int maxWait) {
            this.maxWait = maxWait;
        }
    }
}

 

http://www.cnblogs.com/laoniu85/p/5224079.html