SpringBoot使用Redis緩衝

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　　（1）pom.xml引入jar包，如下：

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

　　（2）application.properties中配置Redis串連資訊，如下：

# Redis資料庫索引（預設為0）spring.redis.database=0# Redis伺服器位址spring.redis.host=172.31.19.222# Redis伺服器串連連接埠spring.redis.port=6379# Redis伺服器串連密碼（預設為空白）spring.redis.password=# 串連池最大串連數（使用負值表示沒有限制）spring.redis.pool.max-active=8# 串連池最大阻塞等待時間（使用負值表示沒有限制）spring.redis.pool.max-wait=-1# 串連池中的最大空閑串連spring.redis.pool.max-idle=8# 串連池中的最小空閑串連spring.redis.pool.min-idle=0# 連線逾時時間（毫秒）spring.redis.timeout=0

　　（3）建立Redis緩衝配置類RedisConfig，如下：

package springboot.config;import org.springframework.beans.factory.annotation.Value;import org.springframework.cache.CacheManager;import org.springframework.cache.annotation.CachingConfigurerSupport;import org.springframework.cache.annotation.EnableCaching;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 com.fasterxml.jackson.annotation.JsonAutoDetect;import com.fasterxml.jackson.annotation.PropertyAccessor;import com.fasterxml.jackson.databind.ObjectMapper;/** * Redis緩衝配置類 * @author szekinwin * */@Configuration@EnableCachingpublic class RedisConfig extends CachingConfigurerSupport{    @Value("${spring.redis.host}")    private String host;    @Value("${spring.redis.port}")    private int port;    @Value("${spring.redis.timeout}")    private int timeout;        //自訂緩衝key建置原則//    @Bean//    public KeyGenerator keyGenerator() {//        return new KeyGenerator(){//            @Override//            public Object generate(Object target, java.lang.reflect.Method method, Object... params) {//                StringBuffer sb = new StringBuffer();//                sb.append(target.getClass().getName());//                sb.append(method.getName());//                for(Object obj:params){//                    sb.append(obj.toString());//                }//                return sb.toString();//            }//        };//    }    //緩衝管理器    @Bean     public CacheManager cacheManager(@SuppressWarnings("rawtypes") RedisTemplate redisTemplate) {        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);        //設定緩衝到期時間         cacheManager.setDefaultExpiration(10000);        return cacheManager;    }    @Bean    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory){        StringRedisTemplate template = new StringRedisTemplate(factory);        setSerializer(template);//設定序列化工具        template.afterPropertiesSet();        return template;    }     private void setSerializer(StringRedisTemplate template){            @SuppressWarnings({ "rawtypes", "unchecked" })            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);     }}

　　（4）建立UserMapper，如下：

package springboot.dao;import org.apache.ibatis.annotations.Delete;import org.apache.ibatis.annotations.Insert;import org.apache.ibatis.annotations.Mapper;import org.apache.ibatis.annotations.Param;import org.apache.ibatis.annotations.Select;import org.apache.ibatis.annotations.Update;import org.springframework.cache.annotation.CacheConfig;import org.springframework.cache.annotation.CacheEvict;import org.springframework.cache.annotation.CachePut;import org.springframework.cache.annotation.Cacheable;import springboot.domain.User;@Mapper@CacheConfig(cacheNames = "users")public interface UserMapper {    @Insert("insert into user(name,age) values(#{name},#{age})")    int addUser(@Param("name")String name,@Param("age")String age);        @Select("select * from user where id =#{id}")    @Cacheable(key ="#p0")     User findById(@Param("id") String id);        @CachePut(key = "#p0")    @Update("update user set name=#{name} where id=#{id}")    void updataById(@Param("id")String id,@Param("name")String name);        //如果指定為 true，則方法調用後將立即清空所有緩衝    @CacheEvict(key ="#p0",allEntries=true)    @Delete("delete from user where id=#{id}")    void deleteById(@Param("id")String id);    }

　　@Cacheable將查詢結果緩衝到redis中，（key="#p0"）指定傳入的第一個參數作為redis的key。

　　@CachePut，指定key，將更新的結果同步到redis中

　　@CacheEvict，指定key，刪除快取資料，allEntries=true,方法調用後將立即清除緩衝

　　（5）service層與controller層跟上一篇整合一樣，啟動redis伺服器，redis伺服器的安裝與啟動可以參考之前的部落格，地址如下：

　　　　http://www.cnblogs.com/gdpuzxs/p/6623171.html

　　（6）配置log4j日誌資訊，如下：

 

## LOG4J配置log4j.rootCategory=DEBUG,stdout## 控制台輸出log4j.appender.stdout=org.apache.log4j.ConsoleAppenderlog4j.appender.stdout.layout=org.apache.log4j.PatternLayoutlog4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%L - %m%n

 

　　

 

SpringBoot使用Redis緩衝