Spring Boot + Redis 实现Shiro集群

　　为实现Web应用的分布式集群部署，要解决登录session的统一。本文利用shiro做权限控制，redis做session存储，结合spring boot快速配置实现session共享。

　　1、引入相关依赖

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-data-redis</artifactId>

        </dependency>
        
             <dependency>

            <groupId>org.apache.shiro</groupId>

            <artifactId>shiro-spring</artifactId>

            <version>1.3.2</version>

        </dependency>        

　　2、Redis相关

　　2.1.redis配置

　　spring.redis.host=localhost
　　spring.redis.port=6379
　　spring.redis.password=

　　2.2.redis缓存的对象必须序列化，通用序列化　

import org.springframework.core.convert.converter.Converter;

import org.springframework.core.serializer.support.DeserializingConverter;

import org.springframework.core.serializer.support.SerializingConverter;

import org.springframework.data.redis.serializer.RedisSerializer;

import org.springframework.data.redis.serializer.SerializationException;


/**



redis序列化对象


*/


public class RedisObjectSerializer implements RedisSerializer<Object> {


private Converter<Object, byte[]> serializer = new SerializingConverter();


private Converter<byte[], Object> deserializer = new DeserializingConverter();


static final byte[] EMPTY_ARRAY = new byte[0];

public Object deserialize(byte[] bytes) {


if (isEmpty(bytes)) {


return null;



}

try {


return deserializer.convert(bytes);


} catch (Exception ex) {


throw new SerializationException("Cannot deserialize", ex);


}


}


public byte[] serialize(Object object) {


if (object == null) {


return EMPTY_ARRAY;


}


try {


return serializer.convert(object);


} catch (Exception ex) {


return EMPTY_ARRAY;


}


}


private boolean isEmpty(byte[] data) {


return (data == null || data.length == 0);


}


}