微服务 第九章 springboot 使用NoSql数据库:redis
1、pom.xml添加依赖包
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-redis</artifactId>
<version>1.3.2.RELEASE</version>
</dependency>
2、在application.properties中配置redis:
# REDIS (RedisProperties) # Redis数据库索引(默认为0) spring.redis.database=0 # Redis服务器地址 spring.redis.host=localhost # Redis服务器连接端口 spring.redis.port=6379 # Redis服务器连接密码(默认为空) spring.redis.password= # 连接池最大连接数(使用负值表示没有限制) spring.redis.pool.max-active=8 # 连接池最大阻塞等待时间(使用负值表示没有限制) spring.redis.pool.max-wait=-1 # 连接池中的最大空闲连接 spring.redis.pool.max-idle=8 # 连接池中的最小空闲连接 spring.redis.pool.min-idle=0 # 连接超时时间(毫秒) spring.redis.timeout=0
3、配置类:
@Configuration
public class RedisConfig {
@Bean
JedisConnectionFactory jedisConnectionFactory() {
return new JedisConnectionFactory();
}
@Bean
public RedisTemplate<String, Primary> redisTemplate(RedisConnectionFactory factory) {
RedisTemplate<String, Primary> template = new RedisTemplate<String, Primary>();
template.setConnectionFactory(jedisConnectionFactory());
template.setKeySerializer(new StringRedisSerializer());
template.setValueSerializer(new RedisObjectSerializer());
return template;
}
}
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);
}
}
4、添加controller类测试:
@RestController
@RequestMapping(value="redisprimary")
public class PrimaryController {
@Autowired
PrimaryRepository repository;
@Autowired
private StringRedisTemplate stringRedisTemplate;
@Autowired
private RedisTemplate<String, Primary> redisTemplate;
@RequestMapping("getall")
public List<Primary> getAll(){
stringRedisTemplate.opsForValue().set("stringset", "111");
System.out.println(stringRedisTemplate.opsForValue().get("stringset"));
System.out.println(redisTemplate.opsForValue().get("yy"));
List<Primary> primaryList=repository.findAll();
for (Primary p:primaryList){
System.out.println(p);
}
Primary primary=primaryList.get(0);
redisTemplate.opsForValue().set("yy", primary);
System.out.println(primary);
System.out.println(redisTemplate.opsForValue().get("yy"));
return primaryList;
}
}
5、注意:
因为向redis保存对象,需要对象时序列化对象,故需要实现接口Serializable。
运行项目测试的时候,必须启动redis

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