1.maven引入相关依赖
1 | org.springframework.bootspring-boot-starter-data-redisorg.apache.commonscommons-pool22.11.1com.fasterxml.jackson.corejackson-databindorg.projectlomboklomboktrueorg.springframework.bootspring-boot-starter-testtest |
2.配置redis
application.yml
1 2 3 4 5 6 7 8 9 10 11 12 13 | spring: # 配置redis redis: host: 192.168 .***.*** port: 6379 password: ****** lettuce: pool: max-active: 8 # 连接池最大连接数(使用负值表示没有限制) max-idle: 8 # 连接池中的最大空闲连接 max-wait: 100 # 连接池最大阻塞等待时间(使用负值表示没有限制) min-idle: 0 # 连接池中的最小空闲连接 database: 0 # redis数据库索引(默认为 0 ) |
3.配置序列化
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 | package com.example.config; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.redis.connection.RedisConnectionFactory; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer; import org.springframework.data.redis.serializer.RedisSerializer; /** * Redis 序列化方式配置 * */ @Configuration public class RedisConfig { @Bean public RedisTemplate redisTemplate(RedisConnectionFactory factory) { // 创建RedisTemplate对象 RedisTemplate template = new RedisTemplate(); // 配置连接工厂 template.setConnectionFactory(factory); // json方式序列化对象 GenericJackson2JsonRedisSerializer jsonRedisSerializer = new GenericJackson2JsonRedisSerializer(); // key采用String的序列化方式 template.setKeySerializer(RedisSerializer.string()); // hash的key也采用String的序列化方式 template.setHashKeySerializer(RedisSerializer.string()); // value序列化方式采用jackson template.setValueSerializer(jsonRedisSerializer); // hash的value序列化方式采用jackson template.setHashValueSerializer(jsonRedisSerializer); return template; } } |
4.测试类中进行测试
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | package com.example; import com.example.entity.User; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.core.StringRedisTemplate; @SpringBootTest class SpringDataRedisTestApplicationTests { @Autowired private RedisTemplate redisTemplate; @Autowired private StringRedisTemplate stringRedisTemplate; private static final ObjectMapper objectMapper = new ObjectMapper(); /** * 测试redis的String类型 */ @Test void testString() { redisTemplate.opsForValue().set( "name" , "minqiliang" ); System.out.println(redisTemplate.opsForValue().get( "name" )); } /** * 使用StringRedisTemplate操作redis(需要手动进行序列化和反序列化) * @throws JsonProcessingException */ @Test void testString2() throws JsonProcessingException { // 创建一个对象 User user = new User( "001" , "minqiliang" , 18 ); // 由于StringRedisTemplate默认使用的是String的序列化器,所以这里需要将对象转换成json字符串 String json = objectMapper.writeValueAsString(user); // 存入redis stringRedisTemplate.opsForValue().set( "user:001" , json); // 从redis中取出数据 String s = stringRedisTemplate.opsForValue().get( "user:001" ); // 将json字符串转换成对象 User u = objectMapper.readValue(s, User. class ); System.out.println(u); } @Test void testHash() { // 存入redis redisTemplate.opsForHash().put( "user:002" , "id" , "002" ); redisTemplate.opsForHash().put( "user:002" , "name" , "张三" ); redisTemplate.opsForHash().put( "user:002" , "age" , 18 ); // 获取对应的key的所有值 System.out.println(redisTemplate.opsForHash().entries( "user:002" )); System.out.println( "====================================" ); // 获取对应的key的某个值 System.out.println(redisTemplate.opsForHash().get( "user:002" , "id" )); System.out.println(redisTemplate.opsForHash().get( "user:002" , "name" )); System.out.println(redisTemplate.opsForHash().get( "user:002" , "age" )); } } |
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