创建springboot项目

在NoSQL中选择Redis

项目目录

pom.xml中还需要加入下面的jar包

org.springframework.boot spring-boot-starter-json

在application.properties文件中添加Redis服务器信息

spring.redis.host=192.168.5.132spring.redis.port=6379

剩下4个test类，我直接以源码的方式粘出来，里面有些代码是非必须的，我保留了测试的验证过程，所以里面会有冗余代码。（这些代码在我GitHub上的练习项目中也有）

package com.myspringboot.redis;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.context.ConfigurableApplicationContext;@SpringBootApplicationpublic class DemoApplication { public static void main(String[] args) { ConfigurableApplicationContext configurableApplicationContext = SpringApplication.run(DemoApplication.class, args); RedisTest redisTest = configurableApplicationContext.getBean(RedisTest.class); redisTest.testRedis(); }}package com.myspringboot.redis;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.StringRedisTemplate;import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;@Configurationpublic class MyTemplate { @Bean public StringRedisTemplate getMyTemplate(RedisConnectionFactory redisConnectionFactory){ StringRedisTemplate stringRedisTemplate = new StringRedisTemplate(redisConnectionFactory); stringRedisTemplate.setHashValueSerializer(new Jackson2JsonRedisSerializer<Object>(Object.class)); return stringRedisTemplate; }}package com.myspringboot.redis;import com.fasterxml.jackson.databind.ObjectMapper;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.data.redis.connection.Message;import org.springframework.data.redis.connection.MessageListener;import org.springframework.data.redis.connection.RedisConnection;import org.springframework.data.redis.core.HashOperations;import org.springframework.data.redis.core.RedisTemplate;import org.springframework.data.redis.core.StringRedisTemplate;import org.springframework.data.redis.hash.Jackson2HashMapper;import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;import org.springframework.stereotype.Component;import java.util.Map;@Componentpublic class RedisTest { @Autowired RedisTemplate redisTemplate; @Autowired StringRedisTemplate stringRedisTemplate; @Autowired ObjectMapper objectMapper; // 自定义模板 @Autowired @Qualifier("getMyTemplate") StringRedisTemplate myStringRedisTemplate; public void testRedis() { //redis中直接查看时，乱码 redisTemplate.opsForValue().set("key1", "hello1"); System.out.println(redisTemplate.opsForValue().get("key1")); //redis中直接查看时，正常 stringRedisTemplate.opsForValue().set("key2", "hello2"); System.out.println(stringRedisTemplate.opsForValue().get("key2")); RedisConnection connection = redisTemplate.getConnectionFactory().getConnection(); connection.set("key3".getBytes(), "hello3".getBytes()); System.out.println(new String(connection.get("key3".getBytes()))); HashOperations<String, Object, Object> hash = stringRedisTemplate.opsForHash(); hash.put("key4", "name", "张三"); hash.put("key4", "age", "18"); System.out.println(hash.get("key4", "name")); System.out.println(hash.entries("key4")); stringRedisTemplate.setHashValueSerializer(new Jackson2JsonRedisSerializer<Object>(Object.class)); Jackson2HashMapper jackson2HashMapper = new Jackson2HashMapper(objectMapper, false);// true 扁平化（将对象中的参数展开） User user = new User(); user.setId(123); user.setName("zhangsan"); stringRedisTemplate.opsForHash().putAll("key5", jackson2HashMapper.toHash(user)); Map map = stringRedisTemplate.opsForHash().entries("key5"); User user1 = objectMapper.convertValue(map, User.class); System.out.println(user1.getId()); System.out.println(user1.getName()); myStringRedisTemplate.opsForHash().putAll("key6", jackson2HashMapper.toHash(user)); Map map1 = myStringRedisTemplate.opsForHash().entries("key6"); User user2 = objectMapper.convertValue(map, User.class); System.out.println(user2.getId()); System.out.println(user2.getName()); //发布订阅 myStringRedisTemplate.convertAndSend("qunliao", "hello"); RedisConnection connection1 = myStringRedisTemplate.getConnectionFactory().getConnection(); connection1.subscribe(new MessageListener() { @Override public void onMessage(Message message, byte[] bytes) { byte[] body = message.getBody(); System.out.println(new String(body)); } }, "qunliao".getBytes()); while (true){ myStringRedisTemplate.convertAndSend("qunliao", "hello"); try { Thread.sleep(3000); } catch (InterruptedException e) { e.printStackTrace(); } } }}package com.myspringboot.redis;public class User { private int id; private String name; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; }}

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