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<!doctype html>
<html class="no-js" lang="en">
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<meta charset="utf-8" />
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<title>
Spring-data-redis 的使用记录 - TangJiujun's Techblog
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<h1>Spring-data-redis 的使用记录</h1>
<div class="read-more clearfix">
<span class="date">2016/1/9</span>
<span>posted in </span>
<span class="posted-in"><a href='Spring%20Boot.html'>Spring Boot</a></span>
<span class="comments">
<a href="http://blog.tangjiujun.com/spring-data-redis-usage.html#disqus_thread">comments</a>
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<h3 id="toc_0">开始向导</h3>
<p>添加 dependency <code>spring-boot-starter-redis</code>，它默认使用 <code>jedis</code>（还支持 JRedis，SRP 和 Lettuce）<br/>
一个简单的 Hash 示例：</p>
<pre><code class="language-java">@SpringBootApplication
public class RedisDemo implements CommandLineRunner {
@Autowired
private StringRedisTemplate stringRedisTemplate;
public static void main(String[] args) {
SpringApplication.run(RedisDemo.class).close();
}
public void run(String... args) throws Exception {
BoundHashOperations<String, String, String> ops = stringRedisTemplate.boundHashOps("com.foo");
ops.put("name", "bar");
ops.put("sex", "man");
System.out.println(ops.entries()); // 打印结果：{name=bar, sex=man}
}
}
</code></pre>
<span id="more"></span><!-- more -->
<h3 id="toc_1">RedisTemplate</h3>
<p>RedisConnection 负责提供底层的数据操作；而 RedisTemplate 提供对 Redis 数据操作统一的抽象实现，并负责序列化存取的数据以及和 Redis 的连接管理。<br/><br/>
StringRedisTemplate 继承自 RedisTemplate，用于操作基于字符串的存取操作。</p>
<p>针对 Redis 不同的存取类型，RedisTemplate 提供了不同的操作视图。</p>
<pre><code class="language-text">ValueOperations
ListOperations
SetOperations
ZSetOperations
HashOperations
HyperLogLogOperations
</code></pre>
<p>spring-data-redis 同时提供了绑定 key 的操作视图，省去每次都需要填写 key 的麻烦。</p>
<pre><code class="language-text">BoundValueOperations
BoundListOperations
BoundSetOperations
BoundZSetOperations
BoundHashOperations
</code></pre>
<h3 id="toc_2">RedisSerializer</h3>
<p>RedisTemplate 默认采用 JdkSerializationRedisSerializer 序列化，提供的序列化类有：</p>
<ul>
<li>JdkSerializationRedisSerializer</li>
<li>StringRedisSerializer</li>
<li>OxmSerializer</li>
<li>JacksonJsonRedisSerializer</li>
<li>Jackson2JsonRedisSerializer</li>
</ul>
<p>我们也可以自己实现 RedisSerializer 接口的 serialize 和 deserialize 方法，来实现对自定义对象的序列化和反序列化存取。</p>
<pre><code class="language-java">@SpringBootApplication
public class RedisDemo implements CommandLineRunner {
@Autowired
private RedisTemplate redisTemplate;
public static void main(String[] args) {
SpringApplication.run(RedisDemo.class).close();
}
public void run(String... args) throws Exception {
redisTemplate.setValueSerializer(new DomainSerializer());
BoundValueOperations<String, Person> ops = redisTemplate.boundValueOps("foo.diy");
ops.getAndSet(new Person("foo"));
System.out.println(ops.get());
}
}
class Person {
private final String name;
public Person(String name) {
this.name = name;
}
public String getName() {
return name;
}
@Override
public String toString() {
return "Domain{" +
"name='" + name + '\'' +
'}';
}
}
class DomainSerializer implements RedisSerializer<Person> {
@Override
public byte[] serialize(Person person) throws SerializationException {
return person.getName().getBytes();
}
@Override
public Person deserialize(byte[] bytes) throws SerializationException {
return new Person(new String(bytes));
}
}
</code></pre>
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