blocks|key|766347|text|通过将以下设置添加到弹簧配置(设置usePrefix)，解决了该问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|766348|​|766349|<bean
++++id="cacheManager"
++++class="org.springframework.data.redis.cache.RedisCacheManager"
++++c:template-ref="redisTemplate">
++++<property+name="usePrefix"+value="true"+/>
</bean>|code-block|syntax|javascript|766350|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

The problem was sloved by adding following setting to spring configuration (set usePrefix):



<pre><code>&lt;bean
 id="cacheManager"
 class="org.springframework.data.redis.cache.RedisCacheManager"
 c:template-ref="redisTemplate"&gt;
 &lt;property name="usePrefix" value="true" /&gt;
&lt;/bean&gt;
</code></pre>

blocks|key|4172676|text|默认情况下，如果您没有在@Cacheable注释中指定密钥，Spring将使用SimpleKeyGenerator生成密钥。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4172677|public+class+SimpleKeyGenerator+implements+KeyGenerator+{

@Override
public+Object+generate(Object+target,+Method+method,+Object...+params)+
{
++++return+generateKey(params);
}

/**
+*+Generate+a+key+based+on+the+specified+parameters.
+*/
public+static+Object+generateKey(Object...+params)+{
++++if+(params.length+==+0)+{
++++++++return+SimpleKey.EMPTY;
++++}
++++if+(params.length+==+1)+{
++++++++Object+param+=+params[0];
++++++++if+(param+!=+null+&&+!param.getClass().isArray())+{
++++++++++++return+param;
++++++++}
++++}
++++return+new+SimpleKey(params);
}
}|code-block|syntax|javascript|4172678|由于您的两个方法(findSgsns()+and+findSgsns2())中都没有方法参数，因此它实际上将为两个方法生成相同的缓存键。|4172679|您已经找到了一个解决方案，它基本上利用了Redis+bean中的usePrefix属性，当它在redisTemplate中形成缓存键时，它实际上添加了您在@Cacheable注释中指定的值(即"test1“和"test2")。为了完整起见，我想在这里再提两个选择：|4172680|4172681|为每个方法指定您自己的密钥(注意:您可以使用Spring+EL指定您的密钥)：|ordered-list-item|4172682|4172683|@Cacheable(value+=+"test1"，key+=+"key1")公有列表findSgsns()+{}+@Cacheable(value+=+"test2"，key+=+"key2")公有列表findSgsns2()+{}|4172684|构建自定义密钥生成器，下面是示例密钥生成器，将方法名带入redis缓存密钥生成(注意:自定义密钥生成器会通过扩展CachingConfigurerSupport类自动生效)：|unordered-list-item|4172685|4172686|@Configuration公共类RedisConfig扩展CachingConfigurerSupport+{+@Bean+public+KeyGenerator+keyGenerator()+{+return+new+KeyGenerator()+{+@Override+public+Object+generate(Object+target，Method+method，Object...参数){+StringBuilder+sb+=新建StringBuilder()；sb.append(target.getClass().getName())；sb.append(method.getName())；for+(Object+obj+:+params)+{+sb.append(obj.toString())；}+return+sb.toString()；}+}；}|4172687|entityMap^0|C|A|13|I|0|0|9|S|0|W|9|1B|D|25|A|0|0|0|0|0|1K|O|0|0|0^^$0|@$1|2|3|4|5|6|7|13|8|@$9|14|A|15|B|C]|$9|16|A|17|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|18|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|19|8|@$9|1A|A|1B|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|1C|8|@$9|1D|A|1E|B|C]|$9|1F|A|1G|B|C]|$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|1J|8|@]|D|@]|E|$]]|$1|P|3|Q|5|R|7|1K|8|@]|D|@]|E|$]]|$1|S|3|-4|5|6|7|1L|8|@]|D|@]|E|$]]|$1|T|3|U|5|6|7|1M|8|@]|D|@]|E|$]]|$1|V|3|W|5|X|7|1N|8|@$9|1O|A|1P|B|C]]|D|@]|E|$]]|$1|Y|3|-4|5|6|7|1Q|8|@]|D|@]|E|$]]|$1|Z|3|10|5|6|7|1R|8|@]|D|@]|E|$]]|$1|11|3|-4|5|6|7|1S|8|@]|D|@]|E|$]]]|12|$]]

By default, Spring use <code>SimpleKeyGenerator</code> to generate the key if you don't specify it in the <code>@Cacheable</code> annotation.

<pre><code>public class SimpleKeyGenerator implements KeyGenerator {

@Override
public Object generate(Object target, Method method, Object... params) 
{
 return generateKey(params);
}

/**
 * Generate a key based on the specified parameters.
 */
public static Object generateKey(Object... params) {
 if (params.length == 0) {
 return SimpleKey.EMPTY;
 }
 if (params.length == 1) {
 Object param = params[0];
 if (param != null &amp;&amp; !param.getClass().isArray()) {
 return param;
 }
 }
 return new SimpleKey(params);
}
}
</code></pre>

As there is no method arguments in both of your methods (<code>findSgsns() and findSgsns2()</code>), it essentially will generate the same cache key for both methods.

You've already found a solution which basically utilize <code>usePrefix</code> property in the <code>redisTemplate</code> bean, which essentially add you value ( namely, "test1" and "test2") you specified in your <code>@Cacheable</code> annotation when it forms the cache key in Redis. I would like to mention 2 more alternatives for the sake of completeness here:

<ol>
<li>Specify your own key for each method (Note: you can use Spring EL to specify your keys):

<pre><code>@Cacheable(value = "test1", key = "key1")
public List&lt;String&gt; findSgsns() {
}

@Cacheable(value = "test2", key = "key2")
public List&lt;String&gt; findSgsns2() {
}
</code></pre></li>
<li>Build a custom key generator, and below is sample key generator which takes method name into redis cache key generation (Note: the custom key generator will take effect automatically by extending <code>CachingConfigurerSupport</code> class):

<pre><code>@Configuration
public class RedisConfig extends CachingConfigurerSupport {

@Bean
public KeyGenerator keyGenerator() {
 return new KeyGenerator() {
 @Override
 public Object generate(Object target, Method method, Object... params) {
 StringBuilder sb = new StringBuilder();
 sb.append(target.getClass().getName());
 sb.append(method.getName());
 for (Object obj : params) {
 sb.append(obj.toString());
 }
 return sb.toString();
 }
 };
}

}
</code></pre></li>
</ol>

I am using Spring Redis with the @Cacheable annotiation for two methods. When I call one method I am getting a result cached for the other method.

How can it happen that I get the result from the wrong cache while I configured a different cache for each method using the @Cachebale annotation?

Setup: Spring Version 4.1.6. Redis data 1.5 and Redis client 2.7.0. 

Example code:

<pre><code>@Cacheable("test1")
 public List&lt;String&gt; findSgsns() {
}

@Cacheable("test2")
 public List&lt;String&gt; findSgsns2() {
}
</code></pre>

spring redis wrong result

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我将Spring Redis与@Cacheable通知一起用于两个方法。当我调用一个方法时，我会得到另一个方法的缓存结果。当我使用@Cachebale注释为每个方法配置不同的缓存时，我怎么会从错误的缓存中获得结果呢？设置: Spring版本4.1.6。Redis data 1.5和Redis client 2.7.0。...

问spring redis错误的结果
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