修改库存

src/main/java/com/chaozhanggui/system/cashierservice/config/RedisConfiguration.java

@@ -0,0 +1,41 @@
+package com.chaozhanggui.system.cashierservice.config;
+
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+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.core.StringRedisTemplate;
+
+import java.net.UnknownHostException;
+
+/**
+ * Standard Redis configuration.
+ */
+@Configuration
+public  class RedisConfiguration {
+
+    @Bean
+    //ConditionalOnMissingBean 当没有名称为redisTemplate的对象被创建时，
+    //才去创建redisTemplate对象
+    @ConditionalOnMissingBean(name = "redisTemplate")
+    public RedisTemplate<String, Object> redisTemplate(
+            RedisConnectionFactory redisConnectionFactory)
+            throws UnknownHostException {
+        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
+        template.setConnectionFactory(redisConnectionFactory);
+        return template;
+    }
+
+    @Bean
+    @ConditionalOnMissingBean(StringRedisTemplate.class)
+    //StringRedisTemplate继承自RedisTemplate<String, String>
+    public StringRedisTemplate stringRedisTemplate(
+            RedisConnectionFactory redisConnectionFactory)
+            throws UnknownHostException {
+        StringRedisTemplate template = new StringRedisTemplate();
+        template.setConnectionFactory(redisConnectionFactory);
+        return template;
+    }
+
+}