[参考]redis存储商品信息，自增订单或商品id，缓存评论！

RedisKeyUtils

public class RedisKeyUtils {
	
	//商品id自增key
	public final static String ITEMS_ID = "ITEMS:ID";
	
	//商品排行榜key
	public static final String ITEMS_SELLSORT = "ITEMS:SELLSORT";

	//商品信息key
	public static String getItemKey(Long itemId){
       <span style="white-space:pre">	</span>     return "ITEMS:" + itemId;
        }

	//商品评论key
	public static String getItemCommentKey(Long itemId){
	    return"ITEMS:COMMENT" + itemId;
        }

}

po

public class Comment {
	
	private long id;
	
	//评论内容
	private String name;
	//评论时间
	private Date date;
.....

public class Items {
private Integer id;

private String name;

private Float price;

private String pic;

private Date createtime;

private String detail;

JedisProTest

public class JedisProTest {
	private ApplicationContext applicationContext;

	// 使用jackson进行json转换
	private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();

	// redis集群
	private JedisCluster jedisCluster;

	@Before
	public void init() {
		applicationContext = new ClassPathXmlApplicationContext(
				"classpath:");
		jedisCluster = (JedisCluster) applicationContext
				.getBean("jedisCluster");

	}

	// 获取商品自增id主键
	@Test
	public void testGetItemsId() {
		Long item_id = (RedisKeyUtils.ITEMS_ID);
		(item_id);
	}

	// 向hash中存储商品信息
	@Test
	public void testSaveItems() {

		((1002l), "id", "3");
		((1002l), "name", "苹果4");
		((1002l), "price", "999.9");

	}

	// 根据商品id从hash获取商品信息
	@Test
	public void testGetItemsById() {

		Map<String, String> map = (RedisKeyUtils
				.getItemKey(1002l));
		(map);
	}

	// 向list存储商品评论列表
	@Test
	public void testSaveItemsComment() throws JsonGenerationException,
			JsonMappingException, IOException {

		// 将商品评价信息转成json
		Comment comment = new Comment();
		(1l);
		("商品不错，很好！！");
		(new Date());

		// 将商品评论转成json串
		String comment_json = OBJECT_MAPPER.writeValueAsString(comment);
		(comment_json);

		// 将商品评论存储到redis
		jedisCluster
				.lpush((1001l), comment_json);

		// 获取商品评论
		List<String> lrange = (
				(1001l), 0, -1);

		for (String content : lrange) {
			// 将json数据转成java对象
			(content);
			Comment comment_obj = OBJECT_MAPPER.readValue(content,
					);
			(comment_obj);
		}
	}

	// 商品排行榜
	// 向sortedSet存储商品评论列表
	@Test
	public void testItemsSellSort() {
		
		//初始化商品销量
		//商品1001
		(RedisKeyUtils.ITEMS_SELLSORT, 100, "1001");
		//商品1002
		(RedisKeyUtils.ITEMS_SELLSORT, 200, "1002");
		
		//商品销售出增加销量
		//增加1001商品的销量
		(RedisKeyUtils.ITEMS_SELLSORT, 1, "1001");
		
		//商品销量前10名
		Set<Tuple> zrevrangeWithScores = (RedisKeyUtils.ITEMS_SELLSORT, 0, 9);
		for(Tuple content:zrevrangeWithScores){
			(()+"   "+());
			
		}
		
	}
	
	//设置key的过期时间
	@Test
	public void testSetKeyExpire() throws InterruptedException{
		
		//设置test的值为1
		("test", "1");
		(("test"));
		
		//设置生成时间为5秒，单位为秒
		("test", 5);
		//设置生成时间为5秒，单位为毫秒
//		("test", 5000);
		(5000);
		
		(("test"));
		
	}

}