{"id":202149,"date":"2025-05-10T13:26:13","date_gmt":"2025-05-10T05:26:13","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202149\/"},"modified":"2025-05-10T13:26:13","modified_gmt":"2025-05-10T05:26:13","slug":"%e5%88%a9%e7%94%a8java%e5%92%8credis%e5%ae%9e%e7%8e%b0%e5%ae%9e%e6%97%b6%e6%8e%a8%e8%8d%90%e5%8a%9f%e8%83%bd%ef%bc%9a%e5%a6%82%e4%bd%95%e4%b8%aa%e6%80%a7%e5%8c%96%e6%8e%a8%e8%8d%90%e5%95%86%e5%93%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202149\/","title":{"rendered":"\u5229\u7528Java\u548cRedis\u5b9e\u73b0\u5b9e\u65f6\u63a8\u8350\u529f\u80fd\uff1a\u5982\u4f55\u4e2a\u6027\u5316\u63a8\u8350\u5546\u54c1\u548c\u5e7f\u544a"},"content":{"rendered":"

<\/b> <\/p>\n

\u5229\u7528Java\u548cRedis\u5b9e\u73b0\u5b9e\u65f6\u63a8\u8350\u529f\u80fd\uff1a\u5982\u4f55\u4e2a\u6027\u5316\u63a8\u8350\u5546\u54c1\u548c\u5e7f\u544a<\/h1>\n

\u201c\u7eb5\u6709\u75be\u98ce\u6765\uff0c\u4eba\u751f\u4e0d\u8a00\u5f03\u201d\uff0c\u8fd9\u53e5\u8bdd\u9001\u7ed9\u6b63\u5728\u5b66\u4e60\u6570\u636e\u5e93<\/span>\u7684\u670b\u53cb\u4eec\uff0c\u4e5f\u5e0c\u671b\u5728\u9605\u8bfb\u672c\u6587\u300a\u5229\u7528Java\u548cRedis\u5b9e\u73b0\u5b9e\u65f6\u63a8\u8350\u529f\u80fd\uff1a\u5982\u4f55\u4e2a\u6027\u5316\u63a8\u8350\u5546\u54c1\u548c\u5e7f\u544a\u300b<\/span>\u540e\uff0c\u80fd\u591f\u771f\u7684\u5e2e\u52a9\u5230\u5927\u5bb6\u3002\u6211\u4e5f\u4f1a\u5728\u540e\u7eed\u7684\u6587\u7ae0\u4e2d\uff0c\u9646\u7eed\u66f4\u65b0\u6570\u636e\u5e93<\/span>\u76f8\u5173\u7684\u6280\u672f\u6587\u7ae0\uff0c\u6709\u597d\u7684\u5efa\u8bae\u6b22\u8fce\u5927\u5bb6\u5728\u8bc4\u8bba\u7559\u8a00\uff0c\u975e\u5e38\u611f\u8c22\uff01<\/p>\n

\u5229\u7528Java\u548cRedis\u5b9e\u73b0\u5b9e\u65f6\u63a8\u8350\u529f\u80fd\uff1a\u5982\u4f55\u4e2a\u6027\u5316\u63a8\u8350\u5546\u54c1\u548c\u5e7f\u544a<\/p>\n

\u5f15\u8a00\uff1a
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\u4e00\u3001\u51c6\u5907\u5de5\u4f5c\uff1a
\u5728\u5f00\u59cb\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fdd\u6211\u4eec\u5df2\u7ecf\u5b89\u88c5\u4e86Java\u5f00\u53d1\u73af\u5883\u548cRedis\u6570\u636e\u5e93\u3002Java\u5f00\u53d1\u73af\u5883\u53ef\u4ee5\u901a\u8fc7\u5b98\u65b9\u7f51\u7ad9\u4e0b\u8f7d\u5e76\u5b89\u88c5\u3002Redis\u53ef\u4ee5\u901a\u8fc7\u5b98\u65b9\u7f51\u7ad9\u4e0b\u8f7d\u5e76\u6839\u636e\u5b98\u65b9\u6587\u6863\u8fdb\u884c\u5b89\u88c5\u548c\u914d\u7f6e\u3002<\/p>\n

\u4e8c\u3001\u521b\u5efaRedis\u8fde\u63a5\uff1a
\u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u5efa\u7acb\u4e0eRedis\u6570\u636e\u5e93\u7684\u8fde\u63a5\u3002\u901a\u8fc7\u4f7f\u7528Jedis\u5e93\uff0c\u6211\u4eec\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u4e0eRedis\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n

import redis.clients.jedis.Jedis;\n\npublic class RedisConnection {\n    private static final String HOST = \"localhost\";\n    private static final int PORT = 6379;\n    \n    public static Jedis getConnection() {\n        Jedis jedis = new Jedis(HOST, PORT);\n        return jedis;\n    }\n}<\/pre>\n
\u4e09\u3001\u6570\u636e\u6a21\u578b\uff1a
\u5728\u6211\u4eec\u5f00\u59cb\u6784\u5efa\u63a8\u8350\u7cfb\u7edf\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u5b9a\u4e49\u4e00\u4e9b\u6570\u636e\u6a21\u578b\u3002\u5728\u672c\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u7528\u6237ID\u548c\u5546\u54c1ID\u4f5c\u4e3a\u552f\u4e00\u6807\u8bc6\u7b26\u3002\u6211\u4eec\u5c06\u4ee5\u5b57\u7b26\u4e32\u7684\u5f62\u5f0f\u5b58\u50a8\u8fd9\u4e9bID\u3002\u540c\u65f6\uff0c\u6211\u4eec\u4e5f\u9700\u8981\u4e00\u4e9b\u8f85\u52a9\u6570\u636e\u7ed3\u6784\uff0c\u4f8b\u5982\u96c6\u5408\u548c\u6709\u5e8f\u96c6\u5408\uff0c\u7528\u4e8e\u5b58\u50a8\u7528\u6237\u7684\u884c\u4e3a\u6570\u636e\u548c\u8ba1\u7b97\u63a8\u8350\u7ed3\u679c\u3002<\/p>\n
import redis.clients.jedis.Jedis;\n\npublic class UserModel {\n    private static final String USER_KEY_PREFIX = \"user:\";\n    private static final String ITEM_KEY_PREFIX = \"item:\";\n    private static final String ACTION_KEY_PREFIX = \"action:\";\n    private static final String RECOMMENDATION_KEY_PREFIX = \"recommendation:\";\n    \n    public void addUser(String userId) {\n        Jedis jedis = RedisConnection.getConnection();\n        jedis.set(USER_KEY_PREFIX + userId, \"1\");\n    }\n    \n    public void removeUser(String userId) {\n        Jedis jedis = RedisConnection.getConnection();\n        jedis.del(USER_KEY_PREFIX + userId);\n    }\n    \n    public void addItem(String itemId) {\n        Jedis jedis = RedisConnection.getConnection();\n        jedis.set(ITEM_KEY_PREFIX + itemId, \"1\");\n    }\n    \n    public void removeItem(String itemId) {\n        Jedis jedis = RedisConnection.getConnection();\n        jedis.del(ITEM_KEY_PREFIX + itemId);\n    }\n    \n    public void addAction(String userId, String itemId) {\n        Jedis jedis = RedisConnection.getConnection();\n        jedis.sadd(ACTION_KEY_PREFIX + userId, itemId);\n    }\n    \n    public void removeAction(String userId, String itemId) {\n        Jedis jedis = RedisConnection.getConnection();\n        jedis.srem(ACTION_KEY_PREFIX + userId, itemId);\n    }\n    \n    public void addRecommendation(String userId, String itemId, double score) {\n        Jedis jedis = RedisConnection.getConnection();\n        jedis.zadd(RECOMMENDATION_KEY_PREFIX + userId, score, itemId);\n    }\n    \n    public void removeRecommendation(String userId, String itemId) {\n        Jedis jedis = RedisConnection.getConnection();\n        jedis.zrem(RECOMMENDATION_KEY_PREFIX + userId, itemId);\n    }\n}<\/pre>\n
\u56db\u3001\u8ba1\u7b97\u63a8\u8350\u7ed3\u679c\uff1a
\u63a8\u8350\u7cfb\u7edf\u7684\u6838\u5fc3\u662f\u8ba1\u7b97\u63a8\u8350\u7ed3\u679c\u3002\u5728\u672c\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u4f7f\u7528\u57fa\u4e8e\u7528\u6237\u884c\u4e3a\u7684\u534f\u540c\u8fc7\u6ee4\u7b97\u6cd5\u6765\u8ba1\u7b97\u63a8\u8350\u7ed3\u679c\u3002\u6211\u4eec\u5c06\u6839\u636e\u7528\u6237\u7684\u884c\u4e3a\u8bb0\u5f55\u6765\u8ba1\u7b97\u548c\u63a8\u8350\u76f8\u4f3c\u5546\u54c1\u7ed9\u7528\u6237\u3002<\/p>\n
import redis.clients.jedis.Jedis;\nimport redis.clients.jedis.Tuple;\nimport java.util.Set;\n\npublic class RecommendationModel {\n    private static final String ACTION_KEY_PREFIX = \"action:\";\n    private static final String RECOMMENDATION_KEY_PREFIX = \"recommendation:\";\n    \n    public void calculateRecommendations(String userId) {\n        Jedis jedis = RedisConnection.getConnection();\n        \n        \/\/ \u83b7\u53d6\u7528\u6237\u7684\u884c\u4e3a\u8bb0\u5f55\n        Set<String> actionItems = jedis.smembers(ACTION_KEY_PREFIX + userId);\n        \n        \/\/ \u83b7\u53d6\u4e0e\u7528\u6237\u884c\u4e3a\u76f8\u5173\u7684\u5546\u54c1\n        for (String itemId : actionItems) {\n            Set<Tuple> similarItems = jedis.zrangeWithScores(RECOMMENDATION_KEY_PREFIX + itemId, 0, 4);\n            \n            \/\/ \u5c06\u76f8\u4f3c\u5546\u54c1\u6dfb\u52a0\u5230\u63a8\u8350\u7ed3\u679c\u4e2d\n            for (Tuple tuple : similarItems) {\n                String recommendedItemId = tuple.getElement();\n                double score = tuple.getScore();\n                \n                UserModel userModel = new UserModel();\n                userModel.addRecommendation(userId, recommendedItemId, score);\n            }\n        }\n    }\n}<\/pre>\n
\u4e94\u3001\u5b8c\u5584\u63a8\u8350\u7cfb\u7edf\uff1a
\u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u7f16\u5199\u4e00\u4e2a\u6d4b\u8bd5\u7c7b\u6765\u5b8c\u5584\u63a8\u8350\u7cfb\u7edf\u3002\u6211\u4eec\u5c06\u6a21\u62df\u4e00\u4e9b\u7528\u6237\u7684\u884c\u4e3a\u548c\u5546\u54c1\u6570\u636e\uff0c\u5e76\u8ba1\u7b97\u63a8\u8350\u7ed3\u679c\u3002<\/p>\n
public class RecommendationSystemTest {\n    public static void main(String[] args) {\n        UserModel userModel = new UserModel();\n        \n        \/\/ \u6dfb\u52a0\u4e00\u4e9b\u7528\u6237\u548c\u5546\u54c1\u6570\u636e\n        userModel.addUser(\"user1\");\n        userModel.addUser(\"user2\");\n        \n        userModel.addItem(\"item1\");\n        userModel.addItem(\"item2\");\n        userModel.addItem(\"item3\");\n        \n        RecommendationModel recommendationModel = new RecommendationModel();\n        \n        \/\/ \u6a21\u62df\u7528\u6237\u7684\u884c\u4e3a\n        userModel.addAction(\"user1\", \"item1\");\n        userModel.addAction(\"user1\", \"item2\");\n        \n        userModel.addAction(\"user2\", \"item2\");\n        userModel.addAction(\"user2\", \"item3\");\n        \n        \/\/ \u8ba1\u7b97\u63a8\u8350\u7ed3\u679c\n        recommendationModel.calculateRecommendations(\"user1\");\n        recommendationModel.calculateRecommendations(\"user2\");\n        \n        \/\/ \u6253\u5370\u63a8\u8350\u7ed3\u679c\n        Jedis jedis = RedisConnection.getConnection();\n        Set<Tuple> recommendedItemsUser1 = jedis.zrangeWithScores(\"recommendation:user1\", 0, -1);\n        Set<Tuple> recommendedItemsUser2 = jedis.zrangeWithScores(\"recommendation:user2\", 0, -1);\n        \n        System.out.println(\"\u7528\u62371\u7684\u63a8\u8350\u7ed3\u679c\uff1a\");\n        for (Tuple tuple : recommendedItemsUser1) {\n            System.out.println(tuple.getElement() + \" - \" + tuple.getScore());\n        }\n        \n        System.out.println(\"\u7528\u62372\u7684\u63a8\u8350\u7ed3\u679c\uff1a\");\n        for (Tuple tuple : recommendedItemsUser2) {\n            System.out.println(tuple.getElement() + \" - \" + tuple.getScore());\n        }\n    }\n}<\/pre>\n
\u603b\u7ed3\uff1a
\u901a\u8fc7\u4f7f\u7528Java\u548cRedis\uff0c\u6211\u4eec\u53ef\u4ee5\u5f88\u5bb9\u6613\u5730\u5b9e\u73b0\u4e00\u4e2a\u57fa\u4e8e\u7528\u6237\u884c\u4e3a\u7684\u4e2a\u6027\u5316\u63a8\u8350\u7cfb\u7edf\u3002\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u7528\u6237\u7684\u884c\u4e3a\u8bb0\u5f55\u6765\u8ba1\u7b97\u548c\u63a8\u8350\u76f8\u4f3c\u5546\u54c1\u7ed9\u7528\u6237\u3002\u6b64\u5916\uff0c\u6211\u4eec\u8fd8\u53ef\u4ee5\u4f7f\u7528Redis\u7684\u5176\u4ed6\u529f\u80fd\u6765\u589e\u5f3a\u63a8\u8350\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u4e2a\u6027\u5316\u63a8\u8350\u7cfb\u7edf\u6709\u52a9\u4e8e\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u548c\u5e7f\u544a\u6548\u679c\uff0c\u5bf9\u4e8e\u7535\u5546\u5e73\u53f0\u548c\u5e7f\u544a\u884c\u4e1a\u6765\u8bf4\u5177\u6709\u91cd\u8981\u7684\u610f\u4e49\u3002<\/p>\n
\n
\n <\/dt>\n
\n   \u5982\u4f55\u901a\u8fc7Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u54c8\u5e0c\u8868\u529f\u80fd\n <\/dd>\n<\/dl>\n
\n
\n <\/dt>\n
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\u5229\u7528Java\u548cRedis\u5b9e\u73b0\u5b9e\u65f6...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-202149","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=202149"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202149\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}