{"id":201582,"date":"2025-05-10T08:16:23","date_gmt":"2025-05-10T00:16:23","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201582\/"},"modified":"2025-05-10T08:16:23","modified_gmt":"2025-05-10T00:16:23","slug":"%e4%bd%bf%e7%94%a8redisatomicinteger%e8%ae%a1%e6%95%b0%e5%87%ba%e7%8e%b0%e5%b0%91%e8%ae%a1%e9%97%ae%e9%a2%98%e5%8f%8a%e8%a7%a3%e5%86%b3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201582\/","title":{"rendered":"\u4f7f\u7528RedisAtomicInteger\u8ba1\u6570\u51fa\u73b0\u5c11\u8ba1\u95ee\u9898\u53ca\u89e3\u51b3"},"content":{"rendered":"

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

\u4f7f\u7528RedisAtomicInteger\u8ba1\u6570\u51fa\u73b0\u5c11\u8ba1\u95ee\u9898\u53ca\u89e3\u51b3<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7\u300a\u4f7f\u7528RedisAtomicInteger\u8ba1\u6570\u51fa\u73b0\u5c11\u8ba1\u95ee\u9898\u53ca\u89e3\u51b3\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230RedisAtomicInteger\u8ba1\u6570\u3001\u5c11\u8ba1<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0\u6570\u636e\u5e93<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

RedisAtomicInteger\u8ba1\u6570\u51fa\u73b0\u5c11\u8ba1<\/h2>\n

\u6700\u8fd1\u5de5\u4f5c\u4e2d\u9047\u5230\u4e86\u8fd9\u6837\u4e00\u4e2a\u573a\u666f<\/p>\n

\u540c\u4e00\u4e2a\u5916\u90e8\u5355\u53f7\u751f\u6210\u4e86\u591a\u5f20\u51fa\u5e93\u5355\uff0c\u7b49\u5f85\u6240\u6709\u76f8\u5173\u7684\u51fa\u5e93\u5355\u90fd\u51fa\u5e93\u6210\u529f\u540e\u56de\u590d\u6210\u529f\u6d88\u606f\u5916\u90e8\u7cfb\u7edf\u8c03\u7528\u65b9\u3002\u56e0\u4e3a\u662f\u5206\u5e03\u5f0f\u5e03\u7cfb\u7edf\uff0c\u6211\u4f7f\u7528\u4e86RedisAtomicInteger\u8ba1\u6570\u5668\u6765\u5224\u65ad\u51fa\u5e93\u5355\u662f\u5426\u5168\u90e8\u5b8c\u6210\uff0c\u6570\u91cf\u8fbe\u6210\u65f6\u56de\u590d\u6210\u529f\u6d88\u606f\u7ed9\u5916\u90e8\u7cfb\u7edf\u8c03\u7528\u65b9\u3002<\/p>\n

\u5728\u672c\u5730\u6d4b\u8bd5\u548c\u6d4b\u8bd5\u73af\u5883\u6d4b\u8bd5\u65f6\u90fd\u6ca1\u6709\u53d1\u73b0\u95ee\u9898\uff0c\u5230\u4e86\u751f\u4ea7\u73af\u5883\u540e\uff0c\u53d1\u73b0\u5076\u5c14\u51fa\u73b0\u6240\u6709\u51fa\u5e93\u5355\u90fd\u5df2\u7ecf\u51fa\u5e93\uff0c\u4f46\u6ca1\u6709\u56de\u590d\u6d88\u606f\u7ed9\u8c03\u7528\u65b9\uff0c\u5982\uff1a\u51fa\u5e93\u535515\u5f20\uff0c\u4f46\u8ba1\u6570\u5668\u53ea\u670914\u3002<\/p>\n

\u5206\u6790<\/h3>\n

\u5f00\u59cb\u4ee5\u4e3a\u662f\u6709\u5355\u636e\u6f0f\u8ba1\u7b97\u4e86\uff0c\u901a\u8fc7\u65e5\u5fd7\u5206\u6790\uff0c\u53d1\u73b0\u6240\u6709\u7684\u51fa\u5e93\u5355\u90fd\u7edf\u8ba1\u8fdb\u53bb\u4e86\u3002<\/p>\n

\u7136\u540e\u901a\u8fc7\u589e\u52a0\u6253\u5f00\u8c03\u8bd5\u65e5\u5fd7\uff0c\u53d1\u73b0\u6700\u5f00\u59cb\u76842\u5f20\u51fa\u5e93\u5355\u7edf\u8ba1\u540e\u7684\u503c\u90fd\u4e3a1\uff0c\u5c11\u4e861\u4e2a\u3002<\/p>\n

\u539f\u56e0<\/h3>\n

redis\u7684increment\u662f\u539f\u5b50\u6027\uff0c\u4f46new RedisAtomicInteger\u65f6\u4f1a\u8c03\u7528set\u65b9\u6cd5\u6765\u8bbe\u7f6e\u521d\u59cb\u503c\uff0cset\u65b9\u6cd5\u662f\u53ef\u4ee5\u88ab\u540e\u9762\u7684\u65b9\u6cd5\u8986\u76d6\u7684\u3002<\/p>\n

edisAtomicInteger redisAtomicInt = new RedisAtomicInteger(countKey, redisTemplate.getConnectionFactory());\n  \n\/\/ spring-data-redis-1.8.13\u539f\u7801\npublic RedisAtomicInteger(String redisCounter, RedisConnectionFactory factory) {\n        this(redisCounter, factory, null);\n    }\n  \nprivate RedisAtomicInteger(String redisCounter, RedisConnectionFactory factory, Integer initialValue) {\n        RedisTemplate\n   \n     redisTemplate = new RedisTemplate\n    \n     ();         redisTemplate.setKeySerializer(new StringRedisSerializer());         redisTemplate.setValueSerializer(new GenericToStringSerializer\n     \n      (Integer.class));         redisTemplate.setExposeConnection(true);         redisTemplate.setConnectionFactory(factory);         redisTemplate.afterPropertiesSet();           this.key = redisCounter;         this.generalOps = redisTemplate;         this.operations = generalOps.opsForValue();           if (initialValue == null) {             if (this.operations.get(redisCounter) == null) {                 set(0);             }         } else {             set(initialValue);         }     }\n     \n    \n   <\/pre>\n
\u89e3\u51b3\u65b9\u6cd5<\/h3>\n
\u7f51\u4e0a\u770b\u5230\u7684\u90fd\u662f\u52a0\u4e1a\u52a1\u9501\u6216\u5347\u7ea7spring-data-redis\u7248\u672c\u3002<\/p>\n
\u4f46\u8001\u9879\u76ee\u5347\u7ea7spring-data-redis\u7248\u672c\u53ef\u80fd\u4f1a\u5f15\u8d77\u517c\u5bb9\u6027\u95ee\u9898\uff0c\u52a0\u4e1a\u52a1\u9501\u53c8\u589e\u52a0\u4e86\u4ee3\u7801\u590d\u6742\u5ea6\u3002<\/p>\n
\u90a3\u6709\u6ca1\u6709\u66f4\u7b80\u5355\u65b9\u6cd5\u5462\uff0c\u6709\u3002\u7adf\u7136\u662fset\u65b9\u6cd5\u5bfc\u81f4\u7684\u503c\u8986\u76d6\uff0c\u90a3\u5c31\u4e0d\u8d70set\u65b9\u6cd5\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
\u589e\u52a0\u4e0b\u9762\u4e00\u884c\u4ee3\u7801\u89e3\u51b3\u95ee\u9898<\/p>\n
\/\/ Fixed bug \u524d\u51e0\u4e2a\u6570\u7d2f\u8ba1\u91cd\u590d\u95ee\u9898\nredisTemplate.opsForValue().setIfAbsent(countKey, 0);<\/pre>\n
\u4f7f\u7528RedisAtomicInteger\u4e2d\u95f4\u9047\u5230\u7684\u95ee\u9898<\/h2>\n
RedisAtomicInteger\u662fspringdata\u4e2d\u5728redis\u7684\u57fa\u7840\u4e0a\u5b9e\u73b0\u7684\u539f\u5b50\u8ba1\u6570\u5668\uff0c\u5728\u4ee5\u4e0bmaven\u4f9d\u8d56\u5305\u4e2d:<\/p>\n
\n   \n    org.springframework.data\n        \n\n   \n    spring-data-redis\n    <\/pre>\n
\u5f53\u4f7f\u7528RedisAtomicInteger(String redisCounter, RedisOperations template,…)\u51fd\u6570\u6784\u5efa\u5b9e\u4f8b\u7684\u60c5\u51b5\u4e0b\uff0c\u5728\u4f7f\u7528INCR\u6216\u8005DECR\u65f6\uff0c\u4f1a\u9047\u5230ERR value is not an integer or out of range\u9519\u8bef\uff0c\u663e\u793a\u64cd\u4f5c\u7684\u6570\u636e\u4e0d\u662f\u4e00\u4e2a\u6574\u6570\u6216\u8005\u8d85\u51fa\u8303\u56f4\u3002 <\/p>\n
\u53c2\u8003redis\u547d\u4ee4\u8bf4\u660e\u6211\u4eec\u77e5\u9053incr\u5bf9\u64cd\u4f5c\u503c\u7684\u8981\u6c42<\/h3>\n
\u8fd9\u662f\u4e00\u4e2a\u9488\u5bf9\u5b57\u7b26\u4e32\u7684\u64cd\u4f5c\uff0c\u56e0\u4e3a Redis \u6ca1\u6709\u4e13\u7528\u7684\u6574\u6570\u7c7b\u578b\uff0c\u6240\u4ee5 key \u5185\u50a8\u5b58\u7684\u5b57\u7b26\u4e32\u88ab\u89e3\u91ca\u4e3a\u5341\u8fdb\u5236 64 \u4f4d\u6709\u7b26\u53f7\u6574\u6570\u6765\u6267\u884c INCR \u64cd\u4f5c\u3002\u5982\u679c\u503c\u5305\u542b\u9519\u8bef\u7684\u7c7b\u578b\uff0c\u6216\u5b57\u7b26\u4e32\u7c7b\u578b\u7684\u503c\u4e0d\u80fd\u8868\u793a\u4e3a\u6570\u5b57\uff0c\u90a3\u4e48\u8fd4\u56de\u4e00\u4e2a\u9519\u8bef\u3002<\/p>\n
\u4eceredis\u5b9e\u4f8b\u4e2d\u67e5\u770b\u8be5key\u7684value,\u4f1a\u53d1\u73b0\u7ed3\u679c\u7c7b\u4f3c\u8fd9\u6837\uff1a<\/p>\n
\n
“\\xac\\xed\\x00\\x05sr\\x00\\x11java.lang.Integer\\x12\\xe2\\xa0\\xa4\\xf7\\x81\\x878\\x02\\x00\\x01I\\x00\\x05valuexr\\x00\\x10java.lang.Number\\x86\\xac\\x95\\x1d\\x0b\\x94\\xe0\\x8b\\x02\\x00\\x00xp\\x00\\x00\\x00\\x01”<\/p>\n<\/blockquote>\n
\u539f\u56e0\u5728\u4e8evalue\u4f7f\u7528\u7684\u5e8f\u5217\u5316\u65b9\u5f0f\u662fJdkSerializationRedisSerializer,\u8fd9\u548cINCR\u547d\u4ee4\u5bf9\u7ed3\u679c\u7684\u8981\u6c42\u662f\u8fdd\u80cc\u7684\u3002<\/p>\n
\u8be5\u4f7f\u7528\u54ea\u79cd\u5e8f\u5217\u5316\u65b9\u5f0f\u628avalue\u653e\u8fdb\u53bb\u5462\uff1f\u6309\u7167INCR\u547d\u4ee4\u5bf9\u7ed3\u679c\u7684\u8981\u6c42\uff0c\u6700\u5bb9\u6613\u60f3\u5230StringRedisSerializer\uff0c\u4f46\u7ecf\u8fc7\u5c1d\u8bd5\u8fd9\u4e5f\u884c\u4e0d\u901a<\/p>\n
\n
\u4f1a\u62a5java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String\u3002<\/p>\n<\/blockquote>\n
\u5982\u679c\u770b\u8fc7RedisAtomicInteger\u7684\u6e90\u7801\uff0c\u5728private RedisAtomicInteger(String redisCounter, RedisConnectionFactory factory, Integer initialValue)\u4e2d\u4f1a\u53d1\u73b0\u65b9\u6cd5\u5185\u90e8\u521b\u5efa\u4e86RedisTemplate\u5b9e\u4f8b\uff0c\u5bf9value\u8bbe\u7f6e\u7684\u5e8f\u5217\u5316\u65b9\u5f0f\u662fGenericToStringSerializer\u3002<\/p>\n
\u8be5\u5e8f\u5217\u5316\u5185\u90e8\u4f7f\u7528spring core\u5305\u4e0b\u7684
org.springframework.core.convert.support.DefaultConversionService\u4f5c\u4e3a\u9ed8\u8ba4\u7684\u5bf9\u8c61\u548c\u5b57\u7b26\u4e32\u7684\u8f6c\u6362\u65b9\u5f0f\uff0c\u4e3b\u8981\u4e3a\u4e86\u6ee1\u8db3\u5927\u591a\u6570\u73af\u5883\u7684\u8981\u6c42\u3002<\/p>\n
\u81f3\u6b64\uff0c\u6211\u4eec\u7ec8\u4e8e\u77e5\u9053\u4e86\u9519\u8bef\u7684\u6839\u672c\u539f\u56e0\uff0c\u6784\u9020RedisAtomicInteger\u65f6\u4f20\u5165\u7684redisTemplate\u662f\u6709\u95ee\u9898\u7684\uff0cvalue\u7684\u9ed8\u8ba4\u5e8f\u5217\u5316\u65b9\u5f0f\u4e0d\u6ee1\u8db3RedisAtomicInteger\u7684\u9700\u8981\u3002\u90a3\u4e48\u95ee\u9898\u4e5f\u8fce\u5203\u800c\u89e3\uff0c\u5c06GenericToStringSerializer\u4f5c\u4e3aredisTemplate\u7684value\u5e8f\u5217\u5316\u65b9\u5f0f\u3002<\/p>\n
\u8fd9\u6837\u867d\u7136\u89e3\u51b3\u4e86\u95ee\u9898\uff0c\u4f46\u5f88\u9ebb\u70e6\uff0c\u5f88\u53ef\u80fd\u4e3a\u4e86RedisAtomicInteger\u7684\u8981\u6c42\u9700\u8981\u518d\u521b\u5efa\u4e00\u4e2aredisTemplate\uff0c\u7b80\u76f4\u4e0d\u80fd\u5fcd\u53d7\u3002\u518d\u770bRedisAtomicInteger\u7684\u6e90\u7801\uff0c\u53d1\u73b0\u6784\u9020\u51fd\u6570\u9664\u4e86\u53ef\u4ee5\u7528redisTemplate,\u8fd8\u53ef\u4ee5\u7528RedisConnectionFactory\uff0c\u5c1d\u8bd5\u4e4b\u540e\uff0c\u5b8c\u7f8e\u89e3\u51b3\u3002<\/p>\n
\u4ee5\u4e0a\u4e3a\u4e2a\u4eba\u7ecf\u9a8c\uff0c\u5e0c\u671b\u80fd\u7ed9\u5927\u5bb6\u4e00\u4e2a\u53c2\u8003\uff0c\u4e5f\u5e0c\u671b\u5927\u5bb6\u591a\u591a\u652f\u6301golang\u5b66\u4e60\u7f51\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4f7f\u7528RedisAtomicInt...<\/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-201582","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201582","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=201582"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201582\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}