{"id":1055,"date":"2020-06-09T17:58:38","date_gmt":"2020-06-09T09:58:38","guid":{"rendered":"http:\/\/diuut.com\/?p=1055"},"modified":"2020-09-17T09:16:12","modified_gmt":"2020-09-17T01:16:12","slug":"redistemplate%e5%b0%81%e8%a3%85bitcount%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/diuut.com\/?p=1055","title":{"rendered":"RedisTemplate\u5c01\u88c5BitMap\u76f8\u5173\u65b9\u6cd5(BitMapUtils)"},"content":{"rendered":"\n

\u9700\u6c42<\/p>\u5728redis\u5ba2\u6237\u7aef\u4e2d\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528bitMap\u7684\u5168\u90e8\u547d\u4ee4\uff0c\u4f46\u662fredisTemplate\u4e2d\u5374\u6ca1\u6709BitCount\u547d\u4ee4\uff0c\u5c31\u65e0\u6cd5\u7528\u4e8e\u7edf\u8ba1\uff0c\u56e0\u6b64\u9700\u8981\u81ea\u5df1\u5c01\u88c5\u4e00\u4e2aBitMapUtil<\/cite><\/blockquote>\n\n\n\n

\u6700\u5f00\u59cb\u601d\u8def\u662f\u76f4\u63a5\u5728\u4e00\u4e2aUtil\u4e2d\u6ce8\u5165redisFactory\u4e2d\u53d6\u4e00\u4e2aconn\uff0c\u867d\u7136\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\uff0c\u4f46\u662f\u5374\u6709\u4e00\u4e2a\u81f4\u547d\u7684\u95ee\u9898\uff0c\u4e0d\u5c5e\u4e8e\u8fde\u63a5\u6c60\u7ba1\u7406\uff0c\u56e0\u6b64\u5728\u6027\u80fd\u65b9\u9762\u4e0d\u53ef\u9760\u3002\u540e\u6765\u8fd8\u662f\u627e\u5230\u65b9\u6cd5\u5728redisTemplate\u4e2dexec\u5c01\u88c5\u6267\u884c\u3002<\/p>\n\n\n

\nimport org.springframework.beans.factory.annotation.Autowired;\nimport org.springframework.data.redis.connection.RedisStringCommands;\nimport org.springframework.data.redis.core.RedisCallback;\nimport org.springframework.data.redis.core.RedisTemplate;\nimport org.springframework.stereotype.Component;\n\nimport java.util.concurrent.TimeUnit;\n\n\/**\n * @Author Diuut\n * @Date 2020\/6\/9  11:18\n *\/\n@Component\npublic  class BitMapUtils {\n\n    private static RedisTemplate<String,String> redisTemplate;\n\n    @Autowired\n    public void setRedisTemplate(RedisTemplate redisTemplate) {\n        BitMapUtils.redisTemplate = redisTemplate;\n    }\n\n    \/**\n     * \u8bbe\u7f6ekey\u5b57\u6bb5\u7b2coffset\u4f4dbit\u6570\u503c\n     *\n     * @param key    \u5b57\u6bb5\n     * @param offset \u4f4d\u7f6e\n     * @param value  \u6570\u503c\n     *\/\n    public static void setBit(String key, long offset, boolean value) {\n        redisTemplate.execute((RedisCallback) con -> con.setBit(key.getBytes(), offset, value));\n    }\n\n    \/**\n     * \u5224\u65ad\u8be5key\u5b57\u6bb5offset\u4f4d\u5426\u4e3a1\n     *\n     * @param key    \u5b57\u6bb5\n     * @param offset \u4f4d\u7f6e\n     * @return \u7ed3\u679c\n     *\/\n    public static boolean getBit(String key, long offset) {\n        return (boolean) redisTemplate.execute((RedisCallback) con -> con.getBit(key.getBytes(), offset));\n\n    }\n\n    \/**\n     * \u7edf\u8ba1key\u5b57\u6bb5value\u4e3a1\u7684\u603b\u6570\n     *\n     * @param key \u5b57\u6bb5\n     * @return \u603b\u6570\n     *\/\n    public static Long bitCount(String key) {\n        return (Long) redisTemplate.execute((RedisCallback<Long>) con -> con.bitCount(key.getBytes()));\n    }\n\n    \/**\n     * \u7edf\u8ba1key\u5b57\u6bb5value\u4e3a1\u7684\u603b\u6570,\u4ecestart\u5f00\u59cb\u5230end\u7ed3\u675f\n     *\n     * @param key   \u5b57\u6bb5\n     * @param start \u8d77\u59cb\n     * @param end   \u7ed3\u675f\n     * @return \u603b\u6570\n     *\/\n    public static Long bitCount(String key, Long start, Long end) {\n        return (Long) redisTemplate.execute((RedisCallback) con -> con.bitCount(key.getBytes(), start, end));\n    }\n\n    \/**\n     * \u53d6\u591a\u4e2akey\u5e76\u96c6\u5e76\u8ba1\u7b97\u603b\u6570\n     *\n     * @param key key\n     * @return \u603b\u6570\n     *\/\n    public static Long OpOrCount(String... key) {\n        byte[][] keys = new byte[key.length][];\n        for (int i = 0; i < key.length; i++) {\n            keys[i] = key[i].getBytes();\n        }\n        redisTemplate.execute((RedisCallback) con -> con.bitOp(RedisStringCommands.BitOperation.OR, (key[0] + "To" + key[key.length - 1]).getBytes(), keys));\n        redisTemplate.expire(key[0] + "To" + key[key.length - 1], 10, TimeUnit.SECONDS);\n        return BitMapUtils.bitCount(key[0] + "To" + key[key.length - 1]);\n    }\n\n    \/**\n     * \u53d6\u591a\u4e2akey\u7684\u4ea4\u96c6\u5e76\u8ba1\u7b97\u603b\u6570\n     *\n     * @param key key\n     * @return \u603b\u6570\n     *\/\n    public static Long OpAndCount(String... key) {\n        byte[][] keys = new byte[key.length][];\n        for (int i = 0; i < key.length; i++) {\n            keys[i] = key[i].getBytes();\n        }\n        redisTemplate.execute((RedisCallback) con -> con.bitOp(RedisStringCommands.BitOperation.AND, (key[0] + "To" + key[key.length - 1]).getBytes(), keys));\n        redisTemplate.expire(key[0] + "To" + key[key.length - 1], 10, TimeUnit.SECONDS);\n        return BitMapUtils.bitCount(key[0] + "To" + key[key.length - 1]);\n    }\n\n    \/**\n     * \u53d6\u591a\u4e2akey\u7684\u8865\u96c6\u5e76\u8ba1\u7b97\u603b\u6570\n     *\n     * @param key key\n     * @return \u603b\u6570\n     *\/\n    public static Long OpXorCount(String... key) {\n        byte[][] keys = new byte[key.length][];\n        for (int i = 0; i < key.length; i++) {\n            keys[i] = key[i].getBytes();\n        }\n        redisTemplate.execute((RedisCallback) con -> con.bitOp(RedisStringCommands.BitOperation.XOR, (key[0] + "To" + key[key.length - 1]).getBytes(), keys));\n        redisTemplate.expire(key[0] + "To" + key[key.length - 1], 10, TimeUnit.SECONDS);\n        return BitMapUtils.bitCount(key[0] + "To" + key[key.length - 1]);\n    }\n\n    \/**\n     * \u53d6\u591a\u4e2akey\u7684\u5426\u96c6\u5e76\u8ba1\u7b97\u603b\u6570\n     *\n     * @param key key\n     * @return \u603b\u6570\n     *\/\n    public static Long OpNotCount(String... key) {\n        byte[][] keys = new byte[key.length][];\n        for (int i = 0; i < key.length; i++) {\n            keys[i] = key[i].getBytes();\n        }\n        redisTemplate.execute((RedisCallback) con -> con.bitOp(RedisStringCommands.BitOperation.NOT, (key[0] + "To" + key[key.length - 1]).getBytes(), keys));\n        redisTemplate.expire(key[0] + "To" + key[key.length - 1], 10, TimeUnit.SECONDS);\n        return BitMapUtils.bitCount(key[0] + "To" + key[key.length - 1]);\n    }\n}\n\n<\/pre><\/div>","protected":false},"excerpt":{"rendered":"
\u9700\u6c42 \u5728redis\u5ba2\u6237\u7aef\u4e2d\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528bitMap\u7684\u5168\u90e8\u547d\u4ee4\uff0c\u4f46\u662fredisTemplate\u4e2d\u5374\u6ca1\u6709BitCoview all . . .RedisTemplate\u5c01\u88c5BitMap\u76f8\u5173\u65b9\u6cd5(BitMapUtils)<\/span><\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":688,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[21,10],"_links":{"self":[{"href":"https:\/\/diuut.com\/index.php?rest_route=\/wp\/v2\/posts\/1055"}],"collection":[{"href":"https:\/\/diuut.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/diuut.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/diuut.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/diuut.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1055"}],"version-history":[{"count":14,"href":"https:\/\/diuut.com\/index.php?rest_route=\/wp\/v2\/posts\/1055\/revisions"}],"predecessor-version":[{"id":1511,"href":"https:\/\/diuut.com\/index.php?rest_route=\/wp\/v2\/posts\/1055\/revisions\/1511"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/diuut.com\/index.php?rest_route=\/wp\/v2\/media\/688"}],"wp:attachment":[{"href":"https:\/\/diuut.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/diuut.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/diuut.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}