{"id":60145,"date":"2024-10-13T00:25:22","date_gmt":"2024-10-12T16:25:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60145\/"},"modified":"2024-10-13T00:25:22","modified_gmt":"2024-10-12T16:25:22","slug":"c%e8%aa%9e%e8%a8%80%e5%af%a6%e6%99%82%e8%ae%80%e5%8f%96%e8%80%83%e5%8b%a4%e6%a9%9f%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8c%87%e5%8d%97-c%e5%af%a6%e6%99%82%e8%ae%80%e5%8f%96%e8%80%83","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60145\/","title":{"rendered":"C\u8a9e\u8a00\u5be6\u6642\u8b80\u53d6\u8003\u52e4\u6a5f\u6578\u64da\u5eab\u64cd\u4f5c\u6307\u5357 (c\u5be6\u6642\u8b80\u53d6\u8003\u52e4\u6a5f\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"c%e8%aa%9e%e8%a8%80%e5%af%a6%e6%99%82%e8%ae%80%e5%8f%96%e8%80%83%e5%8b%a4%e6%a9%9f%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c%e6%8c%87%e5%8d%97-BaDSUFrTcf\">C\u8a9e\u8a00\u5be6\u6642\u8b80\u53d6\u8003\u52e4\u6a5f\u6578\u64da\u5eab\u64cd\u4f5c\u6307\u5357<\/h1>\n<p>\u5728\u73fe\u4ee3\u4f01\u696d\u4e2d\uff0c\u8003\u52e4\u7ba1\u7406\u7cfb\u7d71\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002\u96a8\u8457\u79d1\u6280\u7684\u9032\u6b65\uff0c\u8a31\u591a\u516c\u53f8\u9078\u64c7\u4f7f\u7528\u8003\u52e4\u6a5f\u4f86\u81ea\u52d5\u5316\u8003\u52e4\u6578\u64da\u7684\u6536\u96c6\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u5be6\u6642\u8b80\u53d6\u8003\u52e4\u6a5f\u7684\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u64cd\u4f5c\u6307\u5357\u548c\u793a\u4f8b\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e8%80%83%e5%8b%a4%e6%a9%9f%e6%95%b8%e6%93%9a%e5%ba%ab%e6%a6%82%e8%bf%b0-BaDSUFrTcf\">\u8003\u52e4\u6a5f\u6578\u64da\u5eab\u6982\u8ff0<\/h2>\n<p>\u8003\u52e4\u6a5f\u901a\u5e38\u6703\u5c07\u8003\u52e4\u6578\u64da\u5b58\u5132\u5728\u6578\u64da\u5eab\u4e2d\uff0c\u9019\u4e9b\u6578\u64da\u5eab\u53ef\u4ee5\u662f\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982MySQL\u3001SQLite\uff09\u6216\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982MongoDB\uff09\u3002\u5728\u9019\u88e1\uff0c\u6211\u5011\u5c07\u4ee5MySQL\u70ba\u4f8b\uff0c\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u9023\u63a5\u4e26\u8b80\u53d6\u6578\u64da\u3002<\/p>\n<h2 id=\"%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-BaDSUFrTcf\">\u74b0\u5883\u6e96\u5099<\/h2>\n<ul>\n<li>\u5b89\u88ddMySQL\u6578\u64da\u5eab<\/li>\n<li>\u5b89\u88ddC\u8a9e\u8a00\u7de8\u8b6f\u5668\uff08\u5982GCC\uff09<\/li>\n<li>\u5b89\u88ddMySQL C API\u5eab<\/li>\n<\/ul>\n<h2 id=\"%e9%80%a3%e6%8e%a5%e5%88%b0mysql%e6%95%b8%e6%93%9a%e5%ba%ab-BaDSUFrTcf\">\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab<\/h2>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5728C\u8a9e\u8a00\u4e2d\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u9023\u63a5\u7684\u57fa\u672c\u4ee3\u78bc\uff1a<\/p>\n<pre><code>\n#include &lt;stdio.h&gt;\n#include &lt;mysql\/mysql.h&gt;\n\nint main() {\n    MYSQL *conn;\n    conn = mysql_init(NULL);\n\n    if (conn == NULL) {\n        fprintf(stderr, \"mysql_init() failedn\");\n        return EXIT_FAILURE;\n    }\n\n    if (mysql_real_connect(conn, \"localhost\", \"user\", \"password\", \"attendance_db\", 0, NULL, 0) == NULL) {\n        fprintf(stderr, \"mysql_real_connect() failedn\");\n        mysql_close(conn);\n        return EXIT_FAILURE;\n    }\n\n    printf(\"\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff01n\");\n    mysql_close(conn);\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n<h2 id=\"%e5%af%a6%e6%99%82%e8%ae%80%e5%8f%96%e8%80%83%e5%8b%a4%e6%95%b8%e6%93%9a-BaDSUFrTcf\">\u5be6\u6642\u8b80\u53d6\u8003\u52e4\u6578\u64da<\/h2>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u8b80\u53d6\u8003\u52e4\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u67e5\u8a62\u8003\u52e4\u6578\u64da\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>\n#include &lt;stdio.h&gt;\n#include &lt;mysql\/mysql.h&gt;\n\nint main() {\n    MYSQL *conn;\n    MYSQL_RES *res;\n    MYSQL_ROW row;\n\n    conn = mysql_init(NULL);\n    mysql_real_connect(conn, \"localhost\", \"user\", \"password\", \"attendance_db\", 0, NULL, 0);\n\n    if (mysql_query(conn, \"SELECT * FROM attendance\")) {\n        fprintf(stderr, \"SELECT * failed. Error: %sn\", mysql_error(conn));\n        return EXIT_FAILURE;\n    }\n\n    res = mysql_store_result(conn);\n    int num_fields = mysql_num_fields(res);\n\n    while ((row = mysql_fetch_row(res))) {\n        for (int i = 0; i &lt; num_fields; i++) {\n            printf(&quot;%s &quot;, row[i] ? row[i] : &quot;NULL&quot;);\n        }\n        printf(&quot;n&quot;);\n    }\n\n    mysql_free_result(res);\n    mysql_close(conn);\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n<h2 id=\"%e8%80%83%e5%8b%a4%e6%95%b8%e6%93%9a%e7%9a%84%e5%af%a6%e6%99%82%e6%9b%b4%e6%96%b0-BaDSUFrTcf\">\u8003\u52e4\u6578\u64da\u7684\u5be6\u6642\u66f4\u65b0<\/h2>\n<p>\u70ba\u4e86\u5be6\u6642\u66f4\u65b0\u8003\u52e4\u6578\u64da\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528\u4e00\u500b\u5faa\u74b0\u4f86\u5b9a\u671f\u67e5\u8a62\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u66f4\u65b0\u6578\u64da\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;stdio.h&gt;\n#include &lt;mysql\/mysql.h&gt;\n#include &lt;unistd.h&gt;\n\nint main() {\n    MYSQL *conn;\n    MYSQL_RES *res;\n    MYSQL_ROW row;\n\n    conn = mysql_init(NULL);\n    mysql_real_connect(conn, \"localhost\", \"user\", \"password\", \"attendance_db\", 0, NULL, 0);\n\n    while (1) {\n        if (mysql_query(conn, \"SELECT * FROM attendance\")) {\n            fprintf(stderr, \"SELECT * failed. Error: %sn\", mysql_error(conn));\n            break;\n        }\n\n        res = mysql_store_result(conn);\n        int num_fields = mysql_num_fields(res);\n\n        while ((row = mysql_fetch_row(res))) {\n            for (int i = 0; i &lt; num_fields; i++) {\n                printf(&quot;%s &quot;, row[i] ? row[i] : &quot;NULL&quot;);\n            }\n            printf(&quot;n&quot;);\n        }\n\n        mysql_free_result(res);\n        sleep(5); \/\/ \u6bcf5\u79d2\u66f4\u65b0\u4e00\u6b21\n    }\n\n    mysql_close(conn);\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-BaDSUFrTcf\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528C\u8a9e\u8a00\u5be6\u6642\u8b80\u53d6\u8003\u52e4\u6a5f\u7684\u6578\u64da\u5eab\u3002\u9019\u4e0d\u50c5\u63d0\u9ad8\u4e86\u8003\u52e4\u7ba1\u7406\u7684\u6548\u7387\uff0c\u9084\u80fd\u5920\u53ca\u6642\u7372\u53d6\u54e1\u5de5\u7684\u8003\u52e4\u72c0\u614b\u3002\u82e5\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u4f3a\u670d\u5668\u4f86\u904b\u884c\u60a8\u7684\u8003\u52e4\u7cfb\u7d71\uff0c\u8003\u616e\u4f7f\u7528\u6211\u5011\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u89e3\u6c7a\u65b9\u6848\uff0c\u63d0\u4f9b\u9ad8\u6548\u80fd\u548c\u7a69\u5b9a\u6027\uff0c\u52a9\u60a8\u8f15\u9b06\u7ba1\u7406\u8003\u52e4\u6578\u64da\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1C\u8a9e\u8a00\u5be6\u6642\u8b80\u53d6\u8003\u52e4\u6a5f\u6578\u64da\u5eab\u7684\u64cd\u4f5c\u6307\u5357\uff0c\u8f15\u9b06\u5be6\u73fe\u6578\u64da\u7372\u53d6\u8207\u7ba1\u7406\uff0c\u63d0\u5347\u8003\u52e4\u7cfb\u7d71\u6548\u7387\u3002<\/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-60145","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60145","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=60145"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60145\/revisions"}],"predecessor-version":[{"id":60146,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60145\/revisions\/60146"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60145"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}