{"id":59679,"date":"2024-10-12T23:56:25","date_gmt":"2024-10-12T15:56:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/59679\/"},"modified":"2024-10-12T23:56:25","modified_gmt":"2024-10-12T15:56:25","slug":"c%e8%aa%9e%e8%a8%80%e7%b7%a8%e7%a8%8b%e4%b8%ad%e5%af%a6%e7%8f%be%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e9%80%a3%e6%8e%a5%e7%9a%84%e6%96%b9%e6%b3%95-c%e5%a6%82%e4%bd%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/59679\/","title":{"rendered":"C\u8a9e\u8a00\u7de8\u7a0b\u4e2d\u5be6\u73fe\u591a\u500b\u6578\u64da\u5eab\u67e5\u8a62\u9023\u63a5\u7684\u65b9\u6cd5 (c\u5982\u4f55\u5be6\u73fe\u591a\u500b\u67e5\u8a62\u6578\u64da\u5eab\u9023\u63a5)"},"content":{"rendered":"<h1 id=\"c%e8%aa%9e%e8%a8%80%e7%b7%a8%e7%a8%8b%e4%b8%ad%e5%af%a6%e7%8f%be%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e8%a9%a2%e9%80%a3%e6%8e%a5%e7%9a%84%e6%96%b9%e6%b3%95-PUGajZORXG\">C\u8a9e\u8a00\u7de8\u7a0b\u4e2d\u5be6\u73fe\u591a\u500b\u6578\u64da\u5eab\u67e5\u8a62\u9023\u63a5\u7684\u65b9\u6cd5<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\u3002C\u8a9e\u8a00\u4f5c\u70ba\u4e00\u7a2e\u5e95\u5c64\u7de8\u7a0b\u8a9e\u8a00\uff0c\u96d6\u7136\u4e0d\u5982\u4e00\u4e9b\u9ad8\u7d1a\u8a9e\u8a00\u90a3\u6a23\u76f4\u89c0\uff0c\u4f46\u5b83\u4ecd\u7136\u80fd\u5920\u6709\u6548\u5730\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u5be6\u73fe\u591a\u500b\u6578\u64da\u5eab\u67e5\u8a62\u9023\u63a5\u7684\u65b9\u6cd5\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-PUGajZORXG\">\u70ba\u4ec0\u9ebc\u9700\u8981\u591a\u500b\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n<p>\u5728\u67d0\u4e9b\u61c9\u7528\u5834\u666f\u4e2d\uff0c\u958b\u767c\u8005\u53ef\u80fd\u9700\u8981\u540c\u6642\u9023\u63a5\u591a\u500b\u6578\u64da\u5eab\u3002\u4f8b\u5982\uff0c\u7576\u4e00\u500b\u61c9\u7528\u9700\u8981\u5f9e\u4e0d\u540c\u7684\u6578\u64da\u6e90\u7372\u53d6\u6578\u64da\u6642\uff0c\u6216\u8005\u5728\u5fae\u670d\u52d9\u67b6\u69cb\u4e2d\uff0c\u6bcf\u500b\u670d\u52d9\u53ef\u80fd\u9700\u8981\u8a2a\u554f\u4e0d\u540c\u7684\u6578\u64da\u5eab\u3002\u9019\u6a23\u7684\u9700\u6c42\u4fc3\u4f7f\u958b\u767c\u8005\u5c0b\u627e\u6709\u6548\u7684\u89e3\u6c7a\u65b9\u6848\u4f86\u7ba1\u7406\u591a\u500b\u6578\u64da\u5eab\u9023\u63a5\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8mysql%e7%9a%84c%e8%aa%9e%e8%a8%80%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-PUGajZORXG\">\u4f7f\u7528MySQL\u7684C\u8a9e\u8a00\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n<p>\u5728C\u8a9e\u8a00\u4e2d\uff0c\u6700\u5e38\u7528\u7684\u6578\u64da\u5eab\u9023\u63a5\u5eab\u4e4b\u4e00\u662fMySQL C API\u3002\u9019\u500bAPI\u63d0\u4f9b\u4e86\u8c50\u5bcc\u7684\u529f\u80fd\u4f86\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\u548c\u67e5\u8a62\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528MySQL C API\u4f86\u5be6\u73fe\u591a\u500b\u6578\u64da\u5eab\u9023\u63a5\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f1%ef%bc%9a%e5%ae%89%e8%a3%9dmysql-c-api-PUGajZORXG\">\u6b65\u9a5f1\uff1a\u5b89\u88ddMySQL C API<\/h3>\n<p>\u9996\u5148\uff0c\u78ba\u4fdd\u4f60\u7684\u958b\u767c\u74b0\u5883\u4e2d\u5df2\u7d93\u5b89\u88dd\u4e86MySQL C API\u3002\u4f60\u53ef\u4ee5\u901a\u904e\u5305\u7ba1\u7406\u5668\u4f86\u5b89\u88dd\uff0c\u4f8b\u5982\u5728Ubuntu\u4e0a\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>sudo apt-get install libmysqlclient-dev<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f2%ef%bc%9a%e5%8c%85%e5%90%ab%e5%bf%85%e8%a6%81%e7%9a%84%e9%a0%ad%e6%96%87%e4%bb%b6-PUGajZORXG\">\u6b65\u9a5f2\uff1a\u5305\u542b\u5fc5\u8981\u7684\u982d\u6587\u4ef6<\/h3>\n<p>\u5728\u4f60\u7684C\u7a0b\u5e8f\u4e2d\uff0c\u5305\u542bMySQL\u7684\u982d\u6587\u4ef6\uff1a<\/p>\n<pre><code>#include <\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f3%ef%bc%9a%e5%bb%ba%e7%ab%8b%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-PUGajZORXG\">\u6b65\u9a5f3\uff1a\u5efa\u7acb\u591a\u500b\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\u4ee3\u78bc\uff0c\u5c55\u793a\u5982\u4f55\u5efa\u7acb\u591a\u500b\u6578\u64da\u5eab\u9023\u63a5\uff1a<\/p>\n<pre><code>\n#include \n#include \n#include \n\n#define DB_COUNT 2\n\nint main() {\n    MYSQL *conn[DB_COUNT];\n    MYSQL_RES *res;\n    MYSQL_ROW row;\n\n    const char *db_names[DB_COUNT] = {\"database1\", \"database2\"};\n    const char *host = \"localhost\";\n    const char *user = \"root\";\n    const char *password = \"password\";\n\n    for (int i = 0; i &lt; DB_COUNT; i++) {\n        conn[i] = mysql_init(NULL);\n        if (conn[i] == NULL) {\n            fprintf(stderr, &quot;mysql_init() failedn&quot;);\n            return EXIT_FAILURE;\n        }\n\n        if (mysql_real_connect(conn[i], host, user, password, db_names[i], 0, NULL, 0) == NULL) {\n            fprintf(stderr, &quot;mysql_real_connect() failedn&quot;);\n            mysql_close(conn[i]);\n            return EXIT_FAILURE;\n        }\n\n        if (mysql_query(conn[i], &quot;SELECT * FROM your_table&quot;)) {\n            fprintf(stderr, &quot;SELECT * failed. Error: %sn&quot;, mysql_error(conn[i]));\n            mysql_close(conn[i]);\n            return EXIT_FAILURE;\n        }\n\n        res = mysql_store_result(conn[i]);\n        if (res == NULL) {\n            fprintf(stderr, &quot;mysql_store_result() failed. Error: %sn&quot;, mysql_error(conn[i]));\n            mysql_close(conn[i]);\n            return EXIT_FAILURE;\n        }\n\n        while ((row = mysql_fetch_row(res)) != NULL) {\n            printf(&quot;%sn&quot;, row[0]); \/\/ \u5047\u8a2d\u4f60\u53ea\u60f3\u6253\u5370\u7b2c\u4e00\u5217\n        }\n\n        mysql_free_result(res);\n        mysql_close(conn[i]);\n    }\n\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-PUGajZORXG\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fdd\u6bcf\u500b\u6578\u64da\u5eab\u7684\u9023\u63a5\u53c3\u6578\u6b63\u78ba\u7121\u8aa4\u3002<\/li>\n<li>\u5728\u4f7f\u7528\u5b8c\u6578\u64da\u5eab\u9023\u63a5\u5f8c\uff0c\u52d9\u5fc5\u95dc\u9589\u9023\u63a5\u4ee5\u91cb\u653e\u8cc7\u6e90\u3002<\/li>\n<li>\u8003\u616e\u4f7f\u7528\u591a\u7dda\u7a0b\u6216\u7570\u6b65\u8655\u7406\u4f86\u63d0\u9ad8\u6027\u80fd\uff0c\u7279\u5225\u662f\u5728\u9700\u8981\u540c\u6642\u8655\u7406\u5927\u91cf\u67e5\u8a62\u6642\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-PUGajZORXG\">\u7e3d\u7d50<\/h2>\n<p>\u5728C\u8a9e\u8a00\u4e2d\u5be6\u73fe\u591a\u500b\u6578\u64da\u5eab\u67e5\u8a62\u9023\u63a5\u4e26\u4e0d\u8907\u96dc\uff0c\u53ea\u9700\u4f7f\u7528\u5408\u9069\u7684\u6578\u64da\u5eabAPI\u4e26\u9075\u5faa\u6b63\u78ba\u7684\u6b65\u9a5f\u5373\u53ef\u3002\u901a\u904e\u4e0a\u8ff0\u793a\u4f8b\uff0c\u4f60\u53ef\u4ee5\u8f15\u9b06\u5730\u7ba1\u7406\u591a\u500b\u6578\u64da\u5eab\u9023\u63a5\uff0c\u5f9e\u800c\u6eff\u8db3\u4e0d\u540c\u7684\u61c9\u7528\u9700\u6c42\u3002\u5982\u679c\u4f60\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u4f60\u7684\u61c9\u7528\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22C\u8a9e\u8a00\u4e2d\u5be6\u73fe\u591a\u500b\u6578\u64da\u5eab\u67e5\u8a62\u9023\u63a5\u7684\u65b9\u6cd5\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u7c21\u5316\u7de8\u7a0b\u6d41\u7a0b\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-59679","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59679","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=59679"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59679\/revisions"}],"predecessor-version":[{"id":59680,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/59679\/revisions\/59680"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=59679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=59679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=59679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}