{"id":59695,"date":"2024-10-13T00:02:21","date_gmt":"2024-10-12T16:02:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/59695\/"},"modified":"2024-10-13T00:02:22","modified_gmt":"2024-10-12T16:02:22","slug":"c%e8%aa%9e%e8%a8%80%e7%a8%8b%e5%ba%8f%e5%93%a1%e5%bf%85%e5%82%99%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e7%9a%84%e5%b0%81%e8%a3%9d%e6%8a%80%e5%b7%a7-c%e6%80%8e%e9%ba%bc%e5%b0%81","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/59695\/","title":{"rendered":"C\u8a9e\u8a00\u7a0b\u5e8f\u54e1\u5fc5\u5099\uff1a\u6578\u64da\u5eab\u9023\u63a5\u7684\u5c01\u88dd\u6280\u5de7 (c\u600e\u9ebc\u5c01\u88dd\u6578\u64da\u5eab\u9023\u63a5)"},"content":{"rendered":"<h1 id=\"c%e8%aa%9e%e8%a8%80%e7%a8%8b%e5%ba%8f%e5%93%a1%e5%bf%85%e5%82%99%ef%bc%9a%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e7%9a%84%e5%b0%81%e8%a3%9d%e6%8a%80%e5%b7%a7-KSaDmMnsIk\">C\u8a9e\u8a00\u7a0b\u5e8f\u54e1\u5fc5\u5099\uff1a\u6578\u64da\u5eab\u9023\u63a5\u7684\u5c01\u88dd\u6280\u5de7<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u5df2\u7d93\u6210\u70ba\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u5c0d\u65bcC\u8a9e\u8a00\u7a0b\u5e8f\u54e1\u4f86\u8aaa\uff0c\u638c\u63e1\u6578\u64da\u5eab\u9023\u63a5\u7684\u5c01\u88dd\u6280\u5de7\u4e0d\u50c5\u80fd\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\uff0c\u9084\u80fd\u589e\u5f37\u4ee3\u78bc\u7684\u53ef\u7dad\u8b77\u6027\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u6709\u6548\u5730\u5c01\u88dd\u6578\u64da\u5eab\u9023\u63a5\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6280\u5de7\u3002<\/p>\n<h2 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id=\"%e5%9f%ba%e6%9c%ac%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e5%b0%81%e8%a3%9d-KSaDmMnsIk\">\u57fa\u672c\u7684\u6578\u64da\u5eab\u9023\u63a5\u5c01\u88dd<\/h2>\n<p>\u5728C\u8a9e\u8a00\u4e2d\uff0c\u901a\u5e38\u4f7f\u7528MySQL\u7684C API\u4f86\u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u6578\u64da\u5eab\u9023\u63a5\u5c01\u88dd\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;mysql\/mysql.h&gt;\n#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n\ntypedef struct {\n    MYSQL *conn;\n} Database;\n\nDatabase* db_connect(const char *host, const char *user, const char *password, const char *dbname) {\n    Database *db = (Database *)malloc(sizeof(Database));\n    db-&gt;conn = mysql_init(NULL);\n    \n    if (db-&gt;conn == NULL) {\n        fprintf(stderr, \"mysql_init() failedn\");\n        return NULL;\n    }\n\n    if (mysql_real_connect(db-&gt;conn, host, user, password, dbname, 0, NULL, 0) == NULL) {\n        fprintf(stderr, \"mysql_real_connect() failedn\");\n        mysql_close(db-&gt;conn);\n        return NULL;\n    }\n\n    return db;\n}\n\nvoid db_disconnect(Database *db) {\n    if (db) {\n        mysql_close(db-&gt;conn);\n        free(db);\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u5b9a\u7fa9\u4e86\u4e00\u500b\u540d\u70ba<code>Database<\/code>\u7684\u7d50\u69cb\u9ad4\uff0c\u4e26\u63d0\u4f9b\u4e86<code>db_connect<\/code>\u548c<code>db_disconnect<\/code>\u51fd\u6578\u4f86\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\u3002\u9019\u6a23\u7684\u5c01\u88dd\u4f7f\u5f97\u6578\u64da\u5eab\u7684\u9023\u63a5\u548c\u65b7\u958b\u8b8a\u5f97\u7c21\u55ae\u660e\u4e86\u3002<\/p>\n<h2 id=\"%e5%9f%b7%e8%a1%8c%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%b0%81%e8%a3%9d-KSaDmMnsIk\">\u57f7\u884c\u67e5\u8a62\u7684\u5c01\u88dd<\/h2>\n<p>\u9664\u4e86\u9023\u63a5\u548c\u65b7\u958b\u6578\u64da\u5eab\uff0c\u6211\u5011\u9084\u9700\u8981\u5c01\u88dd\u57f7\u884c\u67e5\u8a62\u7684\u529f\u80fd\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u5728\u5c01\u88dd\u4e2d\u6dfb\u52a0\u67e5\u8a62\u57f7\u884c\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nint db_query(Database *db, const char *query) {\n    if (mysql_query(db-&gt;conn, query)) {\n        fprintf(stderr, \"mysql_query() failed: %sn\", mysql_error(db-&gt;conn));\n        return -1;\n    }\n    return 0;\n}\n<\/code><\/pre>\n<p>\u9019\u500b<code>db_query<\/code>\u51fd\u6578\u63a5\u53d7\u4e00\u500b\u67e5\u8a62\u5b57\u7b26\u4e32\uff0c\u4e26\u57f7\u884c\u8a72\u67e5\u8a62\u3002\u5982\u679c\u67e5\u8a62\u5931\u6557\uff0c\u5247\u8fd4\u56de-1\uff0c\u4e26\u6253\u5370\u932f\u8aa4\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-KSaDmMnsIk\">\u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u4e0a\u8ff0\u5c01\u88dd\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nint main() {\n    Database *db = db_connect(\"localhost\", \"user\", \"password\", \"dbname\");\n    if (db == NULL) {\n        return EXIT_FAILURE;\n    }\n\n    if (db_query(db, \"SELECT * FROM table_name\") != 0) {\n        db_disconnect(db);\n        return EXIT_FAILURE;\n    }\n\n    \/\/ \u8655\u7406\u67e5\u8a62\u7d50\u679c...\n\n    db_disconnect(db);\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-KSaDmMnsIk\">\u7e3d\u7d50<\/h2>\n<p>\u5c01\u88dd\u6578\u64da\u5eab\u9023\u63a5\u662fC\u8a9e\u8a00\u7a0b\u5e8f\u54e1\u5fc5\u5099\u7684\u6280\u80fd\u4e4b\u4e00\u3002\u901a\u904e\u6709\u6548\u7684\u5c01\u88dd\uff0c\u60a8\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u78bc\u7684\u53ef\u8b80\u6027\u548c\u53ef\u7dad\u8b77\u6027\uff0c\u4e26\u7c21\u5316\u932f\u8aa4\u8655\u7406\u3002\u7121\u8ad6\u662f\u4f7f\u7528MySQL\u9084\u662f\u5176\u4ed6\u6578\u64da\u5eab\uff0c\u9019\u4e9b\u5c01\u88dd\u6280\u5de7\u90fd\u80fd\u5e6b\u52a9\u60a8\u66f4\u9ad8\u6548\u5730\u9032\u884c\u958b\u767c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6 <a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a> 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