{"id":60211,"date":"2024-10-13T00:58:20","date_gmt":"2024-10-12T16:58:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60211\/"},"modified":"2024-10-13T00:58:20","modified_gmt":"2024-10-12T16:58:20","slug":"c%e8%aa%9e%e8%a8%80%e4%b8%ad%e5%a6%82%e4%bd%95%e7%8d%b2%e5%8f%96%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84item%e5%88%97%ef%bc%9f-c%e7%8d%b2%e5%8f%96item%e5%88%97%e7%9a%84%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60211\/","title":{"rendered":"C\u8a9e\u8a00\u4e2d\u5982\u4f55\u7372\u53d6\u6578\u64da\u5eab\u4e2d\u7684item\u5217\uff1f (c\u7372\u53d6item\u5217\u7684\u6578\u64da\u5eab)"},"content":{"rendered":"

C\u8a9e\u8a00\u4e2d\u5982\u4f55\u7372\u53d6\u6578\u64da\u5eab\u4e2d\u7684item\u5217\uff1f<\/h1>\n

\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0cC\u8a9e\u8a00\u4ecd\u7136\u662f\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u5c24\u5176\u662f\u5728\u7cfb\u7d71\u7de8\u7a0b\u548c\u5d4c\u5165\u5f0f\u7cfb\u7d71\u4e2d\u3002\u96a8\u8457\u6578\u64da\u5eab\u6280\u8853\u7684\u767c\u5c55\uff0c\u8a31\u591a\u958b\u767c\u8005\u5e0c\u671b\u80fd\u5920\u5728C\u8a9e\u8a00\u4e2d\u76f4\u63a5\u64cd\u4f5c\u6578\u64da\u5eab\uff0c\u4ee5\u4fbf\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728C\u8a9e\u8a00\u4e2d\u7372\u53d6\u6578\u64da\u5eab\u4e2d\u7684item\u5217\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n

\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n

\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u78ba\u4fdd\u5df2\u7d93\u5b89\u88dd\u4e86\u76f8\u61c9\u7684\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f\u3002\u4ee5MySQL\u70ba\u4f8b\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u4f7f\u7528MySQL C API\u4f86\u9023\u63a5\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u9023\u63a5\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n

\n#include \n\nMYSQL *conn;\nconn = mysql_init(NULL);\n\nif (conn == NULL) {\n    fprintf(stderr, \"mysql_init() failedn\");\n    return EXIT_FAILURE;\n}\n\nif (mysql_real_connect(conn, \"localhost\", \"user\", \"password\", \"database\", 0, NULL, 0) == NULL) {\n    fprintf(stderr, \"mysql_real_connect() failedn\");\n    mysql_close(conn);\n    return EXIT_FAILURE;\n}\n<\/code><\/pre>\n
\u57f7\u884c\u67e5\u8a62<\/h2>\n
\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u5c31\u53ef\u4ee5\u57f7\u884cSQL\u67e5\u8a62\u4f86\u7372\u53d6item\u5217\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u67e5\u8a62\u6578\u64da\u5eab\u4e2d\u7684item\u5217\uff1a<\/p>\n
\nif (mysql_query(conn, \"SELECT item FROM items_table\")) {\n    fprintf(stderr, \"SELECT failed. Error: %sn\", mysql_error(conn));\n    mysql_close(conn);\n    return EXIT_FAILURE;\n}\n<\/code><\/pre>\n
\u8655\u7406\u67e5\u8a62\u7d50\u679c<\/h2>\n
\u67e5\u8a62\u57f7\u884c\u5f8c\uff0c\u63a5\u4e0b\u4f86\u9700\u8981\u8655\u7406\u7d50\u679c\u96c6\u3002\u53ef\u4ee5\u4f7f\u7528mysql_store_result()\u51fd\u6578\u4f86\u7372\u53d6\u7d50\u679c\u96c6\uff0c\u7136\u5f8c\u4f7f\u7528mysql_fetch_row()\u4f86\u904d\u6b77\u6bcf\u4e00\u884c\u6578\u64da\uff1a<\/p>\n
\nMYSQL_RES *res;\nMYSQL_ROW row;\n\nres = mysql_store_result(conn);\nif (res == NULL) {\n    fprintf(stderr, \"mysql_store_result() failed. Error: %sn\", mysql_error(conn));\n    mysql_close(conn);\n    return EXIT_FAILURE;\n}\n\nwhile ((row = mysql_fetch_row(res)) != NULL) {\n    printf(\"Item: %sn\", row[0]);\n}\n\nmysql_free_result(res);\n<\/code><\/pre>\n
\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5<\/h2>\n
\u5728\u5b8c\u6210\u6240\u6709\u64cd\u4f5c\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\u4ee5\u91cb\u653e\u8cc7\u6e90\uff1a<\/p>\n
\nmysql_close(conn);\n<\/code><\/pre>\n
\u5b8c\u6574\u793a\u4f8b<\/h2>\n
\u4ee5\u4e0b\u662f\u4e00\u500b\u5b8c\u6574\u7684C\u8a9e\u8a00\u7a0b\u5e8f\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\u4e26\u7372\u53d6item\u5217\uff1a<\/p>\n
\n#include \n#include \n#include \n\nint main() {\n    MYSQL *conn;\n    MYSQL_RES *res;\n    MYSQL_ROW row;\n\n    conn = mysql_init(NULL);\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\", \"database\", 0, NULL, 0) == NULL) {\n        fprintf(stderr, \"mysql_real_connect() failedn\");\n        mysql_close(conn);\n        return EXIT_FAILURE;\n    }\n\n    if (mysql_query(conn, \"SELECT item FROM items_table\")) {\n        fprintf(stderr, \"SELECT failed. Error: %sn\", mysql_error(conn));\n        mysql_close(conn);\n        return EXIT_FAILURE;\n    }\n\n    res = mysql_store_result(conn);\n    if (res == NULL) {\n        fprintf(stderr, \"mysql_store_result() failed. Error: %sn\", mysql_error(conn));\n        mysql_close(conn);\n        return EXIT_FAILURE;\n    }\n\n    while ((row = mysql_fetch_row(res)) != NULL) {\n        printf(\"Item: %sn\", row[0]);\n    }\n\n    mysql_free_result(res);\n    mysql_close(conn);\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n
\u7d50\u8ad6<\/h2>\n
\u5728C\u8a9e\u8a00\u4e2d\u7372\u53d6\u6578\u64da\u5eab\u4e2d\u7684item\u5217\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u53ea\u9700\u9075\u5faa\u9023\u63a5\u6578\u64da\u5eab\u3001\u57f7\u884c\u67e5\u8a62\u3001\u8655\u7406\u7d50\u679c\u548c\u95dc\u9589\u9023\u63a5\u7684\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528MySQL C API\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u8207\u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\uff0c\u5f9e\u800c\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684\u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u9069\u5408\u5404\u7a2e\u9700\u6c42\u3002\u7121\u8ad6\u662f \u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 \u4f3a\u670d\u5668<\/a>\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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