{"id":183520,"date":"2024-11-10T05:30:19","date_gmt":"2024-11-09T21:30:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183520\/"},"modified":"2024-11-10T05:30:20","modified_gmt":"2024-11-09T21:30:20","slug":"%e4%bd%bf%e7%94%a8-c-%e7%b7%a8%e7%a8%8b%e8%aa%9e%e8%a8%80%e6%9f%a5%e6%89%be%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%96%b9%e6%b3%95-c-%e4%b8%ad%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9f%a5%e6%89%be%e6%95%b8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183520\/","title":{"rendered":"\u4f7f\u7528 C \u7de8\u7a0b\u8a9e\u8a00\u67e5\u627e\u6578\u64da\u5eab\u7684\u65b9\u6cd5 (c \u4e2d\u6578\u64da\u5eab\u67e5\u627e\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e4%bd%bf%e7%94%a8-c-%e7%b7%a8%e7%a8%8b%e8%aa%9e%e8%a8%80%e6%9f%a5%e6%89%be%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%96%b9%e6%b3%95-HpbwnVfXDm\">\u4f7f\u7528 C \u7de8\u7a0b\u8a9e\u8a00\u67e5\u627e\u6578\u64da\u5eab\u7684\u65b9\u6cd5<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u666e\u904d\u3002\u7121\u8ad6\u662f\u4f01\u696d\u9084\u662f\u500b\u4eba\u9805\u76ee\uff0c\u6578\u64da\u5eab\u90fd\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002C \u7de8\u7a0b\u8a9e\u8a00\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u7cfb\u7d71\u7de8\u7a0b\u8a9e\u8a00\uff0c\u80fd\u5920\u8207\u6578\u64da\u5eab\u9032\u884c\u6709\u6548\u7684\u4ea4\u4e92\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 C \u7de8\u7a0b\u8a9e\u8a00\u67e5\u627e\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-HpbwnVfXDm\">\u6578\u64da\u5eab\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u6578\u64da\u5eab\u662f\u4e00\u7a2e\u6709\u7d44\u7e54\u7684\u6578\u64da\u96c6\u5408\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u3001\u7ba1\u7406\u548c\u6aa2\u7d22\u6578\u64da\u3002\u5e38\u898b\u7684\u6578\u64da\u5eab\u985e\u578b\u5305\u62ec\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982 MySQL\u3001PostgreSQL\uff09\u548c\u975e\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff08\u5982 MongoDB\uff09\u3002\u5728 C \u8a9e\u8a00\u4e2d\uff0c\u8207\u6578\u64da\u5eab\u7684\u4ea4\u4e92\u901a\u5e38\u901a\u904e\u7279\u5b9a\u7684\u5eab\u4f86\u5be6\u73fe\uff0c\u4f8b\u5982 MySQL C API\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-c-%e8%aa%9e%e8%a8%80%e6%9f%a5%e6%89%be%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a-HpbwnVfXDm\">\u4f7f\u7528 C \u8a9e\u8a00\u67e5\u627e\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da<\/h2>\n<p>\u5728 C \u8a9e\u8a00\u4e2d\u67e5\u627e\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\uff0c\u901a\u5e38\u9700\u8981\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u9023\u63a5\u5230\u6578\u64da\u5eab<\/li>\n<li>\u57f7\u884c\u67e5\u8a62<\/li>\n<li>\u8655\u7406\u67e5\u8a62\u7d50\u679c<\/li>\n<li>\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5<\/li>\n<\/ul>\n<h3 id=\"1-%e9%80%a3%e6%8e%a5%e5%88%b0%e6%95%b8%e6%93%9a%e5%ba%ab-HpbwnVfXDm\">1. \u9023\u63a5\u5230\u6578\u64da\u5eab<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u4f7f\u7528\u9069\u7576\u7684\u5eab\u4f86\u9023\u63a5\u5230\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 MySQL C API \u9023\u63a5\u5230 MySQL \u6578\u64da\u5eab\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n#include &lt;mysql\/mysql.h&gt;\n\nMYSQL *conn;\nconn = mysql_init(NULL);\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<h3 id=\"2-%e5%9f%b7%e8%a1%8c%e6%9f%a5%e8%a9%a2-HpbwnVfXDm\">2. \u57f7\u884c\u67e5\u8a62<\/h3>\n<p>\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u57f7\u884c SQL \u67e5\u8a62\u4f86\u67e5\u627e\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u57f7\u884c\u67e5\u8a62\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\nif (mysql_query(conn, \"SELECT * FROM table_name\")) {\n    fprintf(stderr, \"SELECT * failed. Error: %sn\", mysql_error(conn));\n    mysql_close(conn);\n    return EXIT_FAILURE;\n}\n<\/code><\/pre>\n<h3 id=\"3-%e8%99%95%e7%90%86%e6%9f%a5%e8%a9%a2%e7%b5%90%e6%9e%9c-HpbwnVfXDm\">3. \u8655\u7406\u67e5\u8a62\u7d50\u679c<\/h3>\n<p>\u67e5\u8a62\u57f7\u884c\u5f8c\uff0c\u6211\u5011\u9700\u8981\u8655\u7406\u7d50\u679c\u96c6\u3002\u53ef\u4ee5\u4f7f\u7528 mysql_store_result() \u51fd\u6578\u4f86\u7372\u53d6\u7d50\u679c\u96c6\uff0c\u7136\u5f8c\u4f7f\u7528 mysql_fetch_row() \u9010\u884c\u8b80\u53d6\u6578\u64da\uff1a<\/p>\n<pre><code>\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(\"%sn\", row[0]); \/\/ \u5047\u8a2d\u6211\u5011\u53ea\u6253\u5370\u7b2c\u4e00\u5217\n}\n\nmysql_free_result(res);\n<\/code><\/pre>\n<h3 id=\"4-%e9%97%9c%e9%96%89%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-HpbwnVfXDm\">4. \u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u6700\u5f8c\uff0c\u5b8c\u6210\u6240\u6709\u64cd\u4f5c\u5f8c\uff0c\u8a18\u5f97\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\uff1a<\/p>\n<pre><code>\nmysql_close(conn);\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-HpbwnVfXDm\">\u7e3d\u7d50<\/h2>\n<p>\u4f7f\u7528 C \u7de8\u7a0b\u8a9e\u8a00\u67e5\u627e\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u662f\u4e00\u500b\u76f8\u5c0d\u76f4\u63a5\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u5230\u9023\u63a5\u6578\u64da\u5eab\u3001\u57f7\u884c\u67e5\u8a62\u3001\u8655\u7406\u7d50\u679c\u548c\u95dc\u9589\u9023\u63a5\u7b49\u6b65\u9a5f\u3002\u901a\u904e\u4f7f\u7528 MySQL C API\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u8207 MySQL \u6578\u64da\u5eab\u9032\u884c\u4ea4\u4e92\uff0c\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u67e5\u627e\u529f\u80fd\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\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 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u985e\u578b\u7684 <a href=\"https:\/\/server.hk\">\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":"<p>\u63a2\u7d22\u4f7f\u7528 C \u7de8\u7a0b\u8a9e\u8a00\u67e5\u627e\u6578\u64da\u5eab\u7684\u65b9\u6cd5\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u5730\u8a2a\u554f\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u4e2d\u7684\u6578\u64da\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-183520","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183520","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=183520"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183520\/revisions"}],"predecessor-version":[{"id":183521,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/183520\/revisions\/183521"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=183520"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=183520"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=183520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}