{"id":60161,"date":"2024-10-13T00:33:19","date_gmt":"2024-10-12T16:33:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/60161\/"},"modified":"2024-10-13T00:33:19","modified_gmt":"2024-10-12T16:33:19","slug":"c%e8%aa%9e%e8%a8%80%e5%af%a6%e7%8f%be%e8%a8%aa%e5%95%8f%e4%bc%ba%e6%9c%8d%e5%99%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e6%95%99%e7%a8%8b-c%e8%a8%aa%e5%95%8f%e4%bc%ba%e6%9c%8d%e5%99%a8%e6%95%b8%e6%93%9a","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/60161\/","title":{"rendered":"C\u8a9e\u8a00\u5be6\u73fe\u8a2a\u554f\u4f3a\u670d\u5668\u6578\u64da\u5eab\u6559\u7a0b (c\u8a2a\u554f\u4f3a\u670d\u5668\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"c%e8%aa%9e%e8%a8%80%e5%af%a6%e7%8f%be%e8%a8%aa%e5%95%8f%e4%bc%ba%e6%9c%8d%e5%99%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e6%95%99%e7%a8%8b-oPAIpcCHxs\">C\u8a9e\u8a00\u5be6\u73fe\u8a2a\u554f\u4f3a\u670d\u5668\u6578\u64da\u5eab\u6559\u7a0b<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0c\u80fd\u5920\u6709\u6548\u5730\u8a2a\u554f\u548c\u64cd\u4f5c\u6578\u64da\u5eab\u662f\u958b\u767c\u8005\u5fc5\u5099\u7684\u6280\u80fd\u4e4b\u4e00\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\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u6027\u80fd\u548c\u9748\u6d3b\u6027\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u8a2a\u554f\u4f3a\u670d\u5668\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6b65\u9a5f\u3002<\/p>\n<h2 id=\"1-%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-oPAIpcCHxs\">1. \u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u60a8\u7684\u958b\u767c\u74b0\u5883\u5df2\u7d93\u8a2d\u7f6e\u597d\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u8981\u6c42\uff1a<\/p>\n<ul>\n<li>\u5b89\u88ddC\u7de8\u8b6f\u5668\uff08\u5982GCC\uff09<\/li>\n<li>\u5b89\u88ddMySQL\u6216\u5176\u4ed6\u6578\u64da\u5eab\u7cfb\u7d71<\/li>\n<li>\u5b89\u88dd\u76f8\u61c9\u7684\u6578\u64da\u5eab\u9a45\u52d5\u5eab\uff08\u5982MySQL Connector\/C\uff09<\/li>\n<\/ul>\n<h2 id=\"2-%e9%80%a3%e6%8e%a5%e6%95%b8%e6%93%9a%e5%ba%ab-oPAIpcCHxs\">2. \u9023\u63a5\u6578\u64da\u5eab<\/h2>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5305\u542b\u5fc5\u8981\u7684\u982d\u6587\u4ef6\u4e26\u8a2d\u7f6e\u6578\u64da\u5eab\u9023\u63a5\u3002\u4ee5\u4e0b\u662f\u9023\u63a5MySQL\u6578\u64da\u5eab\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\", \"database\", 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<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u60a8\u9700\u8981\u5c07\u201clocalhost\u201d\u3001\u201cuser\u201d\u3001\u201cpassword\u201d\u548c\u201cdatabase\u201d\u66ff\u63db\u70ba\u60a8\u7684\u6578\u64da\u5eab\u4f3a\u670d\u5668\u5730\u5740\u3001\u7528\u6236\u540d\u3001\u5bc6\u78bc\u548c\u6578\u64da\u5eab\u540d\u7a31\u3002<\/p>\n<h2 id=\"3-%e5%9f%b7%e8%a1%8c%e6%9f%a5%e8%a9%a2-oPAIpcCHxs\">3. \u57f7\u884c\u67e5\u8a62<\/h2>\n<p>\u9023\u63a5\u6210\u529f\u5f8c\uff0c\u60a8\u53ef\u4ee5\u57f7\u884cSQL\u67e5\u8a62\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\nMYSQL_RES *result = mysql_store_result(conn);\nif (result == NULL) {\n    fprintf(stderr, \"mysql_store_result() failed. Error: %sn\", mysql_error(conn));\n    mysql_close(conn);\n    return EXIT_FAILURE;\n}\n\nint num_fields = mysql_num_fields(result);\nMYSQL_ROW row;\n\nwhile ((row = mysql_fetch_row(result))) {\n    for (int i = 0; i &lt; num_fields; i++) {\n        printf(\"%s \", row[i] ? row[i] : \"NULL\");\n    }\n    printf(\"n\");\n}\n\nmysql_free_result(result);\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u57f7\u884c\u4e86\u4e00\u500b\u7c21\u55ae\u7684SELECT\u67e5\u8a62\uff0c\u4e26\u5c07\u7d50\u679c\u6253\u5370\u5230\u63a7\u5236\u53f0\u3002\u60a8\u53ef\u4ee5\u6839\u64da\u9700\u8981\u4fee\u6539\u67e5\u8a62\u8a9e\u53e5\u3002<\/p>\n<h2 id=\"4-%e9%8c%af%e8%aa%a4%e8%99%95%e7%90%86-oPAIpcCHxs\">4. \u932f\u8aa4\u8655\u7406<\/h2>\n<p>\u5728\u8207\u6578\u64da\u5eab\u4ea4\u4e92\u6642\uff0c\u932f\u8aa4\u8655\u7406\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u4f7f\u7528mysql_error()\u51fd\u6578\u53ef\u4ee5\u7372\u53d6\u6700\u8fd1\u4e00\u6b21\u64cd\u4f5c\u7684\u932f\u8aa4\u4fe1\u606f\uff0c\u9019\u5c0d\u65bc\u8abf\u8a66\u975e\u5e38\u6709\u5e6b\u52a9\u3002<\/p>\n<h2 id=\"5-%e7%b5%90%e8%ab%96-oPAIpcCHxs\">5. \u7d50\u8ad6<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u60a8\u61c9\u8a72\u80fd\u5920\u4f7f\u7528C\u8a9e\u8a00\u6210\u529f\u8a2a\u554f\u4f3a\u670d\u5668\u6578\u64da\u5eab\u3002\u96d6\u7136C\u8a9e\u8a00\u7684\u5b78\u7fd2\u66f2\u7dda\u76f8\u5c0d\u8f03\u9661\uff0c\u4f46\u5176\u6027\u80fd\u548c\u9748\u6d3b\u6027\u4f7f\u5176\u5728\u8a31\u591a\u61c9\u7528\u4e2d\u4ecd\u7136\u5177\u6709\u91cd\u8981\u5730\u4f4d\u3002\u5e0c\u671b\u9019\u7bc7\u6559\u7a0b\u80fd\u5e6b\u52a9\u60a8\u5728\u6578\u64da\u5eab\u64cd\u4f5c\u65b9\u9762\u53d6\u5f97\u9032\u5c55\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-oPAIpcCHxs\">\u7e3d\u7d50<\/h2>\n<p>\u5728\u9019\u7bc7\u6587\u7ae0\u4e2d\uff0c\u6211\u5011\u63a2\u8a0e\u4e86\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u8a2a\u554f\u4f3a\u670d\u5668\u6578\u64da\u5eab\u7684\u57fa\u672c\u6b65\u9a5f\u548c\u793a\u4f8b\u4ee3\u78bc\u3002\u7121\u8ad6\u60a8\u662f\u521d\u5b78\u8005\u9084\u662f\u6709\u7d93\u9a57\u7684\u958b\u767c\u8005\uff0c\u638c\u63e1\u9019\u4e9b\u6280\u80fd\u90fd\u5c07\u5c0d\u60a8\u7684\u958b\u767c\u5de5\u4f5c\u5927\u6709\u88e8\u76ca\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u8655\u7406\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u642d\u5efa\u60a8\u7684\u6578\u64da\u5eab\u4f3a\u670d\u5668\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u61c9\u7528\u63d0\u4f9b\u66f4\u597d\u7684\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528C\u8a9e\u8a00\u8a2a\u554f\u4f3a\u670d\u5668\u6578\u64da\u5eab\uff0c\u638c\u63e1\u9023\u63a5\u3001\u67e5\u8a62\u548c\u6578\u64da\u64cd\u4f5c\u7684\u5be6\u7528\u6280\u5de7\uff0c\u63d0\u5347\u7de8\u7a0b\u80fd\u529b\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-60161","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60161","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=60161"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60161\/revisions"}],"predecessor-version":[{"id":60162,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/60161\/revisions\/60162"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=60161"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=60161"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=60161"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}