{"id":76698,"date":"2024-10-16T09:04:21","date_gmt":"2024-10-16T01:04:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76698\/"},"modified":"2024-10-16T09:04:22","modified_gmt":"2024-10-16T01:04:22","slug":"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%admysql_real_connect%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%a8%ad%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76698\/","title":{"rendered":"MySQL\u6578\u64da\u5eab\u4e2dMySQL_real_connect\u7684\u57fa\u672c\u8a2d\u7f6e"},"content":{"rendered":"<h1 id=\"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%b8%admysql_real_connect%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%a8%ad%e7%bd%ae-EuIasAoszA\">MySQL\u6578\u64da\u5eab\u4e2dMySQL_real_connect\u7684\u57fa\u672c\u8a2d\u7f6e<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cMySQL\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u7db2\u7ad9\u9084\u662f\u5927\u578b\u4f01\u696d\u7cfb\u7d71\uff0cMySQL\u90fd\u80fd\u63d0\u4f9b\u7a69\u5b9a\u7684\u6578\u64da\u5b58\u5132\u89e3\u6c7a\u65b9\u6848\u3002\u5728\u4f7f\u7528MySQL\u9032\u884c\u6578\u64da\u5eab\u9023\u63a5\u6642\uff0c<code>mysql_real_connect<\/code>\u51fd\u6578\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e<code>mysql_real_connect<\/code>\u7684\u57fa\u672c\u8a2d\u7f6e\u53ca\u5176\u4f7f\u7528\u65b9\u6cd5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%afmysql_real_connect%ef%bc%9f-EuIasAoszA\">\u4ec0\u9ebc\u662fmysql_real_connect\uff1f<\/h2>\n<p><code>mysql_real_connect<\/code>\u662fMySQL C API\u4e2d\u7684\u4e00\u500b\u51fd\u6578\uff0c\u7528\u65bc\u5efa\u7acb\u8207MySQL\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u9019\u500b\u51fd\u6578\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u901a\u904e\u63d0\u4f9b\u5fc5\u8981\u7684\u53c3\u6578\u4f86\u9023\u63a5\u5230\u6307\u5b9a\u7684\u6578\u64da\u5eab\u670d\u52d9\u5668\u3002\u6210\u529f\u7684\u9023\u63a5\u5c07\u4f7f\u61c9\u7528\u7a0b\u5e8f\u80fd\u5920\u57f7\u884c\u67e5\u8a62\u548c\u64cd\u4f5c\u6578\u64da\u3002<\/p>\n<h2 id=\"mysql_real_connect%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-EuIasAoszA\">mysql_real_connect\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<pre><code>\nMYSQL *mysql_real_connect(MYSQL *mysql, \n                          const char *host, \n                          const char *user, \n                          const char *passwd, \n                          const char *db, \n                          unsigned int port, \n                          const char *unix_socket, \n                          unsigned long client_flag);\n<\/code><\/pre>\n<h2 id=\"%e5%8f%83%e6%95%b8%e8%a9%b3%e8%a7%a3-EuIasAoszA\">\u53c3\u6578\u8a73\u89e3<\/h2>\n<ul>\n<li><strong>mysql<\/strong>: \u6307\u5411MYSQL\u7d50\u69cb\u7684\u6307\u91dd\uff0c\u9019\u662f\u901a\u904e<code>mysql_init<\/code>\u51fd\u6578\u521d\u59cb\u5316\u7684\u3002<\/li>\n<li><strong>host<\/strong>: \u6578\u64da\u5eab\u670d\u52d9\u5668\u7684\u4e3b\u6a5f\u540d\u6216IP\u5730\u5740\uff0c\u901a\u5e38\u662f<code>localhost<\/code>\u6216\u9060\u7a0b\u670d\u52d9\u5668\u7684\u5730\u5740\u3002<\/li>\n<li><strong>user<\/strong>: \u7528\u65bc\u9023\u63a5\u6578\u64da\u5eab\u7684\u7528\u6236\u540d\u3002<\/li>\n<li><strong>passwd<\/strong>: \u7528\u6236\u7684\u5bc6\u78bc\u3002<\/li>\n<li><strong>db<\/strong>: \u8981\u9023\u63a5\u7684\u6578\u64da\u5eab\u540d\u7a31\u3002<\/li>\n<li><strong>port<\/strong>: \u6578\u64da\u5eab\u670d\u52d9\u5668\u7684\u7aef\u53e3\u865f\uff0c\u9ed8\u8a8d\u70ba3306\u3002<\/li>\n<li><strong>unix_socket<\/strong>: \u5982\u679c\u4f7f\u7528UNIX\u5957\u63a5\u5b57\u9023\u63a5\uff0c\u5247\u6307\u5b9a\u5957\u63a5\u5b57\u7684\u8def\u5f91\u3002<\/li>\n<li><strong>client_flag<\/strong>: \u5ba2\u6236\u7aef\u6a19\u8a8c\uff0c\u7528\u65bc\u6307\u5b9a\u9023\u63a5\u7684\u9078\u9805\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-EuIasAoszA\">\u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528<code>mysql_real_connect<\/code>\u7684\u7c21\u55ae\u793a\u4f8b\uff1a<\/p>\n<pre><code>\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    \/\/ \u9032\u884c\u6578\u64da\u5eab\u64cd\u4f5c...\n\n    mysql_close(conn);\n    return EXIT_SUCCESS;\n}\n<\/code><\/pre>\n<h2 id=\"%e9%8c%af%e8%aa%a4%e8%99%95%e7%90%86-EuIasAoszA\">\u932f\u8aa4\u8655\u7406<\/h2>\n<p>\u5728\u4f7f\u7528<code>mysql_real_connect<\/code>\u6642\uff0c\u932f\u8aa4\u8655\u7406\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u7576\u9023\u63a5\u5931\u6557\u6642\uff0c\u61c9\u8a72\u4f7f\u7528<code>mysql_error<\/code>\u51fd\u6578\u4f86\u7372\u53d6\u932f\u8aa4\u4fe1\u606f\uff0c\u9019\u6a23\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5feb\u901f\u5b9a\u4f4d\u554f\u984c\u3002<\/p>\n<pre><code>\nif (mysql_real_connect(conn, \"localhost\", \"user\", \"password\", \"database\", 0, NULL, 0) == NULL) {\n    fprintf(stderr, \"Connection failed: %sn\", mysql_error(conn));\n}\n<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-EuIasAoszA\">\u7e3d\u7d50<\/h2>\n<p>\u5728MySQL\u6578\u64da\u5eab\u4e2d\uff0c<code>mysql_real_connect<\/code>\u51fd\u6578\u662f\u5efa\u7acb\u9023\u63a5\u7684\u95dc\u9375\u3002\u901a\u904e\u6b63\u78ba\u8a2d\u7f6e\u53c3\u6578\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u9023\u63a5\u5230\u6578\u64da\u5eab\u4e26\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002\u4e86\u89e3\u9019\u4e9b\u57fa\u672c\u8a2d\u7f6e\u4e0d\u50c5\u80fd\u63d0\u9ad8\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u5e6b\u52a9\u89e3\u6c7a\u6f5b\u5728\u7684\u9023\u63a5\u554f\u984c\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684MySQL\u6578\u64da\u5eab\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u9805\u76ee\u9084\u662f\u5927\u578b\u4f01\u696d\u61c9\u7528\uff0c<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u90fd\u80fd\u63d0\u4f9b\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3MySQL\u6578\u64da\u5eab\u4e2dMySQL_real_connect\u7684\u57fa\u672c\u8a2d\u7f6e\uff0c\u638c\u63e1\u9023\u63a5\u53c3\u6578\u4ee5\u512a\u5316\u6578\u64da\u5eab\u6027\u80fd\u548c\u5b89\u5168\u6027\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-76698","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76698","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=76698"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76698\/revisions"}],"predecessor-version":[{"id":76699,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76698\/revisions\/76699"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76698"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76698"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76698"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}