{"id":168361,"date":"2024-11-06T11:44:25","date_gmt":"2024-11-06T03:44:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/168361\/"},"modified":"2024-11-06T11:44:26","modified_gmt":"2024-11-06T03:44:26","slug":"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9b%b4%e9%80%a3%ef%bc%9a%e6%8f%90%e9%ab%98%e6%95%88%e7%8e%87%ef%bc%8c%e7%af%80%e7%9c%81%e6%99%82%e9%96%93-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e7%9b%b4","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/168361\/","title":{"rendered":"SQL \u6578\u64da\u5eab\u76f4\u9023\uff1a\u63d0\u9ad8\u6548\u7387\uff0c\u7bc0\u7701\u6642\u9593 (sql \u6578\u64da\u5eab\u672c\u5730\u76f4\u9023)"},"content":{"rendered":"<h1 id=\"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9b%b4%e9%80%a3%ef%bc%9a%e6%8f%90%e9%ab%98%e6%95%88%e7%8e%87%ef%bc%8c%e7%af%80%e7%9c%81%e6%99%82%e9%96%93-PEDgvcDqbr\">SQL 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\u6578\u64da\u5eab\u76f4\u9023\u662f\u6307\u61c9\u7528\u7a0b\u5e8f\u76f4\u63a5\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u800c\u4e0d\u662f\u901a\u904e\u4e2d\u4ecb\u5c64\u6216\u5176\u4ed6\u670d\u52d9\u9032\u884c\u6578\u64da\u4ea4\u4e92\u3002\u9019\u7a2e\u65b9\u5f0f\u53ef\u4ee5\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u7684\u5ef6\u9072\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u67e5\u8a62\u548c\u64cd\u4f5c\u7684\u6548\u7387\u3002\u76f4\u9023\u7684\u65b9\u5f0f\u901a\u5e38\u6d89\u53ca\u4f7f\u7528\u6578\u64da\u5eab\u7684\u539f\u751f\u9a45\u52d5\u7a0b\u5e8f\uff0c\u9019\u6a23\u53ef\u4ee5\u66f4\u597d\u5730\u5229\u7528\u6578\u64da\u5eab\u7684\u7279\u6027\u548c\u6027\u80fd\u512a\u5316\u3002<\/p>\n<h2 id=\"sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9b%b4%e9%80%a3%e7%9a%84%e5%84%aa%e5%8b%a2-PEDgvcDqbr\">SQL 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id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be-sql-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9b%b4%e9%80%a3-PEDgvcDqbr\">\u5982\u4f55\u5be6\u73fe SQL \u6578\u64da\u5eab\u76f4\u9023<\/h2>\n<p>\u5be6\u73fe SQL \u6578\u64da\u5eab\u76f4\u9023\u7684\u904e\u7a0b\u76f8\u5c0d\u7c21\u55ae\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e9%a9%85%e5%8b%95%e7%a8%8b%e5%ba%8f-PEDgvcDqbr\">1. \u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f<\/h3>\n<p>\u6839\u64da\u6240\u4f7f\u7528\u7684\u6578\u64da\u5eab\u985e\u578b\uff08\u5982 MySQL\u3001PostgreSQL\u3001SQL Server \u7b49\uff09\uff0c\u9078\u64c7\u76f8\u61c9\u7684\u9a45\u52d5\u7a0b\u5e8f\u3002\u4f8b\u5982\uff0c\u5c0d\u65bc MySQL\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>mysql-connector-java<\/code> \u9a45\u52d5\u7a0b\u5e8f\u4f86\u5be6\u73fe Java \u61c9\u7528\u7a0b\u5e8f\u7684\u76f4\u9023\u3002<\/p>\n<h3 id=\"2-%e9%85%8d%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-PEDgvcDqbr\">2. \u914d\u7f6e\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u5728\u61c9\u7528\u7a0b\u5e8f\u4e2d\u914d\u7f6e\u6578\u64da\u5eab\u9023\u63a5\u5b57\u7b26\u4e32\uff0c\u901a\u5e38\u5305\u62ec\u6578\u64da\u5eab\u7684\u5730\u5740\u3001\u7aef\u53e3\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u3002\u4ee5\u4e0b\u662f\u4e00\u500b MySQL \u7684\u9023\u63a5\u793a\u4f8b\uff1a<\/p>\n<pre><code>String url = \"jdbc:mysql:\/\/localhost:3306\/mydatabase\";\nString user = \"username\";\nString password = \"password\";\nConnection conn = DriverManager.getConnection(url, user, password);<\/code><\/pre>\n<h3 id=\"3-%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e6%93%8d%e4%bd%9c-PEDgvcDqbr\">3. \u5be6\u73fe\u6578\u64da\u64cd\u4f5c<\/h3>\n<p>\u4e00\u65e6\u5efa\u7acb\u4e86\u9023\u63a5\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528 SQL \u8a9e\u53e5\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>Statement stmt = conn.createStatement();\nResultSet rs = stmt.executeQuery(\"SELECT * FROM users\");\nwhile (rs.next()) {\n    System.out.println(\"User: \" + rs.getString(\"username\"));\n}<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-PEDgvcDqbr\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5118\u7ba1 SQL \u6578\u64da\u5eab\u76f4\u9023\u6709\u8a31\u591a\u512a\u52e2\uff0c\u4f46\u5728\u5be6\u65bd\u6642\u4e5f\u9700\u8981\u8003\u616e\u4e00\u4e9b\u6f5b\u5728\u7684\u554f\u984c\uff1a<\/p>\n<ul>\n<li><strong>\u5b89\u5168\u6027\uff1a<\/strong>\u76f4\u63a5\u9023\u63a5\u6578\u64da\u5eab\u53ef\u80fd\u6703\u589e\u52a0\u5b89\u5168\u98a8\u96aa\uff0c\u7279\u5225\u662f\u5728\u516c\u5171\u7db2\u7d61\u4e0a\u3002\u56e0\u6b64\uff0c\u61c9\u78ba\u4fdd\u4f7f\u7528\u52a0\u5bc6\u9023\u63a5\uff08\u5982 SSL\/TLS\uff09\u3002<\/li>\n<li><strong>\u53ef\u64f4\u5c55\u6027\uff1a<\/strong>\u5728\u9ad8\u6d41\u91cf\u7684\u60c5\u6cc1\u4e0b\uff0c\u76f4\u9023\u53ef\u80fd\u6703\u5c0e\u81f4\u6578\u64da\u5eab\u904e\u8f09\uff0c\u56e0\u6b64\u9700\u8981\u8003\u616e\u8ca0\u8f09\u5747\u8861\u548c\u6578\u64da\u5eab\u96c6\u7fa4\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/li>\n<li><strong>\u932f\u8aa4\u8655\u7406\uff1a<\/strong>\u5728\u76f4\u9023\u7684\u60c5\u6cc1\u4e0b\uff0c\u61c9\u7528\u7a0b\u5e8f\u9700\u8981\u5177\u5099\u826f\u597d\u7684\u932f\u8aa4\u8655\u7406\u6a5f\u5236\uff0c\u4ee5\u61c9\u5c0d\u53ef\u80fd\u51fa\u73fe\u7684\u9023\u63a5\u554f\u984c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-PEDgvcDqbr\">\u7e3d\u7d50<\/h2>\n<p>SQL 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