{"id":190148,"date":"2024-11-12T10:11:01","date_gmt":"2024-11-12T02:11:01","guid":{"rendered":"https:\/\/server.hk\/cnblog\/190148\/"},"modified":"2024-11-12T10:11:02","modified_gmt":"2024-11-12T02:11:02","slug":"%e7%b6%b2%e9%a0%81%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8b%89%e5%8f%96%e6%ad%a5%e9%a9%9f%e8%a9%b3%e8%a7%a3-%e5%a6%82%e4%bd%95%e6%8b%89%e5%8f%96%e7%b6%b2%e9%a0%81%e6%95%b8%e6%93%9a%e5%ba%ab","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/190148\/","title":{"rendered":"\u7db2\u9801\u6578\u64da\u5eab\u62c9\u53d6\u6b65\u9a5f\u8a73\u89e3 (\u5982\u4f55\u62c9\u53d6\u7db2\u9801\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"%e7%b6%b2%e9%a0%81%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8b%89%e5%8f%96%e6%ad%a5%e9%a9%9f%e8%a9%b3%e8%a7%a3-%e5%a6%82%e4%bd%95%e6%8b%89%e5%8f%96%e7%b6%b2%e9%a0%81%e6%95%b8%e6%93%9a%e5%ba%ab-oqtSOsCSDn\">\u7db2\u9801\u6578\u64da\u5eab\u62c9\u53d6\u6b65\u9a5f\u8a73\u89e3 (\u5982\u4f55\u62c9\u53d6\u7db2\u9801\u6578\u64da\u5eab)<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u4f4d\u6642\u4ee3\uff0c\u6578\u64da\u7684\u7372\u53d6\u548c\u7ba1\u7406\u5c0d\u65bc\u7db2\u7ad9\u7684\u904b\u71df\u81f3\u95dc\u91cd\u8981\u3002\u7121\u8ad6\u662f\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u3001\u793e\u4ea4\u5a92\u9ad4\u9084\u662f\u5167\u5bb9\u7ba1\u7406\u7cfb\u7d71\uff0c\u6578\u64da\u5eab\u7684\u62c9\u53d6\u90fd\u662f\u4e00\u500b\u4e0d\u53ef\u6216\u7f3a\u7684\u904e\u7a0b\u3002\u672c\u6587\u5c07\u8a73\u7d30\u4ecb\u7d39\u5982\u4f55\u6709\u6548\u5730\u62c9\u53d6\u7db2\u9801\u6578\u64da\u5eab\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u6b65\u9a5f\u548c\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e7%b6%b2%e9%a0%81%e6%95%b8%e6%93%9a%e5%ba%ab%e6%8b%89%e5%8f%96%ef%bc%9f-oqtSOsCSDn\">\u4ec0\u9ebc\u662f\u7db2\u9801\u6578\u64da\u5eab\u62c9\u53d6\uff1f<\/h2>\n<p>\u7db2\u9801\u6578\u64da\u5eab\u62c9\u53d6\u662f\u6307\u5f9e\u6578\u64da\u5eab\u4e2d\u63d0\u53d6\u6240\u9700\u6578\u64da\u7684\u904e\u7a0b\u3002\u9019\u4e00\u904e\u7a0b\u901a\u5e38\u6d89\u53ca\u5230\u4f7f\u7528\u67e5\u8a62\u8a9e\u8a00\uff08\u5982SQL\uff09\u4f86\u6aa2\u7d22\u3001\u66f4\u65b0\u6216\u522a\u9664\u6578\u64da\u3002\u6578\u64da\u5eab\u53ef\u4ee5\u662f\u95dc\u806f\u578b\u6578\u64da\u5eab\uff08\u5982MySQL\u3001PostgreSQL\uff09\u6216\u975e\u95dc\u806f\u578b\u6578\u64da\u5eab\uff08\u5982MongoDB\uff09\u3002<\/p>\n<h2 id=\"%e6%8b%89%e5%8f%96%e7%b6%b2%e9%a0%81%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e6%ad%a5%e9%a9%9f-oqtSOsCSDn\">\u62c9\u53d6\u7db2\u9801\u6578\u64da\u5eab\u7684\u6b65\u9a5f<\/h2>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%80%ef%bc%9a%e8%a8%ad%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-oqtSOsCSDn\">\u6b65\u9a5f\u4e00\uff1a\u8a2d\u7f6e\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<p>\u5728\u958b\u59cb\u62c9\u53d6\u6578\u64da\u4e4b\u524d\uff0c\u9996\u5148\u9700\u8981\u8a2d\u7f6e\u8207\u6578\u64da\u5eab\u7684\u9023\u63a5\u3002\u9019\u901a\u5e38\u6d89\u53ca\u5230\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u3002<\/li>\n<li>\u5b89\u88dd\u76f8\u61c9\u7684\u9a45\u52d5\u7a0b\u5e8f\uff08\u5982MySQL\u7684JDBC\u9a45\u52d5\uff09\u3002<\/li>\n<li>\u4f7f\u7528\u6b63\u78ba\u7684\u9023\u63a5\u5b57\u7b26\u4e32\u4f86\u9023\u63a5\u6578\u64da\u5eab\u3002<\/li>\n<\/ul>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class DatabaseConnection {\n    public static void main(String[] args) {\n        String url = \"jdbc:mysql:\/\/localhost:3306\/your_database\";\n        String user = \"your_username\";\n        String password = \"your_password\";\n\n        try {\n            Connection connection = DriverManager.getConnection(url, user, password);\n            System.out.println(\"\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff01\");\n        } catch (SQLException e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%ba%8c%ef%bc%9a%e6%92%b0%e5%af%absql%e6%9f%a5%e8%a9%a2-oqtSOsCSDn\">\u6b65\u9a5f\u4e8c\uff1a\u64b0\u5bebSQL\u67e5\u8a62<\/h3>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u63a5\u4e0b\u4f86\u9700\u8981\u64b0\u5bebSQL\u67e5\u8a62\u4f86\u62c9\u53d6\u6240\u9700\u7684\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u67e5\u8a62\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>String query = \"SELECT * FROM users WHERE age &gt; 18\";\n<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u5f9e\u540d\u70ba\u201cusers\u201d\u7684\u8868\u4e2d\u9078\u64c7\u6240\u6709\u5e74\u9f61\u5927\u65bc18\u7684\u7528\u6236\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e4%b8%89%ef%bc%9a%e5%9f%b7%e8%a1%8c%e6%9f%a5%e8%a9%a2%e4%b8%a6%e8%99%95%e7%90%86%e7%b5%90%e6%9e%9c-oqtSOsCSDn\">\u6b65\u9a5f\u4e09\uff1a\u57f7\u884c\u67e5\u8a62\u4e26\u8655\u7406\u7d50\u679c<\/h3>\n<p>\u57f7\u884c\u67e5\u8a62\u5f8c\uff0c\u9700\u8981\u8655\u7406\u8fd4\u56de\u7684\u7d50\u679c\u96c6\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u57f7\u884c\u67e5\u8a62\u4e26\u7372\u53d6\u7d50\u679c\u7684\u7bc4\u4f8b\uff1a<\/p>\n<pre><code>import java.sql.ResultSet;\nimport java.sql.Statement;\n\nStatement statement = connection.createStatement();\nResultSet resultSet = statement.executeQuery(query);\n\nwhile (resultSet.next()) {\n    String username = resultSet.getString(\"username\");\n    int age = resultSet.getInt(\"age\");\n    System.out.println(\"\u7528\u6236\u540d: \" + username + \", \u5e74\u9f61: \" + age);\n}\n<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f%e5%9b%9b%ef%bc%9a%e9%97%9c%e9%96%89%e9%80%a3%e6%8e%a5-oqtSOsCSDn\">\u6b65\u9a5f\u56db\uff1a\u95dc\u9589\u9023\u63a5<\/h3>\n<p>\u5728\u5b8c\u6210\u6578\u64da\u62c9\u53d6\u5f8c\uff0c\u52d9\u5fc5\u95dc\u9589\u6578\u64da\u5eab\u9023\u63a5\u4ee5\u91cb\u653e\u8cc7\u6e90\uff1a<\/p>\n<pre><code>resultSet.close();\nstatement.close();\nconnection.close();\n<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-oqtSOsCSDn\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u5b89\u5168\u6027\uff0c\u907f\u514dSQL\u6ce8\u5165\u653b\u64ca\u3002<\/li>\n<li>\u5b9a\u671f\u5099\u4efd\u6578\u64da\u5eab\uff0c\u4ee5\u9632\u6578\u64da\u4e1f\u5931\u3002<\/li>\n<li>\u4f7f\u7528\u9069\u7576\u7684\u7d22\u5f15\u4f86\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-oqtSOsCSDn\">\u7e3d\u7d50<\/h2>\n<p>\u62c9\u53d6\u7db2\u9801\u6578\u64da\u5eab\u662f\u4e00\u500b\u91cd\u8981\u7684\u904e\u7a0b\uff0c\u6d89\u53ca\u5230\u6578\u64da\u5eab\u7684\u9023\u63a5\u3001\u67e5\u8a62\u7684\u64b0\u5beb\u53ca\u7d50\u679c\u7684\u8655\u7406\u3002\u901a\u904e\u9075\u5faa\u4e0a\u8ff0\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u6709\u6548\u5730\u5f9e\u6578\u64da\u5eab\u4e2d\u7372\u53d6\u6240\u9700\u7684\u6578\u64da\u3002\u82e5\u60a8\u9700\u8981\u66f4\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u4e91\u4f3a\u670d\u5668<\/a>\u4f86\u63d0\u5347\u60a8\u7684\u7db2\u7ad9\u6027\u80fd\u548c\u6578\u64da\u8655\u7406\u80fd\u529b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8a73\u89e3\u7db2\u9801\u6578\u64da\u5eab\u62c9\u53d6\u6b65\u9a5f\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u63d0\u53d6\u548c\u7ba1\u7406\u7db2\u9801\u6578\u64da\uff0c\u63d0\u5347\u6578\u64da\u5206\u6790\u80fd\u529b\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-190148","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190148","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=190148"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190148\/revisions"}],"predecessor-version":[{"id":190149,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/190148\/revisions\/190149"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=190148"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=190148"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=190148"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}