{"id":62029,"date":"2024-10-13T15:37:15","date_gmt":"2024-10-13T07:37:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62029\/"},"modified":"2024-10-13T15:37:15","modified_gmt":"2024-10-13T07:37:15","slug":"java%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%aa%e5%95%8f%ef%bc%8c%e8%bc%95%e9%ac%86%e6%87%89%e5%b0%8d%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%b9%e6%a1%88-java","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62029\/","title":{"rendered":"Java\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u5eab\u8a2a\u554f\uff0c\u8f15\u9b06\u61c9\u5c0d\u591a\u500b\u6578\u64da\u5eab\u65b9\u6848 (java\u8a2a\u554f\u591a\u500b\u6578\u64da\u5eab)"},"content":{"rendered":"<h1 id=\"java%e5%af%a6%e7%8f%be%e9%ab%98%e6%95%88%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%aa%e5%95%8f%ef%bc%8c%e8%bc%95%e9%ac%86%e6%87%89%e5%b0%8d%e5%a4%9a%e5%80%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e6%96%b9%e6%a1%88-EfuzvuVoPl\">Java\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u5eab\u8a2a\u554f\uff0c\u8f15\u9b06\u61c9\u5c0d\u591a\u500b\u6578\u64da\u5eab\u65b9\u6848<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u4f7f\u7528\u5df2\u7d93\u6210\u70ba\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u96a8\u8457\u61c9\u7528\u7a0b\u5e8f\u7684\u8907\u96dc\u6027\u589e\u52a0\uff0c\u958b\u767c\u8005\u7d93\u5e38\u9700\u8981\u540c\u6642\u8a2a\u554f\u591a\u500b\u6578\u64da\u5eab\u3002Java\u4f5c\u70ba\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u7de8\u7a0b\u8a9e\u8a00\uff0c\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u5eab\u8a2a\u554f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Java\u8f15\u9b06\u61c9\u5c0d\u591a\u500b\u6578\u64da\u5eab\u65b9\u6848\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 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   String password = \"password\";\n\n        try {\n            \/\/ \u8a2a\u554fMySQL\u6578\u64da\u5eab\n            Connection conn1 = DriverManager.getConnection(url1, user, password);\n            Statement stmt1 = conn1.createStatement();\n            ResultSet rs1 = stmt1.executeQuery(\"SELECT * FROM table1\");\n            while (rs1.next()) {\n                System.out.println(\"MySQL: \" + rs1.getString(\"column1\"));\n            }\n            conn1.close();\n\n            \/\/ \u8a2a\u554fPostgreSQL\u6578\u64da\u5eab\n            Connection conn2 = DriverManager.getConnection(url2, user, password);\n            Statement stmt2 = conn2.createStatement();\n            ResultSet rs2 = stmt2.executeQuery(\"SELECT * FROM table2\");\n            while (rs2.next()) {\n                System.out.println(\"PostgreSQL: \" + rs2.getString(\"column1\"));\n            }\n            conn2.close();\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n<p>\u5728\u4e0a\u8ff0\u4ee3\u78bc\u4e2d\uff0c\u6211\u5011\u9996\u5148\u52a0\u8f09\u4e86\u5169\u500b\u4e0d\u540c\u6578\u64da\u5eab\u7684\u9023\u63a5\uff0c\u7136\u5f8c\u5206\u5225\u57f7\u884c\u67e5\u8a62\u4e26\u8655\u7406\u7d50\u679c\u3002\u9019\u7a2e\u65b9\u6cd5\u4f7f\u5f97\u958b\u767c\u8005\u80fd\u5920\u9748\u6d3b\u5730\u8a2a\u554f\u591a\u500b\u6578\u64da\u5eab\uff0c\u800c\u4e0d\u9700\u8981\u91cd\u8907\u7de8\u5beb\u5927\u91cf\u7684\u4ee3\u78bc\u3002<\/p>\n<h2 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config.setJdbcUrl(\"jdbc:mysql:\/\/localhost:3306\/db1\");\n        config.setUsername(\"username\");\n        config.setPassword(\"password\");\n        dataSource = new HikariDataSource(config);\n    }\n\n    public static void main(String[] args) {\n        try (Connection conn = dataSource.getConnection()) {\n            Statement stmt = conn.createStatement();\n            ResultSet rs = stmt.executeQuery(\"SELECT * FROM table1\");\n            while (rs.next()) {\n                System.out.println(\"MySQL: \" + rs.getString(\"column1\"));\n            }\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528HikariCP\u4f5c\u70ba\u9023\u63a5\u6c60\uff0c\u9019\u662f\u4e00\u500b\u9ad8\u6027\u80fd\u7684JDBC\u9023\u63a5\u6c60\u3002\u901a\u904e\u9019\u7a2e\u65b9\u5f0f\uff0c\u6211\u5011\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u9023\u63a5\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-EfuzvuVoPl\">\u7d50\u8ad6<\/h2>\n<p>Java\u63d0\u4f9b\u4e86\u591a\u7a2e\u65b9\u6cd5\u4f86\u5be6\u73fe\u9ad8\u6548\u7684\u6578\u64da\u5eab\u8a2a\u554f\uff0c\u7121\u8ad6\u662f\u901a\u904eJDBC\u76f4\u63a5\u8a2a\u554f\u591a\u500b\u6578\u64da\u5eab\uff0c\u9084\u662f\u4f7f\u7528\u9023\u63a5\u6c60\u6280\u8853\u4f86\u63d0\u9ad8\u6027\u80fd\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u80fd\u5920\u7c21\u5316\u958b\u767c\u904e\u7a0b\uff0c\u9084\u80fd\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u53ef\u64f4\u5c55\u6027\u548c\u6027\u80fd\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u90e8\u7f72\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u9019\u5c07\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u548c\u9ad8\u6548\u7684\u904b\u884c\u74b0\u5883\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22Java\u5982\u4f55\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u5eab\u8a2a\u554f\uff0c\u8f15\u9b06\u61c9\u5c0d\u591a\u500b\u6578\u64da\u5eab\u65b9\u6848\uff0c\u63d0\u5347\u61c9\u7528\u6027\u80fd\u8207\u9748\u6d3b\u6027\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-62029","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62029","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=62029"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62029\/revisions"}],"predecessor-version":[{"id":62030,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62029\/revisions\/62030"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62029"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62029"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62029"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}