{"id":62119,"date":"2024-10-13T16:21:25","date_gmt":"2024-10-13T08:21:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62119\/"},"modified":"2024-10-13T16:21:25","modified_gmt":"2024-10-13T08:21:25","slug":"java%e8%88%87sql%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e6%b8%ac%e8%a9%a6%e6%8a%80%e5%b7%a7-java%e9%80%a3%e6%8e%a5sql%e6%95%b8%e6%93%9a%e5%ba%ab%e6%b8%ac%e8%a9%a6","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62119\/","title":{"rendered":"Java\u8207SQL\u6578\u64da\u5eab\u9023\u63a5\u6e2c\u8a66\u6280\u5de7 (java\u9023\u63a5sql\u6578\u64da\u5eab\u6e2c\u8a66)"},"content":{"rendered":"<h1 id=\"java%e8%88%87sql%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5%e6%b8%ac%e8%a9%a6%e6%8a%80%e5%b7%a7-oOjKBlOYAZ\">Java\u8207SQL\u6578\u64da\u5eab\u9023\u63a5\u6e2c\u8a66\u6280\u5de7<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u8edf\u4ef6\u958b\u767c\u4e2d\uff0cJava\u8207SQL\u6578\u64da\u5eab\u7684\u9023\u63a5\u662f\u975e\u5e38\u91cd\u8981\u7684\u4e00\u74b0\u3002\u7121\u8ad6\u662f\u958b\u767c\u4f01\u696d\u7d1a\u61c9\u7528\u9084\u662f\u5c0f\u578b\u9805\u76ee\uff0c\u80fd\u5920\u6709\u6548\u5730\u6e2c\u8a66Java\u8207SQL\u6578\u64da\u5eab\u7684\u9023\u63a5\uff0c\u90fd\u662f\u78ba\u4fdd\u61c9\u7528\u7a69\u5b9a\u6027\u548c\u6578\u64da\u5b8c\u6574\u6027\u7684\u95dc\u9375\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u4e00\u4e9b\u6709\u6548\u7684\u6e2c\u8a66\u6280\u5de7\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u9032\u884cJava\u8207SQL\u6578\u64da\u5eab\u7684\u9023\u63a5\u6e2c\u8a66\u3002<\/p>\n<h2 id=\"1-%e7%a2%ba%e4%bf%9d%e7%92%b0%e5%a2%83%e9%85%8d%e7%bd%ae%e6%ad%a3%e7%a2%ba-oOjKBlOYAZ\">1. \u78ba\u4fdd\u74b0\u5883\u914d\u7f6e\u6b63\u78ba<\/h2>\n<p>\u5728\u9032\u884c\u4efb\u4f55\u6e2c\u8a66\u4e4b\u524d\uff0c\u9996\u5148\u8981\u78ba\u4fdd\u958b\u767c\u74b0\u5883\u7684\u914d\u7f6e\u6b63\u78ba\u3002\u9019\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5b89\u88dd\u6b63\u78ba\u7248\u672c\u7684Java Development Kit (JDK)\u3002<\/li>\n<li>\u5b89\u88dd\u4e26\u914d\u7f6eSQL\u6578\u64da\u5eab\uff08\u5982MySQL\u3001PostgreSQL\u7b49\uff09\u3002<\/li>\n<li>\u78ba\u4fdd\u6578\u64da\u5eab\u9a45\u52d5\u7a0b\u5e8f\u5df2\u6b63\u78ba\u6dfb\u52a0\u5230\u9805\u76ee\u4e2d\u3002<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5c0d\u65bcMySQL\u6578\u64da\u5eab\uff0c\u60a8\u9700\u8981\u5c07MySQL Connector\/J\u9a45\u52d5\u7a0b\u5e8f\u6dfb\u52a0\u5230\u60a8\u7684Java\u9805\u76ee\u4e2d\u3002\u9019\u53ef\u4ee5\u901a\u904eMaven\u6216\u624b\u52d5\u4e0b\u8f09JAR\u6587\u4ef6\u4f86\u5b8c\u6210\u3002<\/p>\n<h2 id=\"2-%e4%bd%bf%e7%94%a8jdbc%e9%80%b2%e8%a1%8c%e9%80%a3%e6%8e%a5-oOjKBlOYAZ\">2. \u4f7f\u7528JDBC\u9032\u884c\u9023\u63a5<\/h2>\n<p>Java Database Connectivity (JDBC) \u662fJava\u8207\u6578\u64da\u5eab\u4e4b\u9593\u7684\u6a4b\u6a11\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528JDBC\u9023\u63a5\u5230MySQL\u6578\u64da\u5eab\uff1a<\/p>\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            connection.close();\n        } catch (SQLException e) {\n            System.out.println(\"\u9023\u63a5\u5931\u6557: \" + e.getMessage());\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u5728\u9019\u6bb5\u4ee3\u78bc\u4e2d\uff0c\u60a8\u9700\u8981\u6839\u64da\u5be6\u969b\u60c5\u6cc1\u66ff\u63db\u6578\u64da\u5eab\u7684URL\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\u3002\u6e2c\u8a66\u9023\u63a5\u6642\uff0c\u6ce8\u610f\u6355\u7372SQLException\uff0c\u4ee5\u4fbf\u80fd\u5920\u7372\u53d6\u932f\u8aa4\u4fe1\u606f\u3002<\/p>\n<h2 id=\"3-%e6%b8%ac%e8%a9%a6%e6%95%b8%e6%93%9a%e5%ba%ab%e6%93%8d%e4%bd%9c-oOjKBlOYAZ\">3. \u6e2c\u8a66\u6578\u64da\u5eab\u64cd\u4f5c<\/h2>\n<p>\u6210\u529f\u9023\u63a5\u6578\u64da\u5eab\u5f8c\uff0c\u4e0b\u4e00\u6b65\u662f\u6e2c\u8a66\u57fa\u672c\u7684\u6578\u64da\u5eab\u64cd\u4f5c\uff0c\u4f8b\u5982\u67e5\u8a62\u3001\u63d2\u5165\u3001\u66f4\u65b0\u548c\u522a\u9664\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u67e5\u8a62\u793a\u4f8b\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\nimport java.sql.Statement;\n\npublic class DatabaseQuery {\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            Statement statement = connection.createStatement();\n            ResultSet resultSet = statement.executeQuery(\"SELECT * FROM your_table\");\n\n            while (resultSet.next()) {\n                System.out.println(\"\u6578\u64da: \" + resultSet.getString(\"your_column\"));\n            }\n\n            resultSet.close();\n            statement.close();\n            connection.close();\n        } catch (SQLException e) {\n            System.out.println(\"\u67e5\u8a62\u5931\u6557: \" + e.getMessage());\n        }\n    }\n}\n<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c55\u793a\u4e86\u5982\u4f55\u57f7\u884c\u67e5\u8a62\u4e26\u904d\u6b77\u7d50\u679c\u96c6\u3002\u78ba\u4fdd\u5728\u6e2c\u8a66\u904e\u7a0b\u4e2d\u6aa2\u67e5\u6578\u64da\u7684\u6b63\u78ba\u6027\u3002<\/p>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e5%96%ae%e5%85%83%e6%b8%ac%e8%a9%a6%e6%a1%86%e6%9e%b6-oOjKBlOYAZ\">4. \u4f7f\u7528\u55ae\u5143\u6e2c\u8a66\u6846\u67b6<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8\u6e2c\u8a66\u7684\u6548\u7387\u548c\u53ef\u9760\u6027\uff0c\u5efa\u8b70\u4f7f\u7528\u55ae\u5143\u6e2c\u8a66\u6846\u67b6\uff08\u5982JUnit\uff09\u4f86\u81ea\u52d5\u5316\u6e2c\u8a66\u904e\u7a0b\u3002\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6bcf\u6b21\u4ee3\u78bc\u8b8a\u66f4\u5f8c\uff0c\u6578\u64da\u5eab\u64cd\u4f5c\u4ecd\u7136\u6b63\u5e38\u3002<\/p>\n<pre><code>import org.junit.Test;\nimport static org.junit.Assert.*;\n\npublic class DatabaseTest {\n    @Test\n    public void testConnection() {\n        \/\/ \u5be6\u73fe\u9023\u63a5\u6e2c\u8a66\u908f\u8f2f\n        assertTrue(DatabaseConnection.testConnection());\n    }\n\n    @Test\n    public void testQuery() {\n        \/\/ \u5be6\u73fe\u67e5\u8a62\u6e2c\u8a66\u908f\u8f2f\n        assertEquals(\"\u9810\u671f\u7d50\u679c\", DatabaseQuery.getResult());\n    }\n}\n<\/code><\/pre>\n<p>\u901a\u904e\u9019\u7a2e\u65b9\u5f0f\uff0c\u60a8\u53ef\u4ee5\u5728\u958b\u767c\u904e\u7a0b\u4e2d\u53ca\u6642\u767c\u73fe\u554f\u984c\uff0c\u4e26\u9032\u884c\u4fee\u6b63\u3002<\/p>\n<h2 id=\"5-%e7%b8%bd%e7%b5%90-oOjKBlOYAZ\">5. \u7e3d\u7d50<\/h2>\n<p>Java\u8207SQL\u6578\u64da\u5eab\u7684\u9023\u63a5\u6e2c\u8a66\u662f\u958b\u767c\u904e\u7a0b\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u4e00\u90e8\u5206\u3002\u901a\u904e\u78ba\u4fdd\u74b0\u5883\u914d\u7f6e\u6b63\u78ba\u3001\u4f7f\u7528JDBC\u9032\u884c\u9023\u63a5\u3001\u6e2c\u8a66\u57fa\u672c\u7684\u6578\u64da\u5eab\u64cd\u4f5c\u4ee5\u53ca\u5229\u7528\u55ae\u5143\u6e2c\u8a66\u6846\u67b6\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u61c9\u7528\u7684\u7a69\u5b9a\u6027\u548c\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u652f\u6301\u60a8\u7684Java\u61c9\u7528\uff0cServer.HK\u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7a69\u5b9a\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1Java\u8207SQL\u6578\u64da\u5eab\u9023\u63a5\u6e2c\u8a66\u6280\u5de7\uff0c\u63d0\u5347\u6578\u64da\u5eab\u64cd\u4f5c\u6548\u7387\uff0c\u78ba\u4fdd\u61c9\u7528\u7a0b\u5f0f\u7a69\u5b9a\u6027\u8207\u6027\u80fd\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-62119","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62119","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=62119"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62119\/revisions"}],"predecessor-version":[{"id":62120,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62119\/revisions\/62120"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}