{"id":62433,"date":"2024-10-13T18:56:18","date_gmt":"2024-10-13T10:56:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/62433\/"},"modified":"2024-10-13T18:56:18","modified_gmt":"2024-10-13T10:56:18","slug":"java%e7%a8%8b%e5%ba%8f%e5%af%a6%e7%8f%be%e9%81%a0%e7%a8%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e5%b0%8e%e5%87%ba-java%e5%b0%8e%e5%87%ba%e9%81%a0%e7%a8%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/62433\/","title":{"rendered":"Java\u7a0b\u5e8f\u5be6\u73fe\u9060\u7a0b\u6578\u64da\u5eab\u8868\u7684\u5c0e\u51fa (java\u5c0e\u51fa\u9060\u7a0b\u6578\u64da\u5eab\u8868)"},"content":{"rendered":"<h1 id=\"java%e7%a8%8b%e5%ba%8f%e5%af%a6%e7%8f%be%e9%81%a0%e7%a8%8b%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8%e7%9a%84%e5%b0%8e%e5%87%ba-oduRJlSqNI\">Java\u7a0b\u5e8f\u5be6\u73fe\u9060\u7a0b\u6578\u64da\u5eab\u8868\u7684\u5c0e\u51fa<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0c\u6578\u64da\u7684\u7ba1\u7406\u548c\u8655\u7406\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u5c0d\u65bc\u958b\u767c\u8005\u4f86\u8aaa\uff0c\u80fd\u5920\u6709\u6548\u5730\u5c0e\u51fa\u9060\u7a0b\u6578\u64da\u5eab\u8868\u662f\u4e00\u9805\u57fa\u672c\u6280\u80fd\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528Java\u4f86\u5be6\u73fe\u9060\u7a0b\u6578\u64da\u5eab\u8868\u7684\u5c0e\u51fa\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u4ee3\u78bc\u793a\u4f8b\u548c\u6b65\u9a5f\u8aaa\u660e\u3002<\/p>\n<h2 id=\"1-%e7%92%b0%e5%a2%83%e6%ba%96%e5%82%99-oduRJlSqNI\">1. \u74b0\u5883\u6e96\u5099<\/h2>\n<p>\u5728\u958b\u59cb\u4e4b\u524d\uff0c\u60a8\u9700\u8981\u78ba\u4fdd\u4ee5\u4e0b\u74b0\u5883\u5df2\u7d93\u8a2d\u7f6e\u597d\uff1a<\/p>\n<ul>\n<li>Java\u958b\u767c\u74b0\u5883\uff08JDK\uff09<\/li>\n<li>\u9069\u5408\u7684IDE\uff08\u5982Eclipse\u6216IntelliJ IDEA\uff09<\/li>\n<li>\u9060\u7a0b\u6578\u64da\u5eab\u7684\u9023\u63a5\u4fe1\u606f\uff08\u5982IP\u5730\u5740\u3001\u7aef\u53e3\u3001\u7528\u6236\u540d\u548c\u5bc6\u78bc\uff09<\/li>\n<li>\u76f8\u61c9\u7684JDBC\u9a45\u52d5\u7a0b\u5e8f<\/li>\n<\/ul>\n<h2 id=\"2-%e9%80%a3%e6%8e%a5%e9%81%a0%e7%a8%8b%e6%95%b8%e6%93%9a%e5%ba%ab-oduRJlSqNI\">2. \u9023\u63a5\u9060\u7a0b\u6578\u64da\u5eab<\/h2>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u4f7f\u7528JDBC\u4f86\u9023\u63a5\u9060\u7a0b\u6578\u64da\u5eab\u3002\u4ee5\u4e0b\u662f\u9023\u63a5MySQL\u6578\u64da\u5eab\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.SQLException;\n\npublic class DatabaseConnection {\n    public static Connection connect() {\n        Connection connection = null;\n        String url = \"jdbc:mysql:\/\/:\/\";\n        String user = \"\";\n        String password = \"\";\n\n        try {\n            connection = DriverManager.getConnection(url, user, password);\n            System.out.println(\"\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff01\");\n        } catch (SQLException e) {\n            System.out.println(\"\u6578\u64da\u5eab\u9023\u63a5\u5931\u6557\uff1a\" + e.getMessage());\n        }\n        return connection;\n    }\n}\n<\/code><\/pre>\n<h2 id=\"3-%e5%b0%8e%e5%87%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a1%a8-oduRJlSqNI\">3. \u5c0e\u51fa\u6578\u64da\u5eab\u8868<\/h2>\n<p>\u4e00\u65e6\u6210\u529f\u9023\u63a5\u5230\u6578\u64da\u5eab\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528SQL\u67e5\u8a62\u4f86\u5c0e\u51fa\u6578\u64da\u3002\u4ee5\u4e0b\u662f\u5c0e\u51fa\u6578\u64da\u5eab\u8868\u7684\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>import java.sql.Connection;\nimport java.sql.ResultSet;\nimport java.sql.SQLException;\nimport java.sql.Statement;\nimport java.io.FileWriter;\nimport java.io.IOException;\n\npublic class ExportTable {\n    public static void export(String tableName) {\n        Connection connection = DatabaseConnection.connect();\n        String query = \"SELECT * FROM \" + tableName;\n\n        try (Statement statement = connection.createStatement();\n             ResultSet resultSet = statement.executeQuery(query);\n             FileWriter fileWriter = new FileWriter(tableName + \".csv\")) {\n\n            int columnCount = resultSet.getMetaData().getColumnCount();\n\n            \/\/ \u5beb\u5165\u8868\u982d\n            for (int i = 1; i &lt;= columnCount; i++) {\n                fileWriter.append(resultSet.getMetaData().getColumnName(i));\n                if (i &lt; columnCount) fileWriter.append(&quot;,&quot;);\n            }\n            fileWriter.append(&quot;n&quot;);\n\n            \/\/ \u5beb\u5165\u6578\u64da\n            while (resultSet.next()) {\n                for (int i = 1; i &lt;= columnCount; i++) {\n                    fileWriter.append(resultSet.getString(i));\n                    if (i &lt; columnCount) fileWriter.append(&quot;,&quot;);\n                }\n                fileWriter.append(&quot;n&quot;);\n            }\n            System.out.println(&quot;\u6578\u64da\u5c0e\u51fa\u6210\u529f\uff01&quot;);\n\n        } catch (SQLException | IOException e) {\n            System.out.println(&quot;\u5c0e\u51fa\u5931\u6557\uff1a&quot; + e.getMessage());\n        } finally {\n            try {\n                if (connection != null) connection.close();\n            } catch (SQLException e) {\n                System.out.println(&quot;\u95dc\u9589\u9023\u63a5\u5931\u6557\uff1a&quot; + e.getMessage());\n            }\n        }\n    }\n}\n<\/code><\/pre>\n<h2 id=\"4-%e4%bd%bf%e7%94%a8%e7%a4%ba%e4%be%8b-oduRJlSqNI\">4. \u4f7f\u7528\u793a\u4f8b<\/h2>\n<p>\u60a8\u53ef\u4ee5\u901a\u904e\u4ee5\u4e0b\u4ee3\u78bc\u4f86\u8abf\u7528\u5c0e\u51fa\u65b9\u6cd5\uff1a<\/p>\n<pre><code>public class Main {\n    public static void main(String[] args) {\n        ExportTable.export(\"your_table_name\");\n    }\n}\n<\/code><\/pre>\n<h2 id=\"5-%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-oduRJlSqNI\">5. \u6ce8\u610f\u4e8b\u9805<\/h2>\n<ul>\n<li>\u78ba\u4fdd\u60a8\u6709\u8db3\u5920\u7684\u6b0a\u9650\u4f86\u8a2a\u554f\u548c\u5c0e\u51fa\u6578\u64da\u5eab\u8868\u3002<\/li>\n<li>\u5728\u5c0e\u51fa\u5927\u91cf\u6578\u64da\u6642\uff0c\u8acb\u8003\u616e\u6027\u80fd\u554f\u984c\uff0c\u53ef\u80fd\u9700\u8981\u5206\u6279\u5c0e\u51fa\u3002<\/li>\n<li>\u6839\u64da\u9700\u8981\u8655\u7406\u6578\u64da\u683c\u5f0f\uff0c\u4f8b\u5982CSV\u6216JSON\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-oduRJlSqNI\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4ee5\u4e0a\u6b65\u9a5f\uff0c\u60a8\u53ef\u4ee5\u8f15\u9b06\u5730\u4f7f\u7528Java\u5be6\u73fe\u9060\u7a0b\u6578\u64da\u5eab\u8868\u7684\u5c0e\u51fa\u3002\u9019\u4e0d\u50c5\u80fd\u63d0\u9ad8\u60a8\u7684\u958b\u767c\u6548\u7387\uff0c\u9084\u80fd\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u3002\u5982\u679c\u60a8\u9700\u8981\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u670d\u52d9\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u3002\u7121\u8ad6\u662f\u6578\u64da\u5b58\u5132\u9084\u662f\u6578\u64da\u8655\u7406\uff0c\u9078\u64c7\u5408\u9069\u7684\u670d\u52d9\u5668\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u4f7f\u7528Java\u7a0b\u5e8f\u5be6\u73fe\u9060\u7a0b\u6578\u64da\u5eab\u8868\u7684\u5c0e\u51fa\uff0c\u7c21\u5316\u6578\u64da\u7ba1\u7406\u548c\u5099\u4efd\u904e\u7a0b\uff0c\u63d0\u5347\u5de5\u4f5c\u6548\u7387\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-62433","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62433","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=62433"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62433\/revisions"}],"predecessor-version":[{"id":62434,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/62433\/revisions\/62434"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=62433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=62433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=62433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}