{"id":183976,"date":"2024-11-10T09:18:24","date_gmt":"2024-11-10T01:18:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/183976\/"},"modified":"2024-11-10T09:18:25","modified_gmt":"2024-11-10T01:18:25","slug":"%e4%bd%bf%e7%94%a8poi%e6%8a%8a%e6%9f%a5%e8%a9%a2%e5%88%b0%e7%9a%84%e6%95%b8%e6%93%9a%e8%a1%a8%e6%95%b8%e6%93%9a%e5%b0%8e%e5%87%ba%e5%88%b0excel%e4%b8%ad%ef%bc%8c%e4%b8%80%e5%80%8b%e8%a1%a8%e4%b8%80","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/183976\/","title":{"rendered":"\u4f7f\u7528POI\u628a\u67e5\u8a62\u5230\u7684\u6578\u64da\u8868\u6578\u64da\u5c0e\u51fa\u5230Excel\u4e2d\uff0c\u4e00\u500b\u8868\u4e00\u500bSheet"},"content":{"rendered":"

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Apache POI\u7c21\u4ecb<\/h2>\n

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\n<dependency>\n    <groupId>org.apache.poi<\/groupId>\n    <artifactId>poi<\/artifactId>\n    <version>5.2.3<\/version>\n<\/dependency>\n<dependency>\n    <groupId>org.apache.poi<\/groupId>\n    <artifactId>poi-ooxml<\/artifactId>\n    <version>5.2.3<\/version>\n<\/dependency>\n<\/code><\/pre>\n
\u6578\u64da\u67e5\u8a62<\/h2>\n
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\nimport java.sql.Connection;\nimport java.sql.DriverManager;\nimport java.sql.ResultSet;\nimport java.sql.Statement;\n\npublic class DatabaseQuery {\n    public static ResultSet getData(String query) throws Exception {\n        Connection conn = DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/your_database\", \"username\", \"password\");\n        Statement stmt = conn.createStatement();\n        return stmt.executeQuery(query);\n    }\n}\n<\/code><\/pre>\n
\u5c0e\u51fa\u6578\u64da\u5230Excel<\/h2>\n
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\nimport org.apache.poi.ss.usermodel.*;\nimport org.apache.poi.xssf.usermodel.XSSFWorkbook;\n\nimport java.io.FileOutputStream;\n\npublic class ExcelExporter {\n    public static void exportToExcel(ResultSet resultSet, String sheetName) throws Exception {\n        Workbook workbook = new XSSFWorkbook();\n        Sheet sheet = workbook.createSheet(sheetName);\n\n        \/\/ \u5275\u5efa\u8868\u982d\n        Row headerRow = sheet.createRow(0);\n        for (int i = 0; i < resultSet.getMetaData().getColumnCount(); i++) {\n            Cell cell = headerRow.createCell(i);\n            cell.setCellValue(resultSet.getMetaData().getColumnName(i + 1));\n        }\n\n        \/\/ \u586b\u5145\u6578\u64da\n        int rowNum = 1;\n        while (resultSet.next()) {\n            Row row = sheet.createRow(rowNum++);\n            for (int i = 0; i < resultSet.getMetaData().getColumnCount(); i++) {\n                Cell cell = row.createCell(i);\n                cell.setCellValue(resultSet.getString(i + 1));\n            }\n        }\n\n        \/\/ \u5beb\u5165\u6587\u4ef6\n        try (FileOutputStream fileOut = new FileOutputStream("output.xlsx")) {\n            workbook.write(fileOut);\n        }\n        workbook.close();\n    }\n}\n<\/code><\/pre>\n
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\npublic class Main {\n    public static void main(String[] args) {\n        try {\n            String[] queries = {\n                \"SELECT * FROM table1\",\n                \"SELECT * FROM table2\"\n            };\n            String[] sheetNames = {\"Table1\", \"Table2\"};\n\n            for (int i = 0; i < queries.length; i++) {\n                ResultSet resultSet = DatabaseQuery.getData(queries[i]);\n                ExcelExporter.exportToExcel(resultSet, sheetNames[i]);\n            }\n        } catch (Exception e) {\n            e.printStackTrace();\n        }\n    }\n}\n<\/code><\/pre>\n
\u7e3d\u7d50<\/h2>\n
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