{"id":19013,"date":"2024-03-16T10:38:11","date_gmt":"2024-03-16T01:38:11","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7poi%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6excel%e3%83%87%e3%83%bc%e3%82%bf%e3%82%92%e3%82%a8%e3%82%af%e3%82%b9%e3%83%9d%e3%83%bc%e3%83%88%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af\/"},"modified":"2025-08-06T19:13:48","modified_gmt":"2025-08-06T10:13:48","slug":"java%e3%81%a7poi%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6excel%e3%83%87%e3%83%bc%e3%82%bf%e3%82%92%e3%82%a8%e3%82%af%e3%82%b9%e3%83%9d%e3%83%bc%e3%83%88%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7poi%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6excel%e3%83%87%e3%83%bc%e3%82%bf%e3%82%92%e3%82%a8%e3%82%af%e3%82%b9%e3%83%9d%e3%83%bc%e3%83%88%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95%e3%81%af\/","title":{"rendered":"Java\u3067POI\u3092\u4f7f\u3063\u3066Excel\u30c7\u30fc\u30bf\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"<p>Java\u3067Excel\u30c7\u30fc\u30bf\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u306b\u306f\u3001POI\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306fExcel\u30d5\u30a1\u30a4\u30eb\u306b\u30c7\u30fc\u30bf\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\uff1a<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> org.apache.poi.ss.usermodel.*;\r\n<span class=\"hljs-keyword\">import<\/span> org.apache.poi.xssf.usermodel.XSSFWorkbook;\r\n\r\n<span class=\"hljs-keyword\">import<\/span> java.io.FileOutputStream;\r\n<span class=\"hljs-keyword\">import<\/span> java.io.IOException;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.ArrayList;\r\n<span class=\"hljs-keyword\">import<\/span> java.util.List;\r\n\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">ExcelExporter<\/span> {\r\n    <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">void<\/span> <span class=\"hljs-title function_\">main<\/span><span class=\"hljs-params\">(String[] args)<\/span> {\r\n        <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u6570\u636e\u5217\u8868<\/span>\r\n        List&lt;Person&gt; personList = <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">ArrayList<\/span>&lt;&gt;();\r\n        personList.add(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Person<\/span>(<span class=\"hljs-string\">\"John\"<\/span>, <span class=\"hljs-number\">25<\/span>));\r\n        personList.add(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Person<\/span>(<span class=\"hljs-string\">\"Jane\"<\/span>, <span class=\"hljs-number\">30<\/span>));\r\n        personList.add(<span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">Person<\/span>(<span class=\"hljs-string\">\"David\"<\/span>, <span class=\"hljs-number\">35<\/span>));\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u5de5\u4f5c\u7c3f<\/span>\r\n        <span class=\"hljs-type\">Workbook<\/span> <span class=\"hljs-variable\">workbook<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">XSSFWorkbook<\/span>();\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u8868\u683c<\/span>\r\n        <span class=\"hljs-type\">Sheet<\/span> <span class=\"hljs-variable\">sheet<\/span> <span class=\"hljs-operator\">=<\/span> workbook.createSheet(<span class=\"hljs-string\">\"Person Data\"<\/span>);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u8868\u5934<\/span>\r\n        <span class=\"hljs-type\">Row<\/span> <span class=\"hljs-variable\">header<\/span> <span class=\"hljs-operator\">=<\/span> sheet.createRow(<span class=\"hljs-number\">0<\/span>);\r\n        header.createCell(<span class=\"hljs-number\">0<\/span>).setCellValue(<span class=\"hljs-string\">\"Name\"<\/span>);\r\n        header.createCell(<span class=\"hljs-number\">1<\/span>).setCellValue(<span class=\"hljs-string\">\"Age\"<\/span>);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u521b\u5efa\u6570\u636e\u884c<\/span>\r\n        <span class=\"hljs-type\">int<\/span> <span class=\"hljs-variable\">rowNum<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-number\">1<\/span>;\r\n        <span class=\"hljs-keyword\">for<\/span> (Person person : personList) {\r\n            <span class=\"hljs-type\">Row<\/span> <span class=\"hljs-variable\">row<\/span> <span class=\"hljs-operator\">=<\/span> sheet.createRow(rowNum++);\r\n            row.createCell(<span class=\"hljs-number\">0<\/span>).setCellValue(person.getName());\r\n            row.createCell(<span class=\"hljs-number\">1<\/span>).setCellValue(person.getAge());\r\n        }\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u8c03\u6574\u5217\u5bbd\u5ea6<\/span>\r\n        sheet.autoSizeColumn(<span class=\"hljs-number\">0<\/span>);\r\n        sheet.autoSizeColumn(<span class=\"hljs-number\">1<\/span>);\r\n\r\n        <span class=\"hljs-comment\">\/\/ \u4fdd\u5b58\u6587\u4ef6<\/span>\r\n        <span class=\"hljs-keyword\">try<\/span> (<span class=\"hljs-type\">FileOutputStream<\/span> <span class=\"hljs-variable\">outputStream<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FileOutputStream<\/span>(<span class=\"hljs-string\">\"person_data.xlsx\"<\/span>)) {\r\n            workbook.write(outputStream);\r\n        } <span class=\"hljs-keyword\">catch<\/span> (IOException e) {\r\n            e.printStackTrace();\r\n        }\r\n\r\n        System.out.println(<span class=\"hljs-string\">\"Excel\u6587\u4ef6\u5bfc\u51fa\u6210\u529f\uff01\"<\/span>);\r\n    }\r\n\r\n    <span class=\"hljs-comment\">\/\/ \u5b9a\u4e49\u6570\u636e\u6a21\u578b<\/span>\r\n    <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-keyword\">static<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">Person<\/span> {\r\n        <span class=\"hljs-keyword\">private<\/span> String name;\r\n        <span class=\"hljs-keyword\">private<\/span> <span class=\"hljs-type\">int<\/span> age;\r\n\r\n        <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-title function_\">Person<\/span><span class=\"hljs-params\">(String name, <span class=\"hljs-type\">int<\/span> age)<\/span> {\r\n            <span class=\"hljs-built_in\">this<\/span>.name = name;\r\n            <span class=\"hljs-built_in\">this<\/span>.age = age;\r\n        }\r\n\r\n        <span class=\"hljs-keyword\">public<\/span> String <span class=\"hljs-title function_\">getName<\/span><span class=\"hljs-params\">()<\/span> {\r\n            <span class=\"hljs-keyword\">return<\/span> name;\r\n        }\r\n\r\n        <span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-type\">int<\/span> <span class=\"hljs-title function_\">getAge<\/span><span class=\"hljs-params\">()<\/span> {\r\n            <span class=\"hljs-keyword\">return<\/span> age;\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>\u3053\u306e\u4f8b\u3067\u306f\u3001XSSFWorkbook\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u65b0\u3057\u3044\u30ef\u30fc\u30af\u30d6\u30c3\u30af\u3092\u4f5c\u6210\u3057\u3001\u300cPerson Data\u300d\u3068\u3044\u3046\u540d\u524d\u306e\u30b7\u30fc\u30c8\u3092\u4f5c\u6210\u3057\u307e\u3057\u305f\u3002createRow\uff08\uff09\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30d8\u30c3\u30c0\u30fc\u3068\u30c7\u30fc\u30bf\u884c\u3092\u4f5c\u6210\u3057\u3001setCellValue\uff08\uff09\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30bb\u30eb\u306e\u5024\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u305f\u3002\u6700\u5f8c\u306b\u3001FileOutputStream\u3092\u4f7f\u7528\u3057\u3066\u30ef\u30fc\u30af\u30d6\u30c3\u30af\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>\u3053\u306e\u4f8b\u3067\u306fXSSFWorkbook\u30af\u30e9\u30b9\u304c\u4f7f\u7528\u3055\u308c\u3066\u304a\u308a\u3001\u3053\u306e\u3053\u3068\u306f\u30a8\u30af\u30bb\u30eb\u30d5\u30a1\u30a4\u30eb\u306e\u51fa\u529b\u304c.xlsx\u5f62\u5f0f\u3067\u3042\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002\u3082\u3057.xls\u5f62\u5f0f\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u51fa\u529b\u3057\u305f\u3044\u5834\u5408\u306f\u3001HSSFWorkbook\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u30ef\u30fc\u30af\u30d6\u30c3\u30af\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067Excel\u30c7\u30fc\u30bf\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u306b\u306f\u3001POI\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306fExcel\u30d5\u30a1\u30a4\u30eb\u306b\u30c7\u30fc\u30bf\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\uff1a import org.apache.poi.ss.use [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-19013","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java\u3067POI\u3092\u4f7f\u3063\u3066Excel\u30c7\u30fc\u30bf\u3092\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3059\u308b\u65b9\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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