{"id":90247,"date":"2024-03-21T12:13:24","date_gmt":"2024-03-21T03:13:24","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e4%b8%80%e6%8b%ac%e3%81%97%e3%81%a6%e3%83%87%e3%83%bc%e3%82%bf%e3%82%92%e6%96%b0%e8%a6%8f%e8%bf%bd%e5%8a%a0%e3%81%be%e3%81%9f%e3%81%af%e6%9b%b4%e6%96%b0%e3%81%99%e3%82%8b%e6%96%b9\/"},"modified":"2024-04-04T09:40:30","modified_gmt":"2024-04-04T00:40:30","slug":"java%e3%81%a7%e4%b8%80%e6%8b%ac%e3%81%97%e3%81%a6%e3%83%87%e3%83%bc%e3%82%bf%e3%82%92%e6%96%b0%e8%a6%8f%e8%bf%bd%e5%8a%a0%e3%81%be%e3%81%9f%e3%81%af%e6%9b%b4%e6%96%b0%e3%81%99%e3%82%8b%e6%96%b9","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java%e3%81%a7%e4%b8%80%e6%8b%ac%e3%81%97%e3%81%a6%e3%83%87%e3%83%bc%e3%82%bf%e3%82%92%e6%96%b0%e8%a6%8f%e8%bf%bd%e5%8a%a0%e3%81%be%e3%81%9f%e3%81%af%e6%9b%b4%e6%96%b0%e3%81%99%e3%82%8b%e6%96%b9\/","title":{"rendered":"Java\u3067\u4e00\u62ec\u3057\u3066\u30c7\u30fc\u30bf\u3092\u65b0\u898f\u8ffd\u52a0\u307e\u305f\u306f\u66f4\u65b0\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"<p>Java\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\uff08JDBC\u306a\u3069\uff09\u3084\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\uff08CSV\u3084Excel\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d\u306a\u3069\uff09\u306b\u3088\u3063\u3066\u3001\u30c7\u30fc\u30bf\u3092\u5927\u91cf\u306b\u8ffd\u52a0\u307e\u305f\u306f\u5909\u66f4\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u305d\u308c\u305e\u308c\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n<p>\u5927\u91cf\u306e\u30c7\u30fc\u30bf\u8ffd\u52a0\u307e\u305f\u306f\u5909\u66f4 &#8211; \u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\uff08JDBC\uff09<\/p>\n<p>\u307e\u305a\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002JDBC\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u63a5\u7d9a\u3057\u3001Connection\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53d6\u5f97\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u5fc5\u8981\u306a\u9805\u76ee\u306b\u5fdc\u3058\u3066\u3001INSERT INTO \u6587\u306a\u3069\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u62ec\u3067\u8ffd\u52a0\u3059\u308b SQL \u6587\u3084\u3001UPDATE \u6587\u306a\u3069\u306e\u30c7\u30fc\u30bf\u3092\u4e00\u62ec\u3067\u4fee\u6b63\u3059\u308b SQL \u6587\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<p>SQL \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u5b9f\u884c\u3059\u308b\uff1aPreparedStatement \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f7f\u7528\u3057\u3066 SQL \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u30d0\u30c3\u30c1\u64cd\u4f5c\u306e\u5834\u5408\u306f\u3001addBatch() \u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u7528\u3057\u3066\u30d0\u30c3\u30c1\u306b\u8907\u6570\u306e SQL \u30b9\u30c6\u30fc\u30c8\u30e1\u30f3\u30c8\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>4. \u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u306e\u30b3\u30df\u30c3\u30c8: \u4e00\u62ec\u51e6\u7406\u304c\u5b8c\u4e86\u3057\u305f\u3089\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001commit()\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u3067\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u3092\u30b3\u30df\u30c3\u30c8\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u4ee5\u4e0b\u306f\u3001JDBC\u3092\u4f7f\u7528\u3057\u3066\u30c7\u30fc\u30bf\u3092\u30d0\u30c3\u30c1\u633f\u5165\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3059\u7c21\u5358\u306a\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n<pre class=\"post-pre\">\/\/\u00a0\u5bfc\u5165\u76f8\u5173\u7684\u5305\r\nimport\u00a0java.sql.Connection;\r\nimport\u00a0java.sql.DriverManager;\r\nimport\u00a0java.sql.PreparedStatement;\r\npublic\u00a0class\u00a0BatchInsertExample\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0public\u00a0static\u00a0void\u00a0main(String[]\u00a0args)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u5efa\u7acb\u6570\u636e\u5e93\u8fde\u63a5\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Connection\u00a0connection\u00a0=\u00a0DriverManager.getConnection(\"jdbc:mysql:\/\/localhost:3306\/\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0mydatabase\",\u00a0\"username\",\u00a0\"password\");\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u521b\u5efaSQL\u8bed\u53e5\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0String\u00a0sql\u00a0=\u00a0\"INSERT\u00a0INTO\u00a0employees\u00a0(name,\u00a0age)\u00a0VALUES\u00a0(?,\u00a0?)\";\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u521b\u5efaPreparedStatement\u5bf9\u8c61\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0PreparedStatement\u00a0statement\u00a0=\u00a0connection.prepareStatement(sql);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u6279\u91cf\u64cd\u4f5c\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for\u00a0(int\u00a0i\u00a0=\u00a01;\u00a0i\u00a0&lt;=\u00a0100;\u00a0i++)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u8bbe\u7f6e\u53c2\u6570\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0statement.setString(1,\u00a0\"Employee\u00a0\"\u00a0+\u00a0i);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0statement.setInt(2,\u00a025);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u6dfb\u52a0\u5230\u6279\u5904\u7406\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0statement.addBatch();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u6267\u884c\u6279\u91cf\u64cd\u4f5c\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0statement.executeBatch();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u63d0\u4ea4\u4e8b\u52a1\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0connection.commit();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u5173\u95ed\u8fde\u63a5\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0statement.close();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0connection.close();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch\u00a0(Exception\u00a0e)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}<\/pre>\n<p>\u4e00\u62ec\u3067\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u307e\u305f\u306f\u4fee\u6b63 &#8211; \u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\uff08CSV\u307e\u305f\u306fExcel\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d\uff09<\/p>\n<p>\u30c7\u30fc\u30bf\u304cCSV\u30d5\u30a1\u30a4\u30eb\u307e\u305f\u306fExcel\u30d5\u30a1\u30a4\u30eb\u306b\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u95a2\u9023\u3059\u308bJava\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066\u3053\u308c\u3089\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d\u3092\u5b9f\u884c\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\">\/\/\u00a0\u5bfc\u5165\u76f8\u5173\u7684\u5305\r\nimport\u00a0com.opencsv.CSVWriter;\r\nimport\u00a0java.io.FileWriter;\r\nimport\u00a0java.util.ArrayList;\r\nimport\u00a0java.util.List;\r\npublic\u00a0class\u00a0BatchInsertCSVExample\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0public\u00a0static\u00a0void\u00a0main(String[]\u00a0args)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0try\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u521b\u5efaCSVWriter\u5bf9\u8c61\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0CSVWriter\u00a0writer\u00a0=\u00a0new\u00a0CSVWriter(new\u00a0FileWriter(\"data.csv\"));\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u521b\u5efa\u6570\u636e\u884c\u5217\u8868\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0List&lt;string[]&gt;\u00a0data\u00a0=\u00a0new\u00a0ArrayList&lt;&gt;();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u6279\u91cf\u64cd\u4f5c\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0for\u00a0(int\u00a0i\u00a0=\u00a01;\u00a0i\u00a0&lt;=\u00a0100;\u00a0i++)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u521b\u5efa\u6570\u636e\u884c\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0String[]\u00a0row\u00a0=\u00a0{\"Employee\u00a0\"\u00a0+\u00a0i,\u00a0\"25\"};\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u6dfb\u52a0\u5230\u6570\u636e\u5217\u8868\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0data.add(row);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u5199\u5165\u6570\u636e\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0writer.writeAll(data);\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\/\/\u00a0\u5173\u95edCSVWriter\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0writer.close();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\u00a0catch\u00a0(Exception\u00a0e)\u00a0{\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0e.printStackTrace();\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}\r\n\u00a0\u00a0\u00a0\u00a0}\r\n}&lt;\/string[]&gt;<\/pre>\n<p>\u3053\u3061\u3089\u306e\u4f8b\u306fOpenCSV\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u304c\u3001CSV\u3084Excel\u30d5\u30a1\u30a4\u30eb\u306e\u51e6\u7406\u306b\u306f\u3001\u76ee\u7684\u306b\u9069\u3057\u305f\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u5b9f\u969b\u306e\u4f7f\u7528\u6642\u306b\u306f\u3001\u72b6\u6cc1\u306b\u5fdc\u3058\u3066\u8abf\u6574\u3084\u5909\u66f4\u304c\u5fc5\u8981\u306b\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Java\u3067\u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u64cd\u4f5c\uff08JDBC\u306a\u3069\uff09\u3084\u30d5\u30a1\u30a4\u30eb\u64cd\u4f5c\uff08CSV\u3084Excel\u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u66f8\u304d\u306a\u3069\uff09\u306b\u3088\u3063\u3066\u3001\u30c7\u30fc\u30bf\u3092\u5927\u91cf\u306b\u8ffd\u52a0\u307e\u305f\u306f\u5909\u66f4\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u3001\u305d\u308c\u305e\u308c\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002 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