{"id":666,"date":"2022-08-06T01:06:59","date_gmt":"2022-10-22T22:51:40","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/index.php\/2023\/11\/30\/java-qr%e3%82%b3%e3%83%bc%e3%83%89%e3%82%b8%e3%82%a7%e3%83%8d%e3%83%ac%e3%83%bc%e3%82%bf%e3%83%bc-zxing%e3%81%ae%e4%be%8b\/"},"modified":"2025-08-01T01:29:45","modified_gmt":"2025-07-31T16:29:45","slug":"java-qr%e3%82%b3%e3%83%bc%e3%83%89%e3%82%b8%e3%82%a7%e3%83%8d%e3%83%ac%e3%83%bc%e3%82%bf%e3%83%bc-zxing%e3%81%ae%e4%be%8b","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/java-qr%e3%82%b3%e3%83%bc%e3%83%89%e3%82%b8%e3%82%a7%e3%83%8d%e3%83%ac%e3%83%bc%e3%82%bf%e3%83%bc-zxing%e3%81%ae%e4%be%8b\/","title":{"rendered":"Java QR\u30b3\u30fc\u30c9\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc – zxing\u306e\u4f8b"},"content":{"rendered":"

\u4eca\u65e5\u306f\u3001Java\u306eQR\u30b3\u30fc\u30c9\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u3082\u3057\u3001\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3084\u30ac\u30b8\u30a7\u30c3\u30c8\u306b\u8a73\u3057\u3044\u306e\u3067\u3042\u308c\u3070\u3001QR\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u306f\u3054\u5b58\u77e5\u3067\u3057\u3087\u3046\u3002\u6700\u8fd1\u3067\u306f\u3001\u30d6\u30ed\u30b0\u3084\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3001\u4e00\u90e8\u306e\u516c\u5171\u306e\u5834\u6240\u3067\u3082\u3088\u304f\u898b\u304b\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u7279\u306b\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u3067\u306f\u975e\u5e38\u306b\u4eba\u6c17\u304c\u3042\u308a\u3001QR\u30b3\u30fc\u30c9\u30b9\u30ad\u30e3\u30ca\u30fc\u30a2\u30d7\u30ea\u3092\u4f7f\u3063\u3066QR\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u53d6\u308b\u3068\u3001\u30c6\u30ad\u30b9\u30c8\u3092\u8868\u793a\u3057\u305f\u308a\u3001URL\u306e\u5834\u5408\u306f\u30a6\u30a7\u30d6\u30da\u30fc\u30b8\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3057\u305f\u308a\u3057\u307e\u3059\u3002\u6700\u8fd1\u3053\u308c\u3092\u898b\u3064\u3051\u3066\u3068\u3066\u3082\u8208\u5473\u6df1\u3044\u3068\u601d\u3044\u307e\u3057\u305f\u3002\u3082\u3057QR\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u77e5\u308a\u305f\u3044\u306e\u3067\u3042\u308c\u3070\u3001Wikipedia\u306eQR\u30b3\u30fc\u30c9\u30da\u30fc\u30b8\u3067\u591a\u304f\u306e\u6709\u76ca\u306a\u60c5\u5831\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

Java\u3067QR\u30b3\u30fc\u30c9\u3092\u751f\u6210\u3059\u308b\u3082\u306e<\/h2>\n

\u591a\u304f\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3067QR\u30b3\u30fc\u30c9\u306e\u753b\u50cf\u3092\u898b\u3064\u3051\u305f\u306e\u3067\u3001Java\u306eQR\u30b3\u30fc\u30c9\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u63a2\u3057\u59cb\u3081\u307e\u3057\u305f\u3002\u3044\u304f\u3064\u304b\u306e\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9API\u3092\u8abf\u3079\u305f\u7d50\u679c\u3001zxing\u304c\u30b7\u30f3\u30d7\u30eb\u3067\u4f7f\u3044\u3084\u3059\u3044\u3068\u5206\u304b\u308a\u307e\u3057\u305f\u3002\u3082\u3057QR\u30b3\u30fc\u30c9\u306e\u753b\u50cf\u3092\u751f\u6210\u3057\u305f\u3044\u306e\u3067\u3042\u308c\u3070\u3001\u305d\u306e\u30b3\u30a2\u30e9\u30a4\u30d6\u30e9\u30ea\u3060\u3051\u3092\u5fc5\u8981\u3068\u3057\u307e\u3059\u3002Maven\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306b\u4ee5\u4e0b\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u8ffd\u52a0\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

<dependency>\r\n\t<groupId>com.google.zxing<\/groupId>\r\n\t<artifactId>core<\/artifactId>\r\n\t<version>3.3.2<\/version>\r\n<\/dependency>\r\n<\/code><\/pre>\n
\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u3092\u901a\u3058\u3066QR\u753b\u50cf\u3092\u8aad\u307f\u8fbc\u307f\u305f\u3044\u5834\u5408\u306f\u3001JavaSE\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u4f9d\u5b58\u95a2\u4fc2\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002<\/p>\n
<dependency>\r\n\t<groupId>com.google.zxing<\/groupId>\r\n\t<artifactId>javase<\/artifactId>\r\n\t<version>3.3.2<\/version>\r\n<\/dependency>\r\n<\/code><\/pre>\n
\"zxing<\/div>\n
ZXing\u306e\u4f8b\u3092\u4f7f\u7528\u3057\u3066\u3001QR\u30b3\u30fc\u30c9\u306e\u753b\u50cf\u3092\u751f\u6210\u3059\u308b\u3002<\/h3>\n
\u300cZxing API\u3092\u4f7f\u7528\u3057\u3066QR\u30b3\u30fc\u30c9\u753b\u50cf\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u304c\u3053\u3061\u3089\u3067\u3059\u3002GenerateQRCode.java\u3067\u3059\u3002\u300d<\/p>\n
package com.scdev.qrcode.generator;\r\n\r\nimport java.awt.Color;\r\nimport java.awt.Graphics2D;\r\nimport java.awt.image.BufferedImage;\r\nimport java.io.File;\r\nimport java.io.IOException;\r\nimport java.util.Hashtable;\r\n\r\nimport javax.imageio.ImageIO;\r\n\r\nimport com.google.zxing.BarcodeFormat;\r\nimport com.google.zxing.EncodeHintType;\r\nimport com.google.zxing.WriterException;\r\nimport com.google.zxing.common.BitMatrix;\r\nimport com.google.zxing.qrcode.QRCodeWriter;\r\nimport com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;\r\n\r\npublic class GenerateQRCode {\r\n\r\n\tpublic static void main(String[] args) throws WriterException, IOException {\r\n\t\tString qrCodeText = \"https:\/\/www.scdev.com\";\r\n\t\tString filePath = \"JD.png\";\r\n\t\tint size = 125;\r\n\t\tString fileType = \"png\";\r\n\t\tFile qrFile = new File(filePath);\r\n\t\tcreateQRImage(qrFile, qrCodeText, size, fileType);\r\n\t\tSystem.out.println(\"DONE\");\r\n\t}\r\n\r\n\tprivate static void createQRImage(File qrFile, String qrCodeText, int size, String fileType)\r\n\t\t\tthrows WriterException, IOException {\r\n\t\t\/\/ Create the ByteMatrix for the QR-Code that encodes the given String\r\n\t\tHashtable<EncodeHintType, ErrorCorrectionLevel> hintMap = new Hashtable<>();\r\n\t\thintMap.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);\r\n\t\tQRCodeWriter qrCodeWriter = new QRCodeWriter();\r\n\t\tBitMatrix byteMatrix = qrCodeWriter.encode(qrCodeText, BarcodeFormat.QR_CODE, size, size, hintMap);\r\n\t\t\/\/ Make the BufferedImage that are to hold the QRCode\r\n\t\tint matrixWidth = byteMatrix.getWidth();\r\n\t\tBufferedImage image = new BufferedImage(matrixWidth, matrixWidth, BufferedImage.TYPE_INT_RGB);\r\n\t\timage.createGraphics();\r\n\r\n\t\tGraphics2D graphics = (Graphics2D) image.getGraphics();\r\n\t\tgraphics.setColor(Color.WHITE);\r\n\t\tgraphics.fillRect(0, 0, matrixWidth, matrixWidth);\r\n\t\t\/\/ Paint and save the image using the ByteMatrix\r\n\t\tgraphics.setColor(Color.BLACK);\r\n\r\n\t\tfor (int i = 0; i < matrixWidth; i++) {\r\n\t\t\tfor (int j = 0; j < matrixWidth; j++) {\r\n\t\t\t\tif (byteMatrix.get(i, j)) {\r\n\t\t\t\t\tgraphics.fillRect(i, j, 1, 1);\r\n\t\t\t\t}\r\n\t\t\t}\r\n\t\t}\r\n\t\tImageIO.write(image, fileType, qrFile);\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n
\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u4f5c\u6210\u3055\u308c\u305fQR\u30b3\u30fc\u30c9\u306e\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u304c\u3053\u3061\u3089\u306b\u3042\u308a\u307e\u3059\u3002\u30e2\u30d0\u30a4\u30eb\u306eQR\u30b3\u30fc\u30c9\u30b9\u30ad\u30e3\u30ca\u30fc\u30a2\u30d7\u30ea\u3092\u4f7f\u7528\u3057\u3066\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u305d\u308c\u306fJournalDev\u30db\u30fc\u30e0\u306eURL\u3092\u6307\u3057\u3066\u3044\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n
ZXing\u306e\u4f8b\u3092\u4f7f\u7528\u3057\u3066QR\u30b3\u30fc\u30c9\u3092\u8aad\u307f\u53d6\u308b\u65b9\u6cd5<\/h3>\n
\u30e2\u30d0\u30a4\u30eb\u30a2\u30d7\u30ea\u3092\u30c6\u30b9\u30c8\u3059\u308b\u624b\u6bb5\u304c\u306a\u3044\u5834\u5408\u3082\u5fc3\u914d\u3042\u308a\u307e\u305b\u3093\u3002\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u3092\u4ecb\u3057\u3066zxing API\u3067QR\u30b3\u30fc\u30c9\u3092\u8aad\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001QR\u30b3\u30fc\u30c9\u306e\u753b\u50cf\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u3080\u305f\u3081\u306e\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002zxing\u304c\u4f9d\u5b58\u3057\u3066\u3044\u308b\u8ffd\u52a0\u306ejar\u30d5\u30a1\u30a4\u30eb\u304c\u30af\u30e9\u30b9\u30d1\u30b9\u306b\u3042\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
$java -cp $HOME\/.m2\/repository\/com\/google\/zxing\/javase\/3.3.2\/javase-3.3.2.jar:.:$HOME\/.m2\/repository\/com\/google\/zxing\/core\/3.3.2\/core-3.3.2.jar:$HOME\/.m2\/repository\/com\/beust\/jcommander\/1.72\/jcommander-1.72.jar:$HOME\/.m2\/repository\/com\/github\/jai-imageio\/jai-imageio-core\/1.3.1\/jai-imageio-core-1.3.1.jar com.google.zxing.client.j2se.CommandLineRunner JD.png\r\n<\/code><\/pre>\n
\"zxing<\/div>\n
\u5f0a\u793e\u306eGitHub\u30ea\u30dd\u30b8\u30c8\u30ea\u304b\u3089QR\u30b3\u30fc\u30c9\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc\u3068\u30ea\u30fc\u30c0\u30fc\u306eMaven\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4eca\u65e5\u306f\u3001Java\u306eQR\u30b3\u30fc\u30c9\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u3064\u3044\u3066\u898b\u3066\u3044\u304d\u307e\u3059\u3002\u3082\u3057\u3001\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3084\u30ac\u30b8\u30a7\u30c3\u30c8\u306b\u8a73\u3057\u3044\u306e\u3067\u3042\u308c\u3070\u3001QR\u30b3\u30fc\u30c9\u306b\u3064\u3044\u3066\u306f\u3054\u5b58\u77e5\u3067\u3057\u3087\u3046\u3002\u6700\u8fd1\u3067\u306f\u3001\u30d6\u30ed\u30b0\u3084\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u3001\u4e00\u90e8\u306e\u516c\u5171\u306e\u5834\u6240\u3067\u3082\u3088\u304f\u898b\u304b […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-666","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nJava QR\u30b3\u30fc\u30c9\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc - 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