{"id":265,"date":"2024-05-29T17:31:51","date_gmt":"2024-05-29T09:31:51","guid":{"rendered":"https:\/\/www.xieshuoshuo.top\/?p=265"},"modified":"2024-05-29T17:31:51","modified_gmt":"2024-05-29T09:31:51","slug":"java%e4%bb%a3%e7%a0%81%e5%ae%9e%e7%8e%b0%e5%9b%be%e7%89%87%e4%b8%8a%e4%bc%a0%e5%8e%8b%e7%bc%a9","status":"publish","type":"post","link":"https:\/\/www.17ci.com\/index.php\/java%e4%bb%a3%e7%a0%81%e5%ae%9e%e7%8e%b0%e5%9b%be%e7%89%87%e4%b8%8a%e4%bc%a0%e5%8e%8b%e7%bc%a9\/","title":{"rendered":"Java\u4ee3\u7801\u5b9e\u73b0\u56fe\u7247\u4e0a\u4f20\u538b\u7f29"},"content":{"rendered":"\n<p>       \u56e0\u4e3a\u662f\u62ff\u522b\u4eba\u7684\u5f00\u6e90\u9879\u76ee\u8fdb\u884c\u4e8c\u5f00\uff0c\u6240\u4ee5\u5bf9\u4e8e\u4e00\u4e9b\u539f\u6709\u7684\u9700\u8981\u8fdb\u884c\u6539\u8fdb\uff0c\u5c31\u6bd4\u5982\u8bf4\u56fe\u7247\u4e0a\u4f20\u5230\u670d\u52a1\u5668\u7684\u529f\u80fd\u3002\u539f\u6709\u7684\u9879\u76ee\u662f\u5df2\u7ecf\u5b9e\u73b0\u4e86\u56fe\u7247\u4e0a\u4f20\u7684\u670d\u52a1\u5668\u7684\u529f\u80fd\uff0c\u4f46\u662f\u5176\u524d\u7aef\u9650\u5236\u7684\u4e0a\u4f20\u5927\u5c0f\u662f5MB\uff0c\u5e76\u4e14\u5bf9\u4e8e\u5c0f\u4e8e5MB\u7684\u56fe\u7247\u6ca1\u6709\u8fdb\u884c\u5904\u7406\uff0c\u8fd9\u5bfc\u81f4\u6211\u4eec\u5728\u5f00\u53d1\u5e76\u90e8\u7f72\u5230\u81ea\u5df1\u670d\u52a1\u5668\u7684\u65f6\u5019\uff0c\u90e8\u5206\u56fe\u7247\u52a0\u8f7d\u975e\u5e38\u6162\uff0c\u5f88\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\uff0c\u6240\u4ee5\uff0c\u6211\u4eec\u9700\u8981\u628a\u4e0a\u4f20\u7684\u56fe\u7247\u8fdb\u884c\u538b\u7f29\u624d\u53ef\u4ee5\u3002<\/p>\n\n\n\n<p>\u7531\u4e8e\u4e4b\u524d\u5bf9Java\u5f00\u653e\u4e86\u89e3\u7684\u6bd4\u8f83\u5c11\uff0c\u6240\u4ee5\u7f51\u4e0a\u627e\u7684\u65f6\u5019\uff0c\u9009\u62e9\u4e86Thumbnailator\u4f5c\u4e3a\u56fe\u7247\u538b\u7f29\u7684\u9996\u9009\u3002<\/p>\n\n\n\n<p>\u9996\u5148\u662f\u539f\u4ee3\u7801\u5b9e\u73b0\u56fe\u7247\u4e0a\u4f20\u5230\u670d\u52a1\u5668\u7684\u57fa\u672c\u903b\u8f91\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/* \u63a7\u5236\u5668 *\/\n@PostMapping(\"\/upload\")\n@Operation(summary = \"\u4e0a\u4f20\u6587\u4ef6\", description = \"\u6a21\u5f0f\u4e00\uff1a\u540e\u7aef\u4e0a\u4f20\u6587\u4ef6\")\npublic CommonResult&lt;String> uploadFile(FileUploadReqVO uploadReqVO) throws Exception {\n    MultipartFile file = uploadReqVO.getFile();\n    String path = uploadReqVO.getPath();\n    return success(fileService.createFile(file.getOriginalFilename(), path, IoUtil.readBytes(file.getInputStream())));\n}\n\n\/* \u65b9\u6cd5\u5b9a\u4e49 *\/\n\/**\n* \u4fdd\u5b58\u6587\u4ef6\uff0c\u5e76\u8fd4\u56de\u6587\u4ef6\u7684\u8bbf\u95ee\u8def\u5f84\n*\n* @param name    \u6587\u4ef6\u540d\u79f0\n* @param path    \u6587\u4ef6\u8def\u5f84\n* @param content \u6587\u4ef6\u5185\u5bb9\n* @return \u6587\u4ef6\u8def\u5f84\n*\/\nString createFile(String name, String path, byte&#91;] content);\n\n\/* \u65b9\u6cd5\u5b9e\u73b0 *\/\n@Override\n@SneakyThrows\npublic String createFile(String name, String path, byte&#91;] content) {\n    \/\/ \u8ba1\u7b97\u9ed8\u8ba4\u7684 path \u540d\n    String type = FileTypeUtils.getMineType(content, name);\n    if (StrUtil.isEmpty(path)) {\n        path = FileUtils.generatePath(content, name);\n    }\n    \/\/ \u5982\u679c name \u4e3a\u7a7a\uff0c\u5219\u4f7f\u7528 path \u586b\u5145\n    if (StrUtil.isEmpty(name)) {\n        name = path;\n    }\n\n    \/\/ \u4e0a\u4f20\u5230\u6587\u4ef6\u5b58\u50a8\u5668\n    FileClient client = fileConfigService.getMasterFileClient();\n    Assert.notNull(client, \"\u5ba2\u6237\u7aef(master) \u4e0d\u80fd\u4e3a\u7a7a\");\n    String url = client.upload(content, path, type);\n\n    \/\/ \u4fdd\u5b58\u5230\u6570\u636e\u5e93\n    FileDO file = new FileDO();\n    file.setConfigId(client.getId());\n    file.setName(name);\n    file.setPath(path);\n    file.setUrl(url);\n    file.setType(type);\n    file.setSize(content.length);\n    fileMapper.insert(file);\n    return url;\n}\n\n\/**********\u6587\u4ef6\u5b58\u50a8\u5668**********\/\n\/*\u65b9\u6cd5\u5b9a\u4e49*\/\n\/**\n * \u83b7\u5f97 Master \u6587\u4ef6\u5ba2\u6237\u7aef\n *\n * @return \u6587\u4ef6\u5ba2\u6237\u7aef\n *\/\nFileClient getMasterFileClient();\n\n\/*\u65b9\u6cd5\u5b9e\u73b0*\/\n\nprivate static final Long CACHE_MASTER_ID = 0L;\n\n@Override\npublic FileClient getMasterFileClient() {\n    return clientCache.getUnchecked(CACHE_MASTER_ID);\n}\n\n\/**********application.yaml**********\/\n  # Servlet \u914d\u7f6e\n  servlet:\n    # \u6587\u4ef6\u4e0a\u4f20\u76f8\u5173\u914d\u7f6e\u9879\n    multipart:\n      max-file-size: 16MB # \u5355\u4e2a\u6587\u4ef6\u5927\u5c0f\n      max-request-size: 300MB # \u8bbe\u7f6e\u603b\u4e0a\u4f20\u7684\u6587\u4ef6\u5927\u5c0f<\/code><\/pre>\n\n\n\n<p>\u63a5\u4e0b\u6765\u662f\u4fee\u6539\u540e\u7684\uff0c\u9996\u5148\u8981\u5728pom.xml\u6587\u4ef6\u4e0a\u5f15\u7528<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;dependency>\n      &lt;groupId>net.coobird&lt;\/groupId>\n      &lt;artifactId>thumbnailator&lt;\/artifactId>\n      &lt;version>0.4.14&lt;\/version>\n&lt;\/dependency><\/code><\/pre>\n\n\n\n<p>\u7136\u540e\u65b0\u5efa\u4e00\u4e2aImageCompressionUtils\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import net.coobird.thumbnailator.Thumbnails;\n\nimport java.io.ByteArrayInputStream;\nimport java.io.ByteArrayOutputStream;\nimport java.io.IOException;\n\npublic class ImageCompressionUtils {\n    public static byte&#91;] compressImage(byte&#91;] imageBytes, double scale, double quality) throws IOException {\n        ByteArrayInputStream inputStream = new ByteArrayInputStream(imageBytes);\n        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();\n\n        Thumbnails.of(inputStream)\n                .scale(scale)\n                .outputQuality(quality)\n                .toOutputStream(outputStream);\n\n        return outputStream.toByteArray();\n    }\n\n    public static byte&#91;] compressImageMax(byte&#91;] imageBytes, double maxFileSizeKB) throws IOException {\n        double quality = 1.0;\n        byte&#91;] compressedBytes = imageBytes;\n        ByteArrayOutputStream outputStream;\n\n        while (true) {\n            outputStream = new ByteArrayOutputStream();\n            Thumbnails.of(new ByteArrayInputStream(imageBytes))\n                    .scale(1.0)\n                    .outputQuality(quality)\n                    .toOutputStream(outputStream);\n            compressedBytes = outputStream.toByteArray();\n\n            if (compressedBytes.length \/ 1024 &lt;= maxFileSizeKB || quality &lt;= 0.1) {\n                break;\n            }\n            quality -= 0.1;\n        }\n\n        return compressedBytes;\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u7136\u540e\u4fee\u6539\u65b9\u6cd5\u7684\u5b9e\u73b0\u7c7b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@Override\n@SneakyThrows\npublic String createFile(String name, String path, byte&#91;] content) {\n    \/\/ \u8ba1\u7b97\u9ed8\u8ba4\u7684 path \u540d\n    String type = FileTypeUtils.getMineType(content, name);\n    if (StrUtil.isEmpty(path)) {\n        path = FileUtils.generatePath(content, name);\n    }\n    \/\/ \u5982\u679c name \u4e3a\u7a7a\uff0c\u5219\u4f7f\u7528 path \u586b\u5145\n    if (StrUtil.isEmpty(name)) {\n        name = path;\n    }\n\n    \/\/ \u68c0\u67e5\u6587\u4ef6\u7c7b\u578b\uff0c\u82e5\u4e3a\u56fe\u7247\u5219\u8fdb\u884c\u6700\u5927\u538b\u7f29\n    if (type.startsWith(\"image\/\")) {\n        content = ImageCompressionUtils.compressImageMax(content, 150); \/\/ \u5c06\u56fe\u7247\u538b\u7f29\u5230\u5c0f\u4e8e150KB\n    }\n\n    \/\/ \u4e0a\u4f20\u5230\u6587\u4ef6\u5b58\u50a8\u5668\n    FileClient client = fileConfigService.getMasterFileClient();\n    Assert.notNull(client, \"\u5ba2\u6237\u7aef(master) \u4e0d\u80fd\u4e3a\u7a7a\");\n    String url = client.upload(content, path, type);\n\n    \/\/ \u4fdd\u5b58\u5230\u6570\u636e\u5e93\n    FileDO file = new FileDO();\n    file.setConfigId(client.getId());\n    file.setName(name);\n    file.setPath(path);\n    file.setUrl(url);\n    file.setType(type);\n    file.setSize(content.length);\n    fileMapper.insert(file);\n    return url;\n}<\/code><\/pre>\n\n\n\n<p>\u6211\u8fd9\u91cc\u662f\u5c06\u56fe\u7247\u538b\u7f29\u81f3150KB\u4ee5\u5185\uff0c\u6700\u7ec8\u5b9e\u73b0\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.xieshuoshuo.top\/wp-content\/uploads\/2024\/05\/1716967991-image-1024x512.png\" alt=\"\" class=\"wp-image-271\" srcset=\"https:\/\/www.17ci.com\/wp-content\/uploads\/2024\/05\/1716967991-image-1024x512.png 1024w, https:\/\/www.17ci.com\/wp-content\/uploads\/2024\/05\/1716967991-image-300x150.png 300w, https:\/\/www.17ci.com\/wp-content\/uploads\/2024\/05\/1716967991-image-768x384.png 768w, https:\/\/www.17ci.com\/wp-content\/uploads\/2024\/05\/1716967991-image-1536x767.png 1536w, https:\/\/www.17ci.com\/wp-content\/uploads\/2024\/05\/1716967991-image-2048x1023.png 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u56e0\u4e3a\u662f\u62ff\u522b\u4eba\u7684\u5f00\u6e90\u9879\u76ee\u8fdb\u884c\u4e8c\u5f00\uff0c\u6240\u4ee5\u5bf9\u4e8e\u4e00\u4e9b\u539f\u6709\u7684\u9700\u8981\u8fdb\u884c\u6539\u8fdb\uff0c\u5c31\u6bd4\u5982\u8bf4\u56fe\u7247\u4e0a\u4f20\u5230\u670d\u52a1\u5668\u7684\u529f\u80fd\u3002\u539f\u6709\u7684\u9879\u76ee\u662f\u5df2\u7ecf\u5b9e\u73b0\u4e86\u56fe\u7247\u4e0a\u4f20\u7684\u670d &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[34],"tags":[35,36,32],"class_list":{"0":"post-265","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-java","7":"tag-java","9":"tag-32"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Java\u4ee3\u7801\u5b9e\u73b0\u56fe\u7247\u4e0a\u4f20\u538b\u7f29 - \u4ed6\u7684\u65e5\u5e38\u65f6\u5149<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.17ci.com\/index.php\/java\u4ee3\u7801\u5b9e\u73b0\u56fe\u7247\u4e0a\u4f20\u538b\u7f29\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" 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