{"id":31365,"date":"2023-03-20T18:40:38","date_gmt":"2023-07-13T11:00:16","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91%e6%96%87%e4%bb%b6%e4%b8%8b%e8%bd%bd%e3%80%90java%e3%80%91%e6%aa%94%e6%a1%88%e4%b8%8b%e8%bc%89\/"},"modified":"2025-08-12T23:40:23","modified_gmt":"2025-08-12T15:40:23","slug":"%e3%80%90java%e3%80%91%e6%96%87%e4%bb%b6%e4%b8%8b%e8%bd%bd%e3%80%90java%e3%80%91%e6%aa%94%e6%a1%88%e4%b8%8b%e8%bc%89","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90java%e3%80%91%e6%96%87%e4%bb%b6%e4%b8%8b%e8%bd%bd%e3%80%90java%e3%80%91%e6%aa%94%e6%a1%88%e4%b8%8b%e8%bc%89\/","title":{"rendered":"\u3010Java\u3011\u6587\u4ef6\u4e0b\u8f7d\u3010Java\u3011\u6a94\u6848\u4e0b\u8f09"},"content":{"rendered":"

\u524d\u8a00\u901a\u8fc7\u5c06\u6587\u4ef6\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u5f62\u5f0f\uff0c\u5e76\u5c06\u5176\u8bbe\u7f6e\u4e3a\u54cd\u5e94\u5185\u5bb9\uff0c\u4ee5\u5b9e\u73b0\u6587\u4ef6\u4e0b\u8f7d\u3002\u6709\u4e24\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u3002<\/p>\n

\u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8bbe\u7f6e\u5230\u54cd\u5e94(Controller\u65b9\u6cd5\u7684\u8fd4\u56de\u503c)\u4e2d\u3002
\n\u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8bbe\u7f6e\u5230\u54cd\u5e94(\u65b9\u6cd5\u7684\u53c2\u6570\/HttpServletResponse)\u4e2d\u3002<\/p>\n

\u63d0\u4f9b\u53c2\u8003\u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8bbe\u7f6e\u4e3a\u54cd\u5e94\uff08\u63a7\u5236\u5668\u65b9\u6cd5\u7684\u8fd4\u56de\u503c\uff09\u3002<\/p>\n

 <\/p>\n

\u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8bbe\u7f6e\u5230\u54cd\u5e94\u4e2d\uff08\u4f5c\u4e3a\u65b9\u6cd5\u7684\u53c2\u6570\/HttpServletResponse\uff09\u3002<\/p>\n

 <\/p>\n

\u2460 \u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8bbe\u7f6e\u4e3a\u54cd\u5e94(Controller\u65b9\u6cd5\u7684\u8fd4\u56de\u503c)\u3002<\/p>\n

\u6e90\u4ee3\u7801<\/p>\n
import<\/span> java.io.IOException<\/span>;<\/span>\r\nimport<\/span> java.nio.file.Files<\/span>;<\/span>\r\nimport<\/span> java.nio.file.Path<\/span>;<\/span>\r\n\r\nimport<\/span> org.springframework.core.io.PathResource<\/span>;<\/span>\r\nimport<\/span> org.springframework.core.io.Resource<\/span>;<\/span>\r\nimport<\/span> org.springframework.http.HttpHeaders<\/span>;<\/span>\r\nimport<\/span> org.springframework.http.MediaType<\/span>;<\/span>\r\nimport<\/span> org.springframework.http.ResponseEntity<\/span>;<\/span>\r\nimport<\/span> org.springframework.stereotype.Controller<\/span>;<\/span>\r\nimport<\/span> org.springframework.web.bind.annotation.GetMapping<\/span>;<\/span>\r\nimport<\/span> org.springframework.web.bind.annotation.RequestMapping<\/span>;<\/span>\r\n\r\n@Controller<\/span>\r\n@RequestMapping<\/span>(<\/span>\"\/files\"<\/span>)<\/span>\r\npublic<\/span> class<\/span> FileController<\/span> {<\/span>\r\n    @GetMapping<\/span>(<\/span>\"\/downloadFile\"<\/span>)<\/span>\r\n    public<\/span> ResponseEntity<\/span><<\/span>Resource<\/span>><\/span> downloadFile<\/span>()<\/span>\r\n            throws<\/span> Exception<\/span> {<\/span>\r\n        Path<\/span> path<\/span> =<\/span> Path<\/span>.<\/span>of<\/span>(<\/span>\"src\/main\/resources\/file\/sample_file_1.txt\"<\/span>);<\/span>\r\n        Resource<\/span> resource<\/span> =<\/span> new<\/span> PathResource<\/span>(<\/span>path<\/span>);<\/span>\r\n        return<\/span> ResponseEntity<\/span>.<\/span>ok<\/span>()<\/span>\r\n                .<\/span>contentType<\/span>(<\/span>getContentType<\/span>(<\/span>path<\/span>))<\/span>\r\n                .<\/span>contentLength<\/span>(<\/span>resource<\/span>.<\/span>contentLength<\/span>())<\/span>\r\n                .<\/span>header<\/span>(<\/span>HttpHeaders<\/span>.<\/span>CONTENT_DISPOSITION<\/span>,<\/span>\r\n                        \"attachment; filename=\\\"\"<\/span> +<\/span> resource<\/span>.<\/span>getFilename<\/span>()<\/span> +<\/span> \"\\\"\"<\/span>)<\/span>\r\n                .<\/span>body<\/span>(<\/span>resource<\/span>);<\/span>\r\n    }<\/span>\r\n\r\n    private<\/span> MediaType<\/span> getContentType<\/span>(<\/span>Path<\/span> path<\/span>)<\/span> throws<\/span> IOException<\/span> {<\/span>\r\n        try<\/span> {<\/span>\r\n            return<\/span> MediaType<\/span>.<\/span>parseMediaType<\/span>(<\/span>Files<\/span>.<\/span>probeContentType<\/span>(<\/span>path<\/span>));<\/span>\r\n        }<\/span> catch<\/span> (<\/span>IOException<\/span> e<\/span>)<\/span> {<\/span>\r\n            return<\/span> MediaType<\/span>.<\/span>APPLICATION_OCTET_STREAM<\/span>;<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n
\u5f25\u8865<\/p>\n
\u300cHttpHeaders.CONTENT_DISPOSITION\u300d\u662f\u4ec0\u4e48\uff1f\u7528\u4e8e\u786e\u5b9a\u5982\u4f55\u5904\u7406\u4f5c\u4e3a\u54cd\u5e94\u8fd4\u56de\u7684\u6587\u4ef6\u7684\u5934\u6587\u4ef6\u4fe1\u606f\u3002<\/p>\n
\n
\u30d8\u30c3\u30c0\u5185\u5bb9\u51e6\u7406\u5185\u5bb9inlineWEB\u30da\u30fc\u30b8\u3068\u3057\u3066\u8868\u793aattachment\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308battachment; filename=”filename.jpg”\u30d5\u30a1\u30a4\u30eb\u540d\u6307\u5b9a\u3067\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b<\/p>\n
\/\/ WEB\u30da\u30fc\u30b8\u3068\u3057\u3066\u8868\u793a<\/span>\r\nResponseEntity<\/span>.<\/span>ok<\/span>().<\/span>header<\/span>(<\/span>HttpHeaders<\/span>.<\/span>CONTENT_DISPOSITION<\/span>,<\/span> \"inline\"<\/span>);<\/span>\r\n\/\/ \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b<\/span>\r\nResponseEntity<\/span>.<\/span>ok<\/span>().<\/span>header<\/span>(<\/span>HttpHeaders<\/span>.<\/span>CONTENT_DISPOSITION<\/span>,<\/span> \"attachment\"<\/span>)<\/span>\r\n\/\/ \u30d5\u30a1\u30a4\u30eb\u540d\u6307\u5b9a\u3067\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3059\u308b<\/span>\r\nResponseEntity<\/span>.<\/span>ok<\/span>().<\/span>header<\/span>(<\/span>HttpHeaders<\/span>.<\/span>CONTENT_DISPOSITION<\/span>,<\/span> \"attachment; filename=\\\"\"<\/span> +<\/span> resource<\/span>.<\/span>getFilename<\/span>()<\/span> +<\/span> \"\\\"\"<\/span>)<\/span>\r\n<\/code><\/pre>\n
“MediaType.APPLICATION_OCTET_STREAM\u662f\u4ec0\u4e48\u610f\u601d\uff1f”\u2022 MIME\u7684\u4e00\u79cd\u7c7b\u578b\u3002
\n\u2022 \u610f\u6307\u201c\u4e0d\u8981\u5728\u610f\u6587\u4ef6\u7c7b\u578b\uff01\u201d\u7684\u8868\u8fbe\u3002<\/p>\n
return MediaType.APPLICATION_OCTET_STREAM;\r\n<\/code><\/pre>\n
\u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8bbe\u7f6e\u4e3a\u54cd\u5e94(\u65b9\u6cd5\u53c2\u6570\/HttpServletResponse)\u3002\u5982\u679c\u60a8\u5e0c\u671b\u5728\u6700\u540e\u5220\u9664\u4e3a\u4e0b\u8f7d\u800c\u521b\u5efa\u7684\u4e34\u65f6\u6587\u4ef6\u65f6\u63d2\u5165\u5904\u7406\uff0c\u8bf7\u4f7f\u7528\u2461\u800c\u4e0d\u662f\u2460\u3002<\/p>\n
\u8bf7\u8f93\u5165\u60a8\u8981\u8f6c\u6362\u6210\u6c49\u8bed\u7684\u539f\u6587\u6216\u77ed\u8bed\u3002<\/p>\n
@Controller<\/span>\r\n@RequestMapping<\/span>(<\/span>\"\/files\"<\/span>)<\/span>\r\npublic<\/span> class<\/span> SampleController<\/span> {<\/span>\r\n\r\n    @Autowired<\/span>\r\n    FastExcel<\/span> fastExcel<\/span>;<\/span>\r\n\r\n    private<\/span> final<\/span> SimpleDateFormat<\/span> format<\/span> =<\/span> new<\/span> SimpleDateFormat<\/span>(<\/span>\"yyyy-MM-dd\"<\/span>);<\/span>\r\n\r\n    @GetMapping<\/span>(<\/span>\"\/downloadFile2\"<\/span>)<\/span>\r\n    public<\/span> void<\/span> downloadFile2<\/span>(<\/span>HttpServletResponse<\/span> response<\/span>)<\/span> throws<\/span> Exception<\/span> {<\/span>\r\n        \/\/ \u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30d5\u30a1\u30a4\u30eb\u3092\u30b3\u30d4\u30fc \u2192 \u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u4f5c\u6210<\/span>\r\n        Path<\/span> templateFile<\/span> =<\/span> Path<\/span>.<\/span>of<\/span>(<\/span>\"src\/main\/resources\/file\/templateFile.txt\"<\/span>);<\/span>\r\n        Path<\/span> temporaryFile<\/span> =<\/span> Path<\/span>.<\/span>of<\/span>(<\/span>\"src\/main\/resources\/tmp\/\"<\/span> +<\/span> format<\/span>.<\/span>format<\/span>(<\/span>new<\/span> Date<\/span>())<\/span> +<\/span> \".txt\"<\/span>);<\/span>\r\n        Files<\/span>.<\/span>copy<\/span>(<\/span>templateFile<\/span>,<\/span> temporaryFile<\/span>);<\/span>\r\n        Resource<\/span> resource<\/span> =<\/span> new<\/span> PathResource<\/span>(<\/span>temporaryFile<\/span>);<\/span>\r\n        \/\/ \u30ec\u30b9\u30dd\u30f3\u30b9\u4f5c\u6210<\/span>\r\n        response<\/span>.<\/span>setContentType<\/span>(<\/span>getContentType<\/span>(<\/span>temporaryFile<\/span>).<\/span>getType<\/span>());<\/span>\r\n        response<\/span>.<\/span>setContentLengthLong<\/span>(<\/span>resource<\/span>.<\/span>contentLength<\/span>());<\/span>\r\n        response<\/span>.<\/span>setHeader<\/span>(<\/span>HttpHeaders<\/span>.<\/span>CONTENT_DISPOSITION<\/span>,<\/span> \"attachment; filename=\\\"\"<\/span> +<\/span> resource<\/span>.<\/span>getFilename<\/span>()<\/span> +<\/span> \"\\\"\"<\/span>);<\/span>\r\n        try<\/span> (<\/span>\r\n            BufferedOutputStream<\/span> out<\/span> =<\/span> new<\/span> BufferedOutputStream<\/span>(<\/span>response<\/span>.<\/span>getOutputStream<\/span>());<\/span>\r\n        )<\/span> {<\/span>\r\n            out<\/span>.<\/span>write<\/span>(<\/span>Files<\/span>.<\/span>readAllBytes<\/span>(<\/span>temporaryFile<\/span>));<\/span>\r\n        }<\/span>\r\n        \/\/ \u4e00\u6642\u30d5\u30a1\u30a4\u30eb\u524a\u9664<\/span>\r\n        Files<\/span>.<\/span>deleteIfExists<\/span>(<\/span>temporaryFile<\/span>);<\/span>\r\n    }<\/span>\r\n\r\n    private<\/span> MediaType<\/span> getContentType<\/span>(<\/span>Path<\/span> path<\/span>)<\/span> throws<\/span> IOException<\/span> {<\/span>\r\n        try<\/span> {<\/span>\r\n            return<\/span> MediaType<\/span>.<\/span>parseMediaType<\/span>(<\/span>Files<\/span>.<\/span>probeContentType<\/span>(<\/span>path<\/span>));<\/span>\r\n        }<\/span> catch<\/span> (<\/span>IOException<\/span> e<\/span>)<\/span> {<\/span>\r\n            return<\/span> MediaType<\/span>.<\/span>APPLICATION_OCTET_STREAM<\/span>;<\/span>\r\n        }<\/span>\r\n    }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u524d\u8a00\u901a\u8fc7\u5c06\u6587\u4ef6\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u5f62\u5f0f\uff0c\u5e76\u5c06\u5176\u8bbe\u7f6e\u4e3a\u54cd\u5e94\u5185\u5bb9\uff0c\u4ee5\u5b9e\u73b0\u6587\u4ef6\u4e0b\u8f7d\u3002\u6709\u4e24\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u3002 \u5c06\u4e8c\u8fdb\u5236\u6570\u636e\u8bbe\u7f6e\u5230 […]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31365","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"\n\u3010Java\u3011\u6587\u4ef6\u4e0b\u8f7d\u3010Java\u3011\u6a94\u6848\u4e0b\u8f09 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u3010Java\u3011\u6587\u4ef6\u4e0b\u8f7d\u3010Java\u3011\u6a94\u6848\u4e0b\u8f09\u7684\u6280\u672f\u6587\u7ae0\" \/>\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.silicloud.com\/zh\/blog\/\u3010java\u3011\u6587\u4ef6\u4e0b\u8f7d\u3010java\u3011\u6a94\u6848\u4e0b\u8f09\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Java\u3011\u6587\u4ef6\u4e0b\u8f7d\u3010Java\u3011\u6a94\u6848\u4e0b\u8f09\" \/>\n<meta property=\"og:description\" content=\"\u5173\u4e8e\u3010Java\u3011\u6587\u4ef6\u4e0b\u8f7d\u3010Java\u3011\u6a94\u6848\u4e0b\u8f09\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010java\u3011\u6587\u4ef6\u4e0b\u8f7d\u3010java\u3011\u6a94\u6848\u4e0b\u8f09\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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