{"id":3917,"date":"2024-03-13T07:40:56","date_gmt":"2024-03-13T07:40:56","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-upload-and-download-files-in-spring-boot\/"},"modified":"2025-07-30T22:52:02","modified_gmt":"2025-07-30T22:52:02","slug":"how-to-upload-and-download-files-in-spring-boot","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-upload-and-download-files-in-spring-boot\/","title":{"rendered":"Spring Boot File Upload &#038; Download Guide"},"content":{"rendered":"<p>File upload and download in SpringBoot can be achieved by following these steps:<\/p>\n<ol>\n<li>Upload files:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">@RestController<\/span>\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">FileUploadController<\/span> {\r\n\r\n    <span class=\"hljs-meta\">@PostMapping(\"\/upload\")<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> String <span class=\"hljs-title function_\">uploadFile<\/span><span class=\"hljs-params\">(<span class=\"hljs-meta\">@RequestParam(\"file\")<\/span> MultipartFile file)<\/span> {\r\n        <span class=\"hljs-keyword\">try<\/span> {\r\n            <span class=\"hljs-comment\">\/\/ \u4fdd\u5b58\u6587\u4ef6\u5230\u6307\u5b9a\u8def\u5f84<\/span>\r\n            <span class=\"hljs-type\">File<\/span> <span class=\"hljs-variable\">newFile<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">File<\/span>(<span class=\"hljs-string\">\"path\/to\/save\/\"<\/span> + file.getOriginalFilename());\r\n            file.transferTo(newFile);\r\n            <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-string\">\"File uploaded successfully\"<\/span>;\r\n        } <span class=\"hljs-keyword\">catch<\/span> (IOException e) {\r\n            <span class=\"hljs-keyword\">return<\/span> <span class=\"hljs-string\">\"File upload failed\"<\/span>;\r\n        }\r\n    }\r\n}\r\n<\/code><\/pre>\n<ol>\n<li>Download the files:<\/li>\n<\/ol>\n<pre class=\"post-pre\"><code><span class=\"hljs-meta\">@RestController<\/span>\r\n<span class=\"hljs-keyword\">public<\/span> <span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">FileDownloadController<\/span> {\r\n\r\n    <span class=\"hljs-meta\">@GetMapping(\"\/download\/{fileName}\")<\/span>\r\n    <span class=\"hljs-keyword\">public<\/span> ResponseEntity&lt;Resource&gt; <span class=\"hljs-title function_\">downloadFile<\/span><span class=\"hljs-params\">(<span class=\"hljs-meta\">@PathVariable<\/span> String fileName)<\/span> {\r\n        <span class=\"hljs-type\">Resource<\/span> <span class=\"hljs-variable\">resource<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">FileSystemResource<\/span>(<span class=\"hljs-string\">\"path\/to\/save\/\"<\/span> + fileName);\r\n        \r\n        <span class=\"hljs-type\">HttpHeaders<\/span> <span class=\"hljs-variable\">headers<\/span> <span class=\"hljs-operator\">=<\/span> <span class=\"hljs-keyword\">new<\/span> <span class=\"hljs-title class_\">HttpHeaders<\/span>();\r\n        headers.add(HttpHeaders.CONTENT_DISPOSITION, <span class=\"hljs-string\">\"attachment; filename=\"<\/span> + resource.getFilename());\r\n        \r\n        <span class=\"hljs-keyword\">return<\/span> ResponseEntity.ok()\r\n                .headers(headers)\r\n                .contentLength(resource.contentLength())\r\n                .contentType(MediaType.APPLICATION_OCTET_STREAM)\r\n                .body(resource);\r\n    }\r\n}\r\n<\/code><\/pre>\n<p>In file upload, use the @RequestParam annotation to retrieve the uploaded file and save it to a specified path. In file download, use the @PathVariable annotation to retrieve the file name to be downloaded, then return the corresponding file resource and set the response header to prompt the browser to download the file.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>File upload and download in SpringBoot can be achieved by following these steps: Upload files: @RestController public class FileUploadController { @PostMapping(&#8220;\/upload&#8221;) public String uploadFile(@RequestParam(&#8220;file&#8221;) MultipartFile file) { try { \/\/ \u4fdd\u5b58\u6587\u4ef6\u5230\u6307\u5b9a\u8def\u5f84 File newFile = new File(&#8220;path\/to\/save\/&#8221; + file.getOriginalFilename()); file.transferTo(newFile); return &#8220;File uploaded successfully&#8221;; } catch (IOException e) { return &#8220;File upload failed&#8221;; } } } [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[2892,2891,87,1289,2522],"class_list":["post-3917","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-file-download","tag-file-upload","tag-java","tag-rest-api","tag-spring-boot"],"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>Spring Boot File Upload &amp; Download Guide - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"Master file upload\/download in Spring Boot with code examples. 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