導(dǎo)入依賴（pom.xml）
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<!-- 上傳下載需要設(shè)計(jì)到的jar包 --><dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.6</version></dependency><dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.3</version></dependency><!--servlet-api導(dǎo)入高版本的--><dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>4.0.1</version></dependency><!-- 圖片處理類 --><dependency> <groupId>net.coobird</groupId> <artifactId>thumbnailator</artifactId> <version>0.4.8</version></dependency> |
全局配置 application.properties
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# 上傳文件大小spring.servlet.multipart.max-file-size=5MBspring.servlet.multipart.max-request-size=5MB |
創(chuàng)建 WebMvcConfig 配置類 靜態(tài)資源映射
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@Configurationpublic class WebMvcConfig implements WebMvcConfigurer { @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { ApplicationHome h = new ApplicationHome(getClass()); File jarF = h.getSource(); String dirPath = jarF.getParentFile().toString()+"/upload/"; String os = System.getProperty("os.name"); if (os.toLowerCase().startsWith("win")) { //如果是Windows系統(tǒng) registry.addResourceHandler("/upload/**").addResourceLocations("file:"+dirPath); } else { registry.addResourceHandler("/upload/**").addResourceLocations("file:"+dirPath); } }} |
文件或圖片上傳
控制層
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// 上傳文件 @ResponseBody @RequestMapping("/upload") public String fileUpload(@RequestParam("files") MultipartFile files) throws IOException {// // win系統(tǒng) 上傳路徑保存設(shè)置// // 獲取項(xiàng)目路徑// File projectPath = new File(ResourceUtils.getURL("classpath:").getPath());// // 絕對(duì)路徑=項(xiàng)目路徑+自定義路徑// File pathFile = new File(projectPath.getAbsolutePath(), "static/upload/");// if (!pathFile.exists()) {// pathFile.mkdirs();// }// //上傳文件地址// UUID uuid = UUID.randomUUID();// File serverFile = new File(pathFile, uuid + "_" + files.getOriginalFilename());// files.transferTo(serverFile);//// String imgPath = ("/upload/" + uuid + "_" + files.getOriginalFilename()).replace("\\", "/");//// return imgPath; // Linux服務(wù)器 上傳路徑保存設(shè)置 // 項(xiàng)目路徑 /home/www/ File pathFile = new File("/home/www/upload/"); if (!pathFile.exists()) { pathFile.mkdirs(); } //上傳文件地址 UUID uuid = UUID.randomUUID(); File serverFile = new File(pathFile, uuid + "_" + files.getOriginalFilename()); files.transferTo(serverFile); String imgPath = ("/upload/" + uuid + "_" + files.getOriginalFilename()).replace("\\", "/"); return imgPath; } |
HTML頁(yè)面
Ajax 無刷新上傳
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<form action="" class="layui-form" enctype="multipart/form-data" method="post"> <input type="hidden" name="blogImg" id="imgPath" value=""> <div class="form-group"> <label>圖片上傳</label> <input type='file' style='margin: 5px;' name='files' required><br> <button type="button" class="layui-btn" id="img_upload">上傳圖片</button> </div> <input type="submit"></form> |
JS
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//普通圖片上傳 $('#img_upload').click(function () { var formData = new FormData(); //獲取選擇的文件 $.each($('input[name="files"]'),function (index,item) { formData.append("files",item.files[0]) }); //發(fā)送異步請(qǐng)求 $.ajax({ method:'post', url: '[[@{/user/upload}]]', // 文件上傳接口 data:formData, processData: false, contentType:false, success:function (data) { //成功返回觸發(fā)的方法 $('#imgPath').val(data); alert("上傳成功"); }, //請(qǐng)求失敗觸發(fā)的方法 error:function () { alert("上傳失敗"); } }); }); |
文件或圖片下載
控制層
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@RequestMapping(value="/download")public String downloads(HttpServletResponse response ,HttpServletRequest request) throws Exception{ //要下載的圖片地址 String path = request.getServletContext().getRealPath("/upload"); String fileName = "基礎(chǔ)語(yǔ)法.jpg"; //1、設(shè)置response 響應(yīng)頭 response.reset(); //設(shè)置頁(yè)面不緩存,清空buffer response.setCharacterEncoding("UTF-8"); //字符編碼 response.setContentType("multipart/form-data"); //二進(jìn)制傳輸數(shù)據(jù) //設(shè)置響應(yīng)頭 response.setHeader("Content-Disposition", "attachment;fileName="+URLEncoder.encode(fileName, "UTF-8")); File file = new File(path,fileName); //2、 讀取文件--輸入流 InputStream input=new FileInputStream(file); //3、 寫出文件--輸出流 OutputStream out = response.getOutputStream(); byte[] buff =new byte[1024]; int index=0; //4、執(zhí)行 寫出操作 while((index= input.read(buff))!= -1){ out.write(buff, 0, index); out.flush(); } out.close(); input.close(); return null;} |
HTML頁(yè)面
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<a href="/download" rel="external nofollow" >點(diǎn)擊下載</a> |
SpringBoot 文件或圖片上傳與下載就可以了
到此這篇關(guān)于SpringBoot 文件或圖片上傳與下載功能的實(shí)現(xiàn)的文章就介紹到這了,更多相關(guān)SpringBoot 文件上傳與下載內(nèi)容請(qǐng)搜索服務(wù)器之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持服務(wù)器之家！
原文鏈接：https://www.cnblogs.com/dmflysky/archive/2021/02/25/14450015.html
