基于Spring Boot利用 ajax实现上传图片功能

 @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/imctemp-rainy/**").addResourceLocations("file:D:/E/"); }

 
 $(function () { $("#button").click(function () { var form = new FormData(); form.append("file", document.getElementById("file").files[0]); $.ajax({ url: "/stu/upload",    //后台url data: form, cache: false, async: false, type: "POST",          //类型，POST或者GET dataType: 'json',       //数据返回类型，可以是xml、json等 processData: false, contentType: false, success: function (data) {   //成功，回调函数 if (data) { var pic="/imctemp-rainy/"+data.fileName; $("#url img").attr("src",pic); // alert(JSON.stringify(data)); } else { alert("失败"); } }, error: function (er) {     //失败，回调函数 alert(JSON.stringify(data)); } }); }) })

 public static void uploadFile(byte[] file, String filePath, String fileName) throws Exception { File targetFile = new File(filePath); if (!targetFile.exists()) { targetFile.mkdirs(); } FileOutputStream out = new FileOutputStream(filePath +"/"+ fileName); out.write(file); out.flush(); out.close(); } //处理文件上传 @ResponseBody //返回json数据 @RequestMapping(value = "upload", method = RequestMethod.POST) public JSONObject uploadImg(@RequestParam("file") MultipartFile file,HttpServletRequest request) { String contentType = file.getContentType(); System.out.print(contentType); String fileName = System.currentTimeMillis()+file.getOriginalFilename(); String filePath = "D:/E"; JSONObject jo = new JSONObject();//实例化json数据 if (file.isEmpty()) { jo.put("success", 0); jo.put("fileName", ""); } try { uploadFile(file.getBytes(), filePath, fileName); jo.put("success", 1); jo.put("fileName", fileName); // jo.put("xfileName", filePath+"/"+fileName); } catch (Exception e) { // TODO: handle exception } //返回json return jo; }