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POHow to make download function in spring mvc?
 

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  1. POHow to make download function in spring mvc?
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    <p>I have made an upload function and it runs well. It stores the uploaded file to "C:/apache-tomcat-6.0.36/webapps/Upload/" But, now I want to make this app be able to download the file.</p> <p>I have been searching in google but I cannot find.</p> <p>This is the code for the model:</p> <pre><code>public class UploadForm { private String name = null; private CommonsMultipartFile file = null; public String getName() { return name; } public void setName(String name) { this.name = name; } public CommonsMultipartFile getFile() { return file; } public void setFile(CommonsMultipartFile file) { this.file = file; this.name = file.getOriginalFilename(); } </code></pre> <p>}</p> <p>This is the controller:</p> <pre><code>@Controller </code></pre> <p>@RequestMapping(value="/FileUploadForm.htm") public class UploadFormController implements HandlerExceptionResolver{</p> <pre><code>private String filePath = "C:/apache-tomcat-6.0.36/webapps/Upload/"; @RequestMapping(method=RequestMethod.GET) public String showForm(ModelMap model){ UploadForm form = new UploadForm(); model.addAttribute("FORM", form); return "FileUploadForm"; } @RequestMapping(method=RequestMethod.POST) public String processForm(@ModelAttribute(value="FORM") UploadForm form, HttpServletRequest request,@RequestParam CommonsMultipartFile[] file) throws Exception { System.out.println(filePath); if(file != null &amp;&amp; file.length &gt; 0) { for(CommonsMultipartFile aFiles : file) { if(!aFiles.getOriginalFilename().equals("")) { aFiles.transferTo(new File(filePath + aFiles.getOriginalFilename())); } } return "success"; }else{ return "FileUploadForm"; } } @SuppressWarnings({ "unchecked", "rawtypes" }) @Override public ModelAndView resolveException(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception exception) { Map&lt;Object, Object&gt; model = new HashMap&lt;Object, Object&gt;(); if (exception instanceof MaxUploadSizeExceededException) { model.put("errors", "File size should be less then "+((MaxUploadSizeExceededException)exception).getMaxUploadSize()+" byte."); } else { model.put("errors", "Unexpected error: " + exception.getMessage()); } model.put("FORM", new UploadForm()); return new ModelAndView("/FileUploadForm", (Map) model); } </code></pre> <p>}</p> <p>This is the FileUploadForm.jsp page:</p> <pre><code> &lt;form:form commandName="FORM" enctype="multipart/form-data" method="POST"&gt; &lt;table&gt; &lt;tr&gt;&lt;td colspan="2" style="color: red;"&gt;&lt;form:errors path="*" cssStyle="color : red;"/&gt; ${errors} &lt;/td&gt;&lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Choose File:&lt;/td&gt; &lt;td&gt;&lt;form:input type="file" name="file" path="file" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td colspan="2"&gt;&lt;input type="submit" value="Upload File" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/form:form&gt; </code></pre> <p>Last, this is the Success.jsp page:</p> <pre><code> &lt;h3 style="color: green;"&gt;File has been uploaded successfully.&lt;/h3&gt; &lt;br&gt; File Name : ${FORM.name}. &lt;/br&gt;&lt;a href="..."&gt;Download this file here&lt;/a&gt; </code></pre> <p>Any ideas or solutions is greatly appreciated and welcomed.</p> <p>Best Regards, Yunus</p>
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    1. COThis is already answered here: http://stackoverflow.com/questions/5673260/downloading-a-file-from-spring-controllers
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    2. COthank you for your help :)
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