How to setup uploaded file's path in Spring MVC - spring

Question

I want to have uploaded file to be stored in my specified folder like this:
/SpringMVC/tmp
but it is stored into this folder:
C:\Users\zhanzhex\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\SpringMVC\tmp\spittr\uploads
this is my controller method for processing uploading:
#RequestMapping(value="/register", method=RequestMethod.POST)
public String processRegistration(
#RequestPart(name="profilePicture",required=false) Part profilePicture,
#Valid Spitter spitter, Errors errors) throws IOException
{
if (errors.hasErrors())
{
System.out.println("find errors");
return "registerForm";
}
profilePicture.write(spitter.getId() + "_profile." + profilePicture.getSubmittedFileName().substring(profilePicture.getSubmittedFileName().indexOf(".") + 1));
spitterRespository.saveSpitter(spitter);
return "redirect:/spitter/"+spitter.getId();
}
I just configure the temp folder for file upload (/tmp/spittr/uploads) in my web.xml, but I want to change the folder while calling write method within controller method, seems I can't. if I calling the write method like this:
profilePicture.write("/tmp/spittr/uploads/" + spitter.getId() + "_profile.jpg");
it will throw IOException to indicate that the folder is not existing:
C:\Users\zhanzhex\eclipse-workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\SpringMVC\tmp\spittr\uploads\tmp\spittr\uploads
so, I have to remove prefix "/tmp/spittr/uploads" when I calling profilePicture.write method.
see my web.xml below:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>SpringMVCs</display-name>
<context-param>
<param-name>contextClass</param-name>
<param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</context-param>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>spittr.config.RootConfig</param-value>
</context-param>
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<servlet>
<servlet-name>spittrAppServlet</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextClass</param-name>
<param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</init-param>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>spittr.config.WebConfig</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
<multipart-config>
<location>/tmp/spittr/uploads</location>
<max-file-size>2097152</max-file-size>
<max-request-size>4194304</max-request-size>
</multipart-config>
</servlet>
<servlet-mapping>
<servlet-name>spittrAppServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
I don't know why, can I change the destination folder setting? How to do that?

Answer 1

Instead of Part you can use MultipartFile or FilePart interfaces
#RequestPart(name="profilePicture",required=false) MultipartFile profilePicture
These interfaces expose .transferTo() function to copy data to file that you can use like
profilePicture.transferTo(new File("/path/to/file"));