how to get getServletContext() in spring mvc Controller

Question

I need to upload images in my project. How to get the upload path in SpringMVC. The path is;

/home/cme/project/eclipse/workspace_12_11/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/fileUploadTester/upload 

The following error;

The method getServletContext() is undefined for the type HomePageController 

appears when I use this code;

String uploadPath = getServletContext().getRealPath("") + File.separator + UPLOAD_DIRECTORY; 

My code is

public ModelAndView UploadPhoto(@ModelAttribute User user, HttpServletRequest request, HttpServletResponse response) throws IOException {  final String UPLOAD_DIRECTORY = "upload";  final int THRESHOLD_SIZE = 1024 * 1024 * 3; // 3MB  final int MAX_FILE_SIZE = 1024 * 1024 * 40; // 40MB  final int MAX_REQUEST_SIZE = 1024 * 1024 * 50; // 50MB   String value[] = new String[10];  int i = 0;   // checks if the request actually contains upload file  if (!ServletFileUpload.isMultipartContent(request)) {   PrintWriter writer = response.getWriter();   writer.println("Request does not contain upload data");   writer.flush();   return; //here is error This method must return a result of type ModelAndView  }   DiskFileItemFactory factory = new DiskFileItemFactory();  factory.setSizeThreshold(THRESHOLD_SIZE);  factory.setRepository(new File(System.getProperty("java.io.tmpdir")));   ServletFileUpload upload = new ServletFileUpload(factory);  upload.setFileSizeMax(MAX_FILE_SIZE); //here error The method setFileSizeMax(int) is undefined for the type ServletFileUpload  upload.setSizeMax(MAX_REQUEST_SIZE);  String uploadPath = getServletContext().getRealPath("") + File.separator + UPLOAD_DIRECTORY; // here error The method getServletContext() is undefined for the type Homepage Controller  // creates the directory if it does not exist  File uploadDir = new File(uploadPath);  if (!uploadDir.exists()) {   uploadDir.mkdir();  }   try {   List < FileItem > items = upload.parseRequest(request); // request is HttpServletRequest   for (FileItem item: items) {    if (item.isFormField()) { // text fields, etc...     String fieldName = item.getFieldName();     System.out.print("fieldname" + fieldName);     value[i] = item.getString();     System.out.print("from uploader" + value[i]);     i++;    } else {     //String fileName=new File(item.getName()).getName();   Use this to use default file name     String name = value[0];     System.out.println("file uploader name" + name);     String filePath = uploadPath + File.separator + name;     System.out.println(filePath);     File storeFile = new File(filePath);     try {      item.write(storeFile);     } catch (Exception ex) {     }    }   }   System.out.println("uploaded successfully");  } catch (Exception ex) {   System.out.println("error not uploaded");  }  return new ModelAndView("ChangePhoto"); } 

Three error

1. This method must return a result of type ModelAndView
2. The method setFileSizeMax(int) is undefined for the type ServletFileUpload
3. The method getServletContext() is undefined for the type Homepage Controller

Answer 1

1. Use below code to autowire ServletContext object in SpringMVC

   @Autowired ServletContext context;  

   and after that try to execute your code like

   String uploadPath = context.getRealPath("") + File.separator + UPLOAD_DIRECTORY; 

2. You can get it in your controller like this;

   private ServletContext context;  public void setServletContext(ServletContext servletContext) {     this.context = servletContext; } 

   but for this your controller must implement ServletContextAware interface