请问我这个方法写的哪里有问题

程序总报错提示这个方法必须返回一个Map类型的。我在函数末尾有return啊

package utils;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import foodInfo.FoodInfo;

public class UploadUtils {
 
 public static Map<String, Object> UploadFile(HttpServletRequest request, String uploadDirectory) throws  IOException, FileUploadException{

     try{
      // 定义一个Map,用来存放添加页面中用户输入的所有控件对应的值
     Map<String ,Object> map = new HashMap<String,Object>();
     // 1.创建一个磁盘文件项工厂对象
     DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();
     // 2.创建一个核心解析类
     ServletFileUpload servletFileUpload = new ServletFileUpload(diskFileItemFactory);
     // 3.解析request请求，返回的是List集合，List集合中存放的是FileItem对象
     List<FileItem> list = servletFileUpload.parseRequest(request);
     //定义一个集合，用来存放口味数据
     List<String> taste=new ArrayList<String>();
     String url=null;
     //遍历FileItem集合，判断是表单项还是文件上传项
     for(FileItem fileItem:list)
     {
      if(fileItem.isFormField())
      {
       //普通表单项
       //接收表单项对应的值
       String name=fileItem.getFieldName();//获得表单项name的属性值
       String value=fileItem.getString("utf-8");//获得表单项的值
       //接收复选框的值
       if(name.equals("taste"))
       {
        String tasteValue=fileItem.getString("utf-8");
        taste.add(tasteValue);
         tasteValue=taste.toString().substring(1, taste.toString().length()-1);
        System.out.println(name+" "+ tasteValue);
        map.put(name, tasteValue);
       }else
       {
        map.put(name, value);
       }
      }else
      {
       //文件上传项
       //文件上传功能
       //获得文件上传的名称
       String fileName=fileItem.getName();
       if(fileName!=null&&!"".equals(fileName))
       {
        //通过工具类获得唯一文件名
         //将文件名的前面部分截取.jpg
         int idx=fileName.lastIndexOf(".");
         String content= fileName.substring(idx);
        String uuidFileName=  UUID.randomUUID().toString().replace("-", "")+content;
        //获得文件上传的数据
        InputStream is=fileItem.getInputStream();
        //获得文件上传的路径
        String path=request.getServletContext().getRealPath( uploadDirectory);
        //将输入流对接到输出流
         url=path+"\\"+uuidFileName;
        OutputStream os=new FileOutputStream(url);
        int len=0;
        byte[] b=new byte[1024];
        while((len=is.read(b))!=-1)
        {
         os.write(b, 0, len);
        }
        os.flush();
        os.close();
        is.close();
       }
      }
      
      return map; 
     }
     
     }catch(IOException e)
     {
      e.printStackTrace();
     }catch(FileUploadException e)
     {
      e.printStackTrace();
     }
  
 }
}