restlet上传图片代码

客户端用的是 jquery file upload， 服务器端用的是restlet

package org.soachina.rest.component.resource;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.restlet.ext.fileupload.RestletFileUpload;
import org.restlet.representation.Representation;
import org.restlet.resource.Post;
import org.restlet.resource.ServerResource;

public class PostDemoResource extends ServerResource {
	@Post
	public Representation post(Representation entity) {
		//        getResponse().setStatus(Status.SUCCESS_OK);
		//        return new StringRepresentation("11111111111" + parameters);
		Representation rep = null;
		// 1/ Create a factory for disk-based file items
		DiskFileItemFactory factory = new DiskFileItemFactory();
		//System.out.println("大头");
		// 2/ Create a new file upload handler based on the Restlet
		// FileUpload extension that will parse Restlet requests and
		// generates FileItems.
		RestletFileUpload upload = new RestletFileUpload(factory);

		// 3/ Request is parsed by the handler which generates a
		// list of FileItems
		List<FileItem> items = null;
		try {
			items = upload.parseRepresentation(entity);
		} catch (FileUploadException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		String filename =  "";

		for (FileItem fi : items) {
			filename = fi.getName();
			System.out.println("Save image ... " + filename);
			/*新建一个图片文件*/
			String extName=filename.substring(filename.lastIndexOf("."));
	        String newName=new SimpleDateFormat("yyyyMMDDHHmmssms").format(new Date());
	        File file=new File(newName+extName);
	        if(!file.exists()){//判断文件是否存在
	            try {
	                file.createNewFile();  //创建文件  

	            } catch (IOException e) {
	                // TODO Auto-generated catch block
	                e.printStackTrace();
	            }
	        }
	        /*获取文件路径*/
	        String path_=file.getPath();
	        /*获取绝对路径名*/
	        String absPath=file.getAbsolutePath();
	        /*获取父亲文件路径*/
	        String parent=file.getParent();
			try {
				fi.write(file);
			} catch (Exception e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}

		}
		return null;
	}
}