applet截图上传(1)

UploadServlet.java

package screencapture.servlet;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUpload;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.RequestContext;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.fileupload.servlet.ServletRequestContext;

public class UploadServlet extends HttpServlet {

	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		request.setCharacterEncoding("gbk");
		RequestContext requestContext = new ServletRequestContext(request);
		String fileName = request.getParameter("fileName");
		String filePath = "d:/OSSWiki_WEB/confluence-3.0-std/confluence/screencapture/upload/";
		
		if (FileUpload.isMultipartContent(requestContext)) {

			DiskFileItemFactory factory = new DiskFileItemFactory();
			factory.setRepository(new File(filePath));
			ServletFileUpload upload = new ServletFileUpload(factory);
			upload.setSizeMax(2000000);
			List items = new ArrayList();
			try {
				items = upload.parseRequest(request);
			} catch (FileUploadException e1) {
				System.out.println("文件上传发生错误" + e1.getMessage());
			}

			Iterator it = items.iterator();
			while (it.hasNext()) {
				FileItem fileItem = (FileItem) it.next();
				if (fileItem.isFormField()) {
					System.out.println(fileItem.getFieldName()
							+ "   "
							+ fileItem.getName()
							+ "   "
							+ new String(fileItem.getString().getBytes(
									"iso8859-1"), "gbk"));
				} else {
					System.out.println(fileItem.getFieldName() + "   "
							+ fileItem.getName() + "   "
							+ fileItem.isInMemory() + "    "
							+ fileItem.getContentType() + "   "
							+ fileItem.getSize());

					if (fileItem.getName() != null && fileItem.getSize() != 0) {
						File newFile = new File(filePath+fileName+".jpg");
						try {
							fileItem.write(newFile);
						} catch (Exception e) {
							e.printStackTrace();
						}
					} else {
						System.out.println("文件没有选择 或 文件内容为空");
					}
				}

			}
		}

	}

	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}

}