- import java.io.File;
- import java.io.IOException;
- 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.disk.DiskFileItemFactory;
- import org.apache.commons.fileupload.servlet.ServletFileUpload;
- public class UploadServlet extends HttpServlet {
- @SuppressWarnings("unchecked")
- public void doPost(HttpServletRequest request, HttpServletResponse response)
- throws ServletException, IOException {
- System.out.println("--------------upload-----------");
- DiskFileItemFactory factory = new DiskFileItemFactory();
- factory.setSizeThreshold(1024 * 1024); // 设置缓存大小,单位KB
- String path = request.getRealPath("/upload"); // 得到当前项目upload目录的绝对路径
- factory.setRepository(new File(path)); // 设置文件临时存储路径为path
- ServletFileUpload upload = new ServletFileUpload(factory);
- try {
- List<FileItem> list = upload.parseRequest(request);
- for (FileItem item : list) {
- // 如果item是普通表单字段
- if (item.isFormField()) {
- String name = item.getFieldName(); // 得到表单字段的name属性值
- String value = item.getString("gbk"); // 得到表单字段值,编码采用gbk
- request.setAttribute(name, value);
- } else {
- String name = item.getFieldName();
- String value = item.getName(); // 得到上传文件的路径(根据浏览器不同可能会有所差异)
- int start = value.lastIndexOf("\\");
- String fileName = value.substring(start + 1); // 截取最后一个\之后的字符,即行到上传文件名
- request.setAttribute(name, fileName);
- item.write(new File(path, fileName)); // 在硬盘上写入文件
- // 自己用流写的方法
- // OutputStream os = new FileOutputStream(new
- // File(path,fileName));
- // InputStream is = item.getInputStream();
- // byte[] buffer = new byte[500];
- // int length = 0;
- // while((length = is.read(buffer))>0){
- // os.write(buffer, 0, length);
- // }
- // os.close();
- // is.close();
- }
- }
- } catch (Exception e) {
- // TODO Auto-generated catch block
- e.printStackTrace();
- }
- request.getRequestDispatcher("upload/result.jsp").forward(request,
- response);
- }
- }
来源: http://www.phpxs.com/code/1002721/