文件上传

package servlet;

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
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.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class MyFileUpload extends HttpServlet {

     

    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String path = request.getRealPath("/touxiang/"); // 保存文件的位置

        DiskFileItemFactory factory = new DiskFileItemFactory();         
        factory.setRepository(new File(path));
         
        ServletFileUpload fu = new ServletFileUpload(factory);
        fu.setSizeMax(1024*1024);
        fu.setHeaderEncoding("UTF-8");

        try {
            List<FileItem> fileitems = fu.parseRequest(request); // 封装一下请求对象

            for (FileItem file : fileitems) {

                if (file.isFormField()) { // 是一个表单元素
                    System.out.println(file.getFieldName() + "---"
                            + file.getString());
                } else {
                    // 这是个二进制文件                    
                    String fname=file.getName();
                    System.out.println("文件名:" + fname);                    
                    file.write(new File(path,fname));
                }

            }

        } catch (Exception e) {
            e.printStackTrace();             
        }

    }

    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        // fix 修改过
        doGet(request, response);
    }

    public void init() throws ServletException {
        // Put your code here
    }

}