使用commons-fileupload组件上传文件

这是使用了commons-fileupload-1.2.1.jar 和 commons-io-1.4.jar这两个组件来上传文件的！

package upload;

import java.io.File;
import java.io.IOException;
import java.util.List;

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

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class UploadServlet extends HttpServlet {
	
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		this.doPost(request, response);
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		request.setCharacterEncoding("UTF-8");
		//1、先获取工厂对象
		DiskFileItemFactory  factory = new DiskFileItemFactory();
		//2、获取上传处理对象（要把工厂对象传递给它）
		ServletFileUpload upload = new ServletFileUpload(factory);
		upload.setSizeMax(32768);//允许最大32KB
		//3、解析请求参数，过滤掉不是文件上传框的参数
		List<?> itemList = null;
		try {
			itemList = upload.parseRequest(request);
		} catch (FileUploadException e) {
			e.printStackTrace();
		}
		
		for(int i = 0;i<itemList.size();i++){
			FileItem fileItem = (FileItem)itemList.get(i);
			System.out.println("文件名字为："+fileItem.getName());
			
			if(!fileItem.isFormField()){//判断是不是文件上传控件
				//先获取客户端上传文件的File对象
				System.out.println(fileItem.getName());
				File sourceFile = new File(fileItem.getName());
				System.out.println(sourceFile.getName());
				//创建将要上传至服务器端的文件对象
				File destFile = new File("D:\\temp", sourceFile.getName());
				try {
					fileItem.write(destFile);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		}
		
		System.out.println("上传成功");
		
		
		
		
		
	}

}