package cn.itcast.servlet;

import java.io.File;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.util.Scanner;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItemIterator;

import org.apache.commons.fileupload.FileItemStream;

import org.apache.commons.fileupload.FileUploadException;

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

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

import org.apache.commons.io.FileUtils;

/**

 * FileItemStream示例

 * @author <a href="mailto:wj@itcast.cn">王健</a>

 * @version 1.0 2012-3-15

 */

public class Upload3Servlet extends HttpServlet {

public void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

long start = System.currentTimeMillis();

String path = getServletContext().getRealPath("/imgs");

DiskFileItemFactory factory = new DiskFileItemFactory();

factory.setSizeThreshold(1024 * 8);// 设置8k的缓存空间

factory.setRepository(new File("d:/a"));

ServletFileUpload upload = new ServletFileUpload(factory);

upload.setHeaderEncoding("UTF-8");// 设置文件名处理中文编码

try {

FileItemIterator fii = upload.getItemIterator(request);// 使用遍历类

while (fii.hasNext()) {

FileItemStream fis = fii.next();

if (fis.isFormField()) {//FileItemStream同样使用OpenStream获取普通表单的值

InputStreamReader in = new InputStreamReader(fis.openStream(),"UTF-8");

Scanner sc = new Scanner(in);

StringBuffer sb = new StringBuffer();

if(sc.hasNextLine()){

sb.append(sc.nextLine());

}

System.err.println("Desc:"+sb.toString());

} else {

String fileName = fis.getName();

fileName = fileName

.substring(fileName.lastIndexOf("\\") + 1);

System.err.println("文件名为：" + fileName);

InputStream in = fis.openStream();

FileUtils.copyInputStreamToFile(in, new File(path+"/"+fileName));

}

}

} catch (FileUploadException e) {

e.printStackTrace();

}

long end = System.currentTimeMillis();

System.err.println("用时:"+(end-start));

}

}