复制代码
代码如下:
<input ty PE ="file" n am e="multipleFileUpload" multiple />
下面是页面的详细代码：
复制代码
代码如下:
<!DOCTYPE ht ML >
<html>
<head>
< ;m eta http-equiv="Content -t ype" content="text/html; charset=gb2312" />
<t IT le>Solution 4-5: Sending multiple files</title>
</head>
<body>
<form id="myForm"
action="http://10.10.25.31:8080/myupload/UploadPhotoServlet" ENCTYPE="multipart/form-data" METHOD="POST">
<input type="file" name="multipleFileUpload" multiple /> <input
type="s ub mit" value="提交"> <input type="reset" value="重设">
</form>
</body>
</html>
java后台的详细代码：
复制代码
代码如下:
import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
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 .COM mons.fileupload.Fil ei tem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload. disk .DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
/**
* Servlet implementation class UploadPhotoServlet
*/
public class UploadPhotoServlet extends HttpServlet {
PR ivate stat ic final long serialVersionUID = 1L;
/**
* @see HttpServlet # HttpServlet()
*/
public UploadPhotoServlet() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) t hr ows ServletException, IOException {
// TODO Auto-generated method stub
doPost(request,response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
@Sup Press Warnings("unchecked")
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String imagePath="c:\\uploa DF ile\\Image\\"+get each Date()+"\\";//按日期 生成文件 夹
File uploadPath=new File(imagePath);
if(!uploadPath.exists()){
uploadPath.mkdirs();
}
File tmp =new File("c:\\tmp\\");
if(!tmp.exists()){
tmp.mkdirs();
}
DiskFileItemFactory factory=new DiskFileItemFactory ();//创建磁盘工厂
factory.setRepository(tmp);//设置 文件缓存 路径
factory.setSizeThreshold(10 * 1096 );//将文件保存在内存还是磁盘临时文件夹的默认临界值，值为10240，即10kb
ServletFileUpload sfu=new ServletFileUpload(factory);//创建处理工具
sfu.setSizeMax(10*1024*1024);// 服务器 端可以接收的最大文件大小，-1表示无上限
String fileName=null;
try {
List<FileItem> list=sfu.parseRequest(request);//解析
if(list.size()<1){
return;
}
for(int j=0;j<list.size();j++){
FileItem item=list.get(j);
fileName=item.getName();
if(fileName.equals("")){
request.getRequestDispatcher("/com/ Visual izerPhoto.jsp").forward(request, response);
return;
}
int pos=fileName.lastIndexOf(".");//取图片文件格式
if(pos>0){
Date date=new Date();
fileName=imagePath+date.getTime()+fileName.substring(pos);
}
Sys tem.out.println("item:"+item);
item.write(new File(fileName));//写到磁盘
}
} catch (FileUploadException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
// 13-11-15
public static String getEachDate() {
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DATE, 0);
String yesterday = new SimpleDateFormat(" yy yy-MM-dd ").format(cal
.getTime());
String[] dates = yesterday.split("-");
String realDate = dates[0].substring(2, 4) + "-" + dates[1] + "-"
+ dates[2];
return realDate.trim();
}
}
下面是效果图：
总结
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