Servet实现文件上传(fileupload)
1.首先要到apache官网上下载commons-fileupload-1.2.2-bin.jar和其依赖的commons-io-2.4-bin.jar
Jsp:
[html]
<form action="UploadServlet" method="post" enctype="multipart/form-data">
username:<input type="text" name="username"><br>
file:<input type="file" name="file"><br>
file1:<input type="file" name="file1"><br>
<input type="submit" value="submit">
</form>
Servlet:
[java]
package com.wildcat.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.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class UploadServlet extends HttpServlet {
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
DiskFileItemFactory factory=new DiskFileItemFactory();
String path=request.getRealPath("/upload");
factory.setRepository(new File(path));
factory.setSizeThreshold(1024*1024);
ServletFileUpload upload=new ServletFileUpload(factory);
try{
List <FileItem> list=(List <FileItem>)upload.parseRequest(request);
for(FileItem item:list){
String name=item.getFieldName();//调教的文本 域名
if (item.isFormField()){//如果上传的是文本域
String value=item.getString();//提交的内容
System.out.println(name+" : "+value);
request.setAttribute(name, value);
}else {//如果上传的是文件
String value=item.getName();
//下面是对特殊浏览器的处理
int start=value.lastIndexOf("\\");
String fileName=value.substring(start+1);
request.setAttribute(name, fileName);
item.write(new File(path,fileName));
} www.2cto.com
}
}catch(Exception e){
e.printStackTrace();
}
request.getRequestDispatcher("fileuploadResult.jsp").forward(request, response);
}
}
上一篇: 详解JSP
下一篇: 中联通酝酿成立云计算公司