导入包:
commons-fileupload-1.3.1.jar
commons-io-2.4.jar
commons-fileupload依赖于commons-io,commons-io-2.4必须是JDK6+;
下载地址:
http://commons.apache.org/proper/commons-fileupload/download_fileupload.cgi
http://commons.apache.org/proper/commons-io/download_io.cgi
index.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<h1>Hello World!</h1> <form name="myform" action="FileUploadTestServlet" method="post" enctype="multipart/form-data">
姓名: <br>
<input type="text" name="name" size="15"><br>
附件1:<br>
<input type="file" name="myfile1"><br>
附件2:<br>
<input type="file" name="myfile2"><br>
<br>
<input type="submit" name="submit" value="Commit">
</form>
</body>
</html>
FileUploadTestServlet.java
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
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.FileItemFactory;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload; /**
*
* @author y
*/
public class FileUploadTestServlet extends HttpServlet { protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter(); if(!ServletFileUpload.isMultipartContent(request)){
return;
} FileItemFactory fileFactory = new DiskFileItemFactory(); ServletFileUpload fileUpload = new ServletFileUpload(fileFactory); try {
List items = fileUpload.parseRequest(request);
Iterator iter = items.iterator(); while(iter.hasNext()){
FileItem item = (FileItem)iter.next();
if(item.isFormField()){
out.print("<p>"+item.getFieldName()+":"+new String(item.getString().getBytes("ISO8859-1"), "utf-8")+"</p>");
}else{
String path = "/home/y/my_temp/upload"+File.separator+item.getName();
File disk = new File(path);
item.write(disk); out.print("<p>文件保存到:"+path+"</p>");
}
}
} catch (FileUploadException ex) {
Logger.getLogger(FileUploadTestServlet.class.getName()).log(Level.SEVERE, null, ex);
} catch (Exception ex) {
Logger.getLogger(FileUploadTestServlet.class.getName()).log(Level.SEVERE, null, ex);
}finally{
out.close();
} } @Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
} @Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
} }