1.html/jsp主页
<%@ page language="java" contentType="text/html; charset=UTF-8"duoUp.jsp
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<%
String path=request.getContextPath();
request.setAttribute("path", path);
%>
</head>
<body>
<form action="${path}/MultiUp" method="post" enctype="multipart/form-data">
<table>
<tr>
<td>上传文件</td>
<td>
<input type="file" name="fileN1" />
</td>
</tr>
<tr>
<td>上传文件</td>
<td>
<input type="file" name="fileN2" />
</td>
</tr>
<tr>
<td>上传文件</td>
<td>
<input type="file" name="fileN3" />
</td>
</tr>
<tr>
<td colspan="2">
<input type="submit" />
<input type="reset" />
</td>
</tr>
</table>
</form>
</body>
</html>
2.过滤器解决编码问题
package com.ser;Filter01.java
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Filter01 implements Filter
{
@Override
public void destroy()
{
}
@Override
public void doFilter(ServletRequest arg0, ServletResponse arg1,
FilterChain arg2) throws IOException, ServletException
{
HttpServletRequest request= (HttpServletRequest)arg0;
HttpServletResponse response=(HttpServletResponse)arg1;
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html charset=utf-8");
//System.out.println(">>>>>>>>>>>>");
arg2.doFilter(request, response);
}
@Override
public void init(FilterConfig arg0) throws ServletException
{
}
}
3.多文件上传服务器处理
package multiup;MultiUp.java
import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;
import org.apache.commons.collections.CollectionUtils;
/**
* Servlet implementation class MultiUp
*/
@WebServlet("/MultiUp")
@MultipartConfig(location="e://uploadFile",
fileSizeThreshold=1024*1024*10,
maxFileSize=1024*1024*200,
maxRequestSize=1024*1024*300
)
public class MultiUp extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public MultiUp() {
}
@Override
public void init(ServletConfig config) throws ServletException
{
File file = new File("e://uploadFile");
if(!file.exists()&&!file.isDirectory())
{
file.mkdir();
}
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Collection<Part> parts= request.getParts();
StringBuffer sb=new StringBuffer();
if(!CollectionUtils.isEmpty(parts))
{
for(Part part:parts)
{
String header=part.getHeader("content-disposition");
String filename= header.substring(header.indexOf("filename")+10,header.lastIndexOf("\""));
part.write(filename);
sb=sb.append(filename).append(",");
}
}
String str =sb.toString().substring(0,sb.toString().length()-1);
response.getWriter().print(str+"上传成功!");
}
}