用jsp、Servlet实现下传文件
日期：2014-05-16 浏览次数：20464 次
最近项目中遇到需要导入excel文件并将文件中数据保存到数据库的问题，于是特意练习了一下文件的上传。
一、页面upload.jsp文件
<body>
<h2>导入标准xml关系模式</h2>
<form name="upform" action="UploadServlet" method="POST" enctype="multipart/form-data">
<input type ="file" name="file1" id="file1"/><br/>
<input type ="file" name="file2" id="file2"/><br/>
<input type ="file" name="file3" id="file3"/><br/>
<input type="submit" value="Submit" /><br/>
<input type="reset" />
</form>
</body>
二、servlet文件UploadServlet.java
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.DefaultFileItemFactory;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.FileItemIterator;
import org.apache.commons.fileupload.FileItemStream;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.apache.commons.fileupload.util.Streams;
public class UploadServlet extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
File tmpDir = null;//初始化上传文件的临时存放目录
File saveDir = null;//初始化上传文件后的保存目录
public UploadServlet() { super(); }
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request,response);
}
public void init() throws ServletException {
super.init();
String tmpPath = "c:\\tmpdir";
String savePath = "c:\\updir";
tmpDir = new File(tmpPath);
saveDir = new File(savePath);
if(!tmpDir.isDirectory())
tmpDir.mkdir();
if(!saveDir.isDirectory())
saveDir.mkdir();
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try{
if(ServletFileUpload.isMultipartContent(request)){
DiskFileItemFactory dff = new DiskFileItemFactory();//创建该对象
dff.setRepository(tmpDir);//指定上传文件的临时目录
