怎样用servlet实现文件上传，并将路径插入到数据库中
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前台jsp代码：
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<form action="fileupLoadServlet" method="post" enctype="multipart/form-data">
文件上传<input type="file" name="up">
<input type="submit" value="提交">
</form>
</body>
</html>
后台servlet代码：import java.util.List;import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
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 FileUpLoadServlet extends HttpServlet{ public void service(ServletRequest arg0, ServletResponse arg1)
throws ServletException, IOException {
HttpServletRequest request = (HttpServletRequest)arg0;
System.out.println(request.getContentType());
System.out.println(request.getContentLength());
HttpServletResponse response = (HttpServletResponse)arg1;
DiskFileItemFactory factory = new DiskFileItemFactory();
ServletFileUpload fileUpload = new ServletFileUpload(factory);
OutputStream outputStream = null;
InputStream inputStream = null;
try {
List items = fileUpload.parseRequest(request);
for (Iterator iterator = items.iterator(); iterator.hasNext();) {
FileItem name = (FileItem) iterator.next();
if(!name.isFormField()){
String fieldName = name.getFieldName();
String fileName = name.getName();
String lastFileName = request.getRealPat("/")
+ System.currentTimeMillis()
+ fileName.substring(fileName.lastIndexOf("."), outputStream = new FileOutputStream(new File(lastFileName ),
fileName.length())));
inputStream = name.getInputStream();
byte[] bs = new byte[1024];
int length = 0;
while(null != inputStream && (length = inputStream.read(bs))!=-1){
outputStream.write(bs);
}
}
//把lastFileName存到数据库（这里就不写了不只lz用的什么方式）
}
} catch (Exception e) {
// TODO: handle exception
}finally{
inputStream.close();
outputStream.flush();
outputStream.close();
}
}
}