jsp完整图片上传

最新推荐文章于 2025-07-30 09:24:27 发布

原创最新推荐文章于 2025-07-30 09:24:27 发布 · 109 阅读

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#JSP #Java #SQL #Apache #Microsoft

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本文介绍了一个使用Java实现的简单文件上传系统。该系统利用JSP和Servlet技术完成文件的上传功能，并将文件信息存入SQL Server数据库。具体包括数据库连接类DBConn2.java的设计与实现，以及文件上传页面fileupload.jsp的处理流程。

数据库设计如图：
DBConn2.java

package com.db;

import java.sql.Connection;
import java.sql.DriverManager;

public class DBConn2 {

String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=test";
String user="sa";
String pwd="123456";
Connection conn=null;
public Connection get()
{
try {
Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
conn=DriverManager.getConnection(url,user,pwd);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return conn;
}
}

load.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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 'load.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">


</head>

<body>
<form action="fileupload.jsp" enctype="multipart/form-data" method="post">
<input type="file" name="filename"/>
<input type="submit" value="上传"/>
</form>
</body>
</html>

fileupload.jsp

<%@ page language="java" import="java.util.*,com.db.*" pageEncoding="utf-8"%>
<%@ page import="java.sql.*" %>
<%@page import="org.apache.commons.fileupload.disk.DiskFileItem"%>
<%@page import="org.apache.commons.fileupload.DiskFileUpload"%>
<%@page import="org.apache.commons.fileupload.FileItem"%>
<%@page import="java.io.InputStream"%>
<%
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 'fileupload.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">


</head>

<body>
<%
PreparedStatement ps=null;
DBConn2 db=new DBConn2();
Connection conn=db.get();
try{
String sql="insert into test.dbo.file_tbl(filename,filecontent,createdate) values(?,?,GETDATE())";

DiskFileUpload fu=new DiskFileUpload();
fu.setHeaderEncoding("utf-8");
fu.setSizeMax(1024*1024*20);
fu.setSizeThreshold(4096);//设置缓冲区4k
fu.setRepositoryPath("c:\\uploade");

List file=fu.parseRequest(request);
Iterator it=file.iterator();
while(it.hasNext()){
FileItem fi=(FileItem)it.next();
if(!fi.isFormField()){
String file1=fi.getName();
String filename=file1.substring(file1.lastIndexOf("\\")+1);
String filecontent=fi.getContentType();
int filesize=(int)fi.getSize();

out.write("文件名"+filename+"<br>");
out.write("文件类型："+filecontent+"<br>");
out.write("文件大小:"+filesize+"<br>");

ps=conn.prepareStatement(sql);
InputStream is=fi.getInputStream();
System.out.println(filesize);
ps.setString(1,filename);

ps.setBinaryStream(2,is,filesize);
ps.executeUpdate();
is.close();
out.println("文件上传成功！！！");
}
}
}catch(Exception e){
e.printStackTrace();
}finally{
ps.close();
conn.close();
}

%>
</body>
</html>