servlet上传功能

最新推荐文章于 2025-05-04 09:20:52 发布

iteye_14760

最新推荐文章于 2025-05-04 09:20:52 发布

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分类专栏： java web 文章标签： Servlet CSS JavaScript jQuery JSP ViewUI

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index.jsp

<%-- 
    Document   : index
    Created on : Jul 15, 2010, 3:20:59 PM
    Author     : Administrator
--%>

<%@page contentType="text/html" 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>JSP Page</title>
        <script type="text/javascript" src="./js/jquery-1.3.2.js"></script>
        <script type="text/javascript">
            $(function(){

            });

            function displayImg(){
                $("#loading").css("display","");
                $("#submit").css("display","none");
            }

            function hiddenImg(){
                $("#loading").css("display","none");
                $("#submit").css("display","");
            }

        </script>
    </head>
    <body>
        submit from form<br/>
        <fieldset>
            <form action="/UploadFileWebApplication/UploadFileServlet" method="post" enctype="multipart/form-data" target="ifm" onsubmit="displayImg();">
                <input type="file" name="UploadFile"/>
                <img id="loading" src="./img/loading.gif" border="0" style="display: none" />
                <input id="submit" type="submit" value="submig"/>
            </form>

            <iframe id="ifm" name="ifm" style="display:none"></iframe>
        </fieldset>
    </body>
</html>

uploadservlet.java部分代码

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        DataInputStream dis =new DataInputStream(request.getInputStream());
        int fileLength = request.getContentLength();
 
        byte dataBytes[] = new byte[fileLength];
        for (int i =0;i<fileLength;i++){
            dataBytes[i] = dis.readByte();
        }

        String dataString = new String(dataBytes);
        System.out.println(this.getServletContext().getRealPath("/"));
        FileOutputStream fos = new FileOutputStream(this.getServletContext().getRealPath("/")+"/uploadfiles/test.txt");
        fos.write(dataString.getBytes(), 0, dataString.length());
        PrintWriter out = response.getWriter();
        out.print("<script type='text/javascript'>window.parent.hiddenImg();</script>");
    }