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Re:问：我通过vb（xmlhttp）提交过来的文件，jsp怎样接收？下面是asp的，那位高人改改 [Re:itking]

iqueen

发贴: 4

于 2004-09-27 17:46

import java.io.*;

import javax.servlet.*;

import javax.servlet.http.*;

public class FileUpload extends HttpServlet {

public void doPost(HttpServletRequest request,

HttpServletResponse response)

throws IOException, ServletException {

response.setContentType("text/html");

PrintWriter out = response.getWriter();

out.println("<html>");

out.print("File upload success. <a href=\"/jspbook/files/");

out.print("\">Click here to browse through all uploaded ");

out.println("files.</a><br>");

ServletInputStream sis = request.getInputStream();

StringWriter sw = new StringWriter();

int i = sis.read();

for (;i!=-1&&i!='\r';i=sis.read()) {

sw.write Light Bulb

;

}

sis.read(); // ditch '\n'

String delimiter = sw.toString();

int count = 0;

while(true) {

StringWriter h = new StringWriter();

int[] temp = new int[4];

temp[0] = (byte)sis.read();

temp[1] = (byte)sis.read();

temp[2] = (byte)sis.read();

h.write(temp[0]);

h.write(temp[1]);

h.write(temp[2]);

// read header

for (temp[3]=sis.read();temp[3]!=-1;temp[3]=sis.read()) {

if (temp[0] == '\r' &&

temp[1] == '\n' &&

temp[2] == '\r' &&

temp[3] == '\n') {

break;

}

h.write(temp[3]);

temp[0] = temp[1];

temp[1] = temp[2];

temp[2] = temp[3];

}

String header = h.toString();

int startName = header.indexOf("name=\"");

int endName = header.indexOf("\"",startName+6);

if (startName == -1 || endName == -1) {

break;

}

String name = header.substring(startName+6, endName);

if (name.equals("file")) {

startName = header.indexOf("filename=\"");

endName = header.indexOf("\"",startName+10);

String filename =

header.substring(startName+10,endName);

ServletContext sc =

request.getSession().getServletContext();

File file = new File(sc.getRealPath("/files"));

file.mkdirs();

FileOutputStream fos =

new FileOutputStream(

sc.getRealPath("/files")+"/"+filename);

// write whole file to disk

int length = 0;

delimiter = "\r\n"+delimiter;

byte[] body = new byte[delimiter.length()];

for (int j=0;j<body.length;j++) {

body[j] = (byte)sis.read();

}

// check it wasn't a 0 length file

if (!delimiter.equals(new String(body))) {

int e = body.length-1;

i=sis.read();

for (;i!=-1;i=sis.read()) {

fos.write(body[0]);

for (int l=0;l<body.length-1;l++) {

body[l]=body[l+1];

}

body[e] = (byte)i;

if (delimiter.equals(new String(body)))

break;

}

length++;

}

}

fos.flush();

fos.close();

}

if (sis.read() == '-' && sis.read() == '-')

break;

}

}

out.println("</html>");

}

public void doGet(HttpServletRequest request,HttpServletResponse response)

throws IOException, ServletException {

doPost(request, response);

}

}

话题树型展开

人气	标题	作者	字数	发贴时间
2459	问：我通过vb（xmlhttp）提交过来的文件，jsp怎样接收？下面是asp的，那位高人改改	itking	909	2004-09-06 11:09
2023	Re:问：我通过vb（xmlhttp）提交过来的文件，jsp怎样接收？下面是asp的，那位高人改改	itking	3	2004-09-06 16:42
1974	Re:问：我通过vb（xmlhttp）提交过来的文件，jsp怎样接收？下面是asp的，那位高人改改	itking	9	2004-09-07 08:57
2013	Re:问：我通过vb（xmlhttp）提交过来的文件，jsp怎样接收？下面是asp的，那位高人改改	xml1123	62	2004-09-20 14:23
2002	Re:问：我通过vb（xmlhttp）提交过来的文件，jsp怎样接收？下面是asp的，那位高人改改	iqueen	2816	2004-09-27 17:46

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