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积分:285 |
发帖:317 |
登录:2024/3/26 |
注册:2006/6/28 |
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(1楼)【原创】javascipt版的JSP无组件上传和验证码
以下代码仅在Resin 2.* 下运行 function Upload()
{
var me = this;
me.Msg = "";
me.Field = new Array;
me.Charset = "UTF-8";
me.MaxSize = 256 * 1024 - 3;
me.Filter = "gif|jpg|png|txt|rar|cab|zip|htm|html|mht|xls|doc|bmp";
me.Form = function(field)
{
var arr = new Array;
for(var i = 0; i < me.Field.length; i++)
{
if(me.Field[i].FormName == field) arr.push(me.Field[i]);
}
return arr.length > 1 ? arr : arr[0];
}
me.ReadForm = function()
{
if(request.getContentLength() > me.MaxSize)
{
me.Msg = "\u6570\u636E\u592A\u5927";
return false;
}
return !ParseData(GetData());
}
me.SaveFile = function(strPath)
{
if(!strPath) strPath = "Upload";
var d = new Date;
strPath = [strPath, d.getFullYear(), TwoNum(d.getMonth() + 1), TwoNum(d.getDate())].join("/");
var fold = new java.io.File(request.getRealPath(strPath) + "");
for(var i = 0; i < me.Field.length; i++)
{
var fld = me.Field[i];
var fname = fld.MakeName(d);
if(!fld.MimeType || !fld.FileName || fld.Msg) continue;
if(!fold.exists()) fold.mkdirs();
var file = new java.io.File(fold, fname);
var fw = new java.io.FileOutputStream(file);
var sw = new java.io.OutputStreamWriter(fw, "latin1");
sw.write(fld);
sw.close();
fld.SavePath = [strPath, fname].join("/");
}
}
me.Delete = function(path)
{
var file = new java.io.File(request.getRealPath(path) + "");
return file["delete"]();
}
function GetData()
{
var maxBuffer = 256 * 1024 - 3;
var cache = new Array;
var is = request.getReader();
var ar = new Array;
while(true)
{
var data = is.read();
if(!data) break;
ar.push(data);
if(ar.length > maxBuffer)
{
cache.push(ar.join(""));
ar.length = 0;
}
}
if(ar.length) cache.push(ar.join(""));
return cache.join("").split("--" + request.getContentType().slice(30));
}
function ParseData(data)
{
for(var i = 1; i < data.length - 1; i++)
{
var fld = new FieldClass;
ReadHead(data[i], fld);
ReadBody(data[i], fld);
me.Field.push(fld);
}
}
function ReadHead(str, fld)
{
str = str.split("\r\n\r\n")[0];
fld.FormName = str.match(/ name="(.*?)"/)[1];
fld.MimeType = (str.match(/Type: (.*)$/) || [])[1];
fld.FileName = fld.MimeType ? str.match(/ filename="(.*?)"/)[1] : "";
fld.FileName = new java.lang.String(fld.FileName.getBytes("latin1"), me.Charset @ String);
}
function ReadBody(str, fld)
{
str = str.replace(/(.*?)\r\n/, "");
str = str.replace(/(.*?)\r\n/, "");
str = str.replace(/(.*?)\r\n/, "");
if(fld.MimeType) str = str.replace(/\r\n/, "");
fld.Data = str.replace(/\r\n$/, "");
if(!fld.MimeType) fld.Data = new java.lang.String(fld.Data.getBytes("latin1"), me.Charset @ String);
}
function FieldClass()
{
}
FieldClass.prototype.toString = function()
{
return this.Data;
}
FieldClass.prototype.MakeName = function(d)
{
if(!d) d = new Date;
var ext = this.FileName.split(".");
ext = ext.length > 1 ? ext.pop() : "";
var h = TwoNum(d.getHours());
var m = TwoNum(d.getMinutes());
var s = TwoNum(d.getSeconds());
var filename = h + m + s + TwoNum();
if(!ext || !ext.match(new RegExp("^(" + me.Filter + ")$", "i")))
this.Msg = "\u4E0D\u5141\u8BB8\u7684\u6587\u4EF6\u7C7B\u578B";
if(ext) filename += "." + ext;
return filename;
}
function TwoNum(n)
{
if(!n) n = parseInt(Math.random() * 100);
if(n < 10) n = "0" + n;
return n + "";
}
} 放在Classes\Rimifon目录下,支持多文件上传,数据文件混合上传。
调用: import Rimifon.Upload;
var upload = new Upload;
upload.MaxSize = 2 * 1024 * 1024; // 允许上传最大两M
upload.Filter = "gif|jpg|bmp|txt|zip|rar";
upload.ReadForm();
upload.SaveFile();
if(upload.Msg) out.print(upload.Msg); 输出数据:upload.Form("text1")
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★☆☆☆☆☆☆☆☆☆ |
积分:285 |
发帖:317 |
登录:2024/3/26 |
注册:2006/6/28 |
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(2楼)【原创】最简单的验证码
<%@ page contentType="image/jpeg" language="javascript" import="javax.imageio.*" %><%
new function Page_Load()
{
response.setHeader("Cache-Control", "no-cache");
var img = new Verify;
img.OutImage(request.getParameter("verId"));
}
function Verify()
{
var me = this;
me.Width = 35;
me.Height = 15;
me.Left = 3;
me.Top = 12;
me.OutImage = function(veriKey, veriValue)
{
if(!veriKey) veriKey = "verify";
me.Data = veriValue || GetRand(4);
var img : java.awt.image.BufferedImage = new java.awt.image.BufferedImage(me.Width @ int, me.Height @ int, 1);
var grh : java.awt.Graphics = img.getGraphics();
grh.drawString(me.Data @ String, me.Left, me.Top);
grh.dispose();
ImageIO.write(img, "JPEG", response.getOutputStream() @ java.io.OutputStream);
session.setAttribute(veriKey, me.Data);
return me.Data;
}
function GetRand(cnt)
{
var data = Math.random() + "";
return data.substr(2, cnt);
}
}
%>
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