MVC下读取XML生成动态表单的例子

开发
本文是在MVC下动态表单怎么生成的这一问题引出的,作者将通过实例讲解的方式,讲述如何在MVC下读取XML生成动态表单。

我们来看下面的例子:

接着上次的MVCMembership来讲

我们首先添加一个目录XML。然后添加View:

1.checkXml.aspx 用来检查我们输入的XML格式(利用XSD检查)

2.New.aspx 用来新增XML表单的

3.Show.aspx 用来显示XML表单的

4.ShowResult.aspx 用来显示XML表单提交的结果的

一、数据库结构

要用到动态的表单,这里我们利用Sqlserver2005的XML类型来保存,建表的SQL如下:

use Test
/*==============================================================*/
/* DBMS name:      Microsoft SQL Server 2005                    */
/* Created on:     2009/5/8 7:56:50                             */
/*==============================================================*/
if exists (select 1
from  sysindexes
where  id    = object_id('XMLFORM')
and   name  = 'IDX_XML'
and   indid > 0
and   indid < 255)
drop index XMLFORM.IDX_XML
go
if exists (select 1
from  sysindexes
where  id    = object_id('XMLFORM')
and   name  = 'IDX_ID'
and   indid > 0
and   indid < 255)
drop index XMLFORM.IDX_ID
go
if exists (select 1
from  sysobjects
where  id = object_id('XMLFORM')
and   type = 'U')
drop table XMLFORM
go
/*==============================================================*/
/* Table: XMLFORM                                               */
/*==============================================================*/
create table XMLFORM (
ID                   int                  identity,
FORMXML              xml                  not null,
constraint PK_XMLFORM primary key (ID)
)
go
declare @CurrentUser sysname
select @CurrentUser = user_name()
execute sp_addextendedproperty 'MS_Description',
'XMLFORM',
'user', @CurrentUser, 'table', 'XMLFORM'
go
/*==============================================================*/
/* Index: IDX_ID                                                */
/*==============================================================*/
create unique index IDX_ID on XMLFORM (
ID ASC
)
go
/*==============================================================*/
/* Index: IDX_XML                                               */
/*==============================================================*/
create PRIMARY XML INDEX IDX_XML on XMLFORM (
FORMXML
)
go

好了我们建了一个名为XMLForm的表,其中ID自增,FORMXML为我们需要的XML表单的内容

二、编写XML的Controller

XMLController.cs

主要的action

1.New

[[2719]]498)this.style.width=498;" height=148>

[[2720]]498)this.style.width=498;" height=127>

[[2721]]498)this.style.width=498;" height=127> [[2722]]498)this.style.width=498;" height=127>


[AcceptVerbs(HttpVerbs.Post), ValidateInput(false)]
public ActionResult New(string xmlContent)
{
System.Threading.Thread.Sleep(2000);    //模拟提交等待
xmlContent = Server.UrlDecode(xmlContent);
if (!string.IsNullOrEmpty(xmlContent))
{
//if (!CheckXML(xmlContent, out strError)) //服务器端检测,如果用了ajax检测,就没必要了
//{
//    ModelState.AddModelError("_FORM",strError); 
//    return View();
//}
XMLFormDataContext db = new XMLFormDataContext();
TransactionOptions opt = new TransactionOptions();
ViewData["xmlContent"] = xmlContent;
opt.IsolationLevel = IsolationLevel.Serializable;
using (TransactionScope tran = new TransactionScope(TransactionScopeOption.RequiresNew, opt))
{
XMLFORM f = new XMLFORM();
try
{
f.FORMXML = XElement.Parse(xmlContent);
db.XMLFORMs.InsertOnSubmit(f);
db.SubmitChanges();
var id = db.XMLFORMs.Max(p => p.ID);
ViewData["result"] = "success";
ViewData["id"] = (int)id;
tran.Complete();
return View();
}
catch
{
ViewData["result"] = "failure";
ModelState.AddModelError("_FORM", "envalid xml format");
return View();
}
}
}
else
return View();
}XML:







注意:我们使用了事务,所以不要忘了***要提交。我就是忘了,找了3天错误   2.Show

[AcceptVerbs(HttpVerbs.Get)]
public ActionResult Show(int? ID)
{
int nId = 0;
XElement doc = null;
if (int.TryParse(Request["id"], out nId))
{
try
{
XMLFormDataContext db = new XMLFormDataContext();
var q = from f in db.XMLFORMs
where f.ID == nId
select f.FORMXML
;
if (q.Count() > 0)
{
foreach (var qq in q)
{
doc = qq;
}
ViewData["xml"] = doc;
}
else
{
ModelState.AddModelError("_FORM", "Not Exists");
}
ViewData["id"] = nId;
}
catch (Exception e)
{
ModelState.AddModelError("_FORM", e.Message);
}
}
else
{
ModelState.AddModelError("_FORM", "Miss ID");
}
return View();
}

注意这里Show.asp的写法.不能用< input .../ >直接输出控件字符串,而要

Response.Write(Html.TextBox(i.Attribute("Name").Value, "", new { @class = "InputNormal" }));否则提交后得不到form的值代码如下:

  <%using (Html.BeginForm())
{ %>
<%=Html.ValidationSummary()%>


Show XML Form




XML Form Information

<%
XElement xml=(XElement)ViewData["xml"];
StringBuilder sbScript = new StringBuilder();
sbScript.AppendLine("");
Response.Write(sbScript);
input = from p in xml.Elements()
where p.Name == "Input" && p.Attribute("Type").Value == "Button"
select p;
foreach (var b in input)
{
Response.Write("");
switch (b.Attribute("Text").Value.ToLower())
{
case "commit":
Response.Write(string.Format("", b.Attribute("Name").Value, b.Attribute("Text").Value));
break;
case "validate":
Response.Write(string.Format("", b.Attribute("Name").Value, b.Attribute("Text").Value));
break;
}
Response.Write("");
}
%>


<%} %>

XML内容的检测

我们可以利用XSD来检查。

代码如下

  #region 检查xml
[AcceptVerbs(HttpVerbs.Post), ValidateInput(false)]
public ActionResult checkXML(string xmlContent)
{
string strOut = string.Empty;
int nResult = (CheckXML(xmlContent, out strOut) == true) ? 1 : 0;
Dictionary dicResult = new Dictionary();
dicResult.Add("State", nResult.ToString());
dicResult.Add("Message", strOut);
return Json(dicResult);
}
private bool CheckXML(string xmlContent)
{
bool bResult = true;
if (!string.IsNullOrEmpty(xmlContent))
{
//利用XmlSchemaSet(XSD)检查XML
XmlSchemaSet validator = new XmlSchemaSet();
validator.Add("", XmlReader.Create(Server.MapPath(Url.Content("~/Models/xmlTest.xsd")))); //Url.Content必须,否则找不到文件
XDocument doc = null;
try
{
doc = XDocument.Parse(xmlContent);
doc.Validate(validator, (sender, e) =>
{
bResult = false;
});
}
catch
{
bResult = false;
}
}
else
bResult = false;
return bResult;
}
private bool CheckXML(string xmlContent, out string outString)
{
bool bResult = true;
string strError = string.Empty;
if (!string.IsNullOrEmpty(xmlContent))
{
//利用XmlSchemaSet(XSD)检查XML
XmlSchemaSet validator = new XmlSchemaSet();
validator.Add("", XmlReader.Create(Server.MapPath(Url.Content("~/Models/xmlTest.xsd")))); //Url.Content必须,否则找不到文件
XDocument doc = null;
try
{
doc = XDocument.Parse(xmlContent);
doc.Validate(validator, (sender, e) =>
{
strError = e.Message;
bResult = false;
});
}
catch (XmlException e)
{
strError = e.Message;
bResult = false;
}
}
else
bResult = false;
if (!bResult)
outString = strError;
else
outString = "OK";
return bResult;
}
#endregion

这里我们返回json数据,来ajax检查

        $(document).ready(function() {
$("form").submit(function() {
if (jQuery.formValidator.pageIsValid())
$.blockUI({ message: '

Please Wait...

' });
});
if ($("#xmlContent").val() != "")
$("#xmlContent").val(decodeURI($("#xmlContent").val()));
$.formValidator.initConfig();
$("#xmlContent").formValidator({ onshow: "please input xml", onfocus: "xml required", oncorrect: "OK" })
.inputValidator({ min: 1, empty: { leftempty: true, rightempty: true }, onerror: "xml required" })
.ajaxValidator({
type: "post",
url: "checkXML",
datatype: "json",
success: function(responseData) {
if (responseData.State == "1") {
return true;
}
else {
return false;
}
},
buttons: $("#submit"),
error: function() { alert("server busy,try later..."); },
onerror: "XML Format error or same content",
onwait: "XML checking,please wait..."
});
});
function CheckForm() {
result = jQuery.formValidator.pageIsValid();
if (result) {
$("#xmlContent").val(encodeURI($("#xmlContent").val()));
}
return result;
}

注意我们利用了encodeURI,decodeURI进行编码,来避免A potentially dangerous Request.QueryString value was detected from the client问题

3.***编写ShowResult

        [AcceptVerbs(HttpVerbs.Post)]
public ActionResult ShowResult()
{
StringBuilder sbResult = new StringBuilder();
foreach(string key in Request.Form.Keys)
{
sbResult.AppendLine(string.Format("{0}={1}", key, Request.Form[key]));
}
return Json(sbResult.ToString());
}

很简单的直接输出form的内容,你也可以进行你自己的处理,用ajax来避免再次刷新***结果

[[2723]]498)this.style.width=498;" height=127> [[2724]]498)this.style.width=498;" height=127>

【编辑推荐】

  1. 浅谈如何使用.NET存储XML数据
  2. Java使用XML作为持久存储介质实现方法
  3. 详解Java解析XML的四种方法
责任编辑:彭凡 来源: cnblogs
相关推荐

2010-08-13 08:47:28

xml文件Flex

2009-03-31 13:12:05

ASP.NETMVC表单验证

2009-09-14 18:44:06

MVC+jQuery

2009-02-04 08:52:55

动态页面XMLXSL

2009-06-24 09:36:52

XML实现breadcMVC

2012-08-16 15:56:33

XML

2009-08-18 16:42:49

C# 操作XML

2009-06-11 17:39:55

xmljava

2011-07-15 14:29:44

PHPXML

2010-08-06 09:38:11

Flex读取XML

2013-07-30 11:30:42

Windows PhoWindows Pho

2009-08-12 16:26:30

C#读取XML文档

2009-08-26 15:53:42

C#数据访问XML

2013-06-08 13:29:27

Android开发DOM读取XMLXML解析

2009-06-19 11:43:59

Spring MVC框

2011-04-19 10:32:27

MVCjQuery

2023-12-20 13:49:00

Linux动态库代码

2010-03-12 09:38:58

2011-05-18 14:52:04

XML

2009-12-31 11:35:20

Silverlight
点赞
收藏

51CTO技术栈公众号