jQuery发展趋势一片大好,这里向大家介绍一种管理jQuery插件的方案。可能有些人已经在系统中已经使用.

使用原因：在开发过程中，jQuery插件的使用越来越多，且jQuery的某些插件是基于某些插件来使用了,且有先后顺序的问题.

最初的做法:直接在页面上加载js.如下代码,其中使用了一些插件，其依赖于jQuery.

其中用了一个jdMenu插件，其依赖于四个文件(jdMenu.css,jquery.js,bgiframe.min.js，positionBy.js)

<linkhref="/App_Scripts/jPlugin/jdMenu/jquery.jdMenu.css"rel="stylesheet"type="text/css"/><scriptsrc="/App_Scripts/jquery.js"type="text/javascript"></script><scriptsrc="/App_Scripts/jPlugin/jquery-bgiframe/jquery.bgiframe.min.js"type="text/javascript"></script><scriptsrc="/App_Scripts/jPlugin/jdMenu/jquery.positionBy.js"type="text/javascript"></script><scriptsrc="/App_Scripts/jPlugin/jdMenu/jquery.jdMenu.js"type="text/javascript"></script><scriptsrc="/App_Scripts/jPlugin/jquery-hint/hint.jquery.js"type="text/javascript"></script><scriptsrc="/App_Scripts/jPlugin/utilities/customExt.js"type="text/javascript"></script><scriptsrc="/App_Scripts/jPlugin/cookie/cookie.pack.js"type="text/javascript"></script><title>

上面用到的插件还不算多,在某些页面，我们曾经同时用到很多插件，如jQuery的Tab,autoComplete,validate及相关其他插件，这样插件相关的文件就很多很多了，随着开发的进行,越难越管理，而且jQuery也在不断的升级，不同的插件还会出现版本的问题.随着这些问题的出现,急需一个配置文件来配置管理.

一.定义jQuery资源配置文件

以下为我定义的基本格式

<?xml version="1.0" encoding="utf-8"?><Resources><Common><Plugins><PluginName="cookie"Src="~/App_Scripts/jPlugin/cookie/cookie.pack.js"><Styles></Styles><Scripts><ScriptKey="jquery"Src="~/App_Scripts/jquery.js"/></Scripts></Plugin><PluginName="treeview"Src="~/App_Scripts/jPlugin/jquery-treeview/jquery.treeview.pack.js"><Styles><StyleKey="jquery_treeview_css"Href="~/App_Scripts/jPlugin/jquery-treeview/jquery.treeview.css"/></Styles><Scripts><ScriptKey="jquery"Src="~/App_Scripts/jquery.js"/></Scripts></Plugin><PluginName="autocomplete"Src="~/App_Scripts/jPlugin/jquery-autocomplete/jquery.autocomplete-bundle.pack.js"><Styles><StyleKey="autocomplete_css"Href="~/App_Scripts/jPlugin/jquery-autocomplete/jquery.autocomplete.css"/></Styles><Scripts><ScriptKey="jquery"Src="~/App_Scripts/jquery.js"/><ScriptKey="bgiframe"Src="~/App_Scripts/jPlugin/jquery-bgiframe/jquery.bgiframe.min.js"/></Scripts></Plugin></Plugins></Common><Required><Scripts><ScriptName="jdMenu"></Script><ScriptName="hint"></Script><ScriptName="jQueryCustomExt"></Script><ScriptName="cookie"></Script></Scripts></Required><Pages><PageSrc="~/Administration/EmployeeMgmt.aspx"><Scripts><ScriptName="jTemplates"></Script><ScriptName="treeview"></Script><ScriptName="scrollTo"></Script><ScriptName="validate"></Script><ScriptName="jQueryCustomExt"></Script><ScriptName="autocomplete"></Script><ScriptName="blockUI"></Script></Scripts></Page><PageSrc="~/ScheduleMgmt/Reschedule.aspx"><Scripts><ScriptName="My97DatePicker"></Script><ScriptName="jQueryCustomExt"></Script><ScriptName="draggable_1.0"></Script><ScriptName="jTemplates"></Script><ScriptName="tab_1.0"></Script><ScriptName="autocomplete"></Script><ScriptName="spinBtn"></Script><ScriptName="hotkeys"></Script><ScriptName="datepicker"></Script><ScriptName="clockpick"></Script><ScriptName="validate"></Script><ScriptName="blockUI"></Script><ScriptName="tooltip"></Script><ScriptName="contextmenu"></Script><ScriptName="hint"></Script><ScriptName="jqueryMultiSelect"></Script><ScriptName="timePicker"></Script></Scripts></Page></Pages></Resources>

1.Plugins节点表示每个不同的jQuery插件,Styles和Scripts节点是css文件和js文件集合，即这个jQuery插件的依赖文件.每个文件都有一个key，为了保证文件不重复加载.

2.再看Required节点,Required其实全局js加载,如每张页面都需要菜单，则需要jdMenu插件.这个可以根据需求来调整.

3.Pages节点.

这个节点集合是配置每个具体页面需要用到的插件.

以上三点为基本点，当然每个系统还有其他要注意的，比如有些页面的功能需要有权限的人才能使用，那如果没有权限的人员进入，则与此功能相关的插件则无需加载.具体可以根据需求不同进行扩展.

二.解析资源文件

以上文件可以利用asp.net 2.0的文件依赖缓存在服务器端缓存起来，然后进行解析.我这里代码可能写的比较乱，并不完善.给大家一个参考吧.

usingSystem;
usingSystem.Collections.Generic;
usingSystem.Linq;
usingSystem.Text;
usingSystem.Web.UI;
usingSystem.Xml;
usingSystem.Web;
usingSystem.Web.Caching;

namespaceLuna.Common
{
publicclassSiteConfig
{
publicstaticXmlDocument GetResourceXml()
{
            XmlDocument doc=newXmlDocument();
            ContentCache contentCache=ContentCache.Instantiate();



if(contentCache["ResourceMulit"]!=null)
{
                doc=(XmlDocument)contentCache["ResourceMulit"];
            }else{
stringfile=HttpContext.Current.Server.MapPath("/App_Data/ResourceMulit.xml");
                doc.Load(file);
                CacheDependency dep=newCacheDependency(file, DateTime.Now);
                contentCache.Insert("ResourceMulit", doc, dep);
            }returndoc;
        }
publicstaticvoidRegsiterResource()
{
            XmlDocument doc=SiteConfig.GetResourceXml();

            XmlNode firstNode=doc.DocumentElement.FirstChild;
            XmlNodeList RequiredScripts=firstNode.FirstChild.ChildNodes;
            XmlNodeList RequiredStyles=firstNode.ChildNodes[1].ChildNodes;

            Page currentPage=(Page)HttpContext.Current.Handler;
            RegisterResource(RequiredScripts, RequiredStyles);

            XmlNode secondNode=doc.DocumentElement.ChildNodes[1];
foreach(XmlNode iteminsecondNode.ChildNodes)
{
                
stringpageSrc=item.Attributes["Src"].Value.ToLower();
if(currentPage.ResolveUrl(pageSrc)==HttpContext.Current.Request.Path.ToLower())
{
                    RegisterResource(item.FirstChild.ChildNodes, item.ChildNodes[1].ChildNodes);
                }            }        }

publicstaticvoidRegsiterResourceKey(XmlNode node, List<string>resourceNode, List<string>removeNode)
{
if(node!=null)
{
                XmlNode scriptsNodes=node.SelectSingleNode("descendant::Scripts");

foreach(XmlNode scriptNodeinscriptsNodes.ChildNodes)
{
if(scriptNode.Attributes["Removed"]==null)
{
                        resourceNode.Add(scriptNode.Attributes["Name"].Value);
                    }else{
                        removeNode.Add(scriptNode.Attributes["Name"].Value);
                    }
                }            }        }
publicstaticvoidRegsiterCommon()
{
            XmlDocument doc=SiteConfig.GetResourceXml();


//XmlNodeList RequiredStyles = firstNode.ChildNodes[1].ChildNodes;List<Plugin>PluginList=RegsiterCommonResource(doc);

//RegisterResource(RequiredScripts, RequiredStyles);
//Pages
            XmlNode currentPageNode=GetCurrentPageNode(doc);
            XmlNode RequireNode=GetRequireNode(doc);
            Dictionary<string,string>scriptList=newDictionary<string,string>();
            Dictionary<string,string>styleList=newDictionary<string,string>();

            List<string>removeNode=newList<string>();
            List<string>resourceNode=newList<string>();
if(currentPageNode!=null)
{
                XmlAttribute isAuthenticated=currentPageNode.Attributes["IsAuthenticated"];
if(isAuthenticated!=null)
{

if(Convert.ToBoolean(isAuthenticated.Value)&&HttpContext.Current.Request.IsAuthenticated)
{
                        RegsiterResourceKey(currentPageNode, resourceNode, removeNode);
                    }                }else{
                    RegsiterResourceKey(currentPageNode, resourceNode, removeNode);
                }            }           

            RegsiterResourceKey(RequireNode, resourceNode, removeNode);

           List<string>filterResourceNode=resourceNode.FindAll(delegate(stringnode)
{
foreach(var iteminremoveNode)
{
returnnode!=item;
                }returntrue;
            });
foreach(var iteminfilterResourceNode)
{
                Plugin plugin=GetCurrentPlugin(item, PluginList);

                RegisterPlugin(scriptList, styleList, plugin);
            }        }
publicstaticvoidRegisterPlugin(Dictionary<string,string>scriptList, Dictionary<string,string>styleList, Plugin plugin)
{
            Page currentPage=(Page)HttpContext.Current.Handler;
foreach(Style styleinplugin.Styles)
{
if(!styleList.ContainsKey(style.Key))
{
                    styleList.Add(style.Key, style.Href);
                    currentPage.AddCss(style.Href);
                }            }foreach(Script scriptinplugin.Scripts)
{
if(!scriptList.ContainsKey(script.Key))
{
                    scriptList.Add(script.Key, script.Src);
                    currentPage.AddScript(script.Src);
                }            }if(!scriptList.ContainsKey(plugin.Name))
{
                scriptList.Add(plugin.Name, plugin.Src);
                currentPage.AddScript(plugin.Src);
            }        }
publicstaticPlugin GetCurrentPlugin(stringscriptNode, List<Plugin>PluginList)
{

foreach(Plugin plugininPluginList)
{
if(scriptNode==plugin.Name)
{
returnplugin;
                }            }returnPluginList[0];
        }
privatestaticXmlNode GetRequireNode(XmlDocument doc)
{
            XmlNode node=doc.DocumentElement.SelectSingleNode("descendant::Required");
returnnode;
        }
publicstaticXmlNode GetCurrentPageNode(XmlDocument doc)
{

            Page currentPage=(Page)HttpContext.Current.Handler;
            XmlNode node=doc.DocumentElement.SelectSingleNode("descendant::Pages");
foreach(XmlNode iteminnode.ChildNodes)
{

stringpageSrc=item.Attributes["Src"].Value.ToLower();
if(currentPage.ResolveUrl(pageSrc)==HttpContext.Current.Request.Path.ToLower())
{
returnitem;
                }            }returnnull;
        }
publicstaticList<Plugin>RegsiterCommonResource(XmlDocument doc)
{
            XmlNode firstNode=doc.DocumentElement.SelectSingleNode("descendant::Common");
            XmlNodeList PluginNodeList=firstNode.SelectSingleNode("descendant::Plugins").ChildNodes;

            Page currentPage=(Page)HttpContext.Current.Handler;
            List<Plugin>plugins=newList<Plugin>();
foreach(XmlNode iteminPluginNodeList)
{
                Plugin plugin=newPlugin();
                plugin.Name=item.Attributes["Name"].Value;
                plugin.Src=currentPage.ResolveUrl(item.Attributes["Src"].Value);
                
                XmlNodeList scripts=item.SelectSingleNode("descendant::Scripts").ChildNodes;
foreach(XmlNode scriptinscripts)
{
stringkey=script.Attributes["Key"].Value;
stringsrc=currentPage.ResolveUrl(script.Attributes["Src"].Value);
boolremoved=false;
if(script.Attributes["Removed"]!=null)
{
                        removed=Convert.ToBoolean(script.Attributes["Removed"].Value);
                    }                    plugin.Scripts.Add(newScript(key, src,false));
                }                XmlNode styles=item.SelectSingleNode("descendant::Styles");
                
if(styles!=null)
{
foreach(XmlNode styleinstyles.ChildNodes)
{
                        plugin.Styles.Add(newStyle(style.Attributes["Key"].Value,currentPage.ResolveUrl(style.Attributes["Href"].Value)));
                    }                }                plugins.Add(plugin);
            }returnplugins;
        }
privatestaticvoidRegisterScript(stringaa)
{
//foreach (XmlNode item in scriptsNode)
//{
//string key = item.Attributes["Name"].Value;

//RegisterScript(key);
//}}
privatestaticvoidRegisterResource(XmlNodeList scripts, XmlNodeList styles)
{
            Page currentPage=(Page)HttpContext.Current.Handler;
foreach(XmlNode iteminstyles)
{
stringhref=currentPage.ResolveUrl(item.Attributes["Href"].Value);
                LiteralControl control=newLiteralControl(string.Format("\n<link href=\"{0}\"rel=\"stylesheet\"type=\"text/css\"/>", href));
                currentPage.Header.Controls.Add(control);
            }foreach(XmlNode iteminscripts)
{
stringkey=item.Attributes["Key"].Value;
stringsrc=currentPage.ResolveUrl(item.Attributes["Src"].Value);
                currentPage.AddScript(src);
//currentPage.ClientScript.RegisterClientScriptInclude(currentPage.GetType(), key, src);}
        }    }}

三.定义一个基类Page，与实际页面进行匹配

protectedoverridevoidOnLoad(EventArgs e)
        {
            SiteConfig.RegsiterCommon();
        }

好了，基本思路就是如此.大家有更好方案可以拿出来讨论下哈.