本文转自:http://leelei.blog.51cto.com/856755/1587301
好久没有写关于web开发的文章了,进到这个公司一直就是winform和Silverlight,实在是没有实战web项目的机会。大D也辞职了,去搞web app了。自己也该闲暇时间多学习学习,每天进步一点点。
OK,不多说了,看一下Solution的截图
基本上一看就明白了,控制器调用Biz层,Biz层调用DAL层,DAL层进行数据的CURD。Utility是一些公用的类库。ok,为什么程序集的命名都是以Bruce开头呢,因为我在公司的英文名叫这个。废话不多说,我们先看一下页面
我们引入了BootStrap,主要是为了页面布局。在Views中Partial下面放的都是部分页。
我们先看一下运行效果,今天主要是讲页面初始化部分。
其实查询条件就是婚否,出生日期,姓名的模糊查询。我们先看一下页面Index.cshtml的代码
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<!DOCTYPE html> < html > < head > < meta charset = "utf-8" /> < meta http-equiv = "X-UA-Compatible" content = "IE=edge" /> < meta name = "viewport" content = "width=device-width;initial-scale=1" /> < title >Compare data between Solr and DB</ title > < link rel = "stylesheet" type = "text/css" href = "~/BootStrap/css/bootstrap-theme.css" /> < link rel = "stylesheet" type = "text/css" href = "~/BootStrap/css/bootstrap.css" /> @*@Styles.Render("~/css")*@ @Scripts.Render("~/bundles/BootStrap") @Scripts.Render("~/bundles/Scripts") < style type = "text/css" > .pre-Scrollable { max-height: 700px; overflow-y: scroll; } </ style > </ head > < body > < div class = "container" > < form id = "formsync" > < div class = "row" > < div class = "col-md-12" > < h1 style = "color:red" >< b >Compare Data Between Solr and DB</ b ></ h1 > </ div > </ div > < div class = "row" id = "divloding" style = "display:none;text-align:center" > < div class = "col-md-6" > < img src = "~/Images/ajaxLoading.gif" alt = "load failed" /> < label >getting,please wait......</ label > </ div > </ div > < div class = "row" id = "divcompare" style = "display:none;text-align:center" > < div class = "col-md-6" > < img src = "~/Images/ajaxLoading.gif" alt = "load failed" /> < label >comparing,please wait......</ label > </ div > </ div > < div class = "row" id = "divfix" style = "display:none;text-align:center" > < div class = "col-md-6" > < img src = "~/Images/ajaxLoading.gif" alt = "load failed" /> < label >fixing,please wait......</ label > </ div > </ div > < div class = "row" style = "margin-top:10px" > < div class = "col-md-12 form-inline" > < div class = "form-group input-group" > < span class = "input-group-addon" >IsMarried:</ span > @Html.DropDownList("ddlMarried", ViewBag.MarriedList as SelectList, null, new { id = "ddlMarried", @class = "form-control" }) </ div > < div class = "form-group" style = "margin-left:10px" > < label class = "control-label" >BirthDay:</ label > < input type = "date" id = "txtdatestart" class = "form-control" > < label class = "control-label" >-</ label > < input type = "date" id = "txtdateend" class = "form-control" > </ div > < div class = "form-group input-group" style = "margin-left:10px" > < span class = "input-group-addon" >Name:</ span > < input id = "txtusername" type = "text" class = "form-control" placeholder = "input name..." style = "120px" /> </ div > < div class = "form-group" style = "margin-left:10px" > < input id = "btnsearch" type = "button" class = "btn btn-info" value = "Get" style = "70px" /> </ div > </ div > </ div > < div class = "row" style = "margin-top:10px" > < div id = "divresult" class = "col-md-7 form-inline pre-Scrollable" > @{Html.RenderPartial("~/Views/Partial/UserInfoPartial.cshtml");} </ div > < div class = "col-md-5" > @{Html.RenderPartial("~/Views/Partial/DiffAndSameWithSolrPartial.cshtml");} </ div > </ div > </ form > </ div > </ body > </ html > |
我们使用html5+BootStrap布局,这里用到了BootStrap的网格系统,将浏览器平分为12份,即12列,很容易构造出响应式布局系统。那么什么是BootStrap的网格系统,看如下的解释
OK,我们怎么看是否是响应式的布局呢,我们打开谷歌浏览器,现将浏览器缩小到一定程度。
看到了吧,即使设备浏览器这么小,我们还是能用。那我们在手机模拟器中测试一下,打开谷歌浏览器,按F12,点击手机模拟器样的东西,然后Device选择iphone6。
我们看到iphone6下面的效果是这样的。说到这里我最近很讨厌两个广告,一个是“这个是iphone6,这个是iphone6 plus,它们都有一个叫健康的东西.....但是好吃啊”,还有一个是“当牛魔王变成一个饺子,我愿意变成一双筷子”。看到这两个广告,我想砸电视。
那为什么不同的设备不同的浏览器都是可以正常浏览的呢,原因就在于这段代码
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< meta name = "viewport" content = "width=device-width;initial-scale=1" /> |
这段代码的意思是网页宽度默认等于屏幕宽度,缩放比例默认为1(网页初始比例占屏幕的100%)。
ok,我们接下来看head部分css和js的引用,这里有个新东西叫Bundle,用来打包压缩js或者css的。通过它打包压缩的js或者css客户端只需要下载一次包即可,而且可以在客户端缓存起来,当检测到有更新时,才会重新下载。
下面是Bundle.cs的代码
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using System.Web; using System.Web.Optimization; namespace Brue.GRLC.Web { public class BundleConfig { // 有关 Bundling 的详细信息,请访问 http://go.microsoft.com/fwlink/?LinkId=254725 public static void RegisterBundles(BundleCollection bundles) { bundles.Add( new ScriptBundle( "~/bundles/BootStrap" ).Include( "~/Scripts/jquery-1.11.1.js" , "~/BootStrap/js/bootstrap.js" )); bundles.Add( new ScriptBundle( "~/bundles/Scripts" ).Include( "~/Js/Index.js" )); bundles.Add( new StyleBundle( "~/css" ).Include( "~/BootStrap/css/bootstrap-theme.css" , "~/BootStrap/css/bootstrap.css" )); } } } |
注意,在这里引用js的时候不要引用压缩过的js,比如xxx.min.js。当Bundle在遇到这种js命名文件的时候,直接就忽略掉了。那么我们在Head中只需要使用如下代码来引用即可。
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@Scripts.Render( "~/bundles/BootStrap" ) @Scripts.Render( "~/bundles/Scripts" ) |
OK,在这我碰到一个问题,就是我的css通过这种方式引用,始终提示Index out of range。如果哪位大牛知道原因的话麻烦留个言,谢谢!
OK,我们接下来看一下控制器代码,页面刚进来,会走Home/Index。
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public ActionResult Index() { List< object > marriedList = GRLCBiz.GetInstance().GetMarriedList(); SelectList selectList = new SelectList(marriedList, "MarriedID" , "DisplayContent" , "-1" ); ViewBag.MarriedList = selectList; DataResponse<UserDBEntity> dataResponse = GRLCBiz.GetInstance().GetUserInfoEntityList(); UserInfoViewModel userInfoViewModel = new UserInfoViewModel(); userInfoViewModel.DataResponse = dataResponse; userInfoViewModel.DataResponse.PageIndex = ConstValues.CONN_DefaultPageIndex; userInfoViewModel.DataResponse.PageSize = ConstValues.CONN_DefaultPageSize; userInfoViewModel.DataResponse.StartPageIndex = 1; return View(userInfoViewModel); } |
首先我们构造了一个SelectList用于下拉列表,Biz层的代码很简单
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public dynamic GetMarriedList() { IList< object > marriedList = new List< object >(); marriedList.Add( new { MarriedID = -1, DisplayContent = "No Selection" }); marriedList.Add( new { MarriedID = 0, DisplayContent = "Married" }); marriedList.Add( new { MarriedID = 1, DisplayContent = "UnMarried" }); return marriedList; } |
用匿名类去构造一个List。接下来就是DataReponse的获取,Biz层的代码如下
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public DataResponse<UserDBEntity> GetUserInfoEntityList(UserInfoRequest request = null ) { if (request== null ) { request = new UserInfoRequest(); request.PageIndex = ConstValues.CONN_DefaultPageIndex; request.PageSize = ConstValues.CONN_DefaultPageSize; } int totalCount=0; List<UserDBEntity> userDBEntityList = GRLCDAL.GetInstance().GetUserInfoEntityList(request, out totalCount); DataResponse<UserDBEntity> dataResponse = new DataResponse<UserDBEntity>(); dataResponse.DataList = userDBEntityList; dataResponse.TotalCount = totalCount; return dataResponse; } |
没什么可说的,ConstValues类中是一些静态只读属性
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public class ConstValues { public static readonly string CON_DBConnection = ConfigurationManager.ConnectionStrings[ "DB_ConnectionStr" ].ToString(); public static readonly string CON_DbScriptXmlFolder = ConfigurationManager.AppSettings[ "DbScriptXmlFolder" ]; public static readonly int CONN_DefaultPageSize = int .Parse(ConfigurationManager.AppSettings[ "DefaultPageSize" ]); public static readonly int CONN_DefaultPageIndex = 1; public static readonly int CONN_PagerDisplayCount = int .Parse(ConfigurationManager.AppSettings[ "PagerDisplayCount" ]); } |
看一下DAL层。
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public List<UserDBEntity> GetUserInfoEntityList(UserInfoRequest request, out int totalCount) { totalCount = 0; string sqlScript = string .Empty; try { sqlScript = DBScriptManager.GetScript( this .GetType(), "GetUserInfo" ); SqlParameter[] sqlParameters = { new SqlParameter( "@IsMarried" ,SqlDbType.Char,1), new SqlParameter( "@StartDate" ,SqlDbType.DateTime), new SqlParameter( "@EndDate" ,SqlDbType.DateTime), new SqlParameter( "@UserName" ,SqlDbType.NVarChar,20), new SqlParameter( "@PageIndex" ,SqlDbType.Int), new SqlParameter( "@PageSize" ,SqlDbType.Int), new SqlParameter( "@TotalCount" ,SqlDbType.Int) }; sqlParameters[0].Value = request.IsMarried; sqlParameters[1].Value = request.StartDate; sqlParameters[2].Value = request.EndDate; sqlParameters[3].Value = request.UserName; sqlParameters[4].Value = request.PageIndex; sqlParameters[5].Value = request.PageSize; sqlParameters[6].Direction = ParameterDirection.Output; DataSet ds = SqlHelper.ExecuteDataset(ConstValues.CON_DBConnection, CommandType.Text, sqlScript, sqlParameters); if (ds != null && ds.Tables.Count > 0) { totalCount = Convert.ToInt32(sqlParameters[6].Value); return ds.Tables[0].ToEntityList<UserDBEntity>(); } return new List<UserDBEntity>(); } catch (Exception ex) { LogHelper.WriteExceptionLog(MethodBase.GetCurrentMethod(), ex); return null ; } } |
OK,我们看一下这个GetUserInfo脚本,在Bruce.GRLC.DbScriptXml程序集下。
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<? xml version = "1.0" encoding = "utf-8" ?> < Scripts > < Script Key = "GetUserInfo" > <![CDATA[ DECLARE @UserTempTable TABLE ( ID INT IDENTITY(1,1) NOT NULL, UserNo CHAR(25) NOT NULL ) INSERT INTO @UserTempTable ( UserNo ) SELECT A.UseNo FROM Bonus.dbo.[User] A WITH(NOLOCK) LEFT JOIN Bonus.dbo.UerInfo B WITH(NOLOCK) ON A.UseNo = B.UseNo WHERE (@IsMarried IS NULL OR @IsMarried = '' OR B.Temper = @IsMarried) AND ( @StartDate IS NULL OR @EndDate IS NULL OR B.BirthDay BETWEEN @StartDate AND @EndDate ) AND ( @UserName IS NULL OR @UserName = '' OR B.Name LIKE '%' + @UserName + '%' ) ORDER BY A.UseNo ASC SELECT @TotalCount = COUNT(1) FROM @UserTempTable SELECT UseNo, Name, Age, Married FROM( SELECT ID = ROW_NUMBER() OVER(ORDER BY UseNo ASC), A.UseNo, B.Name, B.Age, Married = CASE WHEN B.Temper = '1' THEN '已婚' ELSE '未婚' END FROM Bonus.dbo.[User] A WITH(NOLOCK) LEFT JOIN Bonus.dbo.UerInfo B WITH(NOLOCK) ON A.UseNo = B.UseNo INNER JOIN @UserTempTable C ON C.UserNo = A.UseNo ) N WHERE ID BETWEEN (@PageIndex - 1)* @PageSize + 1 AND @PageIndex * @PageSize ]]> </ Script > </ Scripts > |
脚本很简单,就是传入参数查分页数据。
在DAL层我们将DataTable通过ToEntityList转化为了实体List,在Utility中我们定义了一个扩展用来转化。
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public static class DataTableToEntityExtension { public static List<T> ToEntityList<T>( this DataTable dt) where T : class , new () { List<T> entityList = new List<T>(); Type entityType = typeof (T); PropertyInfo[] propertys = entityType.GetProperties(); DataMappingAttribute mappingAttribute = null ; foreach (DataRow dr in dt.Rows) { T tEntity = new T(); foreach (PropertyInfo pi in propertys) { mappingAttribute = pi.GetCustomAttribute( typeof (DataMappingAttribute)) as DataMappingAttribute; if (mappingAttribute != null && dt.Columns.Contains(mappingAttribute.mappingName)) { if (!pi.CanWrite) continue ; object value = dr[mappingAttribute.mappingName]; if (value != DBNull.Value) pi.SetValue(tEntity, value, null ); } } entityList.Add(tEntity); } return entityList; } } |
值那么转化的时候是怎么让DataTable的列和实体匹配起来,你可以将列别名和实体定义成一样的,还有一种你可以使用Attribute。那我们使用后者,因为后者更灵活。
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[AttributeUsage(AttributeTargets.Property)] public class DataMappingAttribute : Attribute { public string mappingName; public DbType dbType; public DataMappingAttribute() { } public DataMappingAttribute( string mappingName, DbType dbType) { this .mappingName = mappingName; this .dbType = dbType; } } |
定义好Attribute之后,我们设置其能使用的目标只能是Property。然后我们在实体类里面的属性上加上这个Attribute。
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namespace Bruce.GRLC.Model.Entity { public class UserDBEntity { [DataMapping( "UseNo" , DbType.AnsiString)] public string UserID { get ; set ; } [DataMapping( "Name" , DbType.AnsiString)] public string UserName { get ; set ; } [DataMapping( "Age" , DbType.Int32)] public int Age { get ; set ; } [DataMapping( "Married" , DbType.String)] public string Married { get ; set ; } } } |
在DataTableToEntityExtension这个扩展中我们得到属性的Attribute去和DataTable的列名去匹配,反射赋值。
OK,拿到数据后,我们在控制器构造viewModel,传递给界面来绑定。我们看一下部分页UserInfoPartial.cshtml的代码
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@using Bruce.GRLC.Model.ViewModel; @model UserInfoViewModel < table id = "tabuserinfo" class = "table table-bordered table-hover" > < thead > < tr style = "#2aabd2;color:white" > < th >帐号</ th > < th >姓名</ th > < th >年龄</ th > < th >婚否</ th > </ tr > </ thead > < tbody > @if (Model != null && Model.DataResponse != null && Model.DataResponse.DataList != null) { foreach (var userEntity in Model.DataResponse.DataList) { < tr > < td > @userEntity.UserID </ td > < td > @userEntity.UserName </ td > < td > @userEntity.Age </ td > < td > @userEntity.Married </ td > </ tr > } } </ tbody > </ table > < div id = "divpagination" > @{Html.RenderPartial("~/Views/Partial/PaginationPartial.cshtml", Model.DataResponse);} </ div > |
其实也就是一个应用了BoootStrap样式的表格,有边框和鼠标经过的样式。关于BootStrap的样式的使用,请参考BootStrap官网。代码很简单,就是循环遍历,展示数据。
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