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基于ASP.NET+EasyUI框架实现图片上传提交表单功能(js提交图片)

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

我的风格，先给大家展示下效果图，具体效果图如下所示，如果大家感觉还不错很满意请参考实现代码。

HTML的代码：

<form id="ff" runat="server" method="post"> 
<div id="content" style="margin-left:50px;"> 
<table style="width:300px;" id="uniform"> 
<tr> 
<td>书画名称：<input id="paintingName" class="easyui-validatebox" validType:'paintingName' type="text" name="paintingName" data-options="required:true"/></td> 
</tr> 
<tr> 
<td>书画类别：<input id="radPaint" value="国画" class="easyui-validatebox" name="type" type="radio" checked="checked" data-options="required:true" />国画 
<input id="rad" name="type" class="easyui-validatebox" type="radio" data-options="required:true" />书法</td> 
</tr> 
<tr> 
<td>书画作者：<asp:DropDownList ID="ddlist" runat="server" Width="155px"></asp:DropDownList> 
</td> 
</tr> 
<tr> 
<td>书画价格：<input id="price" class="easyui-numberbox" type="text" name="price" data-options="required:true"/>元</td> 
</tr> 
<tr> 
<td>高　　度：<input id="height" class="easyui-numberbox" type="text" name="height" data-options="required:true"/>cm</td> 
</tr> 
<tr> 
<td> 
宽　　度：<input id="width" class="easyui-numberbox" type="text" name="width" data-options="required:true"/>cm 
</td> 
</tr> 
<tr> 
<td> 
选择图片:<asp:FileUpload ID="idFile" Width="150px" runat="server" onchange="javascript:setImagePreview(this,localImag,preview);"> 
</td> 
</tr> 
<tr> 
<td> 
预　　览: 
<div id="localImag" style="width: 300px; height: 200px;"> 
<img id="preview" alt="预览图片" onclick="over(preview,divImage,imgbig);" src="../../Paint/img/default.jpg" width="300" height="200"/> 
</div> 
</td> 
</tr> 
</table> 
<input type="hidden" id="test" name="test" /> 
<div style="width:300px; text-align:center;"> 
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="submitForm()">确定</a> 
<a href="javascript:void(0)" class="easyui-linkbutton" onclick="clearForm()">取消</a> 
</div> 
<%--显示大图标的区域--%> 
<div id="divImage" style="display: none;left:365px;top:40px;position: absolute"> 
<img id="imgbig" onclick="out();" src="" alt="大图" /> 
</div> 
</div> 
</form>

JS代码：

//显示图片 
function over(imgid, obj, imgbig) { 
//大图显示的最大尺寸 4比3的大小 400 300 
maxwidth = 400; 
maxheight = 300; 
//显示 
obj.style.display = ""; 
imgbig.src = imgid.src; 
//1、宽和高都超过了，看谁超过的多，谁超的多就将谁设置为最大值，其余策略按照2、3 
//2、如果宽超过了并且高没有超，设置宽为最大值 
//3、如果宽没超过并且高超过了，设置高为最大值 
if (img.width > maxwidth && img.height > maxheight) { 
pare = (img.width - maxwidth) - (img.height - maxheight); 
if (pare >= 0) 
img.width = maxwidth; 
else 
img.height = maxheight; 
} 
else if (img.width > maxwidth && img.height <= maxheight) { 
img.width = maxwidth; 
} 
else if (img.width <= maxwidth && img.height > maxheight) { 
img.height = maxheight; 
} 
} 
//隐藏图片 
function out() { 
document.getElementById('divImage').style.display = "none"; 
} 
//保存信息 
function submitForm() { 
$.messager.confirm('提示', '你确定要添加此记录吗？', function (r) { 
if (r) { 
//先上传图片后，再提交 
upLoadFile(); 
var test = document.getElementById("test").value = "add"; 
var paintingName = document.getElementById("paintingName").value; 
var artistID = document.getElementById("ddlist").value; 
var type = $(":checkbox[name='type']").attr("checked") == true ? "书法" : "国画"; 
var price = document.getElementById("price").value; 
var height = document.getElementById("height").value; 
var width = document.getElementById("width").value; 
var idFile = document.getElementById("idFile").value; 
//先判断是否上传图片之后在提交 
$('#ff').form('submit', { 
url: "Painting.ashx?paintingName=" + paintingName + "&artistID=" + artistID + 
"&type=" + type + "&price=" + price + "&height=" + height + "&width=" + width + 
"&idFile=" + idFile + "&addID=" + addID + "&test=" + test, 
dataType: "json", 
onSubmit: function () { 
return $(this).form('validate'); 
}, 
success: function (result) { 
if (result == "T") { 
//清空文本框 
document.getElementById("paintingName").value = ""; 
document.getElementById("price").value = ""; 
document.getElementById("height").value = ""; 
document.getElementById("width").value = ""; 
document.getElementById("idFile").value = ""; 
document.getElementById("preview").value = ""; 
$.messager.alert('提示', '恭喜您，信息添加成功！', 'info'); 
} 
else { 
$.messager.alert('提示', '保存失败，请您核对！', 'info'); 
} 
} 
}); 
} 
}); 
} 
//上传图片 
function upLoadFile() { 
var idFile = document.getElementById("idFile").value; 
//判断是否选择图片 
if (idFile == null || idFile == "") { 
$.messager.alert('提示','请添加图片!'); 
document.getElementById("idFile").focus(); 
document.getElementById("idFile").select(); 
return; 
} 
var options = { 
type: "POST", 
url: 'Files.ashx', 
//success: showResponse 
}; 
// 将options传给ajaxForm 
$('#ff').ajaxSubmit(options); 
} 
//function showResponse() { 
// alert("上传成功!"); 
//} 
function clearForm(){ 
//清空文本框 
document.getElementById("paintingName").value = ""; 
document.getElementById("price").value = ""; 
document.getElementById("height").value = ""; 
document.getElementById("width").value = ""; 
document.getElementById("idFile").value = ""; 
}

后台一般处理程序的代码：

上传图片的一般处理程序：

<span style="font-size:14px;"> /// <summary> 
/// Files 的摘要说明 
/// </summary> 
public class Files : IHttpHandler 
{ 
public void ProcessRequest(HttpContext context) 
{ 
context.Response.ContentType = "text/plain"; 
//图片名 
HttpFileCollection files = context.Request.Files; 
if (files.Count > 0) 
{ 
for (int i = 0; i < files.Count; i++) 
{ 
HttpPostedFile file = files[i]; 
if (file.ContentLength > 0) 
{ 
//全路径 
string FullFullName = file.FileName; 
//获取图片的名称 
String fileName = FullFullName.Substring(FullFullName.LastIndexOf("\\") + 1); 
//保存路径D:\GoodCommunitySystem2.0 - 副本\GoodCommunitySystem\Paint\img\ 
string path = "~/Paint/img"; 
file.SaveAs(System.Web.HttpContext.Current.Server.MapPath(path) + "\\" + fileName); 
} 
} 
} 
} 
public bool IsReusable 
{ 
get 
{ 
return false; 
} 
} 
}</span>

提交表单的一般处理程序：

/// <summary> 
/// Painting 的摘要说明 
/// </summary> 
public class Painting : IHttpHandler 
{ 
paintingBLL paintingbll = new paintingBLL(); 
Entity.paintingEntity paintingEntity = new Entity.paintingEntity(); 
public void ProcessRequest(HttpContext context) 
{ 
context.Response.ContentType = "text/plain"; 
string command = context.Request["test"].ToString();//前台传的标示值 
if (command == "add") 
{ 
Add(context); 
} 
} 
/// <summary> 
/// 添加记录 
/// </summary> 
/// <param name="context"></param> 
public void Add(HttpContext context) 
{ 
paintingEntity.PaintingName = context.Request.QueryString["paintingName"]; 
paintingEntity.PaintingStyle = context.Request.QueryString["type"]; 
paintingEntity.PaintingURL = context.Request.QueryString["idFile"]; 
paintingEntity.Price = Convert.ToInt32(context.Request["price"]); 
paintingEntity.AddID = Convert.ToInt32(context.Request["addID"]); 
paintingEntity.ArtistID = Convert.ToInt32(context.Request["artistID"]); 
paintingEntity.Height = Convert.ToInt32(context.Request.QueryString["height"]); 
paintingEntity.Width = Convert.ToInt32(context.Request.QueryString["width"]); 
try 
{ 
if (paintingbll.Add(paintingEntity)) 
{ 
context.Response.Write("T"); 
} 
else 
{ 
context.Response.Write("F"); 
} 
} 
catch (Exception ex) 
{ 
throw ex; 
} 
} 
public bool IsReusable 
{ 
get 
{ 
return false; 
} 
} 
}

需要引入的js：

<%--基础样式--%> 
<link href="../../themes/default/easyui.css" rel="stylesheet" /> 
<%--图标样式--%> 
<link href="../../themes/icon.css" rel="stylesheet" /> 
<%--easyui-js--js的文件有先有后min.js必须在前，easyui.min.js必须在后--%> 
<script src="../jquery.min.js"></script> 
<%--easyui 的js--%> 
<script charset="utf-8" src="../jquery.easyui.min.js"></script> 
<%--中文js--%> 
<script src="../locale/easyui-lang-zh_CN.js"></script> 
<%--上传图片时js--%> 
<script src="js/jquery.form.js"></script>

上传图片时，需要jquery.form.js的js文件，下载地址：http://download.csdn.net/detail/jiuqiyuliang/6919517

上传图片，并提交表单就是这么简单，一些js代码+一般处理程序，相信你一看就会。后面的博客我会更新一些关于easyui-datagrid的相关博客，敬请期待。

最近有网友，总觉得看的还不是太明白，能不能将paintingBLL和paintingEntity代码贴一下-----新人求罩，我个人觉得实体层就没有必要了，下面我就将paintingBLL的源码粘一下，仅供大家参考。

using System; 
using System.Data; 
using System.Collections.Generic; 
using Common; 
using Entity; 
using DALFactory; 
using IDAL; 
namespace BLL 
{ 
/// <summary> 
/// paintingBLL 
/// </summary> 
public partial class paintingBLL 
{ 
private readonly IpaintingDAL dal=DataAccess.CreatepaintingDAL(); 
public paintingBLL() 
{} 
#region BasicMethod 
/// <summary> 
/// 得到最大ID 
/// </summary> 
public int GetMaxId() 
{ 
return dal.GetMaxId(); 
} 
/// <summary> 
/// 是否存在该记录 
/// </summary> 
public bool Exists(int PaintingID) 
{ 
return dal.Exists(PaintingID); 
} 
/// <summary> 
/// 增加一条数据 
/// </summary> 
public bool Add(Entity.paintingEntity Entity) 
{ 
return dal.Add(Entity); 
} 
/// <summary> 
/// 更新一条数据 
/// </summary> 
public bool Update(Entity.paintingEntity Entity) 
{ 
return dal.Update(Entity); 
} 
/// <summary> 
/// 删除一条数据 
/// </summary> 
public bool Delete(int PaintingID) 
{ 
return dal.Delete(PaintingID); 
} 
/// <summary> 
/// 删除一条数据 
/// </summary> 
public bool DeleteList(string PaintingIDlist ) 
{ 
return dal.DeleteList(PaintingIDlist ); 
} 
/// <summary> 
/// 得到一个对象实体 
/// </summary> 
public Entity.paintingEntity GetEntity(int PaintingID) 
{ 
return dal.GetEntity(PaintingID); 
} 
/// <summary> 
/// 得到一个对象实体，从缓存中 
/// </summary> 
public Entity.paintingEntity GetEntityByCache(int PaintingID) 
{ 
string CacheKey = "paintingEntityEntity-" + PaintingID; 
object objEntity = Common.DataCache.GetCache(CacheKey); 
if (objEntity == null) 
{ 
try 
{ 
objEntity = dal.GetEntity(PaintingID); 
if (objEntity != null) 
{ 
int EntityCache = Common.ConfigHelper.GetConfigInt("EntityCache"); 
Common.DataCache.SetCache(CacheKey, objEntity, DateTime.Now.AddMinutes(EntityCache), TimeSpan.Zero); 
} 
} 
catch{} 
} 
return (Entity.paintingEntity)objEntity; 
} 
/// <summary> 
/// 获得数据列表 
/// </summary> 
public DataSet GetList(string strWhere) 
{ 
return dal.GetList(strWhere); 
} 
/// <summary> 
/// 获得数据列表 
/// </summary> 
public DataSet GetPaintingList(string strWhere) 
{ 
return dal.GetPaintingList(strWhere); 
} 
/// <summary> 
/// 获得前几行数据 
/// </summary> 
public DataSet GetList(int Top,string strWhere,string filedOrder) 
{ 
return dal.GetList(Top,strWhere,filedOrder); 
} 
/// <summary> 
/// 获得数据列表 
/// </summary> 
public List<Entity.paintingEntity> GetEntityList(string strWhere) 
{ 
DataSet ds = dal.GetList(strWhere); 
return DataTableToList(ds.Tables[0]); 
} 
/// <summary> 
/// 获得数据列表 
/// </summary> 
public List<Entity.paintingEntity> DataTableToList(DataTable dt) 
{ 
List<Entity.paintingEntity> EntityList = new List<Entity.paintingEntity>(); 
int rowsCount = dt.Rows.Count; 
if (rowsCount > 0) 
{ 
Entity.paintingEntity Entity; 
for (int n = 0; n < rowsCount; n++) 
{ 
Entity = dal.DataRowToEntity(dt.Rows[n]); 
if (Entity != null) 
{ 
EntityList.Add(Entity); 
} 
} 
} 
return EntityList; 
} 
/// <summary> 
/// 获得数据列表 
/// </summary> 
public DataSet GetAllList() 
{ 
return GetList(""); 
} 
/// <summary> 
/// 分页获取数据列表 
/// </summary> 
public int GetRecordCount(string strWhere) 
{ 
return dal.GetRecordCount(strWhere); 
} 
/// <summary> 
/// 分页获取数据列表 
/// </summary> 
public DataSet GetListByPage(string strWhere, string orderby, int startIndex, int endIndex) 
{ 
return dal.GetListByPage( strWhere, orderby, startIndex, endIndex); 
} 
/// <summary> 
/// 分页获取数据列表 
/// </summary> 
//public DataSet GetList(int PageSize,int PageIndex,string strWhere) 
//{ 
//return dal.GetList(PageSize,PageIndex,strWhere); 
//} 
#endregion BasicMethod 
#region ExtensionMethod 
#endregion ExtensionMethod 
} 
}

以上所述是小编给大家介绍的基于ASP.NET+EasyUI框架实现图片上传提交表单功能(js提交图片)，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对极客世界网站的支持！

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