.net 从存储和本地读取图片，并可放大图片

关键功能代码

 1  /// <summary>
 2     /// 获取病例图片
 3     /// </summary>
 4     /// <param name="class_sign"></param>
 5     /// <returns></returns>
 6     public string BindContentData(string class_sign)
 7     {
 8         StringBuilder sbWishing;
 9         StringBuilder sbAllWishing = new StringBuilder();
10         if (this.tb_patientID.Text.Trim().ToString().Length > 0 && this.tb_visitID.Text.Trim().ToString().Length > 0)
11         {
12             DataSet ds = DBSQLHelpers.Query("select * from v_mr_doc_index where patient_id='" + this.tb_patientID.Text.Trim() + "' and visit_id='" + this.tb_visitID.Text.Trim() + "' and class_sign in (" + class_sign + ")  order by class_sign,cast(substring(Doc_No,charindex('_',Doc_No)+1,len(Doc_No)-charindex('_',Doc_No)) as int) asc");
13             if (ds == null || ds.Tables.Count <= 0 || ds.Tables["ds"].Rows.Count <= 0)
14             {
15                 //以下注意顺序问题，设置在return 之前
16                 return "无相关内容,请选择相应病历列表项目查询！";
17             }
18             else
19             {
20                 foreach (DataRow row in ds.Tables["ds"].Rows)
21                 {
22                     //<img src="images/1.jpg" layer-pname="HTML5资源教程 - 1">
23 
24                     sbWishing = new StringBuilder();
25                     DateTime dt_NetStoreValue = DateTime.ParseExact(ConfigurationManager.AppSettings["ImageUrlKey"], "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture); //20190515
26                     DateTime dt_DataValue = DateTime.ParseExact(@row["DOC_PATH"].ToString().Substring(1, 8), "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture);//20191205
27                     
28                     if (dt_DataValue <= dt_NetStoreValue)//若病例日期＜存储上的最后日期，从存储上取
29                     {
30                         picPath = row["DOC_PATH"].ToString();
31                         sbWishing.Append("<a  style=\"display:block;float:left;width:300px;height:300px;\"    href=\"../ShowOutSiteImage.ashx?file=" + picPath + "\" class=\"highslide\" " +
32                                  " onclick=\"return hs.expand(this, { captionId: 'caption1' } )\"><span><img   src=\"../ShowOutSiteSmallImage.ashx?file=" + picPath + "\" style=\"width:300px;height:300px;\"  ></span>-</a>");
33 
34                     }
35                     else//从本地取
36                     {
37                         picPath = ConfigurationManager.AppSettings["Store"] + row["DOC_PATH"].ToString().Replace("\\", "/");
38                         sbWishing.Append("<a  style=\"display:block;float:left;width:300px;height:300px;\"    href=\"../" + picPath + "\" class=\"highslide\" " +
39                             " onclick=\"return hs.expand(this, { captionId: 'caption1' } )\"><span><img   src=\"../" + picPath + "\" style=\"width:300px;height:300px;\"  ></span>-</a>");
40                     }
41                     //追加到输出字符串中
42                     sbAllWishing.Append(sbWishing.ToString());
43                     // sbAllWishing.Append(picPath);
44                 }
45             }
46         }
47         else
48         {
49             return "无相关内容";
50         }
51         return sbAllWishing.ToString();
52     }

 WebConfig文件

<appSettings>
    <add key="StorePath" value="D:\Mr_Pic\"/>
    <add key="Store" value="MrDocs"/>
    <add key="ImageUrlKey" value="20190515"/>
    <add key="ImageUrlValue" value="ShowOutSiteImage.ashx?file=\\192.168.10.12\\Multimedia\\EmrDocBackup"/>
  </appSettings>

 

ShowOutSiteImage.ashx   点击看大图

 

<%@ WebHandler Language="C#" Class="ShowOutSiteImage" %>

using System;
using System.Web;
using System.IO;
using System.Configuration;

public class ShowOutSiteImage : IHttpHandler {

    public void ProcessRequest(HttpContext context)
    {
        string path = context.Request.QueryString["file"];


        if (File.Exists(path))
        {
            System.IO.FileStream fs = new System.IO.FileStream(path, System.IO.FileMode.Open, System.IO.FileAccess.Read);
            System.IO.BinaryReader br = new System.IO.BinaryReader(fs);
            Byte[] bytes = br.ReadBytes((Int32)fs.Length);
            br.Close();
            fs.Close();
            context.Response.OutputStream.Write(bytes, 0, bytes.Length);
            return;
        }


        
        string storePath = HttpContext.Current.Request.PhysicalApplicationPath;
        storePath = storePath.Substring(0,storePath.Length-1);
        
        //context.Response.Write(storePath+"<br/>");
        
        string remoteDir = ConfigurationManager.AppSettings["FTP.RemoteDir"];
        string[] dirs=remoteDir.Split('\\');        
        
        FtpClient ftpClient = new FtpClient(
                ConfigurationManager.AppSettings["FTP.HostName"]
                , dirs[0]
                , ConfigurationManager.AppSettings["FTP.UserName"]
                , ConfigurationManager.AppSettings["FTP.Password"]
                , 21);
        for(int i=1;i<dirs.Length;i++)
        {
            if(dirs[i].Length>0)
            {
                ftpClient.ChDir(dirs[i]);
            }
        }
        string[] paths = path.Split('\\');
        for(int i=0;i<paths.Length-1;i++)
        {
            if(paths[i].Length>0)
            {
                //context.Response.Write(paths[i]+"<br/>");
                ftpClient.ChDir(paths[i]);
            }
        }
        string fileName=Guid.NewGuid().ToString("N");
        //context.Response.Write(path+"<br/>");
        ftpClient.Get(paths[paths.Length-1],storePath,fileName);   
        ftpClient.DisConnect();        
        string file = storePath + "\\" + fileName;
        //context.Response.Write(file);
        if(File.Exists(file))
        {
            byte[] buffer = File.ReadAllBytes(file);       
            context.Response.OutputStream.Write(buffer, 0, buffer.Length);
            File.Delete(file);
        }
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}
View Code

 

ShowOutSiteSmallImage.ashx     小图展示

<%@ WebHandler Language="C#" Class="ShowOutSiteSmallImage" %>

using System;
using System.Web;
using System.IO;
using System.Configuration;
using System.Drawing;

public class ShowOutSiteSmallImage : IHttpHandler {

    public void ProcessRequest(HttpContext context)
    {
        string path = context.Request.QueryString["file"];

        //
        if (File.Exists(path))
        {
            System.IO.FileStream fs = new System.IO.FileStream(path, System.IO.FileMode.Open, System.IO.FileAccess.Read);
            System.IO.BinaryReader br = new System.IO.BinaryReader(fs);
            Byte[] bytes = br.ReadBytes((Int32)fs.Length);
            br.Close();
            fs.Close();
            context.Response.OutputStream.Write(bytes, 0, bytes.Length);
            return;
        }

        
        string storePath = HttpContext.Current.Request.PhysicalApplicationPath;
        storePath = storePath.Substring(0,storePath.Length-1);
        
        //context.Response.Write(storePath+"<br/>");
        
        string remoteDir = ConfigurationManager.AppSettings["FTP.RemoteDir"];
        string[] dirs=remoteDir.Split('\\');        
        
        FtpClient ftpClient = new FtpClient(
                ConfigurationManager.AppSettings["FTP.HostName"]
                , dirs[0]
                , ConfigurationManager.AppSettings["FTP.UserName"]
                , ConfigurationManager.AppSettings["FTP.Password"]
                , 21);
        for(int i=1;i<dirs.Length;i++)
        {
            if(dirs[i].Length>0)
            {
                ftpClient.ChDir(dirs[i]);
            }
        }
        string[] paths = path.Split('\\');
        for(int i=0;i<paths.Length-1;i++)
        {
            if(paths[i].Length>0)
            {
                //context.Response.Write(paths[i]+"<br/>");
                ftpClient.ChDir(paths[i]);
            }
        }
        string fileName=Guid.NewGuid().ToString("N");
        //context.Response.Write(path+"<br/>");
        ftpClient.Get(paths[paths.Length-1],storePath,fileName);  
        ftpClient.DisConnect();        
        string file = storePath + "\\" + fileName;
        //context.Response.Write(file);
        if(File.Exists(file))
        {
            byte[] buffer = File.ReadAllBytes(file);   
            buffer = ImageHelper.ImageToBit(ImageHelper.BitToImage(buffer),10);
            context.Response.OutputStream.Write(buffer, 0, buffer.Length);
            File.Delete(file);
        }
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}
View Code

JS文件

 <script src="Myjs/highslide/highslide.js" type="text/javascript"></script>

<script type="text/javascript">

     // remove the registerOverlay call to disable the controlbar
     hs.registerOverlay(
        {
            thumbnailId: null,
            overlayId: 'controlbar',
            position: 'top right',
            hideOnMouseOut: true
        }
    );

     hs.graphicsDir = 'Myjs/highslide/graphics/';
     hs.outlineType = 'rounded-white';
     hs.captionEval = 'this.thumb.title';
</script>

 

 

展示效果图：

 

posted @ 2019-12-05 16:20  小小枝子  阅读(323)  评论(0)    收藏  举报