c#文件流上传图片
1、第一步 定義參數
//主表TableA
public class TableA
{
public List<TableB> AccidentImgByte { get; set; }
}
//子表TableB
public class TableB{
public Byte[] AccidentImgflow { get; set; }//文件流
public String AccidentImgName { get; set; }//文件名稱
public String AccidentImgExt { get; set; }//文件格式
}
2、接口
?public void AccidentImg_Request(TableA tModel){
?string VisitImgFile = string.Empty;//圖片路徑
if (bmModel.AccidentImgByte != null)
{
foreach (var item in tModel.AccidentImgByte)
{
VisitImgFile += AttachmentUrl(item.AccidentImgflow, item.AccidentImgName, item.AccidentImgExt) + ",";
}
if (!String.IsNullOrEmpty(VisitImgFile?))
{
VisitImgFile = VisitImgFile.Substring(0, VisitImgFile.Length - 1);
}
}
}
?
?
/// <summary>
/// 圖片處理方法
/// </summary>
/// <param name="fileNameAttachment">文件流</param>
/// <param name="fileName">文件名稱</param>
/// <param name="fileExt">文件格式</param>
/// <returns></returns>
private String AttachmentUrl(Byte[] fileNameAttachment, string fileName, string fileExt)
{
String aUrl = System.Web.Configuration.WebConfigurationManager.AppSettings["web.config配置上傳地址"];//服務器地址,用于返回服務器圖片地址組合,如:http://x.x.x/
try
{
//寫入目錄
string attachmentPath = System.Web.Configuration.WebConfigurationManager.AppSettings["web.config配置上傳地址"] + fileName + fileExt;
File.WriteAllBytes(attachmentPath, fileNameAttachment);
aUrl = aUrl + fileName + fileExt;//拼接返回地址 如:http://x.x.x/測試1.jpg
}
catch (Exception ex)
{
HX.BPM.Common.LogWriter.Write("日志", "BaggageMonitorAdd_Request", "行李監控流程發起處理異常", ex.Message);
aUrl = null;
}
return aUrl;
}
3、前端(外部)調用
private void button1_Click(object sender, EventArgs e)
{
?TableA ta=new TableA();
ta.AccidentImgByte = new AttModel[2];//定義長度
byte[] aImag = FileContent(@"本地圖片路徑");
ta.AccidentImgByte[0]=new TableB() {
AccidentImgflow = aImag,
AccidentImgName = "測試1",
AccidentImgExt=".jpg"
};
aImag = FileContent(@"本地圖片路徑");
ta.AccidentImgByte[1] = new TableB()
{
AccidentImgflow = aImag,
AccidentImgName = "測試2",
AccidentImgExt = ".jpg"
};
? var result = AccidentImg_Request(ta);
}
//文件轉換成流
private static byte[] FileContent(string fileName)
{
FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
try
{
byte[] buffur = new byte[fs.Length];
fs.Read(buffur, 0, (int)fs.Length);
return buffur;
}
catch (Exception ex)
{
return null;
}
finally
{
if (fs != null)
fs.Close();
}
}
轉載于:https://www.cnblogs.com/chj929555796/p/7027842.html
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