WebClient上传文件Jsp接受文件流数据

最新推荐文章于 2022-11-07 23:01:35 发布

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最新推荐文章于 2022-11-07 23:01:35 发布

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本文链接：https://blog.youkuaiyun.com/superhoy/article/details/8107935

CS软件给BS端jsp页面发送数据，jsp接受数据并保存为文件。

以下是Csharp发送数据代码：

using (FileStream fileStream = new FileStream(file.FullName, FileMode.Open, FileAccess.Read))
                            {
                                long len = fileStream.Length;
                                byte[] imgBytes = new byte[fileStream.Length];
                                fileStream.Read(imgBytes, 0, (int)fileStream.Length);
                                WebClient client = new WebClient();
                                string guid = Guid.NewGuid().ToString("N");
                                string fileSavePath = GetFileSavePath();
                                //路径格式http://192.168.0.201:7001/affixfile/upload.jsp?newfilename=aaa.jpg&filePath=C:\smz\01\
                                string postUrl = string.Format(@"{0}{1}.jpg&filePath={2}\0", AppConfig.GetValue("SavePhotoUrl"), guid, fileSavePath);
                                byte[] uploadByte = client.UploadData(postUrl, "POST", imgBytes);｝

下面是jsp端接受数据页面代码：

<%@ page language="java" contentType="text/html; charset=UTF-8"%> 
<%@ page import="java.util.*,java.io.*,com.itsv.cms.base.writer.PublishFileWriter;" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html lang="true">
  <head>
    <title>upload.jsp</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
  </head>
  <%
        String fileName = request.getParameter("newfilename");  
        
        String filePath = request.getRealPath("/")+"/uploadImg/"+fileName;
        System.out.println("start");
         //接收文件  
        try {
			InputStream is=request.getInputStream();
			filePath=filePath.replaceAll("\\\\", "/");
			String f=filePath.substring(0,filePath.lastIndexOf("/"));
			PublishFileWriter.createPath(f);
			File file=new File(filePath);
			FileOutputStream fos = new FileOutputStream(file);
		    int c;
		    byte b[] = new byte[4*1024];
		    while ((c=is.read(b))!=-1) {
		     fos.write(b, 0, c);
		    }
		    fos.flush();
		    is.close();

        }catch(Exception e){
        	e.printStackTrace();
        }
        System.out.println("end");
  %>
  <body>
    This a struts page. <br>
  </body>
</html>

如果是asp.net页面接受数据，可采用如下方法：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;

namespace WebCKEditor
{
    /// <summary>
    /// imgUpload 的摘要说明
    /// </summary>
    public class imgUpload : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            //context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");
            //App.Log.Info(context.Request.Url.ToString());
            //获取上传的数据流
            string fileNameStr = DateTime.Now.ToString("yyyy-MM-ddHHmmssfff"); //context.Request.QueryString["fileName"];
            Stream sr = context.Request.InputStream;
            string newfilename = context.Request.QueryString["newfilename"];

            try
            {
                string filename = fileNameStr;
                byte[] buffer = new byte[4096];
                int bytesRead = 0;
                //将当前数据流写入服务器端文件夹ClientBin下
                string targetPath = context.Server.MapPath("~/uploadImg/" + newfilename);
                using (FileStream fs = File.Create(targetPath, 4096))
                {
                    while ((bytesRead = sr.Read(buffer, 0, buffer.Length)) > 0)
                    {
                        //向文件中写信息
                        fs.Write(buffer, 0, bytesRead);
                    }
                }
                context.Response.ContentType = "text/plain";
                context.Response.Write("上传成功"+newfilename);
            }
            catch (Exception e)
            {
                context.Response.ContentType = "text/plain";
                context.Response.Write("上传失败, 错误信息:" + e.Message);
                //App.Log.Info(e.Message);
            }
            finally
            {
                sr.Dispose();
            }
        }

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