使用原始的HTTP拼凑请求的方式上传多张图片

使用的是原生的谷歌写的API去做的

 /** * android上传文件到服务器 * * 下面为 http post 报文格式 * * POST/logsys/home/uploadIspeedLog!doDefault.html HTTP/1.1 * 　　 Accept: text/plain, * 　　 Accept-Language: zh-cn * 　　 Host: 192.168.24.56 * 　　 Content-Type:multipart/form-data;boundary=-----------------------------7db372eb000e2 * 　　 User-Agent: WinHttpClient * 　　 Content-Length: 3693 * 　　 Connection: Keep-Alive 注：上面为报文头 * 　　 -------------------------------7db372eb000e2 * 　　 Content-Disposition: form-data; name="file"; filename="kn.jpg" * 　　 Content-Type: image/jpeg * 　　 (此处省略jpeg文件二进制数据...） * 　　 -------------------------------7db372eb000e2-- * * @param picPaths 需要上传的文件路径集合 * @param requestURL 请求的url * @return 返回响应的内容 */    public static String uploadFile(String[] picPaths, String requestURL) {        String boundary = UUID.randomUUID().toString(); // 边界标识 随机生成        String prefix = "--", end = "\r\n";        String content_type = "multipart/form-data"; // 内容类型        String CHARSET = "utf-8"; // 设置编码        int TIME_OUT = 10 * 10000000; // 超时时间        try {            URL url = new URL(requestURL);            HttpURLConnection conn = (HttpURLConnection) url.openConnection();            conn.setReadTimeout(TIME_OUT);            conn.setConnectTimeout(TIME_OUT);            conn.setDoInput(true); // 允许输入流            conn.setDoOutput(true); // 允许输出流            conn.setUseCaches(false); // 不允许使用缓存            conn.setRequestMethod("POST"); // 请求方式            conn.setRequestProperty("Charset", "utf-8"); // 设置编码            conn.setRequestProperty("connection", "keep-alive");            conn.setRequestProperty("Content-Type", content_type + ";boundary=" + boundary);            /** * 当文件不为空，把文件包装并且上传 */            OutputStream outputSteam = conn.getOutputStream();            DataOutputStream dos = new DataOutputStream(outputSteam);            StringBuffer stringBuffer = new StringBuffer();            stringBuffer.append(prefix);            stringBuffer.append(boundary);            stringBuffer.append(end);            dos.write(stringBuffer.toString().getBytes());            String name = "userName";            dos.writeBytes("Content-Disposition: form-data; name=\"" + name + "\"" + end);            dos.writeBytes(end);            dos.writeBytes("zhangSan");            dos.writeBytes(end);            // 这里就是多张图片的地址啥的            for (int i = 0; i < picPaths.length; i++) {                File file = new File(picPaths[i]);                StringBuffer sb = new StringBuffer();                sb.append(prefix);                sb.append(boundary);                sb.append(end);                /** * 这里重点注意： name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件 * filename是文件的名字，包含后缀名的 比如:abc.png */                sb.append("Content-Disposition: form-data; name=\"" + i + "\"; filename=\"" + file.getName() + "\"" + end);                sb.append("Content-Type: application/octet-stream; charset=" + CHARSET + end);                sb.append(end);                dos.write(sb.toString().getBytes());                InputStream is = new FileInputStream(file);                byte[] bytes = new byte[8192];//8k                int len = 0;                while ((len = is.read(bytes)) != -1) {                    dos.write(bytes, 0, len);                }                is.close();                dos.write(end.getBytes());//一个文件结束标志            }            byte[] end_data = (prefix + boundary + prefix + end).getBytes();//结束 http 流             dos.write(end_data);            dos.flush();            /** * 获取响应码 200=成功 当响应成功，获取响应的流 */            int res = conn.getResponseCode();            Log.e("TAG", "response code:" + res);            if (res == 200) {                return SUCCESS;            }        } catch (MalformedURLException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }        return FAILURE;    }

服务器端:

//服务端一：下面为 Java Web 服务端 servlet 的实现代码：    /** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse * response) */    @SuppressWarnings("unchecked")    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {        // TODO Auto-generated method stub        PrintWriter out = response.getWriter();        try {            // String userName = request.getParameter("userName");//获取form            // System.out.println(userName);            List<FileItem> items = this.upload.parseRequest(request);            if (items != null && !items.isEmpty()) {                for (FileItem fileItem : items) {                    String filename = fileItem.getName();                    if (filename == null) {// 说明获取到的可能为表单数据,为表单数据时要自己读取                        InputStream formInputStream = fileItem.getInputStream();                        BufferedReader formBr = new BufferedReader(new InputStreamReader(formInputStream));                        StringBuffer sb = new StringBuffer();                        String line = null;                        while ((line = formBr.readLine()) != null) {                            sb.append(line);                        }                        String userName = sb.toString();                        System.out.println("姓名为：" + userName);                        continue;                    }                    String filepath = filedir + File.separator + filename;                    System.out.println("文件保存路径为:" + filepath);                    File file = new File(filepath);                    InputStream inputSteam = fileItem.getInputStream();                    BufferedInputStream fis = new BufferedInputStream(inputSteam);                    FileOutputStream fos = new FileOutputStream(file);                    int f;                    while ((f = fis.read()) != -1) {                        fos.write(f);                    }                    fos.flush();                    fos.close();                    fis.close();                    inputSteam.close();                    System.out.println("文件：" + filename + "上传成功!");                }            }            System.out.println("上传文件成功!");            out.write("上传文件成功!");        } catch (FileUploadException e) {            e.printStackTrace();            out.write("上传文件失败:" + e.getMessage());        }    }

下面是使用.net实现的客户端跟服务端,搞不懂.直接贴出来吧.

客户端二：下面为用 .NET 作为客户端实现的 C# 代码：

//客户端二：下面为用 .NET 作为客户端实现的 C# 代码：

/** * 下面为 http post 报文格式 * POST/logsys/home/uploadIspeedLog!doDefault.html HTTP/1.1 * 　　 Accept: text/plain, * 　　 Accept-Language: zh-cn * 　　 Host: 192.168.24.56 * 　　 Content-Type:multipart/form-data;boundary=-----------------------------7db372eb000e2 * 　　 User-Agent: WinHttpClient * 　　 Content-Length: 3693 * 　　 Connection: Keep-Alive   注：上面为报文头 * 　　 -------------------------------7db372eb000e2 * 　　 Content-Disposition: form-data; name="file"; filename="kn.jpg" * 　　 Content-Type: image/jpeg * 　　 (此处省略jpeg文件二进制数据...） * 　　 -------------------------------7db372eb000e2-- */private STATUS uploadImages(String uri) {    String boundary = "------------Ij5ei4ae0ei4cH2ae0Ef1ei4Ij5gL6";    ; // 边界标识    String prefix = "--", end = "\r\n";    /** 根据uri创建WebRequest对象**/    WebRequest httpReq = WebRequest.Create(new Uri(uri));    httpReq.Method = "POST";//方法名       httpReq.Timeout = 10 * 10000000;//超时时间    httpReq.ContentType = "multipart/form-data; boundary=" + boundary;//数据类型    /*******************************/    try {        /** 第一个数据为form，名称为par，值为123 */        StringBuilder stringBuilder = new StringBuilder();        stringBuilder.Append(prefix);        stringBuilder.Append(boundary);        stringBuilder.Append(end);        String name = "userName";        stringBuilder.Append("Content-Disposition: form-data; name=\"" + name + "\"" + end);        stringBuilder.Append(end);        stringBuilder.Append("zhangSan");        stringBuilder.Append(end);        /*******************************/        Stream steam = httpReq.GetRequestStream();//获取到请求流        byte[] byte8 = Encoding.UTF8.GetBytes(stringBuilder.ToString());//把form的数据以二进制流的形式写入        steam.Write(byte8, 0, byte8.Length);        /** 列出 G:/images/ 文件夹下的所有文件**/        DirectoryInfo fileFolder = new DirectoryInfo("G:/images/");        FileSystemInfo[] files = fileFolder.GetFileSystemInfos();        for (int i = 0; i < files.Length; i++)        　　　　{            　　　　　　FileInfo file = files[i] as FileInfo;            stringBuilder.Clear();//清理            stringBuilder.Append(prefix);            stringBuilder.Append(boundary);            stringBuilder.Append(end);            /**             * 这里重点注意： name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件             * filename是文件的名字，包含后缀名的 比如:abc.png             */            stringBuilder.Append("Content-Disposition: form-data; name=\"" + i + "\"; filename=\"" + file.Name + "\"" + end);            stringBuilder.Append("Content-Type: application/octet-stream; charset=utf-8" + end);            stringBuilder.Append(end);            byte[] byte2 = Encoding.UTF8.GetBytes(stringBuilder.ToString());            steam.Write(byte2, 0, byte2.Length);            FileStream fs = new FileStream(file.FullName, FileMode.Open, FileAccess.Read);//读入一个文件。            BinaryReader r = new BinaryReader(fs);//将读入的文件保存为二进制文件。            int bufferLength = 8192;//每次上传8k；            byte[] buffer = new byte[bufferLength];            long offset = 0;//已上传的字节数            int size = r.Read(buffer, 0, bufferLength);            while (size > 0) {                steam.Write(buffer, 0, size);                offset += size;                size = r.Read(buffer, 0, bufferLength);            }            /** 每个文件结束后有换行 **/            byte[] byteFileEnd = Encoding.UTF8.GetBytes(end);            steam.Write(byteFileEnd, 0, byteFileEnd.Length);            fs.Close();            r.Close();        }        byte[] byte1 = Encoding.UTF8.GetBytes(prefix + boundary + prefix + end);//文件结束标志        steam.Write(byte1, 0, byte1.Length);        steam.Close();        WebResponse response = httpReq.GetResponse();// 获取响应        Console.WriteLine(((HttpWebResponse) response).StatusDescription);// 显示状态        steam = response.GetResponseStream();//获取从服务器返回的流        StreamReader reader = new StreamReader(steam);        string responseFromServer = reader.ReadToEnd();//读取内容        Console.WriteLine(responseFromServer);        // 清理流        reader.Close();        steam.Close();        response.Close();        return STATUS.SUCCESS;    } catch (System.Exception e) {        Console.WriteLine(e.ToString());        return STATUS.FAILURE;    }}// 服务端二： 下面为 .NET 实现的服务端 C# 代码：protected void Page_Load(object sender, EventArgs e) {    string userName = Request.Form["userName"];//接收form    HttpFileCollection MyFilecollection = Request.Files;//接收文件    for (int i = 0; i < MyFilecollection.Count; i++) {        MyFilecollection[i].SaveAs(Server.MapPath("~/netUploadImages/" + MyFilecollection[i].FileName));//保存图片    }}

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