Java客戶端通過Http發送POST請求上傳文件到web服務器

1.朋友的一個需求，讓我給他實現，需求是這樣的，需要用ASP.net寫一個頁面負責處理客戶端上傳的文件，並根據傳遞的參數把文件保存到相應的目錄。客戶端是手機應用程序，因為沒學過Android，所以我只是寫了一個Java的Demo用來上傳文件。

服務端：

public partial class _Default : System.Web.UI.Page
{

    private string id = "";
    private string userName = "";
    private string type = "";
    private string fileName = "";
    //文件長度
    private long contentLength = 0;
    private static readonly string filePath = ConfigurationManager.AppSettings["filePath"];
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            id = Request["id"];
            userName = Request["user"];
            type = Request["type"];
            fileName = Request.Headers["FileName"];
            writeFile();
        }
    }

    /// <summary>
    /// 上傳文件
    /// </summary>
    private void writeFile()
    {
        try
        {
            Stream stream = Request.InputStream;
            contentLength = stream.Length;
            string currentFilePath = filePath + userName;
            if (!Directory.Exists(currentFilePath))
            {
                Directory.CreateDirectory(currentFilePath);
            }

            FileStream fileStream = File.Create(currentFilePath + @"\" + fileName);
            //每次讀取的1024個字節
            byte[] bytes = new byte[1024];
            
            int numReadByte = 0;
            while ((numReadByte = stream.Read(bytes, 0, 1024)) != 0)
            {
                fileStream.Write(bytes, 0,numReadByte);
            }
            //關閉流
            stream.Close();
            fileStream.Close();

    }

Java文件上傳客戶端示例,（幾年沒搞java有點生疏了）:

import java.io.BufferedOutputStream;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 *  
 * 只是寫的一個示例，filePath,和FileName根據需要進行調整。
 */
public class MyTest {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub

        String str="http://localhost:2906/Default.aspx?id=1&user=2&type=3";
        String filePath="D:\\Wildlife.wmv";
        String fileName="Wildlife.wmv";
        try {
            URL url=new URL(str);
            HttpURLConnection connection=(HttpURLConnection)url.openConnection();
            connection.setDoInput(true);
            connection.setDoOutput(true);
            connection.setRequestMethod("POST");
            connection.addRequestProperty("FileName", fileName);
            connection.setRequestProperty("content-type", "text/html");
            BufferedOutputStream  out=new BufferedOutputStream(connection.getOutputStream());
            
            //讀取文件上傳到服務器
            File file=new File(filePath);
            FileInputStream fileInputStream=new FileInputStream(file);
            byte[]bytes=new byte[1024];
　　　　　　　int numReadByte=0;
            while((numReadByte=fileInputStream.read(bytes,0,1024))>0)
            {
                out.write(bytes, 0, numReadByte);
            }

            out.flush();
            fileInputStream.close();
            //讀取URLConnection的響應
            DataInputStream in=new DataInputStream(connection.getInputStream());
        } catch (Exception e) {
            e.printStackTrace();
        }
        
    }

}