HttpURLConnection，如何通過post發送參數？

Question

String pathToOurFile = "/sdcard/DCIM/Camera/foto.jpg"; 
    String urlServer = "http://server/upload.php";   
    String lineEnd = "\r\n"; 
    String twoHyphens = "--"; 
    String boundary = "*****";   
    . 
    . 
    . 
    URL url = new URL(urlServer); 
    connection = (HttpURLConnection) url.openConnection(); 

    // Allow Inputs & Outputs 
    connection.setDoInput(true); 
    connection.setDoOutput(true); 
    connection.setUseCaches(false); 

    // Enable POST method 
    connection.setRequestMethod("POST"); 

    connection.setRequestProperty("Connection", "Keep-Alive"); 
    connection.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary); 

    outputStream = new DataOutputStream(connection.getOutputStream()); 
    outputStream.writeBytes(twoHyphens + boundary + lineEnd); 
    outputStream.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + pathToOurFile +"\"" + lineEnd); 
    outputStream.writeBytes(lineEnd); 

與上面的代碼，我上傳到服務器中的圖像，而不是如何通過郵寄

有誰知道傳遞參數字符串類型？

Answer 1

每個參數，其中PARAMNAME = paramData：

outputStream.writeBytes(twoHyphens + boundary + lineEnd); 
outputStream.writeBytes('Content-Disposition: form-data; name="paramName"' + lineEnd); 
outputStream.writeBytes(lineEnd); 
outputStream.writeBytes(paramData); 

Answer 2

我發現這個博客有用寫一些多形式的數據代碼：
http://blog.rafaelsanches.com/2011/01/29/upload-using-multipart-post-using-httpclient-in-android/

不要忘記改變boundary變量匹配您在HttpURLConnection中指定的用於將多部分表單發送到服務器的內容。