multipart http請求上傳圖像

Question

我試圖使用多部分發布請求上傳兩個字符串參數（令牌和源）和從移動設備捕獲的圖像（返回jpeg編碼的字節[]）。但它確實產生錯誤，我確信是由於請求不正確。

我仍然不確定有關創建多部分發布請求的註釋。所以任何有用的鏈接和資源都會很好。

的代碼是黑莓Java開發

//------------------------------------------------------------------------------// 

StringBuffer buffer = new StringBuffer(); 
String boundary = "--@#$--"; 
byte[] image = byte[] from camera.getsnapshot; 

buffer.append(boundary+"\r\nContent-Disposition: form- data;name=\"token\"\r\n"+token+"\r\n"); 

buffer.append(boundary+"\r\nContent-Disposition: form- data;name=\"source\"\r\n"+"Blackberry"+"\r\n"); 

buffer.append(boundary+"\r\nContent-Disposition: form- data;name=\"file.jpg\";filename=\""+ "file.jpg"+"\""+"\n" + "Content- Type:image/jpeg"+"\n"+ "Content-Transfer-Encoding: binary" + boundary +"\r\n" +new String(image)); 
buffer.append("\r\n" + boundary + "\r\n"); 

String string = new String(buffer); 

byte[] post = string.getBytes(); 



HttpConnection connection = (HttpConnection)Connector.open(url); 

connection.setRequestMethod("POST"); 

connection.setRequestProperty(HttpProtocolConstants.HEADER_CONTENT_TYPE, 
HttpProtocolConstants.CONTENT_TYPE_MULTIPART_FORM_DATA+ 
";boundary="+boundary); 

    connection.setRequestProperty(HttpProtocolConstants.HEADER_CONTENT_LENGTH,String.valueOf(post.length));  

connection.setRequestProperty("User-Agent", "Profile/MIDP_2.0 Configuration/CLDC-1.0"); 
OutputStream postStream =connection.openOutputStream(); 
postStream.write(post,0,post.length); 
postStream.close(); 

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Answer 1

也許這個諾基亞社區wiki頁面可以幫助您：HTTP Post multipart file upload in Java ME