android類比post請求上傳檔案

這個是查看網上的資料及android sdk 開發範例書上的例子之後做出來的，基本上是粘過來的，只是添加了幾句代碼。下面是代碼：

 

public static String uploadBitmap1(String urlString,byte[] imageBytes){

String endString = "/r/n";

String twoHyphen = "--";

String boundary = "*****";

try {

URL url = new URL(urlString);

final HttpURLConnection con = (HttpURLConnection)url.openConnection();

//允許input、Output,不使用Cache

con.setDoInput(true);

con.setDoOutput(true);

con.setUseCaches(false);

//設定傳送的method=POST

con.setRequestMethod("POST");

//setRequestProperty

con.setRequestProperty("Connection", "Keep-Alive");

con.setRequestProperty("Charset", "UTF-8");

con.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);

 

//從主機讀取資料的逾時時間（單位：毫秒） 

con.setReadTimeout(50000);

//設定串連主機的逾時時間（單位：毫秒） 

con.setConnectTimeout(50000);

 

//System.out.println(con.getResponseCode());

//設定DataOutputStream

DataOutputStream dsDataOutputStream = new DataOutputStream(con.getOutputStream());

dsDataOutputStream.writeBytes(twoHyphen + boundary + endString);

dsDataOutputStream.writeBytes("Content-Disposition:form-data;" + "name=/"file1/";filename=/"" +

"11.jpg/"" + endString);

dsDataOutputStream.writeBytes(endString);

 

dsDataOutputStream.write(imageBytes,0,imageBytes.length);

dsDataOutputStream.writeBytes(endString);

dsDataOutputStream.writeBytes(twoHyphen + boundary + twoHyphen + endString);

 

dsDataOutputStream.close();

int cah = con.getResponseCode();

if(cah == 200){

InputStream isInputStream = con.getInputStream();

int ch;

StringBuffer buffer = new StringBuffer();

while((ch = isInputStream.read()) != -1){

buffer.append((char)ch);

}

return buffer.toString();

}else{

return "false";

}

} catch (Exception e) {

e.printStackTrace();

return "false";

}

}

 

 

傳過來的參數中byte[] imageBytes是將圖片或者是要上傳的檔案轉換後得到的byte數組。其他的就不解釋了，查看下面幾個文章就知道了（網上找到的很不錯的文章）。

http://zsnlovewl.javaeye.com/blog/636650

http://student.csdn.net/space.php?uid=46868&do=blog&id=25873

 

再寫一個簡單的Bitmap轉換成Byte數組的代碼：

 

ByteArrayOutputStream os = new ByteArrayOutputStream(); 

bm.compress(CompressFormat.JPEG, 70, os);

byte[] imgBytes = os.toByteArray(); 

bm是Bitmap對象。