【发布时间】:2011-02-15 20:41:46
【问题描述】:
我有一个 android 照片上传脚本,如果我使用 $_GET 读取一些数据,它可以很好地上传,我想使用所有 $_POST。问题是我需要在发布的请求中附加数据以包括基本名称值对以及文件上传。如果我让服务器使用 $_GET 并在 url 字符串中添加额外数据,我可以让它工作,但我想使用 post.有没有办法在文件上传中对服务器可以使用 $_POST 读取的其他帖子数据进行编码。这是函数,请注意 URL 字符串,我正在尝试获取变量 api_key、session_key 和要在 POST 请求中发送的方法。
public void uploadPhoto(FileInputStream fileInputStream, String sessionKey) throws IOException, ClientProtocolException {
URL connectURL = new URL(API_URL +"?api_key=" +API_KEY+ "&session_key=" + sessionKey + "&method=" + ApiMethods.UPLOAD_PHOTO); //server ignores this data
String lineEnd = "\r\n";
String twoHyphens = "--";
String boundary = "*****";
HttpURLConnection conn = (HttpURLConnection) connectURL.openConnection();
// Allow Inputs
conn.setDoInput(true);
// Allow Outputs
conn.setDoOutput(true);
// Don't use a cached copy.
conn.setUseCaches(false);
// Use a post method.
conn.setRequestMethod("POST");
conn.setRequestProperty("Connection", "Keep-Alive");
conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+ boundary);
DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
dos.writeBytes(twoHyphens + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\""+ "file.png" + "\"" + lineEnd);
dos.writeBytes(lineEnd);
// create a buffer of maximum size
int bytesAvailable = fileInputStream.available();
int maxBufferSize = 1028;
int bufferSize = Math.min(bytesAvailable, maxBufferSize);
byte[] buffer = new byte[bufferSize];
// read file and write it into form...
int bytesRead = fileInputStream.read(buffer, 0, bufferSize);
while (bytesRead > 0) {
dos.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
bytesRead = fileInputStream.read(buffer, 0, bufferSize);
/*
* dos.writeBytes(lineEnd); dos.writeBytes(twoHyphens + boundary +
* twoHyphens + lineEnd);
*/
}
// send multipart form data necesssary after file data...
dos.writeBytes(lineEnd);
dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
dos.flush();
// Log.d(TAG, " dos5: " + dos.toString());
InputStream is = conn.getInputStream();
// retrieve the response from server
int ch;
StringBuffer b = new StringBuffer();
while ((ch = is.read()) != -1) {
b.append((char) ch);
}
String s = b.toString();
dos.close();
}
编辑 我认为每个添加的参数都需要以下内容
dos.writeBytes("--" + boundary + lineEnd);
dos.writeBytes("Content-Disposition: form-data;name=api_key=" + lineEnd + lineEnd + API_KEY);
dos.writeBytes(lineEnd);
dos.writeBytes("--" + boundary + "--" + lineEnd);
【问题讨论】:
标签: php android post file-upload httprequest