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I achieve the POST request in Android and upload a picture to service successful.
I did not use the setRequestProperty function; But I want to know what the effect about this function is.
This is the code:
URL url = new URL(“http://192.168.191.104:8080/myapp/servlet/MyServlet”);
HttpURLConnection connection = ((HttpURLConnection) url
.openConnection());
connection.setDoInput(true);
connection.setDoOutput(true);
connection.setUseCaches(false);
connection.setRequestMethod(“POST”);
connection.connect();
OutputStream out = connection.getOutputStream();
int len;
byte[] buffer = new byte[1024];
// 读取文件
FileInputStream fileInputStream = new FileInputStream(Environment
.getExternalStorageDirectory().getAbsolutePath() + “/123.jpg”);
while ((len = fileInputStream.read(buffer, 0, 1024)) != -1) {
out.write(buffer);
}
out.flush();
out.close();
fileInputStream.close();
InputStream input = connection.getInputStream();
while ((len = input.read(buffer)) != -1) {
Log.i(“tag”, “data:” + new String(buffer, 0, len));
}
input.close();
connection.disconnect();
Could anyone explain the effect of setRequestProperty function in HttpURLConnection?
解决方案
Mainly setRequestProperty is used to set below things as per the requirement
connection.setRequestProperty(“Connection”, “Keep-Alive”);
connection.setRequestProperty(“Content-Type”, “multipart/form-data;boundary=”+boundary);
or
Connection.setRequestProperty(“Content-Type”, “text/plain; charset=utf-8”);
Sometimes it become necessary that you have to specify Content-type for the connection.
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