Android post transmission over HTTP)

Http://chunpeng.iteye.com/blog/631972

Android post transmission over HTTP is as follows:

Method 1: httppost (import org. Apache. http. Client. Methods. httppost)

The Code is as follows:

Private button button1, button2, button3;
Private textview textview1;

Button1.setonclicklistener (New button. onclicklistener (){

@ Override
Public void onclick (view arg0 ){
// Todo auto-generated
Method stub
// URL Scheme
// String uriapi = "http://www.dubblogs.cc: 8751/Android/test/API/post/index. php ";

String uriapi = "http: // 172.20.0.206: 8082 // testservelt/login. Do ";

/* Create an http post connection */
Httppost httprequest = new httppost (uriapi );

// Post operation transfer variables must be stored in the namevaluepair [] Array
// PASS Parameters
The method obtained by the server is request. getparameter ("name ")
List <namevaluepair>
Params = new arraylist <namevaluepair> ();
Params. Add (New
Basicnamevaluepair ("name", "this is Post "));
Try {



// Send an HTTP request
Httprequest. setentity (New
Urlencodedformentity (Params, HTTP. utf_8 ));
// Get http Response

Httpresponse = new defaulthttpclient(cmd.exe cute (httprequest );


// If the status code is 200 OK

If (httpresponse. getstatusline (). getstatuscode () = 200 ){

// Retrieve the response string
String
Strresult = entityutils. tostring (httpresponse. getentity ());

Textview1.settext (strresult );
} Else {
Textview1.settext ("error
Response "+ httpresponse. getstatusline (). tostring ());
}

} Catch (clientprotocolexception e ){

Textview1.settext (E. getmessage (). tostring ());

E. printstacktrace ();
} Catch (unsupportedencodingexception e ){

Textview1.settext (E. getmessage (). tostring ());

E. printstacktrace ();
} Catch (ioexception e ){

Textview1.settext (E. getmessage (). tostring ());

E. printstacktrace ();
}
}

});

Method 2: httpurlconnection and URL (import java.net. httpurlconnection; import
Java.net. url; import java.net. urlencoder ;)

Private void httpurlconnection (){
Try {
String pathurl = "http: // 172.20.0.206: 8082/testservelt/login. Do ";

// Establish a connection
URL url = new URL (pathurl );
Httpurlconnection
Httpconn = (httpurlconnection) URL. openconnection ();


//// Set Connection Properties
Httpconn. setdooutput (true); // use a URL to connect to the output

Httpconn. setdoinput (true); // use URL Connection for Input

Httpconn. setusecaches (false); // ignore Cache

Httpconn. setrequestmethod ("Post"); // sets the URL request Method
String requeststring =
"The data sent from the client to the server as a stream ...";

// Set Request attributes

// Obtain the Data byte. the encoding of the request data stream must be consistent with the encoding of the Request stream processed by the following server.
Byte [] requeststringbytes =
Requeststring. getbytes (encoding_utf_8 );

Httpconn. setrequestproperty ("Content-Length", "" +
Requeststringbytes. Length );

Httpconn. setrequestproperty ("Content-Type ",
"Application/octet-stream ");

Httpconn. setrequestproperty ("connection", "keep-alive"); // maintain a persistent connection

Httpconn. setrequestproperty ("charset", "UTF-8 ");
//

String name = urlencoder. encode ("Huang Wuyi", "UTF-8 ");

Httpconn. setrequestproperty ("name", name );


// Create an output stream and write data
Outputstream =
Httpconn. getoutputstream ();

Outputstream. Write (requeststringbytes );

Outputstream. Close ();
// Obtain the response status
Int responsecode =
Httpconn. getresponsecode ();
If (httpurlconnection. http_ OK =
Responsecode) {// connection successful

// Process data when the response is correct

Stringbuffer sb = new stringbuffer ();
String
Readline;
Bufferedreader responsereader;

// Process the response stream, which must be consistent with the encoding of the server response stream output
Responsereader = new
Bufferedreader (New inputstreamreader (httpconn. getinputstream (),
Encoding_utf_8 ));
While (Readline = responsereader. Readline ())
! = NULL ){
SB. append (Readline). append ("\ n ");

}
Responsereader. Close ();

TV. settext (sb. tostring ());
}
} Catch (exception ex ){

Ex. printstacktrace ();
}
}