Demo of Android send get and POST request _android

4.0 after network access must be a separate child thread access, or can not run, there is a request to send the tool class Getpostutil

Copy Code code as follows:

public class Getpostutil
{
/**
* Request to send the Get method to the specified URL
*
* @param URL
* Send the requested URL
* @param params
* Request parameter, request parameter should be the form of name1=value1&name2=value2.
* @return The response of the remote resource represented by the URL
*/
public static string Sendget (string url, string params)
{
String result = "";
BufferedReader in = null;
Try
{
String urlname = URL + "?" + params;
URL realurl = new URL (urlname);
Opening and linking to URLs
URLConnection conn = Realurl.openconnection ();
To set common request properties
Conn.setrequestproperty ("Accept", "*/*");
Conn.setrequestproperty ("Connection", "keep-alive");
Conn.setrequestproperty ("User-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ");
Establish the actual connection
Conn.connect ();
Get all response header fields
map<string, list<string>> map = Conn.getheaderfields ();
Iterate through all the response header fields
For (String Key:map.keySet ())
{
SYSTEM.OUT.PRINTLN (key + "--->" + map.get (key));
}
Defines the response of a bufferedreader input stream to read a URL
in = new BufferedReader (
New InputStreamReader (Conn.getinputstream ()));
String Line;
while (line = In.readline ())!= null)
{
result = "\ n" + line;
}
}
catch (Exception e)
{
SYSTEM.OUT.PRINTLN ("Send GET request exception!") "+ e);
E.printstacktrace ();
}
Use the finally block to close the input stream
Finally
{
Try
{
if (in!= null)
{
In.close ();
}
}
catch (IOException ex)
{
Ex.printstacktrace ();
}
}
return result;
}
/**
* Request to send post method to specified URL
*
* @param URL
* Send the requested URL
* @param params
* Request parameter, request parameter should be the form of name1=value1&name2=value2.
* @return The response of the remote resource represented by the URL
*/
public static string Sendpost (string url, string params)
{
PrintWriter out = null;
BufferedReader in = null;
String result = "";
Try
{
URL realurl = new URL (URL);
Opening and linking to URLs
URLConnection conn = Realurl.openconnection ();
To set common request properties
Conn.setrequestproperty ("Accept", "*/*");
Conn.setrequestproperty ("Connection", "keep-alive");
Conn.setrequestproperty ("User-agent",
"Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1) ");
Send POST request must be set as follows two lines
Conn.setdooutput (TRUE);
Conn.setdoinput (TRUE);
Gets the output stream corresponding to the URLConnection object
out = new PrintWriter (Conn.getoutputstream ());
Send Request parameters
Out.print (params);
Buffer of flush output stream
Out.flush ();
Defines the response of a bufferedreader input stream to read a URL
in = new BufferedReader (
New InputStreamReader (Conn.getinputstream ()));
String Line;
while (line = In.readline ())!= null)
{
result = "\ n" + line;
}
}
catch (Exception e)
{
SYSTEM.OUT.PRINTLN ("Send POST request exception!) "+ e);
E.printstacktrace ();
}
Use the finally block to turn off the output stream, the input stream
Finally
{
Try
{
if (out!= null)
{
Out.close ();
}
if (in!= null)
{
In.close ();
}
}
catch (IOException ex)
{
Ex.printstacktrace ();
}
}
return result;
}
}

Activity Class Code

Copy Code code as follows:

public class Getpostmain extends activity
{
Button get, Post;
EditText Show;
@Override
public void OnCreate (Bundle savedinstancestate)
{
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.main);
get = (Button) Findviewbyid (r.id.get);
Post = (Button) Findviewbyid (r.id.post);
Show = (edittext) Findviewbyid (r.id.show);
Update UI with Handler
Final Handler h = new Handler () {
@Override
public void Handlemessage (msg) {
if (msg.what==0x123) {
Show.settext (Msg.obj.toString ());
}
}
};

Get.setonclicklistener (New Onclicklistener ()
{
@Override
public void OnClick (View v)
{
New Thread (New Accessnetwork ("Get", "http://192.168.1.88:8080/abc/a.jsp", NULL, h)). Start ();
}
});
Post.setonclicklistener (New Onclicklistener ()
{
@Override
public void OnClick (View v)
{
New Thread (New Accessnetwork ("POST", "http://192.168.1.88:8080/abc/login.jsp", "Name=crazyit.org&pass=leegang") , h)). Start ();
}
});
}
}
Class Accessnetwork implements runnable{
Private String op;
Private String URL;
Private String params;
Private Handler H;

Public Accessnetwork (String op, String URL, string Params,handler h) {
Super ();
This.op = op;
This.url = URL;
This.params = params;
This.h = h;
}
@Override
public void Run () {
Message m = new Message ();
M.what = 0x123;
if (Op.equals ("get")) {
LOG.I ("IIIIIII", "Send Get Request");
m.obj = getpostutil.sendget (URL, params);
LOG.I ("IIIIIII", ">>>>>>>>>>>>" +m.obj);
}
if (Op.equals ("POST")) {
LOG.I ("IIIIIII", "send POST request");
m.obj = getpostutil.sendpost (URL, params);
LOG.I ("Gggggggg", ">>>>>>>>>>>>" +m.obj);
}
H.sendmessage (m);
}
}