Android Network communications (1)

Use Httpurlconnecation for communication

1. GET Request:

New Thread () {public void run () {try{//1. Connect network  Create URL object url url = new URL ("http://www.baidu.com");//2. Open Connection  And get HttpURLConnection object httpurlconnection Huc = (httpurlconnection) url.openconnection ();//3. Reads the data huc.setdoinput (true) of the object resource,//sets the Read data Huc.setrequestmethod ("GET");//sets the request Mode  gethuc.connect ();//Establish link success// Get read stream InputStream is = Huc.getinputstream (); BufferedReader br = new BufferedReader (new InputStreamReader (IS))//4. Gets the character data read to  create StringBuilder object StringBuilder SB = new StringBuilder ();//5. read data string line = "", while ((Line=br.readline ())!=null) {sb.append (line+ "\ n");//collect Read Data} Gets the Message object message msg = Message.obtain (); msg.obj = Sb;msg.what = 1;hd.sendmessage (msg);} catch (Exception e) {//TODO auto-generated catch Blocke.printstacktrace ();}}}. Start ();

2. Post request:

New Thread () {public void run () {try{//1. Get URL object url url = new URL ("Http://wwwtest.rupeng.cn:8888/QueryAvatarInfo.ashx") ;//2. Get HttpURLConnection object HttpURLConnection Huc = (httpurlconnection) url.openconnection ();//3. setting Read in and write out Huc.setdoinput (true); Huc.setdooutput (True);//4. Set the request mode Huc.setrequestmethod ("POST");//5. Get write stream OutputStream OS = Huc.getoutputstream (); O S.write (("Action=getallnames"). GetBytes ()); Os.flush ();//6. Link huc.connect ();//7. Read return data InputStream is = Huc.getinputstream (); BufferedReader br = new BufferedReader (new InputStreamReader (IS)); StringBuilder sb = new StringBuilder (); String line= ""; while ((Line=br.readline ())!=null) {sb.append (line+ "\ n");} Message msg = Message.obtain (); msg.obj = Sb;msg.what = 1;//send Data hd.sendmessage (msg);//Close Resource is.close (); Br.close (); O S.close ();} catch (Exception e) {//TODO auto-generated catch Blocke.printstacktrace ();}};}. Start ();

Use HttpClient for communication

GET

New Thread () {///time-consuming operation public void run () {///1, creating HttpClient object  HttpClient HC = new Defaulthttpclient ();//2. Setting the request mode HttpGet HG = new HttpGet ("http://www.baidu.com/"); Try{//3. The client performs a GET request to get the answer object HttpResponse hr = Hc.execute (Hg);//4. Get through the Answer object The Entity data Object Httpentity he = Hr.getentity ();//5. Parse the data by Entityutils tool class string, "entityutils.tostring" (He, "UTF-8");// Send data via handler message msg = Message.obtain (); msg.obj = Data;msg.what = 1;hd.sendmessage (msg);} catch (Clientprotocolexception e) {//Todo auto-generated catch Blocke.printstacktrace ()} catch (Exception e) {//Todo Aut O-generated catch Blocke.printstacktrace ();}}. Start ();

　　

Android Network communications (1)