Three sets of API implementations send a GET, POST request to the server

1. Use the URL class implementation to send the request to the server:1.1. Get method Request:

Note: The Get method request here, if the request parameter with the past has Chinese characters, then need to do
URL encoding, otherwise it will not be carried over.
number=%e7%90%83%e7%90%83
Number= Urlencoder.encode (number, "UTF-8");
Path = path+ "? number=" +number+ "&password=" +password;
URL url = new URL (path);

Get mode: The service side to solve garbled, need to manually decode

String Encodevalue = Urlencoder. encode (Number, "iso8859-1");

Number = Urldecoder. Decode (Encodevalue, "UTF-8");

1.2. Post Method Request:

url url = new URL (path);

HttpURLConnection conn = (httpurlconnection) url.openconnection ();

Conn.setconnecttimeout (the);

//Use post mode
Conn.setrequestmethod ("POST");

//number=%e5%b0%8f%e9%8a%ae&password=sdfds
Chinese data also needs URL encoding when//post request

//The Chinese value of number is required for URL encoding
Number = Urlencoder.encode (number, "UTF-8");
System.out.println (number);
String params = "number=" +number+ "&password=" +password;

//Set the required headers for the requested information
conn.setrequestproperty ("Content-type", "application/x-www-form-urlencoded");
conn.setrequestproperty ("Content-length", params.length () + "");

//The parameter params is written to the server in the form of a stream

//plus a flag indicating that you want to write data to the server
Conn.setdooutput (true);
Conn.getoutputstream (). Write (Params.getbytes ());

int code = Conn.getresponsecode ();

Post mode, only one line of code is needed

Post is garbled//This code is only valid for post, because the decoding of the data in the requested body is used to encode the set

request. setcharacterencoding ("Utf-8");

2. Apache's object-oriented API implementation sends the request:2.1:get Way:

This set of APIs, Google engineers have been integrated into Android. So you can just take it with you.

//http://188.188.4.100:8080/day06_android/login?number=110&password=123


Number =urlencoder.encode (number, "UTF-8");
path = path+ "? number=" +number+ "&password=" +password;

//The equivalent of opening a browser client
HttpClient client = new Defaulthttpclient ();

Request for//get mode
HttpGet get = new HttpGet (path);

//Received Response object
HttpResponse response = Client.execute (get);

//Get the Status line object, and then get the status code in the status line
int code = response.getstatusline (). Getstatuscode ();

if (code==200) {

//Get the response body, get the data of the stream in the response body
//The next code is the same as before
InputStream in = Response.getentity (). getcontent ();

String value = Streamtool.decodestream (in);

2.2:post Way

HttpClient client = new Defaulthttpclient ();

//Http://188.188.4.100:8080/day06_android/login
HttpPost post = new HttpPost (path);

//Two key-value pairs
Namevaluepair pair1=new Basicnamevaluepair ("number", number);
Namevaluepair pair2=new basicnamevaluepair ("password", password);

//Put two key-value pairs in the list and then put the list into the entity
list<namevaluepair> List = new arraylist<namevaluepair> ();

List.add (PAIR1);
List.add (PAIR2);

//Here UTF-8 can encode the data and bring it over.
post.setentity (New urlencodedformentity (list, "UTF-8"));

HttpResponse response = Client.execute (post);

//Get the Status line object, and then get the status code in the status line
int code = response.getstatusline (). Getstatuscode ();

3 Use the Open source framework to send requests:

Go to GitHub to download the search for async http, downloaded to put the COM file into the project directory can be used, it is using the Asynchttpclient API

3.1:get Way:

Path = path+ "? number=" +number+ "&password=" +password;
Asynchttpclient client = new Asynchttpclient ();

Client.get (Path, new Asynchttpresponsehandler () {

//accesses the network, the server is called when it successfully processes the client's request
@Override
public void onsuccess (int statusCode, header[] headers,
byte[] responsebody) {

Toast.maketext (Mainactivity.this, "The result of the login is:" + new String (Responsebody), 0). Show ();

When a network is accessed, a request failure is invoked
@Override
public void onfailure (int statusCode, header[] headers,
Byte[] responsebody, throwable error) {

Toast.maketext (Mainactivity.this, "Sorry, the server is unresponsive ... ", 0). Show ();
}
});

3.2:post Way

asynchttpclient client = new Asynchttpclient ();

requestparams params = new Requestparams ();
params.add ("number", number);
params.add ("password", password);

client.post (Path, params,new Asynchttpresponsehandler () {

//accesses the network, the server is called when it successfully processes the client's request
@Override
public void onsuccess (int statusCode, header[] headers,
byte[] responsebody) {

Toast.maketext (Mainactivity.this, "The result of the post login is:" + new String (Responsebody), 0). Show ();

When a network is accessed, a request failure is invoked
@Override
public void onfailure (int statusCode, header[] headers,
Byte[] responsebody, throwable error) {

Toast.maketext (Mainactivity.this, "Sorry, the server is unresponsive ... ", 0). Show ();
}
});

Three sets of API implementations send a GET, POST request to the server