1, HttpClient method for get submission data

1. Get httpclient instance

DefaultHttpClient client = new DefaultHttpClient();

2. Prepare get request and define an httpget implementation

HttpGet get = new HttpGet(path);

3. Execute a get request

HttpResponse response = client.execute(get);

4. Get the status code returned by the server

int code = response.getStatusLine().getStatusCode();

5. Get the data returned by the server in the form of stream

if(code == 200){
    InputStream inputStream = response.getEntity().getContent();
}

6. Convert stream to string

String content = StreamTools.readStream(inputStream);

7. Display results

runOnUiThread(new Runnable() {
    @Override
    public void run() {
        Toast.makeText(MainActivity.this,content,Toast.LENGTH_SHORT).show();
    }
});

II. post data submission by HttpClient

Different from the second and third steps of get method, the body submitted by post method should be prepared, and the parameters used should be prepared in turn

2. Prepare the post request and define an httpget implementation

HttpGet post = new HttpGet(path);

3. Prepare the body submitted by post in entity form (key value pair form)

//Prepare parameters
List<NameValuePair> lists = new ArrayList<NameValuePair>();
//To prepare NameValuePair is to submit the user name and password. The key is the server key: username, password
BasicNameValuePair nameValuePair = new BasicNameValuePair("username",name);
BasicNameValuePair pwdValuePair = new BasicNameValuePair("password",pwd);
//Add nameValuePair and pwdValuePair to the collection
lists.add(nameValuePair);
lists.add(pwdValuePair);
//Preparing for entity
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(lists);
//Prepare post submit body prepare as entity (key value pair)
post.setEntity(entity);

4. Execute a post request

HttpResponse response = client.execute(post);

3, Open source project way to submit data to the server (asyncHttpClient)

1. Create AsyncHttpClient

AsyncHttpClient client = new AsyncHttpClient();

2. Make a get request

client.get(path,new AsyncHttpResponseHandler(){

    //Request success callback method
    @Override
    public void onSuccess(int statusCode,Headers,byte[] responseBody){
        Toast.makeText(getApplicationContext(),new String(responseBody,"gbk"),Toast.LENGTH_SHORT).show();
    }

    //request was aborted
    @Override
    public void onFailure(int statusCode,Header[] headers,byte[] responseBody,Throwable error){
        
    }
});

3. post request

RequestParams params = new RequesParams();
params.put("username",name);
params.put("password",pwd);

client.post(path,params,new AsyncHttpResponseHandler(){

    //Request success callback method is not login success
    @Override
    public void onSuccess(int statusCode,Headers,byte[] responseBody){
        Toast.makeText(getApplicationContext(),new String(responseBody,"gbk"),Toast.LENGTH_SHORT).show();
    }

    //request was aborted
    @Override
    public void onFailure(int statusCode,Header[] headers,byte[] responseBody,Throwable error){
        
    }

});