Android HttpClientConnection Get and Post - Epirus - 博客园

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来源: Android HttpClientConnection Get and Post – Epirus – 博客园

KeyPoint:

1.HttpClientConnection 默认是使用Get的方式的

Get方式的KeyCode

class DownloadTask extends AsyncTask<String, Integer, String>{
        String resultData="lee";
        @Override
        protected String doInBackground(String... params) {
             try {
                    URL url=new URL("http://www.baidu.com");
                    HttpURLConnection conn=(HttpURLConnection)url.openConnection();
                    conn.setDoInput(true);
                    InputStreamReader isr=new InputStreamReader(conn.getInputStream());
                    BufferedReader buffer=new BufferedReader(isr);
                    String inputLine="";
                
                    while((inputLine=buffer.readLine())!=null){
                        resultData+=inputLine+"\n";
                    }
                    isr.close();
                    conn.disconnect();
                    System.out.println(resultData);
                    
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
        
            }
            
        
        
            return null;
        }
        @Override
        protected void onPostExecute(String result) {
            textView.setText(resultData);
            super.onPostExecute(result);
        }
    
        
    }

  这可以作为内部类放到Activity 中然后就可以直接访问UI的组件了

2.HttpClient->Post 使用Apache的,感觉非常的简洁,一个字爽

publicvoid postData(){
    // Create a new HttpClient and Post Header
    HttpClient httpclient =newDefaultHttpClient();
    HttpPost httppost =newHttpPost("http://www.yoursite.com/script.php");

    try{
        // Add your data
        List<NameValuePair> nameValuePairs =newArrayList<NameValuePair>(2);
        nameValuePairs.add(newBasicNameValuePair("id","12345"));
        nameValuePairs.add(newBasicNameValuePair("stringdata","AndDev is Cool!"));
        httppost.setEntity(newUrlEncodedFormEntity(nameValuePairs));
     
        // Execute HTTP Post Request
        HttpResponse response = httpclient.execute(httppost);
      //Get Data 
     bufferedReader=new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
      while((inputLine=bufferedReader.readLine())!=null){resultData+=inputLine+"\n";}
        
    }catch(ClientProtocolException e){
        // TODO Auto-generated catch block
    }catch(IOException e){
        // TODO Auto-generated catch block
    }
}

如果需要使用Get方式则,设置HttpGet httpget一样的

3. HttpClientConnection POST method 官方推荐使用,其实httpclient也停止了维护,所以这个会是将来的趋势

class DownloadTask extends AsyncTask<String, Integer, String>{
        String resultData="lee";
        @Override
        protected String doInBackground(String... params) {
             try {
                    URL url=new URL("http://xxxxxx.xxxx/index.php");
                    HttpURLConnection conn=(HttpURLConnection)url.openConnection();
                    conn.setDoInput(true);
                    conn.setDoOutput(true);
                    conn.setRequestMethod("POST");
                    conn.setUseCaches(false);  
                    conn.setInstanceFollowRedirects(true);
                    conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
                    conn.connect();
                    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
                    String content="username="+URLEncoder.encode("lee","UTF-8");
                    out.writeBytes(content);
                    out.flush();
                    out.close();
                    InputStreamReader isr=new InputStreamReader(conn.getInputStream());
                    BufferedReader buffer=new BufferedReader(isr);
                    String inputLine="";
                
                    while((inputLine=buffer.readLine())!=null){
                        resultData+=inputLine+"\n";
                    }
                    isr.close();
                    conn.disconnect();
                    System.out.println(resultData);
                    
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
        
            }
            
        
        
            return null;
        }
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