HttpClient网络通信的测试

public class MainActivity extends Activity {
    private Button button_get,button_post;
    private TextView textView;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        button_get = (Button) findViewById(R.id.button1);
        button_post = (Button) findViewById(R.id.button2);
        textView = (TextView) findViewById(R.id.tv);
        button_get.setOnClickListener(new Button.OnClickListener(){

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                String url = "";//自己选择路劲
                HttpGet getrequest = new HttpGet(url);
                HttpClient client = new DefaultHttpClient();
                try {
                    HttpResponse response = client.execute(getrequest);
                    if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
                        String entity = EntityUtils.toString(response.getEntity());
                        textView.setText(entity);
                    }else{
                        textView.setText("网络错误");
                    }
                } catch (ClientProtocolException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
            
        });
        
        button_post.setOnClickListener(new Button.OnClickListener(){

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                String url = "";//自己选择路劲
                HttpPost request_post = new HttpPost(url);
                List<NameValuePair> pairs = new ArrayList<NameValuePair>();
                pairs.add(new BasicNameValuePair("pairs", "request_post"));
                HttpClient client = new DefaultHttpClient();
                try{
                    HttpEntity entity = new UrlEncodedFormEntity(pairs,"UTF-8");
                    request_post.setEntity(entity);
                    HttpResponse response = client.execute(request_post);
                    if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK){
                          String str = EntityUtils.toString(response.getEntity());   
                          textView.setText(str);   
                    }else{
                        textView.setText("网络错误");
                    }
                }catch (Exception e) {
                    // TODO: handle exception
                }
            }});  
    }
}