Android开发之网络通信的实现

String response = null; 
Url url = new URL(path); 
HttpURLConnection connection = (HttpURLConnection) url.openConnection(); // 新建连接实例 
connection.setConnectTimeout(20000);// 设置连接超时时间，单位毫秒 
//connection.setReadTimeout(20000);// 设置读取数据超时时间，单位毫秒 
connection.setDoInput(true);// 是否打开输入流 true|false 
connection.setRequestMethod("POST");// 提交方法POST|GET 
//connection.setUseCaches(false);// 是否缓存true|false 
//connection.setRequestProperty("accept", "*/*"); 
//connection.setRequestProperty("Connection", "Keep-Alive"); 
//connection.setRequestProperty("Charset", "UTF-8"); 
//connection.setRequestProperty("Content-Length", String.valueOf(data.length)); 
//connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
connection.connect();// 打开连接端口 
int responseCode = conn.getResponseCode(); 
BufferedReader reader = null; 
if (responseCode == 200) { 
  reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8")); 
  StringBuffer buffer = new StringBuffer(); 
  String line = ""; 
  while ((line = reader.readLine()) != null) { 
    buffer.append(line); 
  } 
  response = buffer.toString(); 
} else { 
  response = "返回码："+responseCode; 
} 
reader.close(); 
conn.disconnect(); 

HttpResponse mHttpResponse = null; 
HttpEntity mHttpEntity = null; 
//创建HttpPost对象 
//HttpPost httppost = new HttpPost(path); 
//设置httpPost请求参数 
//httppost.setEntity(new UrlEncodedFormEntity(params,HTTP.UTF_8)); 
HttpGet httpGet = new HttpGet(path);   
HttpClient httpClient = new DefaultHttpClient(); 
InputStream inputStream = null; 
BufferedReader bufReader = null; 
String result = ""; 
// 发送请求并获得响应对象 
mHttpResponse = httpClient.execute(httpGet);//如果是“POST”方式就传httppost  
if (mHttpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { 
  // 获得响应的消息实体 
  mHttpEntity = mHttpResponse.getEntity(); 
  // 获取一个输入流 
  inputStream = mHttpEntity.getContent(); 
  bufReader = new BufferedReader(new InputStreamReader(inputStream));  
  String line = ""; 
  while (null != (line = bufReader.readLine())) { 
    result += line; 
  } 
  //result = EntityUtils.toString(mHttpResponse.getEntity()); 
}  
if (inputStream != null) { 
  inputStream.close(); 
} 
bufReader.close(); 
if (httpClient != null) { 
  httpClient.getConnectionManager().shutdown(); 
} 

AsyncHttpClient client = new AsyncHttpClient();  
client.get(url, new AsyncHttpResponseHandler() {  
  @Override  
  public void onSuccess(int i, Header[] headers, byte[] bytes) {        
    String response = new String(bytes, 0, bytes.length, "UTF-8");            
  }  
  @Override  
  public void onFailure(int i, Header[] headers, byte[] bytes, Throwable throwable) {  
 
  }  
});  

myWebView.getSettings().setJavaScriptEnabled(true);  
myWebView.setWebViewClient(new WebViewClient() {  
  @Override  
  public boolean shouldOverrideUrlLoading(WebView view, String url) {  
    view.loadUrl(url);  
    return true;  
  }  
});  
myWebView.loadUrl("http://"+networkAddress);