Android网络编程之Http通信(cmwap处理)

先附上一个Demo的截图：

 

 

需要Demo的可以直接下载来看看：http://download.csdn.net/detail/shinay/4380308

在Android开发Http程序的时候，可以选择HttpURLConnection和HttpClient接口进行编程，下面就说下这两种方式的写法：

HttpURLConnection
get方式：

/** * 通过Get方式从网络获取数据 * @param urlString URL地址 */public static String getResultFromNetByGet() {String urlString = "http://suggestion.baidu.com/su?wd=a";StringBuffer sb = new StringBuffer();try {URL url = new URL(urlString);HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setRequestMethod("GET"); // 设置请求方式为GET, 由于默认为GET, 所以这里可以省略/** * 得到InputStream对象, 调用getInputStream会 * 自动去调用connect()方法, 因此前面我们可以不 * 用自己调connect()方法 */InputStream in = connection.getInputStream();/** * 通过InputStream获取到Reader对象, 方便我们 * 读取数据, 并设置对应编码避免中文乱码问题 */InputStreamReader isr = new InputStreamReader(in, "GBK");BufferedReader reader = new BufferedReader(isr);String temp;while((temp = reader.readLine()) != null) {sb.append(temp);}in.close(); // 关闭InputStreamconnection.disconnect(); // 断开连接} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return sb.toString();}

 

post方式：

/** * 通过Post方式从网络获取数据 * @param urlString URL地址 */public static String getResultFromNetByPost() {String urlString = "http://www.kd185.com/ems.php";String wen = "MS2201828";        String btnSearch = "EMS快递查询";StringBuffer sb = new StringBuffer();URL url;try {url = new URL(urlString);HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setRequestMethod("POST"); // 设置请求方式为POST// connection.setConnectTimeout(10000); // 连接超时 单位毫秒        // connection.setReadTimeout(2000); // 读取超时 单位毫秒connection.setDoOutput(true); // 是否输入参数StringBuffer params = new StringBuffer();        // 表单参数与get形式一样params.append("wen").append("=").append(wen).append("&")            .append("btnSearch").append("=").append(btnSearch);        byte[] bytes = params.toString().getBytes();        connection.getOutputStream().write(bytes); // 输入参数                InputStream in = connection.getInputStream();InputStreamReader isr = new InputStreamReader(in, "GBK");BufferedReader reader = new BufferedReader(isr);String temp;while((temp = reader.readLine()) != null) {sb.append(temp);}in.close(); // 关闭InputStreamconnection.disconnect(); // 断开连接} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return sb.toString();}

 

HttpClient
get方式：

        /** * 通过Get方式从网络获取数据 * @param urlString URL地址 */public static String getResultFromNetByGet() {String urlString = "http://suggestion.baidu.com/su?wd=a";StringBuffer sb = new StringBuffer();try {// HttpGet连接对象  HttpGet httpRequest = new HttpGet(urlString);// 取得HttpClient对象  HttpClient httpclient = new DefaultHttpClient();// 请求HttpClient，取得HttpResponse  HttpResponse httpResponse;httpResponse = httpclient.execute(httpRequest);// 请求成功  if(httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {  // 取得返回的字符串  String strResult = EntityUtils.toString(httpResponse.getEntity());  sb.append(strResult);} else {  sb.append("请求错误!");}  } catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}  return sb.toString();}

post方式：

/** * 通过Post方式从网络获取数据 * @param urlString URL地址 */public static String getResultFromNetByPost() {String urlString = "http://www.kd185.com/ems.php";String wen = "MS2201828";        String btnSearch = "EMS快递查询";StringBuffer sb = new StringBuffer();try {// HttpPost连接对象  HttpPost httpRequest = new HttpPost(urlString);  // 使用NameValuePair来保存要传递的Post参数  List<NameValuePair> params = new ArrayList<NameValuePair>();  // 添加要传递的参数  params.add(new BasicNameValuePair("wen", wen));  params.add(new BasicNameValuePair("btnSearch", btnSearch));  // 设置字符集  //HttpEntity httpentity = new UrlEncodedFormEntity(params, "GBK");HttpEntity httpentity = new UrlEncodedFormEntity(params);// 请求httpRequest  httpRequest.setEntity(httpentity);  // 取得默认的HttpClient  HttpClient httpclient = new DefaultHttpClient();  // 取得HttpResponse  HttpResponse httpResponse = httpclient.execute(httpRequest);  // 请求成功  if(httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {  // 取得返回的字符串  String strResult = EntityUtils.toString(httpResponse.getEntity());  sb.append(new String(strResult.getBytes("iso8859_1"), "gbk"));} else {  sb.append("请求错误!");}  } catch (UnsupportedEncodingException e) {e.printStackTrace();} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}  return sb.toString();}

访问网络需要如下权限

    <uses-permission android:name="android.permission.INTERNET"/>

注意：在Android手机上，如果网络设置为cmwap方式上网的话，在有些机子或者有些ROM中是无法正常访问的，因此在这种情况下，还要用代理的方式，下面就讲讲：

首先是判断当前网络是否为cmwap：

/** * 判断当前网络模式是否为CMWAP * @param context * @return */public static boolean isCmwapNet(Context context) {ConnectivityManager manager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);  NetworkInfo netWrokInfo = manager.getActiveNetworkInfo();  if(netWrokInfo == null || !netWrokInfo.isAvailable()) { return false;} else if (netWrokInfo.getTypeName().equals("mobile")&& netWrokInfo.getExtraInfo().equals("cmwap")){return true;        }return false;}

当然还要加上需要权限

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

对应的方法我就不说明了，直接列出：

/** * 通过Get方式从网络获取数据(网络模式为CMWAP) * 需要使用代理 * @param urlString URL地址 */public static String getResultFromNetByGetAndCmwap() {String urlString = "http://10.0.0.172/su?wd=a";StringBuffer sb = new StringBuffer();try {URL url = new URL(urlString);HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setRequestProperty("X-Online-Host", "suggestion.baidu.com");  connection.setRequestMethod("GET"); // 设置请求方式为GET, 由于默认为GET, 所以这里可以省略/** * 得到InputStream对象, 调用getInputStream会 * 自动去调用connect()方法, 因此前面我们可以不 * 用自己调connect()方法 */InputStream in = connection.getInputStream();/** * 通过InputStream获取到Reader对象, 方便我们 * 读取数据, 并设置对应编码避免中文乱码问题 */InputStreamReader isr = new InputStreamReader(in, "GBK");BufferedReader reader = new BufferedReader(isr);String temp;while((temp = reader.readLine()) != null) {sb.append(temp);}in.close(); // 关闭InputStreamconnection.disconnect(); // 断开连接} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return sb.toString();}

/** * 通过Post方式从网络获取数据(网络模式为CMWAP) * 需要使用代理 * @param urlString URL地址 */public static String getResultFromNetByPostAndCmwap() {String urlString = "http://10.0.0.172/ems.php";String wen = "MS2201828";        String btnSearch = "EMS快递查询";StringBuffer sb = new StringBuffer();URL url;try {url = new URL(urlString);HttpURLConnection connection = (HttpURLConnection) url.openConnection();connection.setRequestProperty("X-Online-Host", "www.kd185.com");  connection.setRequestMethod("POST"); // 设置请求方式为POST// connection.setConnectTimeout(10000); // 连接超时 单位毫秒        // connection.setReadTimeout(2000); // 读取超时 单位毫秒connection.setDoOutput(true); // 是否输入参数StringBuffer params = new StringBuffer();        // 表单参数与get形式一样params.append("wen").append("=").append(wen).append("&")            .append("btnSearch").append("=").append(btnSearch);        byte[] bytes = params.toString().getBytes();        connection.getOutputStream().write(bytes); // 输入参数                InputStream in = connection.getInputStream();InputStreamReader isr = new InputStreamReader(in);BufferedReader reader = new BufferedReader(isr);String temp;while((temp = reader.readLine()) != null) {sb.append(temp);}in.close(); // 关闭InputStreamconnection.disconnect(); // 断开连接} catch (MalformedURLException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}return sb.toString();}

/** * 通过Get方式从网络获取数据(网络模式为CMWAP) * 需要使用代理 * @param urlString URL地址 */public static String getResultFromNetByGetAndCmwap() {String urlString = "/su?wd=a";StringBuffer sb = new StringBuffer();try {HttpHost proxy = new HttpHost("10.0.0.172", 80, "http");HttpHost target = new HttpHost("suggestion.baidu.com", 80, "http");// HttpGet连接对象  HttpGet httpRequest = new HttpGet(urlString);// 取得HttpClient对象  HttpClient httpclient = new DefaultHttpClient();httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);// 请求HttpClient，取得HttpResponse  HttpResponse httpResponse;httpResponse = httpclient.execute(target, httpRequest);// 请求成功  if(httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {  // 取得返回的字符串  String strResult = EntityUtils.toString(httpResponse.getEntity());  sb.append(strResult);} else {  sb.append("请求错误!");}  } catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}  return sb.toString();}

/** * 通过Post方式从网络获取数据(网络模式为CMWAP) * 需要使用代理 * @param urlString URL地址 */public static String getResultFromNetByPostAndCmwap() {String urlString = "/ems.php";String wen = "MS2201828";        String btnSearch = "EMS快递查询";StringBuffer sb = new StringBuffer();try {HttpHost proxy = new HttpHost("10.0.0.172", 80, "http");HttpHost target = new HttpHost("www.kd185.com", 80, "http");// HttpPost连接对象  HttpPost httpRequest = new HttpPost(urlString);  // 使用NameValuePair来保存要传递的Post参数  List<NameValuePair> params = new ArrayList<NameValuePair>();  // 添加要传递的参数  params.add(new BasicNameValuePair("wen", wen));  params.add(new BasicNameValuePair("btnSearch", btnSearch));  // 设置字符集  //HttpEntity httpentity = new UrlEncodedFormEntity(params, "GBK");HttpEntity httpentity = new UrlEncodedFormEntity(params);// 请求httpRequest  httpRequest.setEntity(httpentity);  // 取得默认的HttpClient  HttpClient httpclient = new DefaultHttpClient();  httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);// 取得HttpResponse  HttpResponse httpResponse = httpclient.execute(target, httpRequest);  // 请求成功  if(httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {  // 取得返回的字符串  String strResult = EntityUtils.toString(httpResponse.getEntity());  //sb.append(new String(strResult.getBytes("iso8859_1"), "gbk"));sb.append(strResult);} else {  sb.append("请求错误!");}  } catch (UnsupportedEncodingException e) {e.printStackTrace();} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}  return sb.toString();}