Android连网Get、Post和HttpURLConnection
需要注意的是如果将配置文件中的权限写在<Application>节点中则系统仍然会报Permission denied的错误。
public String getDataByHttpGet(String httpUrl)
{
String result = null;
HttpGet httpGet = new HttpGet(httpUrl);
HttpClient httpClient = new DefaultHttpClient();
try {
HttpResponse httpResponse = httpClient.execute(httpGet);
if(httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK)
{
result = EntityUtils.toString(httpResponse.getEntity());
Log.v("HttpGet", result);
}
else
{
Log.v("HttpGet", "HttpGet has exception.");
}
} catch (ClientProtocolException e) {
// TODO Auto-generated cat7ch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
public String getDataByHttpPost(String httpUrl)
{
String result = null;
HttpPost httpPost = new HttpPost(httpUrl);
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("par", "request-post"));
try {
HttpEntity entity = new UrlEncodedFormEntity(params, "UTF-8");
httpPost.setEntity(entity);
HttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute(httpPost);
int code = response.getStatusLine().getStatusCode();
if( code == HttpStatus.SC_OK)
{
result = EntityUtils.toString(response.getEntity());
Log.v("HttpGet", result);
}
else
{
Log.v("HttpGet", "HttpGet has exception.");
}
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
public String Refesh(String httpUrl)
{
String result = null;
try {
URL url = new URL(httpUrl);
HttpURLConnection urlConn = (HttpURLConnection)url.openConnection();
urlConn.connect();
InputStream input = urlConn.getInputStream();
InputStreamReader inputReader = new InputStreamReader(input);
BufferedReader reader = new BufferedReader(inputReader);
String str = null;
StringBuffer sb = new StringBuffer();
while((str = reader.readLine())!=null)
{
sb.append(str).append("/n");
}
result = sb.toString();
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}