//第一种
/**
* 获取参数(ArrayList<NameValuePair> nameValuePairs,String url)后post给远程服务器
* 将获得的返回结果(String)返回给调用者
* 本函数适用于查询数量较少的时候
*/
public String posturl(ArrayList<NameValuePair> nameValuePairs,String url) {
String result = "";
String tmp= "";
InputStream is = null;
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
} catch(Exception e) {
return "Fail to establish http connection!";
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
tmp = sb.toString();
} catch (Exception e) {
return "Fail to convert net stream!";
}
try {
JSONArray jArray = new JSONArray(tmp);
for(int i = 0; i < jArray.length(); i++) {
JSONObject json_data = jArray.getJSONObject(i);
Iterator<?> keys=json_data.keys();
while(keys.hasNext()) {
result += json_data.getString(keys.next().toString());
}
}
} catch (JSONException e) {
return "The URL you post is wrong!";
}
return result;
}
//第二种
/**
* 获取参数指定的网页代码，将其返回给调用者，由调用者对其解析
* 返回String
*/
public String posturl(String url) {
InputStream is = null;
String result = "";
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
} catch(Exception e) {
return "Fail to establish http connection!"+e.toString();
}
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"utf-8"));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
result=sb.toString();
} catch (Exception e) {
return "Fail to convert net stream!";
}
return result;
}
//第三种
/**
* 获取指定地址的网页数据
* 返回数据流
*/
public InputStream streampost(String remote_addr) {
URL infoUrl = null;
InputStream inStream = null;
try {
infoUrl = new URL(remote_addr);
URLConnection connection = infoUrl.openConnection();
HttpURLConnection httpConnection = (HttpURLConnection)connection;
int responseCode = httpConnection.getResponseCode();
if(responseCode == HttpURLConnection.HTTP_OK) {
inStream = httpConnection.getInputStream();
}
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return inStream;
}