HttpClient网络连接代码

来源：互联网发布：同程网络编辑：程序博客网时间：2024/04/19 10:52

Android网络连接代码如下：

public class NetworkUtils {
private static final String TAG ="NetworkUtils";
private static final String CHARSET=HTTP.UTF_8;
private static HttpClient singleHttpClient;

private NetworkUtils(){

}

/**
* 保证HttpClient的单例使用
*/
public static synchronized HttpClient getHttpClient(){
if(null==singleHttpClient){
HttpParams params = new BasicHttpParams();
/* 设置一些基本参数 */
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params, CHARSET);
HttpProtocolParams.setUseExpectContinue(params, true);
String userAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2) Gecko/20100115 Firefox/3.6";
HttpProtocolParams.setUserAgent(params,userAgent);

/* 超时设置 */
/* 从连接池中取连接的超时时间 */
ConnManagerParams.setTimeout(params, 1000);
/* 连接超时 */
HttpConnectionParams.setConnectionTimeout(params, 2000);
/* 请求超时 */
HttpConnectionParams.setSoTimeout(params, 4000);

/* 设置我们的HttpClient支持HTTP和HTTPS两种模式 */
SchemeRegistry schReg = new SchemeRegistry();
schReg.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
schReg.register(new Scheme("https", SSLSocketFactory.getSocketFactory(), 443));

/* 使用线程安全的连接管理来创建HttpClient */
ClientConnectionManager conMgr = new ThreadSafeClientConnManager(params, schReg);
singleHttpClient = new DefaultHttpClient(conMgr, params);
}
return singleHttpClient;
}

/****************************************************************/

public static String doPost(String url, List<NameValuePair> params) {
String strResult = "doPostError";

String temp = url.toLowerCase();
if (!temp.startsWith("http://") && !temp.startsWith("https://")) {
url = "http://" + url;
}

try {
// 参数
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(params, CHARSET);

// 创建POST请求
HttpPost request = new HttpPost(url);
request.setEntity(entity);
// 发送请求
HttpClient client = getHttpClient();
HttpResponse response = client.execute(request);
if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
strResult = "Error Response: " + response.getStatusLine().toString();
}else{
strResult = EntityUtils.toString(response.getEntity());
}
} catch (UnsupportedEncodingException e) {
strResult = e.getMessage().toString();
e.printStackTrace();
} catch (ClientProtocolException e) {
strResult = e.getMessage().toString();
e.printStackTrace();
} catch (IOException e) {
if(null!=e){
if(null!=e.getMessage()){
strResult = e.getMessage().toString();
e.printStackTrace();
}else{
strResult = "HttpClient excute Error,"+e;
}
}
if(null==e){
strResult = "HttpClient excute Error, connection was aborted";
}

if(strResult.toLowerCase().contains("error") || strResult.toLowerCase().contains("timed out")
||strResult.toLowerCase().contains("refuse")){
strResult="connection error，please check whether server is running";
}

} catch (Exception e) {
strResult = e.getMessage().toString();
e.printStackTrace();
}

LogUtils.getInstance().d(strResult);
return strResult;
}
/****************************************************************/

调用函数时，注意增加判断结果

if(result.toString().contains("error")){
CommonTools.toast(activity, "连接服务器失败，请检查网络或服务器是否正常");
return;
}

/****************************************************************/

public static String doGet(String url) {
String strResult = "doGetError";

String temp = url.toLowerCase();
if (!temp.startsWith("http://") && !temp.startsWith("https://")) {
url = "http://" + url;
}

try {
// 发送请求
HttpClient client = getHttpClient();

// 创建Get请求
HttpGet request = new HttpGet(url);
HttpResponse response = client.execute(request);

if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) {
strResult = "Error Response: " + response.getStatusLine().toString();
}
HttpEntity resEntity = response.getEntity();
return (resEntity == null) ? null : EntityUtils.toString(resEntity, CHARSET);
} catch (UnsupportedEncodingException e) {
strResult = e.getMessage().toString();
e.printStackTrace();
} catch (ClientProtocolException e) {
strResult = e.getMessage().toString();
e.printStackTrace();
} catch (IOException e) {
strResult = e.getMessage().toString();
e.printStackTrace();
} catch (Exception e) {
strResult = e.getMessage().toString();
e.printStackTrace();
}

// Log.w(TAG, strResult);
LogUtils.getInstance().d(strResult);
return strResult;
}

/**
* 读取数据
*/
private static String convertStreamToString(InputStream is)
{
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
try {
while ((line = reader.readLine()) != null) {
sb.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return sb.toString();
}

}

引用代码

@Override
public Object doInBackground(int loadCode) {
// TODO Auto-generated method stub

List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("xxxx",xxxx));
params.add(new BasicNameValuePair("xxxxx", xxxxx));
params.add(new BasicNameValuePair("xxxxx", xxxxx));

return NetworkUtils.doPost(Constant.HOSTLOGIN, params);
}

@Override
public void doInUI(Object result, int loadCode) {
// TODO Auto-generated method stub
try {
JSONObject json = new JSONObject(result.toString());
if ("0000".equals(json.getString("respCode"))) {
Constant.isLogin=true;
String data=json.getString("respData");
String dataArray[]= data.split(",");
for(int i=0;i<dataArray.length;i++){
String val[]=dataArray[i].split(":");
if(val[0].contains("realName")){
Constant.realName=val[1].replace("\"", "").trim();
}
}


finish();
} else {
Animation shake = AnimationUtils.loadAnimation(LoginActivity.this, R.anim.shake);
account.startAnimation(shake);
Log.e("用户登录数据解析失败");
toast(this, json.getString("respMsg"));
}
} catch (JSONException e) {
e.printStackTrace();
Log.e("用户登录数据解析失败");
toast(this, "用户登录数据解析失败");
}
}

本文转载自：http://www.cnblogs.com/codingmyworld/archive/2011/08/17/2141706.html

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