Android用连接网络或是一些API接口得用的 Post Get 示例

本文出自：http://blog.youkuaiyun.com/firewings_r/article/details/5374851

package alex.reader.ebook.bam;

import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.params.HttpClientParams;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.EditText;

public class SimpleClient extends Activity {

private HttpParams httpParams;

private HttpClient httpClient;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.simple_client);

EditText editText = (EditText) this.findViewById(R.id.EditText01);

List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("email", "firewings.r@gmail.com"));
params.add(new BasicNameValuePair("password", "954619"));
params.add(new BasicNameValuePair("remember", "1"));
params.add(new BasicNameValuePair("from", "kx"));
params.add(new BasicNameValuePair("login", "登 录"));
params.add(new BasicNameValuePair("refcode", ""));
params.add(new BasicNameValuePair("refuid", "0"));

Map params2 = new HashMap();

params2.put("hl", "zh-CN");

params2.put("source", "hp");

params2.put("q", "haha");

params2.put("aq", "f");

params2.put("aqi", "g10");

params2.put("aql", "");

params2.put("oq", "");

String url2 = "http://www.google.cn/search";

String url = "http://wap.kaixin001.com/home/";

getHttpClient();

editText.setText(doPost(url, params));

// editText.setText(doGet(url2, params2));

}

public String doGet(String url, Map params) {

/* 建立HTTPGet对象 */

String paramStr = "";

Iterator iter = params.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry entry = (Map.Entry) iter.next();
Object key = entry.getKey();
Object val = entry.getValue();
paramStr += paramStr = "&" + key + "=" + val;
}

if (!paramStr.equals("")) {
paramStr = paramStr.replaceFirst("&", "?");
url += paramStr;
}
HttpGet httpRequest = new HttpGet(url);

String strResult = "doGetError";

try {

/* 发送请求并等待响应 */
HttpResponse httpResponse = httpClient.execute(httpRequest);
/* 若状态码为200 ok */
if (httpResponse.getStatusLine().getStatusCode() == 200) {
/* 读返回数据 */
strResult = EntityUtils.toString(httpResponse.getEntity());

} else {
strResult = "Error Response: "
+ httpResponse.getStatusLine().toString();
}
} 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.v("strResult", strResult);

return strResult;
}

public String doPost(String url, List<NameValuePair> params) {

/* 建立HTTPPost对象 */
HttpPost httpRequest = new HttpPost(url);

String strResult = "doPostError";

try {
/* 添加请求参数到请求对象 */
httpRequest.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
/* 发送请求并等待响应 */
HttpResponse httpResponse = httpClient.execute(httpRequest);
/* 若状态码为200 ok */
if (httpResponse.getStatusLine().getStatusCode() == 200) {
/* 读返回数据 */
strResult = EntityUtils.toString(httpResponse.getEntity());

} else {
strResult = "Error Response: "
+ httpResponse.getStatusLine().toString();
}
} 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.v("strResult", strResult);

return strResult;
}

public HttpClient getHttpClient() {

// 创建 HttpParams 以用来设置 HTTP 参数（这一部分不是必需的）

this.httpParams = new BasicHttpParams();

// 设置连接超时和 Socket 超时，以及 Socket 缓存大小

HttpConnectionParams.setConnectionTimeout(httpParams, 20 * 1000);

HttpConnectionParams.setSoTimeout(httpParams, 20 * 1000);

HttpConnectionParams.setSocketBufferSize(httpParams, 8192);

// 设置重定向，缺省为 true
HttpClientParams.setRedirecting(httpParams, true);
// 设置 user agent

String userAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.2) Gecko/20100115 Firefox/3.6";
HttpProtocolParams.setUserAgent(httpParams, userAgent);

// 创建一个 HttpClient 实例

// 注意 HttpClient httpClient = new HttpClient(); 是Commons HttpClient

// 中的用法，在 Android 1.5 中我们需要使用 Apache 的缺省实现 DefaultHttpClient

httpClient = new DefaultHttpClient(httpParams);

return httpClient;
}
}