HttpClient用法

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;
    }
}

转自：http://blog.csdn.net/litton_van/article/details/6544086