Android利用HttpClient和Post与Get请求与服务器交互

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代码如下：

import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
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.impl.client.DefaultHttpClient;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.List;
public class HttpUtils {
    /**
     *
     * @param url地址
     * @return 返回网页内容
     * @throws Exception
     */
    public static String get(String url) throws Exception {
        HttpClient client = new DefaultHttpClient();
        HttpGet get = new HttpGet(url);
        HttpResponse response = client.execute(get);
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                    response.getEntity().getContent()));
        String resStr = "";
        for (String s = reader.readLine(); s != null; s = reader.readLine()) {
            resStr += s;
        }
        return resStr;
    }
    /**
     *
     * @param url 网页地址
     * @param params 参数
     * @return 返回网页内容
     * @throws Exception
     */
    public static String post(String url, List<NameValuePair> params)
        throws Exception {
        String response = null;
        HttpClient httpclient = new DefaultHttpClient();
        // 创建HttpPost对象
        HttpPost httppost = new HttpPost(url);
        try {
            // 设置httpPost请求参数，设置字符集
            httppost.setEntity(new UrlEncodedFormEntity(params, HTTP.UTF_8));
            // 使用execute方法发送HTTP Post请求，并返回HttpResponse对象
            HttpResponse httpResponse = httpclient.execute(httppost);
            int statusCode = httpResponse.getStatusLine().getStatusCode();
            if (statusCode == HttpStatus.SC_OK) {
                // 获得返回结果
                response = EntityUtils.toString(httpResponse.getEntity());
            } else {
                response = "请求错误，返回码：" + statusCode;
            }
        } catch (Exception e) {
            e.getMessage();
        }
        return response;
    }
}

测试：

String data;

Gett方式
data =
HttpUtils.get("http://10.0.2.2:8080/Auction/LoginAction.action?username="+
username + "&password=" + password + "");

Post方式
   List<NameValuePair> params = new ArrayList<NameValuePair>();
   params.add(new BasicNameValuePair("username", username));
   params.add(new BasicNameValuePair("password", password));
   data = HttpUtils.post(
   "http://10.0.2.2:8080/Auction/LoginAction.action",
   params);   如有大家有什么问题，可以给我留言，我会抽时间一一解答。 笔者微博：@LeaveBugsAway欢迎叨扰。