Android HttpClient网络通信

封装Get/Post两种提交的方法类，
HttpUtil.java类:

package com.water.activity;

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

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
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.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.params.CoreConnectionPNames;
import org.apache.http.util.EntityUtils;

public class HttpUtil {

  /**
   * http访问数据，默认返回的数据为UTF-8编码
   * 
   * @param url
   *            url地址
   * @param method
   *            提交方式
   * @return
   * @throws IOException
   */
  public static String getUrl(String url) throws IOException {
    HttpGet request = new HttpGet(url);
    HttpClient httpClient = new DefaultHttpClient();
    HttpResponse response = httpClient.execute(request);
    if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
      return EntityUtils.toString(response.getEntity());
    } else {
      return "";
    }
  }

  /**
   * post提交数据
   * 
   * @param url
   *            提交地址
   * @param params
   *            参数
   * @return
   * @throws ClientProtocolException
   * @throws IOException
   */
  public static String postUrl(String url, Map<String, String> params)
      throws ClientProtocolException, IOException {
    return postUrl(url, params, "UTF-8");
  }

  /**
   * post提交数据
   * 
   * @param url
   *            提交地址
   * @param params
   *            参数
   * @param encoding
   *            参数编码
   * @return
   * @throws ClientProtocolException
   * @throws IOException
   */
  public static String postUrl(String url, Map<String, String> params,
      String encoding) throws ClientProtocolException, IOException {
    List<NameValuePair> param = new ArrayList<NameValuePair>(); // 参数
    // param.add(new BasicNameValuePair("par", "request-post"));
    // //这个参数我不知道是不是非要加这个

    // 添加参数
    Iterator<Entry<String, String>> iterator = params.entrySet().iterator();
    while (iterator.hasNext()) {
      Entry<String, String> entry = iterator.next();

      param.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
    }

    HttpPost request = new HttpPost(url);
    HttpEntity entity = new UrlEncodedFormEntity(param, encoding);
    request.setEntity(entity);

    HttpClient client = new DefaultHttpClient();
    client.getParams().setParameter(
        CoreConnectionPNames.CONNECTION_TIMEOUT, 10000); // 设置请求超时时间
    client.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 10000); // 读取超时

    HttpResponse response = client.execute(request);
    if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
      return EntityUtils.toString(response.getEntity());
    } else {
      return null;
    }
  }

}

MyList.java类:

package com.water.activity;

import java.util.HashMap;
import java.util.Map;

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

public class MyList extends Activity {

  private EditText editView;

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

    try {
      Map map = new HashMap<String, String>();
      map.put("name", "name");
      map.put("password", "password");

      String content = HttpUtil.postUrl("http://www.163.com", map);
      if (content == null) {
        Log.i("MyList", "返回值有问题!");
      } else {
        Log.i("MyList", content);
      }
    } catch (Exception e) {
      Log.i("MyList", "运行出错!");
    }
  }

}