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!");
		}
	}

}