Android,HTTP请求类

package com.huahui.uiles;

import java.util.ArrayList;

import java.util.List;

import java.util.Map;

import org.apache.http.HttpResponse;

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.message.BasicNameValuePair;

import org.apache.http.util.EntityUtils;

/**

 * Http请求工具类

 * 

 * @author 刘宇

 * @date 2014-4-26

 */

public class HttpUtil {

    // 创建httpClient对象

    public static HttpClient httpClient = new DefaultHttpClient();

    /**

     * 

     * @param url

     *            发送请求的URL

     * @return 服务器响应字符串

     * @throws Exception

     */

    public static String getRequest(String url) throws Exception {

        HttpGet get = new HttpGet(url);

        HttpResponse httpResponse = httpClient.execute(get);

        if (httpResponse.getStatusLine().getStatusCode() == 200) {

            String result = EntityUtils.toString(httpResponse.getEntity());

            return result;

        }

        return "HttpGet请求错误代码：" + httpResponse.getStatusLine().getStatusCode();

    }

    /**

     * 

     * @param url

     *            发送请求URL

     * @param paramsMap

     *            请求参数 这是null则不向服务器提交数据

     * @return 服务器响应值

     * @throws Exception

     */

    public static String postRequest(String url, Map<String, String> paramsMap)

            throws Exception {

        // 创建HttpPost对象

        HttpPost post = new HttpPost(url);

        // 如果穿的参数个数较多，可以对传递的参数进行封装

        List<NameValuePair> paramsList = new ArrayList<NameValuePair>();

        for (String key : paramsMap.keySet()) {

            // 封装请求参数

            paramsList.add(new BasicNameValuePair(key, paramsMap.get(key)));

        }

        // 设置请求参数

        post.setEntity(new UrlEncodedFormEntity(paramsList, "UTF-8"));

        post.addHeader("Accept", "text/json");

        // 发送post请求

        HttpResponse httpResponse = httpClient.execute(post);

        // 如果成功返回

        if (httpResponse.getStatusLine().getStatusCode() == 200) {

            // 获取响应字符串

            String result = EntityUtils.toString(httpResponse.getEntity());

            return result;

        }

        return "HttpPost请求错误代码：" + httpResponse.getStatusLine().getStatusCode();

    }

}