android http请求

1.使用的类

           HttpGet  代表http的Get请求对象

           HttpPost 代表http的Post请求对象

           HttpClient http服务客户端,相当于浏览器

2封装类

public class AndroidNetRequestUtil {
	public InputStream sendGetRequest(String url,Map<String, String> params,String encode) throws Exception{
		StringBuilder requestpath=new StringBuilder(url);
		requestpath.append('?');
		if(params!=null){
			for (Map.Entry<String, String> entry : params.entrySet()) {
				requestpath.append(entry.getKey()).append('=').append(URLEncoder.encode(entry.getValue(), encode)).append('&');
			}
		}
		HttpGet get=new HttpGet(requestpath.toString());
		HttpClient client=new DefaultHttpClient();
		HttpResponse response=client.execute(get);//获得服务器的响应
		InputStream stream=response.getEntity().getContent();//获得响应的内容
		return stream;
	}
	public InputStream sendPostRequest(String url,Map<String, String> params,String encode) throws Exception{
		List<NameValuePair> pairs=new ArrayList<NameValuePair>();
		for (Map.Entry<String, String> entry : params.entrySet()) {
			String value=URLEncoder.encode(entry.getValue(),encode);
			NameValuePair pair=new BasicNameValuePair(entry.getValue(),value);
			pairs.add(pair);
		}
		HttpEntity entity=new UrlEncodedFormEntity(pairs);
                HttpPost post=new HttpPost(url);
                post.setEntity(entity);
		InputStream stream=post.getEntity().getContent();
		return stream;
	}
	
}