安卓学习--http请求

package cn.xm.hostrequest.biz;

import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.Header;
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 android.content.Context;
import android.widget.Toast;
import cn.xm.hostrequest.tools.StreamTools;

import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;

public class LoginService {

	public static boolean loginByGet(String path, String username,
			String password) {
		try {
			URL url = new URL(path + "?user="
					+ URLEncoder.encode(username, "utf-8") + "&pwd="
					+ URLEncoder.encode(password, "utf-8"));

			HttpURLConnection conn = (HttpURLConnection) url.openConnection();
			conn.setRequestMethod("GET");
			conn.setConnectTimeout(5000);

			int code = conn.getResponseCode();
			if (code == 200) {
				String response = StreamTools.readInputInputStream(conn
						.getInputStream());
				if (response != null && response.equals("true")) {

					return true;
				}

			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return false;
	}

	public static boolean loginByPost(String path, String username,
			String password) {
		try {
			// 创建 url
			URL url = new URL(path);
			// 利用 url打开连接
			HttpURLConnection conn = (HttpURLConnection) url.openConnection();
			// 设置 请求参数
			conn.setRequestMethod("POST"); // post 请求
			conn.setConnectTimeout(5000); // 连接超时时间
			conn.setDoOutput(true); // 充许写出输出流到 服务器
			// 拼装 post请求的数据
			String data = "user=" + URLEncoder.encode(username, "utf-8")
					+ "&pwd=" + URLEncoder.encode(password, "utf-8");
			// 设置 消息头
			conn.addRequestProperty("Content-Type",
					"application/x-www-form-urlencoded");
			// 设置数据长度
			conn.addRequestProperty("Content-Length", data.length() + "");
			// 取输出流 并写入数据
			OutputStream os = conn.getOutputStream();
			os.write(data.getBytes());
			// 执行请求 并取响应码
			int code = conn.getResponseCode();
			if (code == 200) {
				String response = StreamTools.readInputInputStream(conn
						.getInputStream());
				if (response != null && response.equals("true")) {

					return true;
				}

			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return false;
	}

	public static boolean loginByClientPost(String path, String username,
			String password) {
		try {
			// 打开 httpClient == 打开浏览器
			HttpClient client = new DefaultHttpClient();
			// 设置 要 访问的 url == form 中的 action
			HttpPost post = new HttpPost(path);
			// 创建 post 数据 == form 中填写的数据
			List<NameValuePair> parameters = new ArrayList<NameValuePair>(0);
			parameters.add(new BasicNameValuePair("user", username));
			parameters.add(new BasicNameValuePair("pwd", password));
			// 设置数据
			post.setEntity(new UrlEncodedFormEntity(parameters, "utf-8"));
			// 发送请求并得到响应
			HttpResponse response = client.execute(post);
			// 获取响应码
			int code = response.getStatusLine().getStatusCode();
			if (code == 200) {
				String text = StreamTools.readInputInputStream(response
						.getEntity().getContent());
				if (text != null && text.equals("true")) {
					return true;
				}

			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return false;
	}

	public static boolean loginByClientGet(String path, String username,
			String password) {
		try {
			// 打开httpclient==打开浏览器
			HttpClient client = new DefaultHttpClient();
			// 生成 要访问的 url == 输入地址
			HttpGet httpGet = new HttpGet(path);
			// 发送请求 == 敲回车
			HttpResponse response = client.execute(httpGet);
			// 取状态码
			int code = response.getStatusLine().getStatusCode();
			if (code == 200) {
				String text = StreamTools.readInputInputStream(response
						.getEntity().getContent());
				if (text != null && text.equals("true")) {
					return true;
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return false;
	}

	public static void loginByAsyncGet(final Context context, String path,
			String username, String password) {
		AsyncHttpClient client = new AsyncHttpClient();
		client.get(path + "?user=" + username + "&pwd=" + password,
				new AsyncHttpResponseHandler() {
					@Override
					public void onSuccess(int statusCode, Header[] headers,
							byte[] responseBody) {
						String text = new String(responseBody);
						if ("true".equals(text)) {
							Toast.makeText(context, "登陆成功", 0).show();
						} else {
							Toast.makeText(context, "登陆失败", 0).show();
						}

					}

					@Override
					public void onFailure(int statusCode, Header[] headers,
							byte[] responseBody, Throwable error) {
						Toast.makeText(context, "登陆失败", 0).show();
					}
				});
	}

	public static void loginByAsyncPost(final Context context, String path,
			String username, String password) {
		AsyncHttpClient client = new AsyncHttpClient();
		RequestParams parm = new RequestParams();
		parm.put("user", username);
		parm.put("pwd", password);
		client.post(path, parm, new AsyncHttpResponseHandler() {

			@Override
			public void onSuccess(int statusCode, Header[] headers,
					byte[] responseBody) {
				String text = new String(responseBody);
				if ("true".equals(text)) {
					Toast.makeText(context, "登陆成功", 0).show();
				} else {
					Toast.makeText(context, "登陆失败", 0).show();
				}

			}

			@Override
			public void onFailure(int statusCode, Header[] headers,
					byte[] responseBody, Throwable error) {
				Toast.makeText(context, "登陆失败", 0).show();
			}
		});
	}

}