package mydemo.mycom.demo2.service;

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 java.io.InputStream;

import java.io.OutputStream;

import java.net.HttpURLConnection;

import java.net.URL;

import java.util.ArrayList;

import java.util.List;

import mydemo.mycom.demo2.utils.StreamTools;

/**

 * Created by Administrator on 2015/5/20.

 */

public class NetService {

    //使用URL的Get 方式请求服务器

    public static String loginByGet(String username, String password) {

        try {

            String path = "http://192.168.1.110:1010/UserInfo/Login?username=" + username + "&password=" + password;

            URL url = new URL(path);

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setConnectTimeout(5000);

            conn.setRequestMethod("GET");

            int code = conn.getResponseCode();

            if (code == 200) {

                //请求成功

                InputStream is = conn.getInputStream();

                String result = StreamTools.readInputStream(is);

                return result;

            } else {

                //请求失败

                return null;

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return null;

    }

    //使用URL的Post 方式请求服务器

    public static String loginByPost(String username, String password) {

        try {

            String path = "http://192.168.1.110:1010/UserInfo/Login";

            URL url = new URL(path);

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setConnectTimeout(5000);

            conn.setRequestMethod("POST");

            String data = "username=" + username + "&password=" + password;

            conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

            conn.setRequestProperty("Content-Length", data.length() + "");

            //post 的方式 实际上是浏览器把数据 写给了服务器

            conn.setDoInput(true);

            OutputStream os = conn.getOutputStream();

            os.write(data.getBytes());

            int code = conn.getResponseCode();

            if (code == 200) {

                //请求成功

                InputStream is = conn.getInputStream();

                String result = StreamTools.readInputStream(is);

                return result;

            } else {

                //请求失败

                return null;

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return null;

    }

    //使用HttpClient的Get 方式请求服务器 （HttpClient 过时）

    public static String loginByClientGet(String username, String password) {

        try {

            HttpClient client = new DefaultHttpClient();

            String path = "http://192.168.1.110:1010/UserInfo/Login?username=" + username + "&password=" + password;

            HttpGet httpget = new HttpGet(path);

            HttpResponse response = client.execute(httpget);

            int code = response.getStatusLine().getStatusCode();

            if (code == 200) {

                //请求成功

                InputStream is = response.getEntity().getContent();

                String result = StreamTools.readInputStream(is);

                return result;

            } else {

                //请求失败

                return null;

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return null;

    }

    //使用HttpClient的Post 方式请求服务器 （HttpClient 过时）

    public static String loginByClientPost(String username, String password) {

        try {

            HttpClient client = new DefaultHttpClient();

            String path = "http://192.168.1.110:1010/UserInfo/Login";

            HttpPost httppost = new HttpPost(path);

            //指定要提交的数据实体

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

            list.add(new BasicNameValuePair("username", username));

            list.add(new BasicNameValuePair("password", password));

            httppost.setEntity(new UrlEncodedFormEntity(list, "UTF_8"));

            HttpResponse response = client.execute(httppost);

            int code = response.getStatusLine().getStatusCode();

            if (code == 200) {

                //请求成功

                InputStream is = response.getEntity().getContent();

                String result = StreamTools.readInputStream(is);

                return result;

            } else {

                //请求失败

                return null;

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return null;

    }

}

package mydemo.mycom.demo2.utils;

import java.io.ByteArrayOutputStream;

import java.io.InputStream;

public class StreamTools {

    //InputStream 转为 String

    public static String readInputStream(InputStream is)

    {

        try

        {

            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            int len =0;

            byte[] buffer = new byte[1024];

            while((len=is.read(buffer))!=-1)

            {

                baos.write(buffer,0,len);

            }

            is.close();

            baos.close();

            byte[] result = baos.toByteArray();

            String temp = new String(result);

            return temp;

        }catch (Exception e)

        {

            e.printStackTrace();

            return null;

        }

    }

}