HttpClient

package com.ch.day5_httpclient;

import java.util.List;

import com.ch.myutils.NetWorkUtil;
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;

import android.os.Bundle;
import android.os.Handler;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {
    private EditText username;
    private EditText userpass;
    private Button login;
    Context mcontext;
    
    Handler h = new Handler(){
        public void handleMessage(android.os.Message msg) {
            if(msg.what == 1){
                if(msg.obj.equals("success")){
                    //跳轉
                    Intent it = new Intent(mcontext,BaseActivity.class);
                    startActivity(it);
                }else{
                    Toast.makeText(mcontext, "post請求，帳號不對", 0).show();
                }
            }else if(msg.what == 2){
                Toast.makeText(mcontext, (String)msg.obj,0).show();
                if(msg.obj.equals("成功")){
                    //跳轉
                    Intent it = new Intent(mcontext,BaseActivity.class);
                    startActivity(it);
                }else{
                    Toast.makeText(mcontext, "post請求，帳號不對", 0).show();
                }
            }
        };
    };
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mcontext = MainActivity.this;
        init();
    }
    
    public void init(){
        username = (EditText) findViewById(R.id.username);
        userpass = (EditText) findViewById(R.id.userpass);
        login = (Button) findViewById(R.id.login);
        
        login.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View arg0) {
                //獲得登錄xinix
                final String nameValue = username.getText().toString();
                final String passValue = userpass.getText().toString();
                if(nameValue != null && nameValue != "" && passValue != null && passValue != ""){
                    //判斷網絡是否開通
                    if(NetWorkUtil.isNetAvailable(mcontext)){//爲真，表示網絡開通
                        //獲得服務器請求登錄，經過線程
                        new Thread(){
                            public void run() {
                                //請求服務器
//                                String rs =
//                                        NetWorkUtil.loginCheck_Get_HttpClient(nameValue, passValue, NetWorkUtil.LOGIN_URL);
//                                h.sendMessage(h.obtainMessage(1, rs));
                                String rs =
                                        NetWorkUtil.loginCheck_POST_HttpClient(nameValue, passValue, NetWorkUtil.LOGIN_URL);
                                h.sendMessage(h.obtainMessage(2, rs));
                            };
                        }.start();
                        
                    }
                    
                }else{
                    Toast.makeText(mcontext, "請完整輸入帳號信息", 0).show();
                }
            }
        });
    }

 

}

 

 

 

 

///////////////////////////////////////////////////////////////////////////////////

package com.ch.myutils;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
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;
package com.ch.myutils;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
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.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.util.EntityUtils;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

public class NetWorkUtil {
    public static final String LOGIN_URL = "http://101.200.142.201:8080/tqyb/login";
    public static boolean isNetAvailable(Context context){
        //得到網絡管理器
        ConnectivityManager connM =
                (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo netInfo = connM.getActiveNetworkInfo();//獲得網絡詳情
        
        if(netInfo == null || !netInfo.isAvailable())
            return false;
        
        return true;
    }
    
    public static String loginCheck_Get_HttpClient(String name,String pass,String url){
        //經過StringBuffer來加工url
        StringBuffer sb = new StringBuffer(url);
        sb.append("?username=");
        sb.append(name);
        sb.append("&userpass=");
        sb.append(pass);
        
        String result = "";
        
        HttpGet get = new HttpGet(sb.toString());//建立httpClient的get請求對象
        //設置請求參數
        HttpParams params = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(params, 5*1000);
        HttpConnectionParams.setSoTimeout(params, 5*1000);
        
        HttpClient client = new DefaultHttpClient(params);//建立HttpClient對象
        
        try {
            HttpResponse res = client.execute(get);//執行請求，得到結果
            if(res.getStatusLine().getStatusCode() == 200){
                HttpEntity entity = res.getEntity();//得到相應結果，是一個HttpEntity對象
                result = EntityUtils.toString(entity, "utf-8");//轉換爲字符串
            }
        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return result;
        
    }
    
    public static String loginCheck_POST_HttpClient(String name,String pass,String url){
        String result = "";
        
        HttpPost post = new HttpPost(url);//建立httpClient的post請求對象
        //設置請求參數
        HttpParams params = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(params, 5*1000);
        HttpConnectionParams.setSoTimeout(params, 5*1000);
        //傳值
        //建立List集合，存放向服務器傳遞的數據
        List<NameValuePair> reqData = new ArrayList<NameValuePair>();
        NameValuePair p1 = new BasicNameValuePair("username", name);
        NameValuePair p2 = new BasicNameValuePair("userpass", pass);
        reqData.add(p1);
        reqData.add(p2);
        
        try {
            HttpEntity entity = new UrlEncodedFormEntity(reqData, "utf-8");
            post.setEntity(entity);//給post請求對象，設置上傳的數據
            HttpClient client = new DefaultHttpClient(params);//建立HttpClient對象
            HttpResponse res = client.execute(post);//執行post請求，得到結果
            if(res.getStatusLine().getStatusCode() == 200){
                HttpEntity resEntity = res.getEntity();//得到相應結果，是一個HttpEntity對象
                result = EntityUtils.toString(resEntity, "utf-8");//轉換爲字符串
            }
        } catch (UnsupportedEncodingException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        
        return result;
        
    }
    
    
}