android中HttpClient的应用（POST方法）

首先在http://hc.apache.org/downloads.cgi下载HttpClient包
直接看代码
  1 import android.os.Handler;
  2 import android.os.Message;
  3 import android.support.v7.app.AppCompatActivity;
  4 import android.os.Bundle;
  5 import android.util.Log;
  6 import android.view.View;
  7 import android.widget.TextView;
  8 
  9 import com.google.gson.Gson;
 10 import com.google.gson.reflect.TypeToken;
 11 
 12 import org.apache.http.HttpEntity;
 13 import org.apache.http.HttpResponse;
 14 import org.apache.http.HttpStatus;
 15 import org.apache.http.NameValuePair;
 16 import org.apache.http.client.ClientProtocolException;
 17 import org.apache.http.client.HttpClient;
 18 import org.apache.http.client.entity.UrlEncodedFormEntity;
 19 import org.apache.http.client.methods.HttpGet;
 20 import org.apache.http.client.methods.HttpPost;
 21 import org.apache.http.client.utils.URLEncodedUtils;
 22 import org.apache.http.impl.client.DefaultHttpClient;
 23 import org.apache.http.message.BasicNameValuePair;
 24 import org.apache.http.protocol.HTTP;
 25 import org.apache.http.util.EntityUtils;
 26 
 27 import java.io.IOException;
 28 import java.io.UnsupportedEncodingException;
 29 import java.lang.reflect.Type;
 30 import java.util.ArrayList;
 31 import java.util.LinkedList;
 32 import java.util.List;
 33 
 34 public class MainActivity extends AppCompatActivity {
 35 
 36     @Override
 37     protected void onCreate(Bundle savedInstanceState) {
 38         super.onCreate(savedInstanceState);
 39         setContentView(R.layout.activity_main);
 40         // 开启一个子线程，进行网络操作，等待有返回结果，使用handler通知UI
 41         new Thread(networkTask).start();
 42 
 43     }
 44 
 45     Handler handler = new Handler() {
 46         @Override
 47         public void handleMessage(Message msg) {
 48             super.handleMessage(msg);
 49             Bundle data = msg.getData();
 50             String val = data.getString("value");
 51             Log.i("mylog", "请求结果为-->" + val);
 52             // TODO
 53             // UI界面的更新等相关操作
 54         }
 55     };
 56 
 57     /**
 58      * 网络操作相关的子线程
 59      */
 60     Runnable networkTask = new Runnable() {
 61         @Override
 62         public void run() {
 63             // TODO
 64             // 在这里进行 http request.网络请求相关操作
 65             String TAG = "ABC";
 66 
 67             //baseUrl
 68             String url = "http://192.168.8.7/insert.php";
 69 
 70             HttpPost request = new HttpPost(url);
 71 
 72             //先将参数放入List，再对参数进行URL编码
 73             List<BasicNameValuePair> params = new LinkedList<BasicNameValuePair>();
 74             params.add(new BasicNameValuePair("firstname", "这个是安卓"));
 75             params.add(new BasicNameValuePair("lastname", "这是安卓加进去的"));
 76             params.add(new BasicNameValuePair("age", "66"));
 77 
 78             try {
 79                 HttpEntity entity = new UrlEncodedFormEntity(params, "UTF-8");
 80 
 81                 request.setEntity(entity);
 82 
 83                 HttpClient client = new DefaultHttpClient();
 84 
 85                 HttpResponse response = client.execute(request);
 86 
 87                 Log.e(TAG, "Response Code: " +
 88                         response.getStatusLine().getStatusCode());
 89 
 90                 if(response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
 91 
 92                     String data = EntityUtils.toString(response.getEntity());
 93 
 94                 }
 95             } catch (IOException e) {
 96                 Log.e(TAG, "~~~~~~"+e);
 97                 e.printStackTrace();
 98             }
 99             Message msg = new Message();
100             Bundle data = new Bundle();
101             data.putString("value", "请求结果");
102             msg.setData(data);
103             handler.sendMessage(msg);
104         }
105     }
106 }
需要注意的是http请求在安卓3.0后就不能放在MainTread中了