HttpClientPostActivity

package com.example.homework6.internet;

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

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
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.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 com.alibaba.fastjson.JSON;
import com.example.homework6.R;
import com.example.homework6.R.id;
import com.example.homework6.R.layout;
import com.example.homework6.bean.Cai;

import android.os.AsyncTask;
import android.os.Bundle;
import android.widget.TextView;
import android.app.Activity;
public class HttpClientPostActivity extends Activity {

    private TextView textl;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        MyAsyncTask myAsyncTask=new MyAsyncTask();
        myAsyncTask.execute("http://apis.juhe.cn/cook/query?"
                ,"a8cceb02be610927c66a843b6b1421d0","西红柿","10","3");
        textl=(TextView) findViewById(R.id.tv_title);
    }
    class MyAsyncTask extends AsyncTask<String, Integer, String>{
        private String string;
        @Override
        protected String doInBackground(String... params) {
            try {
                HttpPost httpPost=new HttpPost(params[0]);
                HttpParams httpParams=new BasicHttpParams();
                HttpConnectionParams.setConnectionTimeout(httpParams, 5000);
                HttpConnectionParams.setSoTimeout(httpParams, 5000);
                ArrayList<BasicNameValuePair> list=new ArrayList<BasicNameValuePair>();
                list.add(new BasicNameValuePair("key", params[1]));
                list.add(new BasicNameValuePair("menu", params[2]));
                list.add(new BasicNameValuePair("rn", params[3]));
                list.add(new BasicNameValuePair("pn", params[4]));
                HttpEntity httpEntity=new UrlEncodedFormEntity(list, "utf-8");
                httpPost.setEntity(httpEntity);
                HttpClient httpClient=new DefaultHttpClient(httpParams);
                HttpResponse execute = httpClient.execute(httpPost);
                if (execute.getStatusLine().getStatusCode()==200) {
                    HttpEntity entity = execute.getEntity();
                    string = EntityUtils.toString(entity, "utf-8");
                }
            } catch (UnsupportedEncodingException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (ClientProtocolException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            return string;
        }
        @Override
        protected void onPostExecute(String result) {
            Cai c=JSON.parseObject(result, Cai.class);
            textl.setText(c.toString());
        }
    }
}