如何将数据从android应用程序发送到客户端的数据库？

Question

我想订购一些使用android应用程序的项目。我有一个xml文件，在这个xml文件中有一些编辑文本在那里，输入一些文本我想从客户端购买什么项目。然后点击提交按钮。然后将这些项目的详细信息发送到客户端数据库。我如何将这些购买细节发送到客户的数据库？

Answer 1

本教程（最好的），我已经添加了一些具体的代码

链接：http://www.androidhive.info/category/mysql/page/2/

链接：http://www.androidhive.info/2012/05/how-to-connect-android-with-php-mysql/

// URL来创建新的产品 //你必须创建php文件连接服务器和下面的url只是例子

private static String url_create_product = "http://10.0.2.2/html/atm_database`/customers.php"; 

//编辑文本

edittext= (EditText) findViewById(R.id.input1); 
edittext= (EditText) findViewById(R.id.input2); 

// Create按钮

Button sub = (Button) findViewById(R.id.submit); 

sub.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View view) { 

     // write code here to get data from edittext 



      // creating new product in background thread 


      new CreateNewProduct().execute(); 

     } 
    }); 
    } 

/** * 背景异步任务来创建新的产品 * */

class CreateNewProduct extends AsyncTask<String, String,String> { 



     /** 
     * Before starting background thread Show Progress Dialog 
     * */ 

     protected void onPreExecute() { 
      super.onPreExecute(); 
      pDialog = new ProgressDialog(Ac1.this); 
      pDialog.setMessage("Please wait.."); 
      pDialog.setIndeterminate(false); 
      pDialog.setCancelable(true); 
      pDialog.show(); 
     } 

     /** 
     * Log in 
     * */ 

     protected String doInBackground(String... args) { 



      // Building Parameters 
      List<NameValuePair> params = new ArrayList<NameValuePair>();//namevaluepair is a class in apachae for setting name-val parameter 
      params.add(new BasicNameValuePair("id", data1);//BasicNameValuePair is a subclass of NameValuePair is data you have to server 
      params.add(new BasicNameValuePair("pass",data2)); 



      // getting JSON Object 
      // Note that create product url accepts POST method 
      JSONObject json = jsonParser.makeHttpRequest(url_create_product, 
        "POST", params); 

      // check log cat fro response 
      // Log.d("Create Response", json.toString()); 

      // check for success tag 
      try { 
       int success = json.getInt(TAG_SUCCESS); 
       String cust_name=json.getString("name"); 
       String sessid=json.getString("id"); 

       if (success == 1) { 
        // successfully created product 

        //write code to do things getting response from server 

       } else { 


        Log.w("else", "wrong id"); 
        runOnUiThread(new Runnable() { 
          public void run() { 
           Toast.makeText(Ac1.this, "Wrong ID or Password!!", Toast.LENGTH_LONG).show(); 
           } 
          }); 

       } 

      } catch (JSONException e) { 

       e.printStackTrace(); 
      } 

      return null; 
     } 

     /** 
     * After completing background task Dismiss the progress dialog 
     * **/ 
     protected void onPostExecute(String file_url) { 
      // dismiss the dialog once done 
      pDialog.dismiss(); 
     } 

    } 

//类连接服务器

import java.io.BufferedReader; 
import java.io.IOException; 
import java.io.InputStream; 
import java.io.InputStreamReader; 
import java.io.UnsupportedEncodingException; 
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.entity.UrlEncodedFormEntity; 
import org.apache.http.client.methods.HttpGet; 
import org.apache.http.client.methods.HttpPost; 
import org.apache.http.client.utils.URLEncodedUtils; 
import org.apache.http.impl.client.DefaultHttpClient; 
import org.json.JSONException; 
import org.json.JSONObject; 

import android.util.Log; 

public class JSONParser { 

    static InputStream is = null; 
    static JSONObject jObj = null; 
    static String json = ""; 

    // constructor 
    public JSONParser() { 

    } 

    // function get json from url 
    // by making HTTP POST or GET mehtod 
    public JSONObject makeHttpRequest(String url, String method, 
      List<NameValuePair> params) {//JSONObject used to convert one data type to other 

     // Making HTTP request 
     try { 

      // check for request method 
      if(method == "POST"){ 
       // request method is POST 
       // defaultHttpClient 
       DefaultHttpClient httpClient = new DefaultHttpClient(); 
       HttpPost httpPost = new HttpPost(url); 
       httpPost.setEntity(new UrlEncodedFormEntity(params));//UrlEncodedFormEntity-->converts string to encoded string to represent in post method 

       HttpResponse httpResponse = httpClient.execute(httpPost); 
       HttpEntity httpEntity = httpResponse.getEntity(); 
       is = httpEntity.getContent(); 

      }else if(method == "GET"){ 
       // request method is GET 
       DefaultHttpClient httpClient = new DefaultHttpClient(); 
       String paramString = URLEncodedUtils.format(params, "utf-8"); 
       url += "?" + paramString; 
       HttpGet httpGet = new HttpGet(url); 

       HttpResponse httpResponse = httpClient.execute(httpGet); 
       HttpEntity httpEntity = httpResponse.getEntity(); 
       is = httpEntity.getContent();//getContent is used to to extract data frm connection between app and php 
      }   


     } catch (UnsupportedEncodingException e) { 
      e.printStackTrace(); 
     } catch (ClientProtocolException e) {//ClientProtocolException-->error in http protocol 
      e.printStackTrace(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 

     try { 
      BufferedReader reader = new BufferedReader(new InputStreamReader(
        is, "iso-8859-1"), 8); 
      StringBuilder sb = new StringBuilder(); 
      String line = null; 
      while ((line = reader.readLine()) != null) { 
       sb.append(line + "\n"); 
      } 
      is.close(); 
      json = sb.toString(); 
      Log.i("StringBuilder...", json); 
     } catch (Exception e) { 
      Log.e("Buffer Error", "Error converting result " + e.toString()); 
     } 

     // try parse the string to a JSON object 
     try { 
      jObj = new JSONObject(json); 
     } catch (JSONException e) { 
      Log.e("JSON Parserrr", "Error parsing data " + e.toString()); 
     } 

     // return JSON String 
     return jObj; 

    } 
}