我如何连接mysql数据库并使用android代码将数据插入其中

Question

我的托管服务器上有mysql database

在simple android application 我有feedback form 在submit 我想insert data into mysql database 在服务器上。

我tried google 并在solution for local machine 之后发现了这个

如何在没有任何 php 代码的情况下连接到我的托管服务器和 mysql 数据库？

public void insert()
    {
        ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();

    nameValuePairs.add(new BasicNameValuePair("id",id));
    nameValuePairs.add(new BasicNameValuePair("name",name));

        try
        {
        HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("http://10.0.2.2/insert.php");
            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
            HttpResponse response = httpclient.execute(httppost); 
            HttpEntity entity = response.getEntity();
            is = entity.getContent();
            Log.e("pass 1", "connection success ");
    }
        catch(Exception e)
    {
            Log.e("Fail 1", e.toString());
            Toast.makeText(getApplicationContext(), "Invalid IP Address",
            Toast.LENGTH_LONG).show();
    }     

        try
        {
            BufferedReader reader = new BufferedReader
            (new InputStreamReader(is,"iso-8859-1"),8);
            StringBuilder sb = new StringBuilder();
            while ((line = reader.readLine()) != null)
        {
                sb.append(line + "\n");
            }
            is.close();
            result = sb.toString();
        Log.e("pass 2", "connection success ");
    }
        catch(Exception e)
    {
            Log.e("Fail 2", e.toString());
    }     

    try
    {
            JSONObject json_data = new JSONObject(result);
            code=(json_data.getInt("code"));

            if(code==1)
            {
        Toast.makeText(getBaseContext(), "Inserted Successfully",
            Toast.LENGTH_SHORT).show();
            }
            else
            {
         Toast.makeText(getBaseContext(), "Sorry, Try Again",
            Toast.LENGTH_LONG).show();
            }
    }
    catch(Exception e)
    {
            Log.e("Fail 3", e.toString());
    }
    }

Answer 1

这里

HttpPost httppost = new HttpPost("http://10.0.2.2/insert.php");

insert.php 被提到意味着你必须把这个文件放在服务器上

只需将http://10.0.2.2/insert.php 更改为存储文件的服务器文件路径即可

insert.php 的代码

        // this variables is used for connecting to database and server
        $host="yourhost";
        $uname="username";
        $pwd='pass';
        $db="dbname";

        // this is for connecting
        $con = mysql_connect($host,$uname,$pwd) or die("connection failed");
        mysql_select_db($db,$con) or die("db selection failed");

        // getting id and name from the client
         if(isset($_REQUEST)){
        $id=$_REQUEST['id'];
        $name=$_REQUEST['name'];}


       // variable used to tell the client whether data is stored in database or not

        $flag['code']=0;

        // for insertion
        if($r=mysql_query("insert into emp_info values('$name','$id') ",$con))
        {
            //if insertion succeed set code to 1
            $flag['code']=1;
            echo"hi";
        }
        // send result to client that will be 1 or 0
        print(json_encode($flag));

        //close
        mysql_close($con);
    ?>

如您的代码中所述，无论数据是否存储，这都会从服务器获取值，代码 = 1 表示已存储，代码 = 0 表示未存储

 JSONObject json_data = new JSONObject(result);
            code=(json_data.getInt("code"));

            if(code==1)
           {
        Toast.makeText(getBaseContext(), "Inserted Successfully",
            Toast.LENGTH_SHORT).show();
            }
            else
          {
        Toast.makeText(getBaseContext(), "Sorry, Try Again",
            Toast.LENGTH_LONG).show();
            }

Answer 2

package fluent.techno.shreedurgajyotish;

import java.util.ArrayList;

import org.apache.http.NameValuePair;

import org.apache.http.message.BasicNameValuePair;

import org.json.JSONArray;

import org.json.JSONException;

import org.json.JSONObject;

import fluentindia.database.mysql.JsonHelper;

import fluentindia.tech.MenuAdapter.ProductAdapter;

import fluentindia.tech.MenuModel.ProductModel;

import android.app.ProgressDialog;

import android.content.Intent;

import android.net.Uri;

import android.os.AsyncTask;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.view.View.OnClickListener;

import android.widget.AdapterView;

import android.widget.Button;

import android.widget.EditText;

import android.widget.Spinner;

import android.widget.TextView;

import android.widget.Toast;

import android.widget.AdapterView.OnItemSelectedListener;

public class Feedback extends Fragment
{
    Button close,home,btnback,btnsend;

EditText edname,edcompany,edemail,edcontact,edwebsite,edaddress,edcomment;

String  na,con,email,comm,advname,advem,advcontact,nacompany,web,add;

Spinner product;

JsonHelper Jobj;

String WebUrl, UrlImg;

JSONObject obj = null;

String Id,name,em,contact,AdvocateId,city;

ProductAdapter madappppppppppp;

ArrayList<ProductModel> llistttt;

int proid=0;

TextView textViewt2,t1;

public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
}
public View onCreateView(LayoutInflater inflater,ViewGroup container,Bundle savedInstanceState)
{
    View v =inflater.inflate(R.layout.feedback, null);  
    edname = (EditText)v.findViewById(R.id.editname);
    edemail = (EditText)v.findViewById(R.id.editemail);
    edcontact = (EditText)v.findViewById(R.id.editcontact);
    edcomment = (EditText)v.findViewById(R.id.editcomment);
    btnsend = (Button)v.findViewById(R.id.btnsend);
    product = (Spinner)v.findViewById(R.id.editproduct);
    textViewt2 = (TextView)v.findViewById(R.id.textViewt2);
    t1 = (TextView)v.findViewById(R.id.textView1);
    Bundle bung = this.getArguments();
    if(bung!=null)
    {
        proid = bung.getInt("proid");
    }
    if(proid == 0)
    {
    Processtaluka pro = new Processtaluka();
    pro.executeOnExecutor(pro.THREAD_POOL_EXECUTOR, new String[]{"selectdistict.php"});
    }
    else
    {
        Processtaluka pro = new Processtaluka();
        pro.executeOnExecutor(pro.THREAD_POOL_EXECUTOR, new String[]{"selectsingledistict.php?proid="+proid});
    }
    t1.setOnClickListener(new OnClickListener() 
    {
        @Override
        public void onClick(View v) {
             Intent callweb = new Intent(Intent.ACTION_VIEW);
             callweb.setData(Uri.parse("http://pulleycoupling.com/"));
             startActivity(callweb);
        }
    });
    textViewt2.setOnClickListener(new OnClickListener() 
    {
        @Override
        public void onClick(View v) {
             Intent callIntent = new Intent(Intent.ACTION_CALL);
             callIntent.setData(Uri.parse("tel:9824155380"));
             startActivity(callIntent);
        }
    });
    btnsend.setOnClickListener(new OnClickListener()
    {
        @Override
        public void onClick(View v)
        {
            na=edname.getText().toString();
            con=edcontact.getText().toString();
            email=edemail.getText().toString();
            comm = edcomment.getText().toString();
            if(na==null||na==""||na.length()<2)
            {
                edname.setError("Please Enter  Name");
            }
            else if(con == null || con == "" || con.length()<10)
            {
                edcontact.setError("Please Enter Contact");
            }
            else if(email == null || email == "" || email.length()<4)
            {
                edemail.setError("Please Enter Email");
            }
            else if(comm == null || comm== "" || comm.length()<2)
            {
                edcomment.setError("Please Enter Comment");
            }
            else 
            {
                    ProcessInquiry pro = new ProcessInquiry();
                    pro.execute(new String[]{"insertfeedback.php"});
            }
        }
    });
    return v;
}
private class ProcessInquiry extends AsyncTask<String, Void, Boolean>
{
    ProgressDialog dialog = new ProgressDialog(getActivity());
    @Override
    protected void onPreExecute()
    {
        dialog.setMessage("Please Wait Feedback send..");
        dialog.show();
    }
    @Override
    protected Boolean doInBackground(String... Url) 
    {
        for(String Url1 : Url)
        {
            try
            {
                Jobj = new JsonHelper();
                ArrayList<NameValuePair> pair = new ArrayList<NameValuePair>();
                pair.add(new BasicNameValuePair("name", na));
                pair.add(new BasicNameValuePair("contact", con));
                pair.add(new BasicNameValuePair("email", email));
                pair.add(new BasicNameValuePair("comment", comm));
                pair.add(new BasicNameValuePair("product", city));
                Jobj.MakeJsonCall(Url1, 2, pair);
                Log.e("Url", Url1);
                return true;
            }
            catch (Exception e)
            {
                return false;
            }
        }
        return true;
    }
    @Override
    protected void onPostExecute(Boolean result)
    {
        if(result==true)
        {
            Toast.makeText(getActivity(), "Feedback Send Sucessfully", 1000).show();

                Intent i=new Intent(getActivity(),FragmentMaster.class);
                i.putExtra("frgNo", "0");
                startActivity(i);

            edname.setText("");
            edcomment.setText("");
            edcontact.setText("");
            edemail.setText("");
        }
        dialog.dismiss();
    }
}
private class Processtaluka extends AsyncTask<String, Void, Boolean>
{
    @Override
    protected void onPreExecute()
    {
    }
    @Override
    protected Boolean doInBackground(String... Url) 
    {
        for(String Url1 : Url)
        {
                Jobj = new JsonHelper();
                obj = Jobj.MakeJsonCall(Url1, 2);
                try 
                {
                    llistttt = new ArrayList<ProductModel>();
                    JSONArray JArr = obj.getJSONArray("record");
                    if(proid == 0)
                    {
                    }
                    else
                    {
                    }
                    for(int i=0;i<JArr.length();i++)
                    {
                        JSONObject dObj = JArr.getJSONObject(i);
                        llistttt.add(new ProductModel( dObj.getString("sub_id"), dObj.getString("sub_name")));
                    }
                } 
                catch (JSONException e) 
                {
                    e.printStackTrace();
                }
                return true;
            }
        return true;
    }
    @Override
    protected void onPostExecute(Boolean result)
    {
        madappppppppppp = new ProductAdapter(getActivity(),llistttt);
        product.setAdapter(madappppppppppp);
        product.setPrompt("Select The Service You Want");
        product.setOnItemSelectedListener(new OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int arg2, long arg3) {

                 city= llistttt.get(arg2).getSubname();
            }
            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
            }
        });
    }
  }
}