用户输入未在sql数据库上更新，日志聊天中没有错误

Question

当我尝试将输入数据更新到我的SQL数据库时，没有任何反应。我已经尝试了很长一段时间，不幸的是当我点击保存按钮时没有任何反应。我不知道我哪里出错了，因为遗憾的是，日志聊天中没有任何内容。

如果没有错误，不知道如何检查。在下面找到我的代码和PHP。我的Fineappl和类别EditText字段未由用户填写。如果代码接受速度并决定超速费用，它们会根据if else自动填充。

创建php

<?php


// array for JSON response
$response = array();

// check for required fields
if (isset($_POST['driver']) && 
    isset($_POST['licencenum']) &&
    isset($_POST['officer']) && 
    isset($_POST['speed'] &&  
    isset($_POST['fine']) && 
    isset($_POST['category']))
{

    $driver = $_POST['driver'];
    $licencenum = $_POST['licencenum'];
    $officer = $_POST['officer'];
    $speed = $_POST['speed'];
    $fine = $_POST['fine'];
    $category = $_POST['category'];


    // include db connect class
    require_once __DIR__ . '/db_connect.php';

    // connecting to db
    $db = new DB_CONNECT();

    // mysql inserting a new row
    $result = mysql_query("INSERT INTO fineregister
                          (driver,licencenum,officer,speed,fine,category)
                      VALUES('$driver', 
                             '$licencenum',
                             '$officer',
                             '$speed',
                             '$fine',
                             '$category')");

    // check if row inserted or not
    if ($result) {
        // successfully inserted into database
        $response["success"] = 1;
        $response["message"] = "Speed Ticket Successfully Registered.";

        // echoing JSON response
        echo json_encode($response);
    } else {
        // failed to insert row
        $response["success"] = 0;
        $response["message"] = "Oops! An error occurred.";

        // echoing JSON response
        echo json_encode($response);
    }
 } else {
    // required field is missing
    $response["success"] = 0;
    $response["message"] = "Required field(s) is missing";

    // echoing JSON response
    echo json_encode($response);
}
?>

Activity.java

    import java.util.ArrayList;
    import java.util.List;
    import org.apache.http.NameValuePair;
    import org.apache.http.message.BasicNameValuePair;
    import org.json.JSONException;
    import org.json.JSONObject;
    import com.finecalc.library.JSONParser;
    import android.app.Activity;
    import android.app.ProgressDialog;
    import android.content.Intent;
    import android.os.AsyncTask;
    import android.os.Bundle;
    import android.util.Log;
    import android.view.View;
    import android.widget.Button;
    import android.widget.EditText;
    import android.widget.TextView;

     public class RegisterFine extends Activity {

// Progress Dialog
private ProgressDialog pDialog;

JSONParser jsonParser = new JSONParser();
EditText inputDriver;
EditText inputLicence;
EditText inputOfficer;
EditText inputSpeed;
EditText FineAppl;
EditText inputCategory;
TextView registerFine;
// url to create new fine
private static String url_create_fine = "http://127.0.0.1/android_api/create_fine.php";

// JSON Node names
private static final String TAG_SUCCESS = "success";

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Edit Text
    inputDriver = (EditText) findViewById(R.id.editText1);
    inputLicence = (EditText) findViewById(R.id.editText2);
    inputOfficer = (EditText) findViewById(R.id.editText5);
    inputSpeed = (EditText) findViewById(R.id.editText3);
    FineAppl = (EditText) findViewById(R.id.editText4);
    inputCategory = (EditText) findViewById(R.id.editText6);
    registerFine = (TextView) findViewById(R.id.fineregistered);


    // Create button
    Button btnRegisterfine = (Button) findViewById(R.id.savefine);

    // button click event
    btnRegisterfine.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {
            // creating new product in background thread
            new CreateNewFine().execute();
        }
    });
}

/**
 * Background Async Task
 * */
class CreateNewFine extends AsyncTask<String, String, String> {


    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        pDialog = new ProgressDialog(RegisterFine.this);
        pDialog.setMessage("Registering Fine..");
        pDialog.setIndeterminate(false);
        pDialog.setCancelable(true);
        pDialog.show();
    }


    protected String doInBackground(String... args) {
        String driver = inputDriver.getText().toString();
        String licencenum = inputLicence.getText().toString();
        String officer = inputOfficer.getText().toString();
        String speed = inputSpeed.getText().toString();
        String fine= FineAppl.getText().toString();
        String category = inputCategory.getText().toString();


        // Building Parameters
        List<NameValuePair> params = new ArrayList<NameValuePair>();
        params.add(new BasicNameValuePair("driver", driver));
        params.add(new BasicNameValuePair("licencenum", licencenum));
        params.add(new BasicNameValuePair("officer", officer));
        params.add(new BasicNameValuePair("speed", speed));
        params.add(new BasicNameValuePair("fine", fine));
        params.add(new BasicNameValuePair("category", category));

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

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

        // check for success tag
        try {
            int success = json.getInt(TAG_SUCCESS);

            if (success == 1) {
                // successfully created product
                Intent i = new Intent(getApplicationContext(), UserLogin.class);
                startActivity(i);
                //registerFine.setText("Error occured in registration");

                // closing this screen
                finish();
            } else {
                // failed to create product
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }

        return null;
    }


    protected void onPostExecute(String file_url) {
        // dismiss the dialog once done
        pDialog.dismiss();
    }

   }
  }