Question

我正在制作一个需要在MySQL数据库中发布一些数据的应用程序。代码不显示任何错误，但不会发送任何数据。我的php文件和HttpPost似乎工作正常 - 我尝试更改php文件，以便它已经包含数据，然后它工作。这是我的php：

<?php

$username = "user";
$password = "password";
$hostname = "mysql.xxx.com"; 

//connection to the database
$dbhandle = mysql_connect($hostname, $username, $password) 
  or die("Unable to connect to MySQL");
echo "Connected to MySQL<br>";


//select a database to work with
$selected = mysql_select_db("myapp_xxx_com",$dbhandle) 
  or die("Could not select examples");


//retrieve the data
$street = $_POST['Street'];
$house = $_POST['House'];
$city = $_POST['City'];
$comment = $_POST['Comment'];

mysql_query ("INSERT INTO Address (Street, Number, City, Comment, TimeOrdered) VALUES('$street', '$house, '$city', '$comment', NOW())");

mysql_close($dbhandle);

?>

这是我的java代码：

import java.util.ArrayList;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
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 android.annotation.TargetApi;
import android.app.Activity;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class OrderSummary extends Activity implements OnClickListener {

    private EditText editStreetText, editNumberText, editCityText, editCommentText;
    private Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_order_summary);

        editStreetText = (EditText) findViewById(R.id.summary_street);
        editNumberText = (EditText) findViewById(R.id.summary_house);
        editCityText = (EditText) findViewById(R.id.summary_city);
        editCommentText = (EditText) findViewById(R.id.summary_comment);
        button = (Button)findViewById(R.id.button_post_data);
        button.setOnClickListener(this);


    @Override
    public void onClick(View v) {

        String streetValue = editStreetText.getText().toString();
        String numberValue = editNumberText.getText().toString();
        String cityValue = editCityText.getText().toString();
        String commentValue = editCommentText.getText().toString();
        new SummaryAsyncTask().execute(streetValue, numberValue, cityValue, commentValue);

    }

    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    private void setupActionBar() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            getActionBar().setDisplayHomeAsUpEnabled(true);
        }
    }

    public void postData(String street, String number, String city, String comment)
    {

        HttpClient httpclient = new DefaultHttpClient();
        HttpPost httppost = new HttpPost("http://xxxxxxx.com/postdata.php");

        try{
            ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4);
            nameValuePairs.add(new BasicNameValuePair("Street", street));
            nameValuePairs.add(new BasicNameValuePair("House", number));
            nameValuePairs.add(new BasicNameValuePair("City", city));
            nameValuePairs.add(new BasicNameValuePair("Comment", comment));

            httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
            HttpResponse response = httpclient.execute(httppost);
        }
        catch(Exception e)
        {
            Log.e("log_tag", "Error:  "+e.toString());
        } 

    }

    private class SummaryAsyncTask extends AsyncTask<String, Void, Void>{

        protected Void doInBackground(String... params){
            postData(params[0], params[1], params[2], params[3]);
            return null;
        }
    }

    }
}

我根据本教程http://mobiledevtuts.com/android/android-http-with-asynctask-example/编写了代码。我希望有人可以帮助我。

Answer 1

您在PHP中遇到错误：'$house必须是'$house'

Java代码测试和工作我只是稍微改变了一下

import android.os.Bundle;
import android.app.Activity;

import java.util.ArrayList;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
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 android.os.AsyncTask;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class OrderSummary extends Activity {

    String streetValue;
    String numberValue;
    String cityValue;
    String commentValue;

    private EditText editStreetText, editNumberText, editCityText, editCommentText;
    private Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_order_summary);

        editStreetText = (EditText) findViewById(R.id.summary_street);
        editNumberText = (EditText) findViewById(R.id.summary_house);
        editCityText = (EditText) findViewById(R.id.summary_city);
        editCommentText = (EditText) findViewById(R.id.summary_comment);

        button = (Button) findViewById(R.id.button_post_data);

        button.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                streetValue = editStreetText.getText().toString();
                numberValue = editNumberText.getText().toString();
                cityValue = editCityText.getText().toString();
                commentValue = editCommentText.getText().toString();
                new SummaryAsyncTask().execute((Void) null);
            }
        }); 
    }

    class SummaryAsyncTask extends AsyncTask<Void, Void, Boolean> {

        private void postData(String street, String number, String city,
                String comment) {

            HttpClient httpclient = new DefaultHttpClient();
            HttpPost httppost = new HttpPost("http://xxxxxxx.com/postdata.php");

            try {
                ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(4);
                nameValuePairs.add(new BasicNameValuePair("Street", street));
                nameValuePairs.add(new BasicNameValuePair("House", number));
                nameValuePairs.add(new BasicNameValuePair("City", city));
                nameValuePairs.add(new BasicNameValuePair("Comment", comment));
                httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                HttpResponse response = httpclient.execute(httppost);
            }
            catch(Exception e)
            {
                Log.e("log_tag", "Error:  "+e.toString());
            }
        }

        @Override
        protected Boolean doInBackground(Void... params) {
            postData(streetValue, numberValue, cityValue, commentValue);
            return null;
        }
    }
}

不要忘记Android清单上的Internet权限

<uses-permission android:name="android.permission.INTERNET"/>

您可以在<uses-sdk />代码

之后添加权限

Answer 2

公共类RefreshChildren扩展了AsyncTask {

WebService service;
Helper helper;

RefreshChildren(){
    service =new WebService();
    helper =new Helper(null);
}

@Override
protected String doInBackground(String... params) {
    refreshChildren();
    return null;
}   

private void refreshChildren() {
    Log.d("Refresh", "children started");
    List<ChildrenInstallBeen> childrenList=new ArrayList<ChildrenInstallBeen>();
    childrenList=service.getChildrenListRefresh();
    Iterator<ChildrenInstallBeen> iterator=childrenList.iterator();
    while (iterator.hasNext()) {
        ChildrenInstallBeen been = (ChildrenInstallBeen) iterator
                .next();
        Log.d("refresh children : ", ""+been.getFirst_name());

    }

}

}

使用http-post和AsyncTask将数据插入MySQL不起作用

2 个答案: