Android studio POST 请求示例 [英] Example of POST request in Android studio

问题描述

我几天前才开始学习 android，但在将我的 JSON 数据上传到服务器时遇到了问题.我设法通过以下代码检索它:

I just started learning android few days ago and I have a problem with uploading my JSON data to server. I manage to retrieve it via following code:

我确实设法使用外部 OKHTTP 库检索文件，但我想在不使用外部库的情况下执行此操作.

I did manage to retrieve files using external OKHTTP library but I would like to do this without using external libraries.

package cc.demorest;

import android.os.AsyncTask;
import android.renderscript.ScriptGroup;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.widget.EditText;
import android.widget.TextView;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        setContentView(R.layout.activity_main);

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        DownloadTask task = new DownloadTask();
        task.execute("myserver.com");
    }
//Downloadtask
    public class DownloadTask extends AsyncTask<String,Void,String> {


        @Override
        protected String doInBackground(String... urls) {

            String result = "";
                URL url;
            HttpURLConnection urlConnection=null;


            try {
                url = new URL(urls[0]);

                urlConnection=(HttpURLConnection)url.openConnection();
                InputStream in = urlConnection.getInputStream();

                InputStreamReader reader = new InputStreamReader(in);

                int data=reader.read();

                while (data !=-1){

                    char current=(char) data;

                    result += current;
                    data = reader.read();
                }

                return result;

            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }

            return null;
        }
//After download task
        @Override
        protected void onPostExecute(String result) {
            super.onPostExecute(result);
        try {

            JSONArray jArray=new JSONArray(result);
                JSONObject json_data = jArray.getJSONObject(1);
//Logging data
               Log.i("Podatci: ", "Id: " + json_data.getInt("Id") +
                                ", Name: " + json_data.getString("Name") +
                                ", Years: " + json_data.getString("Age") +
                                ", Email address: " + json_data.getString("Email")
                );
                TextView textView = (TextView) findViewById(R.id.textViewName);
                textView.setText("ID: "+", Name: "+  json_data.getInt("Id")+json_data.getString("Name")+json_data.getString("Age")+json_data.getString("Email"));




/*
        String data = jsonObject.getString("Name");
            Log.i("Website content", data);
*/
        } catch (JSONException e) {
            e.printStackTrace();
        }

        }
    }



}

我现在正尝试将我的数据发送到具有相同字段的同一台服务器.我搜索了互联网，但我发现的大多数东西都已经过时了..我真的很想提供一些帮助或示例.最好的问候

I am now trying to send my data to same server with same fields. I searched internet but most things that I found are outdated.. I would really appriciate some help or example. Best Regards

推荐答案

按定义使用 Volley 这里.这要容易得多.

Use Volley as defined here. It's far more easier.

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