Question

我需要从php发送一个json POST到web服务器。我尝试了很多代码但是没有用。

现在我尝试使用Postman进行简单的POST，有和没有发送数据。并始终收到404错误。如果我使用GET发送数据页面工作正常。

如果你想测试，请参阅php：

网址：http://gclimb.com/Androidphp/index.php

<?php
$json  = file_get_contents('php://input');
$obj = json_decode($json);
echo $obj["username"];
echo $obj["pass"];

if ($_POST["username"]) {
echo $_POST["username"];
}
if ($_GET["username"]) {
echo $_GET["username"];
}

 ?>

修改

POSTMAN screen

404错误：

POST /androidphp/index.php HTTP / 1.1主机：gclimb.com缓存控制：无缓存邮递员令牌：de575030-0343-64d9-fce3-e640ce12780c内容类型：multipart / form-data; boundary = ---- WebKitFormBoundary7MA4YWxkTrZu0gW ----获取404错误

工作正常：

GET /androidphp/index.php HTTP / 1.1 主持人：gclimb.com 缓存控制：无缓存邮差 - 令牌：f2999796-9338-6ef6-9877-075be9a8e530

Answer 1

制作POST request时，请不要忘记请求路径区分大小写！

尝试使用此目标执行您的请求：

http://gclimb.com/androidphp/index.php

Answer 2

这里我将提供一个完整的PHP和一个Android应用程序，用于将数据从Android应用程序发送到服务器。

假设您的数据库中有此表：

------------------------
| movie_id | movie_name|
------------------------

1- PHP SCRIPT

<?php 
 $servername="localhost";
$username="root";
$password="";
$db="derar";
$connection=mysqli_connect($servername,$username,$password,$db);
$json = file_get_contents('php://input');
$obj = json_decode($json,true);
$movie_name=$obj['movie_name'];
mysqli_query($connection,"insert into  movie (movie_id, movie_name) VALUES (NULL,'$movie_name');");
echo "inserted";
?>

这段代码是简单的代码，你必须把SQL注入。

2-Android应用

<强> activity_main.xml中

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.win7.derar.MainActivity">

   <Button
       android:id="@+id/send_button"
       android:layout_width="match_parent"
       android:text="إضغط لإرسال المعلومات"
       android:layout_height="wrap_content" />
</RelativeLayout>

<强> MainActivity

public class MainActivity extends AppCompatActivity {
    private  Button send_button;
    private String Server_URL="http://192.168.1.101/derar/insertDataToServer.php";
    private String movie_name="Titanic";

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

        send_button=(Button)findViewById(R.id.send_button);// Button Assignment
        send_button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                SendDataToServer sendDataToServer=new SendDataToServer();
                sendDataToServer.execute(Server_URL,movie_name);


            }
        });// Button On Click Listener
    }


    private class SendDataToServer extends AsyncTask<String, Void, Boolean> {

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

            OutputStream os = null;
            InputStream is = null;
            HttpURLConnection conn = null;


            try {

                URL url = new URL(urls[0]);
                JSONObject jsonObject = new JSONObject();
                jsonObject.put("movie_name", urls[1]);
                String message = jsonObject.toString();
                Log.d(message, "Test");
                conn = (HttpURLConnection) url.openConnection();
                conn.setReadTimeout(10000);
                conn.setConnectTimeout(15000);
                conn.setRequestMethod("POST");
                conn.setDoInput(true);
                conn.setDoOutput(true);
                conn.setFixedLengthStreamingMode(message.getBytes().length);

                conn.setRequestProperty("Content-Type", "application/json; charset=utf-8");
                conn.setRequestProperty("X-Requested-With", "XMLHttpRequest");

                conn.connect();

                os = new BufferedOutputStream(conn.getOutputStream());
                os.write(message.getBytes());

                os.flush();

                is = conn.getInputStream();


            } catch (MalformedURLException e) {
                Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                ;
                e.printStackTrace();
                return false;
            } catch (IOException e) {
                Toast.makeText(getApplicationContext(), e.toString(), Toast.LENGTH_LONG).show();
                ;
                e.printStackTrace();
                return false;
            } catch (JSONException e) {
                e.printStackTrace();
            } finally {

                try {
                    assert os != null;
                    os.close();
                    assert is != null;
                    is.close();

                } catch (IOException e) {

                    e.printStackTrace();
                }

                conn.disconnect();
            }


            return true;
        }


        @Override
        protected void onPostExecute(Boolean result) {
            if (result) {


                  Toast.makeText(getApplicationContext(), "لقد نجح إرسال المعلومات", Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(getApplicationContext(), "فشل في إرسال المعلومات", Toast.LENGTH_LONG).show();

            }

        }
    }
}

别忘了：

1-将此权限添加到清单文件：

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

2-更改此Server_URL="http://192.168.1.101/derar/insertDataToServer.php";

的IP地址

到您自己的IP地址以运行localhost服务器。

我希望这对你有用。

收到POST时出错404

2 个答案: