Java 无法处理到服务器的android post请求并将结果接收回android
我对此进行了研究，关于如何发布请求并同时从服务器接收响应，我最终进行了一些合理的演练，但它不起作用。请帮忙Java 无法处理到服务器的android post请求并将结果接收回android,java,php,android,httprequest,urlencode,Java,Php,Android,Httprequest,Urlencode,我对此进行了研究，关于如何发布请求并同时从服务器接收响应，我最终进行了一些合理的演练，但它不起作用。请帮忙 button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { try{ process(); } catch(Exception ex){ Log.e("Url Error Encoding",
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
try{
process();
} catch(Exception ex){
Log.e("Url Error Encoding", "Url Error Encoding");
}
}
});
}
public void process() throws UnsupportedEncodingException{
Prog = spinner1.getSelectedItem().toString();
Dept = spinner2.getSelectedItem().toString();
Session = spinner3.getSelectedItem().toString();
Semester = spinner4.getSelectedItem().toString();
Level = spinner5.getSelectedItem().toString();
Matric = matric.getText().toString();
SharedPreferences sharedPreferences = getSharedPreferences(Config.SHARED_PREF_NAME, Context.MODE_PRIVATE);
College = sharedPreferences.getString(Config.COLLEGE_SHARED_PREF,"Not Available");
// Toast.makeText(ProfileActivity.this, Matric + College, Toast.LENGTH_SHORT).show();
// content.setText(Prog);
String data = URLEncoder.encode("program", "UTF-8")
+ "=" + URLEncoder.encode(Prog, "UTF-8");
data += "&" + URLEncoder.encode("dept", "UTF-8") + "="
+ URLEncoder.encode(Dept, "UTF-8");
data += "&" + URLEncoder.encode("session", "UTF-8") + "="
+ URLEncoder.encode(Session, "UTF-8");
data += "&" + URLEncoder.encode("semester", "UTF-8") + "="
+ URLEncoder.encode(Semester, "UTF-8");
data += "&" + URLEncoder.encode("level", "UTF-8") + "="
+ URLEncoder.encode(Level, "UTF-8");
data += "&" + URLEncoder.encode("college", "UTF-8") + "="
+ URLEncoder.encode(College, "UTF-8");
data += "&" + URLEncoder.encode("matric", "UTF-8") + "="
+ URLEncoder.encode(Matric, "UTF-8");
String text = "";
BufferedReader reader=null;
try{
URL url = new URL("http://www.example.com/locator/checkresult.php");
// Send POST data request
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
wr.write( data );
wr.flush();
// Get the server response
reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
// Read Server Response
while((line = reader.readLine()) != null)
{
// Append server response in string
sb.append(line + "\n");
}
text = sb.toString();
} catch(Exception ex){
ex.printStackTrace();
}
finally {
try
{
reader.close();
}
catch(Exception ex) {
ex.printStackTrace();
}
}
// Show response on activity
content.setText(text);
}
<?php
mysql_connect("localhost", "root", "zzz") or die(mysql_error());
mysql_select_db("sis");
$conn = mysql_connect("localhost", "root", "zzz");
$college = urldecode($_POST['college']);
$program = urldecode($_POST['program']);
$level = urldecode($_POST['level']);
$department = urldecode($_POST['dept']);
$semester = urldecode($_POST['semester']);
$session = urldecode($_POST['session']);
$matric = urldecode($_POST['matric']);
print "$program $level $department";
?>
<?xml version="1.0" encoding="UTF-8"?>
<ScrollView 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">
<LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" android:padding="10dp">
<TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:text="Large Text" android:id="@+id/textView" android:layout_marginBottom="20dp" />
<TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:id="@+id/textView2" android:layout_marginBottom="20dp" />
<TableLayout android:id="@+id/table" android:layout_width="wrap_content" android:layout_height="25dp" android:focusableInTouchMode="true" android:focusable="true" />
<TextView android:id="@+id/content" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginBottom="5dp" />
<TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Program" android:layout_marginBottom="5dp" />
<Spinner android:id="@+id/programme" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#fff" android:layout_marginBottom="10dp" />
<TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Level" android:layout_marginBottom="5dp" />
<Spinner android:id="@+id/level" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#fff" android:layout_marginBottom="10dp" />
<TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Department" android:layout_marginBottom="5dp" />
<Spinner android:id="@+id/dept" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#fff" android:layout_marginBottom="10dp" />
<TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Semester" android:layout_marginBottom="5dp" />
<Spinner android:id="@+id/semester" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#fff" android:layout_marginBottom="10dp" />
<TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:text="Session" android:layout_marginBottom="5dp" />
<Spinner android:id="@+id/session" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#fff" android:layout_marginBottom="10dp" />
<TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="8dp" android:textStyle="bold" android:text="Enter your matric number" />
<EditText android:id="@+id/rmatric" android:layout_width="match_parent" android:layout_height="50dp" />
<Button android:id="@+id/checkresult" android:layout_width="match_parent" android:layout_height="match_parent" android:text="Check Result" />
</LinearLayout>
</ScrollView>
请帮忙。谢谢。为什么不尝试使用volley库，我想建议的另一件事是使用json，而不是使用url编码发送数据
这只是一个建议。这是您的示例代码 您的php文件
<?php
$val =file_get_contents('php://input');
$jsonObj = json_decode($val);
$jsonObj = (object)$jsonObj;
$data1 = $jsonObj->yourkey;
$data2 = $jsonObj->yourkey;
// your sql execution
$returnData = array(
"code" => 500,
"msg" => "UserName Already Exist!! Try with diffrent user Name!!",
);
$a = json_encode($returnData);
echo $a;
die();
?>
import android.content.Context;
import android.graphics.Bitmap;
import android.widget.ImageView;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.RetryPolicy;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.ImageRequest;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.RequestFuture;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.naitiks.helpme.Model.HappyMomentsModel;
import com.naitiks.helpme.R;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutionException;
/**
* Created by Naitik on 25-04-2016.
*/
public class RestHelper {
private RequestQueue queue = null;
private Context context = null;
public void setQueue(RequestQueue queue) {
this.queue = queue;
}
public RequestQueue getQueue() {
return queue;
}
public RestHelper(Context context){
this.context = context;
queue= Volley.newRequestQueue(context);
}
public JSONObject postRequestTest(String url, final JSONObject userMap,final RequestFuture requestFuture){
JsonObjectRequest postRequest = new JsonObjectRequest(Request.Method.POST, url, userMap,requestFuture,requestFuture);
postRequest.setRetryPolicy(new RetryPolicy() {
@Override
public int getCurrentTimeout() {
return 40000;
}
@Override
public int getCurrentRetryCount() {
return 5;
}
@Override
public void retry(VolleyError volleyError) throws VolleyError {
}
});
queue.add(postRequest);
try {
Object object = requestFuture.get();
System.out.println("*** result" +object.toString());
JSONObject result = (JSONObject)object;
return result;
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
return null;
}
}
可以您能举一个例子说明如何使用json来归档相同的预期结果吗。谢谢你的快速回复。你救了我一天我很乐意继续帮忙
import android.content.Context;
import android.graphics.Bitmap;
import android.widget.ImageView;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.RetryPolicy;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.ImageRequest;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.RequestFuture;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.naitiks.helpme.Model.HappyMomentsModel;
import com.naitiks.helpme.R;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ExecutionException;
/**
* Created by Naitik on 25-04-2016.
*/
public class RestHelper {
private RequestQueue queue = null;
private Context context = null;
public void setQueue(RequestQueue queue) {
this.queue = queue;
}
public RequestQueue getQueue() {
return queue;
}
public RestHelper(Context context){
this.context = context;
queue= Volley.newRequestQueue(context);
}
public JSONObject postRequestTest(String url, final JSONObject userMap,final RequestFuture requestFuture){
JsonObjectRequest postRequest = new JsonObjectRequest(Request.Method.POST, url, userMap,requestFuture,requestFuture);
postRequest.setRetryPolicy(new RetryPolicy() {
@Override
public int getCurrentTimeout() {
return 40000;
}
@Override
public int getCurrentRetryCount() {
return 5;
}
@Override
public void retry(VolleyError volleyError) throws VolleyError {
}
});
queue.add(postRequest);
try {
Object object = requestFuture.get();
System.out.println("*** result" +object.toString());
JSONObject result = (JSONObject)object;
return result;
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}
return null;
}
}