我的程序有些问题。它应该从phpMyAdmin向我展示BDD的内容，但它返回并发送消息＆＃34; erreur＆＃34;在我的程序中，我的logcat中有一个Value <br of type java.lang.String cannot be converted to JSONObject。
我在互联网上寻找答案，但我没有找到答案，我也不知道为什么我的Json不起作用。
提前感谢您的帮助。
这是我的计划：
package com.mysql.enisandroidclub;
import java.util.ArrayList;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;
public class ListDataActivity extends Activity {
CustomProgressDialog progressDialog;
String urlGet="http://192.168.1.28/application/affichage_bd.php";
GetDataAsyncTask getData;
String message;
int success;
ListView lv;
List<String> myListofData ;
ArrayAdapter arrayadp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_data);
progressDialog = new CustomProgressDialog(this, R.drawable.loading_throbber);
progressDialog.setCancelable(true);
lv=(ListView)findViewById(R.id.listView1);
myListofData = new ArrayList<String>();
getData=new GetDataAsyncTask();
getData.execute();
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3)
{
// s= value of seleted row
String s=(String) (lv.getItemAtPosition(arg2));
// on each row , I have save all of data separted by '-' : col1-col2-col3-col4
String[] patrs = s.split(" - ");
//parts[0] contains value of col1 , parts [1] contains value of col2 of each row
Intent intent = new Intent(ListDataActivity.this, EditSuppActivity.class);
//send data to the next activity
intent.putExtra("col1Value", patrs[0]);
intent.putExtra("col2Value", patrs[1]);
intent.putExtra("col3Value", patrs[2]);
intent.putExtra("col4Value", patrs[3]);
startActivityForResult(intent, 100);
finish();
}
});
}
private class GetDataAsyncTask extends AsyncTask<Void, Void, Void> {
@Override
protected void onPreExecute() {
Log.i("add", "onPreExecute");
super.onPreExecute();
progressDialog.show();
}
@Override
protected Void doInBackground(Void... params) {
Log.i("add", " start doInBackground");
ServiceHandler sh = new ServiceHandler();
// Making a request to url and getting response
String jsonStr = sh.makeServiceCall(urlGet, ServiceHandler.GET);
Log.d("Response: ",jsonStr);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
// return value of success
success=jsonObj.getInt("success");
Log.i("success", String.valueOf(success));
if (success==0)
{
// success=0 ==> there is a string = message
message=jsonObj.getString("message");
Log.i("message", message);
}
else if (success==1)
{
// success=1 ==> there is an array of data = valeurs
JSONArray dataValues = jsonObj.getJSONArray("valeurs");
// loop each row in the array
for(int j=0;j<dataValues.length();j++)
{
JSONObject values = dataValues.getJSONObject(j);
// return values of col1 in valCol1
String valCol1= values.getString("col1");
// return values of col2 in valCol2
String valCol2= values.getString("col2");
String valCol3= values.getString("col3");
String valCol4= values.getString("col4");
//add a string witch contains all of data getted from the response
myListofData.add(valCol1+" - "+valCol2+" - "+valCol3+" - "+valCol4);
Log.i("Row "+(j+1), valCol1+" - "+valCol2+" - "+valCol3+" - "+valCol4);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
} else {
Log.e("ServiceHandler", "Couldn't get any data from the url");
}
Log.i("add", " end doInBackground");
return null;
}
@Override
protected void onPostExecute(Void result) {
Log.i("add", "onPostExecute");
super.onPostExecute(result);
if (progressDialog.isShowing())
{
progressDialog.dismiss();
}
if(success==1)
{
Toast.makeText(getApplicationContext(), "Bien recues ", Toast.LENGTH_LONG).show();
// show the list view contains the data
arrayadp=new ArrayAdapter(getApplicationContext(), android.R.layout.simple_list_item_1, myListofData);
lv.setAdapter(arrayadp);
}
else
{
Toast.makeText(getApplicationContext(), "Erreurs", Toast.LENGTH_LONG).show();
}
}
}
}
ServiceHander：
package com.mysql.enisandroidclub;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;
public class ServiceHandler {
static String response = null;
public final static int GET = 1;
public final static int POST = 2;
public ServiceHandler() {
}
/*
* Making service call
* @url - url to make request
* @method - http request method
* */
public String makeServiceCall(String url, int method) {
return this.makeServiceCall(url, method, null);
}
/*
* Making service call
* @url - url to make request
* @method - http request method
* @params - http request params
* */
public String makeServiceCall(String url, int method,List<NameValuePair> params) {
try {
// http client
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpEntity httpEntity = null;
HttpResponse httpResponse = null;
// Checking http request method type
if (method == POST) {
HttpPost httpPost = new HttpPost(url);
// adding post params
if (params != null) {
httpPost.setEntity(new UrlEncodedFormEntity(params));
}
httpResponse = httpClient.execute(httpPost);
} else if (method == GET) {
// appending params to url
if (params != null) {
String paramString = URLEncodedUtils
.format(params, "utf-8");
url += "?" + paramString;
}
HttpGet httpGet = new HttpGet(url);
httpResponse = httpClient.execute(httpGet);
}
httpEntity = httpResponse.getEntity();
response = EntityUtils.toString(httpEntity);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
}
这是我的logcat：
02-07 16:23:55.661: W/EGL_emulation(2572): eglSurfaceAttrib not implemented
02-07 16:23:55.661: W/OpenGLRenderer(2572): Failed to set EGL_SWAP_BEHAVIOR on surface 0xa5b08fa0, error=EGL_SUCCESS
02-07 16:23:59.498: I/add(2572): onPreExecute
02-07 16:23:59.502: I/add(2572): start doInBackground
02-07 16:23:59.529: D/Response:(2572): <br />
02-07 16:23:59.529: D/Response:(2572): <font size='1'><table class='xdebug-error xe-deprecated' dir='ltr' border='1' cellspacing='0' cellpadding='1'>
02-07 16:23:59.529: D/Response:(2572): <tr><th align='left' bgcolor='#f57900' colspan="5"><span style='background-color: #cc0000; color: #fce94f; font-size: x-large;'>( ! )</span> Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in D:\wamp\www\application\connexion.php on line <i>12</i></th></tr>
02-07 16:23:59.529: D/Response:(2572): <tr><th align='left' bgcolor='#e9b96e' colspan='5'>Call Stack</th></tr>
02-07 16:23:59.529: D/Response:(2572): <tr><th align='center' bgcolor='#eeeeec'>#</th><th align='left' bgcolor='#eeeeec'>Time</th><th align='left' bgcolor='#eeeeec'>Memory</th><th align='left' bgcolor='#eeeeec'>Function</th><th align='left' bgcolor='#eeeeec'>Location</th></tr>
02-07 16:23:59.529: D/Response:(2572): <tr><td bgcolor='#eeeeec' align='center'>1</td><td bgcolor='#eeeeec' align='center'>0.0000</td><td bgcolor='#eeeeec' align='right'>241672</td><td bgcolor='#eeeeec'>{main}( )</td><td title='D:\wamp\www\application\affichage_bd.php' bgcolor='#eeeeec'>..\affichage_bd.php<b>:</b>0</td></tr>
02-07 16:23:59.529: D/Response:(2572): <tr><td bgcolor='#eeeeec' align='center'>2</td><td bgcolor='#eeeeec' align='center'>0.0000</td><td bgcolor='#eeeeec' align='right'>250776</td><td bgcolor='#eeeeec'>CONNEXION_DB->__construct( )</td><td title='D:\wamp\www\application\affichage_bd.php' bgcolor='#eeeeec'>..\affichage_bd.php<b>:</b>24</td></tr>
02-07 16:23:59.529: D/Response:(2572): <tr><td bgcolor='#eeeeec' align='center'>3</td><td bgcolor='#eeeeec' align='center'>0.0000</td><td bgcolor='#eeeeec' align='right'>250832</td><td bgcolor='#eeeeec'>CONNEXION_DB->connection( )</td><td title='D:\wamp\www\application\connexion.php' bgcolor='#eeeeec'>..\connexion.php<b>:</b>4</td></tr>
02-07 16:23:59.529: D/Response:(2572): <tr><td bgcolor='#eeeeec' align='center'>4</td><td bgcolor='#eeeeec' align='center'>0.0000</td><td bgcolor='#eeeeec' align='right'>251120</td><td bgcolor='#eeeeec'><a href='http://www.php.net/function.mysql-connect' target='_new'>mysql_connect</a>
02-07 16:23:59.529: D/Response:(2572): ( )</td><td title='D:\wamp\www\application\connexion.php' bgcolor='#eeeeec'>..\connexion.php<b>:</b>12</td></tr>
02-07 16:23:59.529: D/Response:(2572): </table></font>
02-07 16:23:59.529: D/Response:(2572): {"valeurs":[{"col1":"1","col2":"dza","col3":"dza","col4":"dza"}],"success":1}
02-07 16:23:59.530: W/System.err(2572): org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
02-07 16:23:59.530: W/System.err(2572): at org.json.JSON.typeMismatch(JSON.java:111)
02-07 16:23:59.530: W/System.err(2572): at org.json.JSONObject.<init>(JSONObject.java:160)
02-07 16:23:59.530: W/System.err(2572): at org.json.JSONObject.<init>(JSONObject.java:173)
02-07 16:23:59.530: W/System.err(2572): at com.mysql.enisandroidclub.ListDataActivity$GetDataAsyncTask.doInBackground(ListDataActivity.java:84)
02-07 16:23:59.530: W/System.err(2572): at com.mysql.enisandroidclub.ListDataActivity$GetDataAsyncTask.doInBackground(ListDataActivity.java:1)
02-07 16:23:59.530: W/System.err(2572): at android.os.AsyncTask$2.call(AsyncTask.java:288)
02-07 16:23:59.530: W/System.err(2572): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
02-07 16:23:59.530: W/System.err(2572): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
02-07 16:23:59.530: W/System.err(2572): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
02-07 16:23:59.530: W/System.err(2572): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
02-07 16:23:59.530: W/System.err(2572): at java.lang.Thread.run(Thread.java:818)
02-07 16:23:59.530: I/add(2572): end doInBackground
02-07 16:23:59.557: W/EGL_emulation(2572): eglSurfaceAttrib not implemented
02-07 16:23:59.557: W/OpenGLRenderer(2572): Failed to set EGL_SWAP_BEHAVIOR on surface 0xa5dfe960, error=EGL_SUCCESS
02-07 16:23:59.599: W/EGL_emulation(2572): eglSurfaceAttrib not implemented
02-07 16:23:59.599: W/OpenGLRenderer(2572): Failed to set EGL_SWAP_BEHAVIOR on surface 0xa5dfe900, error=EGL_SUCCESS
02-07 16:23:59.631: I/add(2572): onPostExecute
这是我的php程序 Affichage_bd.php：
<?php
/*
* Following code will list all the data in the db
*/
// array for JSON response
$response = array();
// include db connect class
require_once(__DIR__ . '/connexion.php');
// connecting to db
$db = new CONNEXION_DB();
// get all products from products table
$result = mysql_query("SELECT * FROM tableexemple") or die(mysql_error());
// check for empty result
if (mysql_num_rows($result) > 0)
{
// looping through all results
$response["valeurs"] = array();
while ($row = mysql_fetch_array($result)) {
// temp user array
$ligne = array();
$ligne["col1"] = $row["col1"];
$ligne["col2"] = $row["col2"];
$ligne["col3"] = $row["col3"];
$ligne["col4"] = $row["col4"];
// push single row into final response array
array_push($response["valeurs"], $ligne);
}
// success
$response["success"] = 1;
// echo in JSON response
echo json_encode($response);
} else {
// no products found
$response["success"] = 0;
$response["message"] = "No data found";
// echo no users JSON
echo json_encode($response);
}
?>
最后是connexion.php：
<?php
class CONNEXION_DB {
function __construct() {
$this->connection(); // connexion à la base
}
function __destruct() {
$this->fermer(); // fermer la connexion
}
function connection() {
// connexion à la base
$connexion = mysql_connect("localhost", "root", "") or die(mysql_error());
// selection de la base
$db = mysql_select_db("test") or die(mysql_error()) or die(mysql_error());
return $connexion;
}
function fermer() {
mysql_close(); //Fermer la connexion
}
}
?>
我有Log.e("Content :", "JSON Object: "+jsonObj.toString());来显示我的JSON上包含的内容，它显示了我：
02-09 08:54:42.147: E/Content :(2918): {"valeurs":[{"col1":"1","col2":"sza","col3":"sza","col4":"sza"},{"col1":"2","col2":"sza","col3":"sza","col4":"sza"},{"col1":"3","col2":"gui","col3":"huio","col4":"hio"},{"col1":"4","col2":"dza","col3":"dza","col4":"dza"},{"col1":"5","col2":"dza","col3":"dza","col4":"dza"},{"col1":"6","col2":"dza","col3":"dza","col4":"dza"},{"col1":"7","col2":"dza","col3":"dza","col4":"dza"},{"col1":"8","col2":"fez","col3":"fez","col4":"fez"},{"col1":"9","col2":"fez","col3":"fez","col4":"fez"},{"col1":"10","col2":"dza","col3":"dza","col4":"dza"},{"col1":"11","col2":"dza","col3":"dza","col4":"dza"},{"col1":"12","col2":"dzadza","col3":"dza","col4":"ddzazadza"},{"col1":"13","col2":"dzadza","col3":"dza","col4":"ddzazadza"},{"col1":"14","col2":"dza","col3":"dza","col4":"dza"},{"col1":"15","col2":"dza","col3":"dza","col4":"dza"},{"col1":"16","col2":"dza","col3":"dza","col4":"dza"},{"col1":"17","col2":"dza","col3":"dza","col4":"dza"},
{"col1":"18","col2":"dza","col3":"dza","col4":"dza"},{"col1":"19","col2":"dza","col3":"tfger","col4":"eaz"},{"col1":"20","col2":"dza","col3":"dza","col4":"dza"}],"success":1}
但是当我在我的php文件中将它声明为数组时，应该找到它，不是吗？