【发布时间】：2013-02-27 21:49:32
【问题描述】：
我收到了这个错误
Error parsing data org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
我无法确定这个错误来自哪里，我以为是 php，但是当我从不同的页面获取 json 时它工作正常，所以我不知道错误来自哪里
这是php页面
include("database.php");
$state = $_GET['state'];
$response["county"] = array();
switch ($state){
case "Select A State":
break;
default:
$squery = $con->prepare("SELECT * FROM states WHERE fullName = :state");
$squery->bindParam(':state', $state, PDO::PARAM_STR);
$squery->execute();
$srow = $squery->fetch(PDO::FETCH_ASSOC);
$tb = trim($srow['tbName']);
$query = $con->prepare("SELECT DISTINCT(County) FROM `$tb` ORDER BY County ASC");
$query->execute();
while ($row = $query->fetch(PDO::FETCH_ASSOC)){
$temp = array("display"=>$row['County']);
array_push($response["county"], $temp);
unset($temp);
}
break;
}
print json_encode($response);
这是我的java代码
package com.photosbychristian.ems;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.NameValuePair;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;
public class Edit extends Activity {
private ProgressDialog stateDialog;
private ProgressDialog countyDialog;
private ProgressDialog cityDialog;
JSONParser stateParser = new JSONParser();
JSONParser countyParser = new JSONParser();
JSONParser cityParser = new JSONParser();
private static String url_state = "http://www.photosbychristian.com/ems/states.php";
private String url_county = "http://www.photosbychristian.com/ems/countys.php?state=Pennsylvania";
private static String url_city = "http://www.photosbychristian.com/ems/states.php";
private static final String TAG_STATE_DISPLAY = "display";
private static final String TAG_COUNTY_DISPLAY = "display";
JSONArray statesArray = null;
JSONArray countysArray = null;
JSONArray citysArray = null;
ArrayAdapter<String> stateAdapter;
ArrayAdapter<String> countyAdapter;
ArrayAdapter<String> cityAdapter;
Spinner state;
Spinner county;
Spinner city;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.edit);
TabHost th = (TabHost) findViewById(R.id.tabhost);
th.setup();
TabSpec specs = th.newTabSpec("tag1");
specs.setContent(R.id.tab1);
specs.setIndicator("My Hospitals");
th.addTab(specs);
specs = th.newTabSpec("tag2");
specs.setContent(R.id.tab2);
specs.setIndicator("Add Hospitals");
th.addTab(specs);
new LoadStates().execute();
state = (Spinner) findViewById(R.id.sState);
county = (Spinner) findViewById(R.id.sCounty);
city = (Spinner) findViewById(R.id.sCity);
stateAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item);
countyAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item);
cityAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item);
}
class LoadStates extends AsyncTask<String, String, String> {
// Before starting background thread Show State Progress Dialog
@Override
protected void onPreExecute() {
super.onPreExecute();
stateDialog = new ProgressDialog(Edit.this);
stateDialog.setMessage("Loading States. Please wait...");
stateDialog.setIndeterminate(false);
stateDialog.setCancelable(false);
stateDialog.show();
}
/** Get states form Internet **/
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
// getting JSON string from URL
JSONObject json = stateParser.makeHttpRequest(url_county, "GET",
params);
// Check your log cat for JSON response
Log.d("All States: ", json.toString());
stateAdapter
.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
stateAdapter.add("Select A State");
try {
// products found
// Getting Array of Products
statesArray = json.getJSONArray("state");
// looping through All Products
for (int i = 0; i < statesArray.length(); i++) {
JSONObject c = statesArray.getJSONObject(i);
// Storing each JSON item in variable
// String id = c.getString(TAG_HID);
String disp = c.getString(TAG_STATE_DISPLAY);
stateAdapter.add(disp);
}
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
/** After completing background task Dismiss the progress dialog **/
protected void onPostExecute(String file_url) {
// dismiss the dialog after getting all products
stateDialog.dismiss();
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
// add states to spinner
state.setAdapter(stateAdapter);
}
});
state.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
// On selecting a spinner item
String label = parent.getItemAtPosition(position)
.toString();
if (label == "Select A State") {
} else {
url_county = "http://www.photosbychristian.com/ems/countys.php?state="
+ label;
Log.d("url", url_county);
// load county spinner
new LoadCounty().execute();
}
}
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
}
}
完整的堆栈跟踪
02-27 21:28:58.527: E/JSON Parser(1782): Error parsing data org.json.JSONException: Value <br of type java.lang.String cannot be converted to JSONObject
02-27 21:28:58.527: W/Trace(1782): Unexpected value from nativeGetEnabledTags: 0
02-27 21:28:58.527: W/Trace(1782): Unexpected value from nativeGetEnabledTags: 0
02-27 21:28:58.547: W/Trace(1782): Unexpected value from nativeGetEnabledTags: 0
02-27 21:28:58.547: W/Trace(1782): Unexpected value from nativeGetEnabledTags: 0
02-27 21:28:58.577: W/dalvikvm(1782): threadid=11: thread exiting with uncaught exception (group=0x40a70930)
02-27 21:28:58.587: E/AndroidRuntime(1782): FATAL EXCEPTION: AsyncTask #1
02-27 21:28:58.587: E/AndroidRuntime(1782): java.lang.RuntimeException: An error occured while executing doInBackground()
02-27 21:28:58.587: E/AndroidRuntime(1782): at android.os.AsyncTask$3.done(AsyncTask.java:299)
02-27 21:28:58.587: E/AndroidRuntime(1782): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
02-27 21:28:58.587: E/AndroidRuntime(1782): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
02-27 21:28:58.587: E/AndroidRuntime(1782): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
02-27 21:28:58.587: E/AndroidRuntime(1782): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
02-27 21:28:58.587: E/AndroidRuntime(1782): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
02-27 21:28:58.587: E/AndroidRuntime(1782): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
02-27 21:28:58.587: E/AndroidRuntime(1782): at java.lang.Thread.run(Thread.java:856)
02-27 21:28:58.587: E/AndroidRuntime(1782): Caused by: java.lang.NullPointerException
02-27 21:28:58.587: E/AndroidRuntime(1782): at com.photosbychristian.ems.Edit$LoadStates.doInBackground(Edit.java:106)
02-27 21:28:58.587: E/AndroidRuntime(1782): at com.photosbychristian.ems.Edit$LoadStates.doInBackground(Edit.java:1)
02-27 21:28:58.587: E/AndroidRuntime(1782): at android.os.AsyncTask$2.call(AsyncTask.java:287)
02-27 21:28:58.587: E/AndroidRuntime(1782): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
02-27 21:28:58.587: E/AndroidRuntime(1782): ... 4 more
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