我完成了我的时间表应用程序，其中时间表存储在 wamp 服务器中，我的 android 应用程序将获取表并将它们保存在 android 上的 sqlite DB 中。我使用 Jsonparsing 从服务器获取数据。
我未能在 www.000webhost.com 上托管我的表，在 android logcat 中，我收到有关 Json 解析的警告和错误。
浏览时我知道，我在 wamp 中使用的 php 是 3.4，但在上面的网站上它是 3.2，它不支持 json 数组。
有没有办法解决这个问题？是否有任何其他免费网站可以托管支持 Json 数组？
这是我的部分代码..
private class GrabURL extends AsyncTask<String, Void, Void>
{
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();;
private ProgressDialog Dialog = new ProgressDialog(MainActivity.this);
protected void onPreExecute()
{
Dialog.setMessage("Loading...");
Dialog.show();
nameValuePairs.add(new BasicNameValuePair("DEPT",DEPT));
nameValuePairs.add(new BasicNameValuePair("SEM",SEM));
nameValuePairs.add(new BasicNameValuePair("DIV",DIV));
}
protected Void doInBackground(String... urls)
{
try{
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
response=httpclient.execute(httppost);
inputStream = response.getEntity().getContent();
}
catch(Exception e)
{
Dialog.dismiss();
Toast.makeText(getBaseContext(), "Check your internet connection", Toast.LENGTH_SHORT).show();
Log.e("log_tag", "Error in http connection "+e.toString());
}
return null;
}
protected void onPostExecute(Void unused)
{
try{
BufferedReader reader = new BufferedReader(new InputStreamReader(
inputStream, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
inputStream.close();
json = sb.toString();
}
catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
try{
JSONArray jarray = new JSONArray(json);
SQLiteDatabase db=openOrCreateDatabase("Mydb", MODE_PRIVATE,null);
db.execSQL("DROP TABLE IF EXISTS stores;");
db.execSQL("CREATE TABLE IF NOT EXISTS stores(day VARCHAR,first VARCHAR,sec VARCHAR," +
"third VARCHAR,fourth VARCHAR,fifth VARCHAR,sixth VARCHAR," +
"seventh VARCHAR,eighth VARCHAR);");
db.execSQL("INSERT INTO stores VALUES('DAY','8-9','9-10','10:15-11:15','11:15-12:15'," +
"'12:30-1:30','1:30-2:30','2:45-3:45','3:45-4:45');");
for (int i=0; i < (jarray.length()); i++)
{
JSONObject oneObject = jarray.getJSONObject(i);
SQLiteDatabase db1=openOrCreateDatabase("Mydb", MODE_PRIVATE,null);
db1.execSQL("INSERT INTO stores ( day,first,sec,third,fourth,fifth,sixth,seventh,eighth) " +
"VALUES ( ?, ?, ?, ?, ?, ?, ?, ?,? )",
new Object [] {
strday = oneObject.getString("day"),
strone = oneObject.getString("8-9"),
strtwo = oneObject.getString("9-10"),
strthree = oneObject.getString("10:15-11:15"),
strfour = oneObject.getString("11:15-12:15"),
strfive = oneObject.getString("12:30-1:30"),
strsix = oneObject.getString("1:30-2:30"),
strseven = oneObject.getString("2:45-3:45"),
streight = oneObject.getString("3:45-4:45")
}
);
db1.close();
Dialog.dismiss();
}
Toast.makeText(getBaseContext(), "Successfully saved.", Toast.LENGTH_SHORT).show();
db.close();
}
catch (Exception e) {
e.printStackTrace();
Log.e("log_tag", "oops!! error in saving"+e.toString());
Toast.makeText(getBaseContext(), "oops!! error in saving ur time table", Toast.LENGTH_SHORT).show();
Toast.makeText(getBaseContext(), "Your Time Table is not available", Toast.LENGTH_SHORT).show();
}
}
}
public void grabURL(String url)
{
new GrabURL().execute(url);
}
日志猫....
12-18 18:27:59.373: W/KeyCharacterMap(1014): No keyboard for id 0
12-18 18:27:59.373: W/KeyCharacterMap(1014): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
12-18 18:28:37.283: D/dalvikvm(1014): GC_EXTERNAL_ALLOC freed 167K, 51% free 2716K/5511K, external 513K/517K, paused 51ms
12-18 18:28:38.643: D/dalvikvm(1014): GC_FOR_MALLOC freed 66K, 50% free 2827K/5639K, external 518K/1030K, paused 47ms
12-18 18:28:39.363: W/System.err(1014): org.json.JSONException: Value Invalid of type java.lang.String cannot be converted to JSONArray
12-18 18:28:39.363: W/System.err(1014): at org.json.JSON.typeMismatch(JSON.java:107)
12-18 18:28:39.363: W/System.err(1014): at org.json.JSONArray.<init>(JSONArray.java:91)
12-18 18:28:39.363: W/System.err(1014): at org.json.JSONArray.<init>(JSONArray.java:103)
12-18 18:28:39.363: W/System.err(1014): at com.exam.allabouttable.MainActivity$GrabURL.onPostExecute(MainActivity.java:195)
12-18 18:28:39.373: W/System.err(1014): at com.exam.allabouttable.MainActivity$GrabURL.onPostExecute(MainActivity.java:1)
12-18 18:28:39.373: W/System.err(1014): at android.os.AsyncTask.finish(AsyncTask.java:417)
12-18 18:28:39.373: W/System.err(1014): at android.os.AsyncTask.access$300(AsyncTask.java:127)
12-18 18:28:39.373: W/System.err(1014): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:429)
12-18 18:28:39.373: W/System.err(1014): at android.os.Handler.dispatchMessage(Handler.java:99)
12-18 18:28:39.373: W/System.err(1014): at android.os.Looper.loop(Looper.java:123)
12-18 18:28:39.373: W/System.err(1014): at android.app.ActivityThread.main(ActivityThread.java:3683)
12-18 18:28:39.373: W/System.err(1014): at java.lang.reflect.Method.invokeNative(Native Method)
12-18 18:28:39.373: W/System.err(1014): at java.lang.reflect.Method.invoke(Method.java:507)
12-18 18:28:39.383: W/System.err(1014): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
12-18 18:28:39.383: W/System.err(1014): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
12-18 18:28:39.383: W/System.err(1014): at dalvik.system.NativeStart.main(Native Method)
12-18 18:28:39.383: E/log_tag(1014): oops!! error in savingorg.json.JSONException: Value Invalid of type java.lang.String cannot be converted to JSONArray
12-18 18:36:29.023: I/dalvikvm(1014): Jit: resizing JitTable from 512 to 1024