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[英]Sending json data into db and display in listview throws “null pointer exception”
[英]JSON Exception sending data
錯誤:
Value <html><head><title>Apache of type java.lang.String cannot be converted to JSONObject
org.json.JSONException: Value <html><head><title>Apache of type java.lang.String cannot be converted to JSONObjectat org.json.JSON.typeMismatch(JSON.java:111)
at org.json.JSONObject.<init>(JSONObject.java:158)
at org.json.JSONObject.<init>(JSONObject.java:171)
at com.avilyne.android.MainActivity.handleResponse(MainActivity.java:107)
at com.avilyne.android.MainActivity$WebServiceTask.onPostExecute(MainActivity.java:216)
at com.avilyne.android.MainActivity$WebServiceTask.onPostExecute(MainActivity.java:1)
at android.os.AsyncTask.finish(AsyncTask.java:631)
at android.os.AsyncTask.access$600(AsyncTask.java:177)
at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
碼:
public void handleResponse(String response)
{
EditText edFirstName = (EditText) findViewById(R.id.first_name);
EditText edLastName = (EditText) findViewById(R.id.last_name);
EditText edEmail = (EditText) findViewById(R.id.email);
String firstName=edFirstName.getText().toString();
String lastName=edLastName.getText().toString();
String email=edEmail.getText().toString();
edFirstName.setText("");
edLastName.setText("");
edEmail.setText("");
try
{
JSONObject jso = new JSONObject(response.toString());
String jfirstName = jso.getString(firstName);
String jlastName = jso.getString(lastName);
String jemail = jso.getString(email);
edFirstName.setText(jfirstName);
edLastName.setText(jlastName);
edEmail.setText(jemail);
} catch (Exception e)
{
Log.e(TAG, e.getLocalizedMessage(), e);
}
}
日志告訴您原因:
Value <html><head><title>Apache of type java.lang.String cannot be converted to JSONObject
剝離html標簽以獲取原始Json字符串 ,並將其傳遞給JSONObject構造函數。
原始Json字符串如下所示:
{
"glossary": {
"title": "example glossary",
"GlossDiv": {
"title": "S",
}
}
}
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