我正在尝试使用Volley将数据发布到服务器。我遇到了JsonException。我对它一无所知。我检查了＆＃34;响应的长度＆＃34;然后我记录了响应，但没有显示响应。有没有人遇到过这样的问题？有谁知道这个问题的解决方案？
代码：
public void report()
{
final ProgressDialog pr
=new ProgressDialog(Report.this);
pr.setMessage("Sending your review..");
pr.setIndeterminate(false);
pr.getWindow().setGravity(Gravity.CENTER);
pr.show();
SharedPreferences sharedPreferences1=getApplicationContext().getSharedPreferences("prsnl_Id",Context.MODE_PRIVATE);
if (sharedPreferences1.contains("prsnlid"))
{
uid=Integer.toString(sharedPreferences1.getInt("prsnlid",0));
}
RequestQueue requestQueue= Volley.newRequestQueue(Report.this);
StringRequest stringRequest=new StringRequest(Request.Method.POST, BaseUrl.getInstance().getUrl()+"/xyz.php", new Response.Listener<String>() {
@Override
public void onResponse(String response) {
if (response.length()>0){
Log.e("Response",response);
try {
JSONObject jsonObject=new JSONObject(response);
} catch (JSONException e) {
e.printStackTrace();
}
}
pr.cancel();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
pr.cancel();
}
})
{
@Override
protected Map<String, String> getParams()
{
HashMap<String,String> hashMap=new HashMap<>();
hashMap.put("report",report);
Log.e("uid",uid);
hashMap.put("uid",uid);
if (amb){
hashMap.put("cat","ambulance");
hashMap.put("cat_id", AmbulanceDisplayData.getInstance().getId());
}
else if (bldng){
hashMap.put("cat","building");
hashMap.put("cat_id", BuildingDisplayData.getInstance().getId());
}
else if (dctr){
hashMap.put("cat","doctor");
hashMap.put("cat_id", DoctorDisplayData.getInstance().getId());
}
else if (evnt){
hashMap.put("cat","event");
hashMap.put("cat_id", EventDisplayData.getInstance().getId());
}
else if (hsptl){
hashMap.put("cat","hospital");
hashMap.put("cat_id", HospitalDisplayData.getInstance().getId());
}
else if (hse){
hashMap.put("cat","house");
hashMap.put("cat_id", HouseDisplayData.getInstance().getId());
}
else if (prsnl_job){
hashMap.put("cat","job");
hashMap.put("cat_id", PersonalJobsDisplayData.getInstance().getId());
}
else if (phr){
hashMap.put("cat","pharmacy");
hashMap.put("cat_id", PharmacyDisplayData.getInstance().getId());
}
else if (rnt_srvcs){
hashMap.put("cat","rent");
hashMap.put("cat_id", RentServicesDisplayData.getInstance().getId());
}
else if (sellbuy){
hashMap.put("cat","sell_buy");
hashMap.put("cat_id", SellBuyDisplayData.getInstance().getId());
}
else if (vhcle){
hashMap.put("cat","vehicle");
hashMap.put("cat_id", String.valueOf(TaxiDisplayData.getInstance().getId()));
}
return hashMap;
}
};
int sockettimeout=500000;
RetryPolicy retryPolicy=new DefaultRetryPolicy(sockettimeout,0,0);
stringRequest.setRetryPolicy(retryPolicy);
requestQueue.add(stringRequest);
}
例外：
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: org.json.JSONException: End of input at character 1 of
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at org.json.JSONTokener.syntaxError(JSONTokener.java:450)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at org.json.JSONTokener.nextValue(JSONTokener.java:97)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at org.json.JSONObject.<init>(JSONObject.java:156)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at org.json.JSONObject.<init>(JSONObject.java:173)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at com.example.jobinsabu.ohxee.report.Report$2.onResponse(Report.java:115)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at com.example.jobinsabu.ohxee.report.Report$2.onResponse(Report.java:105)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:60)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:30)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at android.os.Handler.handleCallback(Handler.java:739)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at android.os.Handler.dispatchMessage(Handler.java:95)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at android.os.Looper.loop(Looper.java:135)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5910)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at java.lang.reflect.Method.invoke(Native Method)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at java.lang.reflect.Method.invoke(Method.java:372)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405)
09-04 17:57:53.297 30241-30241/com.example.jobinsabu.ohxee W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)
09-04 17:57:53.407 30241-30241/com.example.jobinsabu.ohxee E/ViewRootImpl: sendUserActionEvent() mView == null