Solved

Problem with JSP application when calling Yahoo Geocoding API

Posted on 2008-06-23
13
340 Views
Last Modified: 2008-07-17
Hello,

I'm trying to use YAHOO geocoding API in my JSP page.
Basically I have a form with a text box to fill in 'address' and a button that will call YAHOO geocoding API. But many times I got HTTP response 400 but when I try to submit the request again (same 'address' values) it is ok. I'm trying to figure out whether this is related to the JSP part or not.I don't understand why sometime it works and sometime it doesn't. Maybe some of you guys might have similar experiences?

I think it randomly gives me bad request/ HTTP 400 when I do urlConnection.getInputStream().
I have never had this problem when I call this geocoding URL directly from the web browser.

Thanks in advance for all the help.
String url = "http://local.yahooapis.com/MapsService/V1/geocode?appid=APP_ID&city=Houston&state=TX&street=I-610&I-45"
URLConnection urlConnection = url.openConnection();
urlConnection.setConnectTimeout(120000);
urlConnection.setReadTimeout(120000);
BufferedReader reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));

Open in new window

0
Comment
Question by:rnicholus
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 7
  • 6
13 Comments
 
LVL 27

Expert Comment

by:rrz
ID: 21852245
Does this code work better ?

<%@ page import="java.util.*,java.net.*,java.io.*" %>
<%
  String url = "http://local.yahooapis.com/MapsService/V1/geocode?appid=APP_ID&city=Houston&state=TX&street=I-610&I-45";
  HttpURLConnection urlConnection = (HttpURLConnection)(new URL(url).openConnection());
  urlConnection.setConnectTimeout(120000);
  urlConnection.setReadTimeout(120000);
  urlConnection.setDoInput(true);
  urlConnection.connect();
  BufferedReader reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
  String line = null;
  while((line = reader.readLine()) != null)
  out.print(line + "<br/>");
%>
0
 

Author Comment

by:rnicholus
ID: 21857494
I still have the same issue.
0
 
LVL 27

Expert Comment

by:rrz
ID: 21858163
>I have never had this problem when I call this geocoding URL directly from the web browser.  
Ah that is the clue we needed. Try this page.

<%@ page import="java.util.*,java.net.*,java.io.*" %>
<%
  response.setContentType("text/xml");
  String url = "http://local.yahooapis.com/MapsService/V1/geocode?appid=APP_ID&city=Houston&state=TX&street=I-610&I-45";
  HttpURLConnection urlConnection = (HttpURLConnection)(new URL(url).openConnection());
  urlConnection.setDoInput(true);
  urlConnection.connect();
  BufferedReader reader = null;
  if(urlConnection.getResponseCode() ==  HttpURLConnection.HTTP_OK){
                reader = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
  } else {
          reader = new BufferedReader(new InputStreamReader(urlConnection.getErrorStream()));
      }
  String line = null;
  while((line = reader.readLine()) != null)out.print(line);
%>
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 

Author Comment

by:rnicholus
ID: 21860119
I followed your example:

I tried to put "I-610%20at%20I-45" (read: I-610 at I-45) in the street parameter and it gave me this on the first try.
------------------------------------------
The following errors were detected:
unable to parse location
------------------------------------------

But successful at the second try.

But other times it is okay on the first try.
0
 
LVL 27

Expert Comment

by:rrz
ID: 21861361
One thing to add to the end of my last posted code.
reader.close();  
Did you add
response.setContentType("text/xml");
to your code(like I did above) ?
That is all I got.   It works for me every  time. Maybe an expert will see something else.
0
 

Author Comment

by:rnicholus
ID: 21861913
I missed the response.setContentType("text/xml");
Let me give it a try.

Should I close the InputStream also?
0
 
LVL 27

Expert Comment

by:rrz
ID: 21862212
>Should I close the InputStream also?  
No, just add
reader.close();  
to end of my code.  
0
 

Author Comment

by:rnicholus
ID: 21877893
How is the response.setContentType("text/xml"); going to help?
0
 
LVL 27

Expert Comment

by:rrz
ID: 21879546
>How is the response.setContentType("text/xml"); going to help?  
It helped my testing. When the response was received in my browser(IE 7) it knew how to display the content.
What are you doing with the response ?
0
 

Author Comment

by:rnicholus
ID: 21910805
I read the response and if everything looks ok I populate the result (lat long) into a text box.
0
 

Author Comment

by:rnicholus
ID: 21910832
I think I saw the same error now in web browser (Mozilla):

http://local.yahooapis.com/MapsService/V1/geocode?appid=APPID&city=Houston&state=TX&street=I-610%20at%20I-10

Here's what I saw in the broswer:
-------------------------------------------------------------
<Error>

            The following errors were detected:
            
<Message>unable to parse location</Message>
</Error>

<!--
 ws01.search.re2.yahoo.com uncompressed/chunked Tue Jul  1 12:32:22 PDT 2008
-------------------------------------------------------------

but when I do view source, the result is there:
-------------------------------------------------------------
<?xml version="1.0"?>
<ResultSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="urn:yahoo:maps" xsi:schemaLocation="urn:yahoo:maps http://api.local.yahoo.com/MapsService/V1/GeocodeResponse.xsd"><Result precision="address"><Latitude>29.780510</Latitude><Longitude>-95.453857</Longitude><Address>I-610 &amp; I-10</Address><City>Houston</City><State>TX</State><Zip></Zip><Country>US</Country></Result></ResultSet>
<!-- ws01.search.re2.yahoo.com compressed/chunked Tue Jul  1 12:33:40 PDT 2008 -->
-------------------------------------------------------------

Very confusing. =(
0
 
LVL 27

Accepted Solution

by:
rrz earned 250 total points
ID: 21926057
Your lastest url
>http://local.yahooapis.com/MapsService/V1/geocode?appid=APPID&city=Houston&state=TX&street=I-610%20at%20I-10 
doesn't work when used directly in browser. Why don't you use a url like you used above in your original question ?
I don't what exactly yahoo wants in url. Maybe  
http://local.yahooapis.com/MapsService/V1/geocode?appid=APPID&city=Houston&state=TX&street1=I-610&street2=I-10     
But that is just a guess. I didn't read at yahoo.
0
 

Author Comment

by:rnicholus
ID: 22029196
Now, I see the problem:

For : http://local.yahooapis.com/MapsService/V1/geocode?appid=APPID&city=Houston&state=TX&street=I-610%20at%20I-10

Sometime it works, sometime it doesn't. I'm not sure why. I think it's something not right on the yahoo side. I will give you points for your assistance. Thank you.
0

Featured Post

Get HTML5 Certified

Want to be a web developer? You'll need to know HTML. Prepare for HTML5 certification by enrolling in July's Course of the Month! It's free for Premium Members, Team Accounts, and Qualified Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Code that checks the QuickBooks schema table for non-updateable fields and then disables those controls on a form so users don't try to update them.
The recent Petya-like ransomware attack served a big blow to hundreds of banks, corporations and government offices The Acronis blog takes a closer look at this damaging worm to see what’s behind it – and offers up tips on how you can safeguard your…
NetCrunch network monitor is a highly extensive platform for network monitoring and alert generation. In this video you'll see a live demo of NetCrunch with most notable features explained in a walk-through manner. You'll also get to know the philos…
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.
Suggested Courses

628 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question