Reading JSON data from a URL

Hi all,
I have a requirement of reading JSON data from a particular URL and using one of the value to set one property in iView. I need some info on how to get JSON data from a URL and extracting attribute's value from it.
What are the APIs that can be used for this?Can anyone provide a solution/working example in Java for this?
I am working on EP 7.3.

Hi Tarun,
JAXB should work for you. Take a look at this example:
JAXB JSON Example | Examples Java Code Geeks
Regards,
Tobias

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Reading binary data from a URL

Below are 2 snippets of code that read data from a binary file. A small sample of the output is shown at the bottom of each code fragment. The first one uses the URL class to read a remote file. The ouput for this fragment is incorrect in some cases. The second uses a stream reader to read a local file (the output is correct in this case). Both fragments read the same file.
As you can notice, some of the bytes read are the same in both cases. Some others are not.
I hope you can suggest how I can fix my URL version.
Thanks for your help.
Miguel
Program A: Reads a remote file with URL
URL url = new URL("http:localhost//myfile.awg");
URLConnection connection = url.openConnection();
BufferedReader bin = new BufferedReader(new InputStreamReader(connection.getInputStream()));
while(true) {
System.out.println(Integer.toHexString(bin.read()));
7d 3 0 0
22 30 3 3e
fd b9 2a 0
b2 2 0 1
Program B: Rads a local file
DataInputStream din = new DataInputStream(new BufferedInputStream
(new FileInputStream("c:\\inetpub\\wwwroot\\myfile.awg")));
while(true) {
System.out.println(Integer.toHexString(din.read()));
8e 3 0 0
99 30 3 3e
81 b9 2a 0
b2 2 0 1

What can I use instead?
Thanks,
MiguelBufferedInputStream as in Program B.

How to use the readLine() method when reading data from a URL?

Hello,
I have a URL which contains text input.
The only way to get the data from this URL is by opening a URL connection to it.
I would like to get the data from this URL but at the same time I would like to be able to use readLine() method of BufferedReader in order to read the data line by line.
My question is how do I combine between these two requirements in order to reed the data from the URL?
Roy

Hello Roy,
can you try out this code.
URL yahoo = new URL("http://www.yahoo.com/");
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        BufferedReader in = new BufferedReader(
                                new InputStreamReader(
                                yc.getInputStream()));
        String inputLine;
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        in.close();
Regards,
Mohan R

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thanks in advance.. URGENT
Waiting................................................ UR rpely..................

Hi,
People generally ignore "URGENT" pleas on this forum... it's only urgent to you.
You probably want to do a search for "web scraping"... basically parsing HTML pages as XML, and extracting the results.
Recently dcminter posted a link to a very good article from the IBM website, which you should read.
http://www-128.ibm.com/developerworks/java/library/j-jtp03225.html
regards,
Owen

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Lookup in XI is used to call the target data storage system and get data from there to your mapping programme.
In XI you can do Lookup in Message Mapping, Java Mapping and in XSLT Mapping. Previously Lookup in XI was system dependent. But now what ever the system are i.e. SAP system or non-sap system(Oracle,MS SQL etc) lookup API are same.
Overview of Lookup
- Lookups are used to identify/request the data from mapping program.
- It interrupt the process and looking for data which was stored in target system.
- It get that data and comeback to process and continue with that data.
Types of Lookups in XI
- JDBC Lookup: JDBC lookup is used for accessing data from database (non SAP).
- RFC Lookup: RFC lookup is used for accessing the SAP Data.
- SOAP Lookup: SOAP lookup is used for accessing data from Webservice
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Import package com.sap.aii.mapping.lookup.*;
Create connection to the target Database system.
// Determine communication channel created in ID
Channel channel = null;
channel = LookupService.getChannel("DB-SYSTEM-NAME","DB-CHANNEL-NAME");
// Get system accessor for the channel.
DataBaseAccessor accessor = null;
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Build the Query String.
Getting Result
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DataBaseResult resultSet = null;
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I have a VI and an attched .txt data file. Now I want to read the data from the .txt file and display it as an array in the front panel. But the result is not right. Any help?

I have a VI and an attched .txt data file. Now I want to read the data from the .txt file and display it as an array in the front panel. But the result is not right. Any help?
Attachments:
try2.txt ‏2 KB
read_array.vi ‏21 KB

The problem is in the delimiters in your text file. By default, Read From Spreadsheet File.vi expects a tab delimited file. You can specify a delimiter (like a space), but Read From Spreadsheet File.vi has a problem with repeated delimiters: if you specify a single space as a delimiter and Read From Spreadsheet File.vi finds two spaces back-to-back, it stops reading that line. Your file (as I got it from your earlier post) is delimited by 4 spaces.
Here are some of your choices to fix your problem.
1. Change the source file to a tab delimited file. Your VI will then run as is.
2. Change the source file to be delimited by a single space (rather than 4), then wire a string constant containing one space to the delimiter input of Read From Spreadsheet File.vi.
3. Wire a string constant containing 4 spaces to the delimiter input of Read From Spreadsheet File.vi. Then your text file will run as is.
Depending on where your text file comes from (see more comments below), I'd vote for choice 1: a tab delimited text file. It's the most common text output of spreadsheet programs.
Comments for choices 1 and 2: Where does the text file come from? Is it automatically generated or manually generated? Will it be generated multiple times or just once? If it's manually generated or generated just once, you can use any text editor to change 4 spaces to a tab or to a single space. Note: if you want to change it to a tab delimited file, you can't enter a tab directly into a box in the search & replace dialog of many programs like notepad, but you can do a cut and paste. Before you start your search and replace (just in the text window of the editor), press tab. A tab character will be entered. Press Shift-LeftArrow (not Backspace) to highlight the tab character. Press Ctrl-X to cut the tab character. Start your search and replace (Ctrl-H in notepad in Windows 2000). Click into the Find What box. Enter four spaces. Click into the Replace With box. Press Ctrl-V to paste the tab character. And another thing: older versions of notepad don't have search and replace. Use any editor or word processor that does.

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hi all,
i need to know how to read a data from USB port using java. any API are available for java ?.........please give your valuable ideas !!!!!!!!!
Advance Thanks!!

You can do this. Please use this link
[http://www.google.co.in/search?hl=en&client=firefox-a&rls=org.mozilla%3Aen-US%3Aofficial&hs=uHu&q=java+read+data+from+usb+port&btnG=Search&meta=&aq=f&oq=]
What research did you do of your own? Have you done some testing application and tried yourself??

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Any body can send me the code (with java code ,Excel sheet) to this mail id : [email protected]
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Sreenu,
[email protected],
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Hi All,
I have table with BLOB datatype contains a excel file. I have to read that data from excel and store into one table with all the fields in excel.
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Hi OraSuirya,
you can try with external tables .
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i Number,
n Varchar2(20),
m Varchar2(20)
organization external (
type oracle_loader
default directory ext_dir
access parameters (
records delimited by newline
fields terminated by ','
missing field values are null
location ('file.csv')
reject limit unlimited;
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Directory Creation syntax:
create or replace directory ext_dir as 'D:\oracle\user_dir\ext_dir';
grant read, write on directory ext_dir to <User>;
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Hi Experts,
How can i read the data from spool?
I need to read the data from the spool and should display on the screen?
Is there any FM to read the data from spool?
Sruthi.

hi please use this..
CALL FUNCTION 'RSPO_RETURN_ABAP_SPOOLJOB'
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    TABLES
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      not_abap_list        = 2
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hai to all of u...
here i have a problem where i have to read the data from the files without using any streams.
please guide me how to do this one,if possible by giving with an example
Thanks & Regard
M.Ramakrishna

Simply put, you can't.
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Hi BI people
My project is currently looking for a functionmodule that reads aggregated data from a cube/multiprovider.
I already have a functionmodule that reads data from a cube and returns it in a flat format. I have debugged this, but have not found any flags that can enable the OLAP functionality needed to perform the aggregation. The functionmodule is "RSDRI_INFOPROV_READ_RFC".
The situation is that I need to apply the aggregation logic of a profit center hierrarchy to the data I read from RSDRI_INFOPROV_READ_RFC, this means manually replicating the the OLAP engine functionality (keyfigure aggregation exception, ect.) and this is not an option with the available time/budget.
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|---- PC2 - $30
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PC2 $30
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But I need the data aggregated. An aggregation utilizing the hierarchy above will make the data look like this:
PC1 $60
PC2 $30
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Instead of building an aggregation program, it would be usefull if it was possible to extract aggregated data.
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Regards
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Thx Olivier,
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HI,
I have a table with following structure
Test_Mail(Attachment BLOB,Attachmentname varchar2(255),FileSize number)
The data in the table is like
Attachment|Attachmentname|FileSize
BLOB|test.txt|1236
I wants to read the data from the BLOB attachment in to new file.
can any one help me in doing this with plsql??
Thanks in advance,
Balaji tk.
Edited by: Balaji.tk on Jan 9, 2011 9:28 PM

May be something like this ?
DECLARE
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   l_buffer     RAW (32767);
   l_amount     BINARY_INTEGER     := 32767;
   l_pos        INTEGER            := 1;
   l_blob       BLOB;
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BEGIN
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FOR rec IN (
SELECT attachment   l_blob
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     --Your where condition to find the row.
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LOOP
   l_blob_len := DBMS_LOB.getlength (rec.l_blob);
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commit;
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Hi All,
I have requirement to read the data from one component into another component while creating the service order. Here are the details.
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Refer the attachments for the component link..
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IF iv_index IS NOT INITIAL.
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     lr_current ?= lr_iterator->get_by_index( iv_index ).
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Thanks,
Sapsar.

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