Problem in tutorial "Integrating RESTFul Web Services"

JDeveloper/ADF downloaded March 2012, JDeveloper Studio Edition Version 11.1.2.1.0 and full ADF download bundle.
I have run through the JDeveloper/ADF tutorial titled, "Integrating RESTFul Web Services". When I get to Step 3, "Test the Web Service" the application fails to deploy. The essential error is, "Caused by: java.lang.ClassNotFoundException: javax.ws.rs.ext.RuntimeDelegate". I done it from scratch 3 times to make sure I was not missing any steps.
An clues would be appreciated.
Thank you,
Russ Ryan

Thanks for the suggestions. I tried both of them:
- including JAR files under lib directly
- including the JAX-RS libraries from the Libraries selection.
Still getting the error about not finding javax.ws.rs.ext.RuntimeDelegate.
I downloaded the finished project from the tutorial (http://docs.oracle.com/cd/E18941_01/tutorials/jdtut_11r2_53/labs/restsolution.zip), did a rebuild and tried the "Test Web Service". I got the same error. I'm wondering if it is a problem with my environment.
Thanks,
Russ Ryan

Similar Messages

Problem with RESTful web service

I am running into a problem with Flex Web Services (REST) in trying to get the proper format returned. I can see that the HTTP header is set to
Accept: */*;
rather than
Accept: application/xml
when sending the request. The web service was generated via the web services HTTP data services wizard. I edited it to set the resultFormat to xml
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Hi,
I have posted a simple application with the RESTful reference:
http://apex.oracle.com/pls/apex/f?p=13758
I can give you full privileges on this so you can look at the WEB service reference. Shall I send to you separately for login user?
It is using the RESTful service: http://apex.oracle.com/pls/apex/nd_pat_miller/demo/employee/{deptno}
This RESTful service tests fine when I test from within the RESTful web service module of the Workspace.
I based this on the Video demo tutorial for RESTful web service that Oracle published for 4.2 release. The video seemed to exclude the {deptno} in the URL but when I try that, it doesn't work either.
This is the error I am getting when I run this on my Apex environment: (it, of course, will not run the web service in the apex.oracle.com environment)
class="statusMessage">Bad Request</span>
</h3>
</div>
</div>
<div id="xWhiteContentContainer" class="xContentWide">
<div class="xWhiteContent">
<div class="errorPage">
<p>
<ul class="reasons"><li class="badRequestReason"><span class="target" style="display:none;">uri</span><span class="reason">Request path contains unbound parameters: deptno</span></li>
</ul>Thanks,
Pat
Edited by: patfmnd on May 8, 2013 3:33 AM

Problem with RESTful web service with header value

Hi,
I am on Apex 4.2.2 and Listener 2.1 and the listener is on WEblogic.
I succeeded to get a RESTful web service working in an application with no header to obtain a full set of data. The data set is very large, so I am now just trying to set up a web service to get a set of data based on a student ID.
I followed the examples shown in the RESTful web service module of SQL Workshop and set up a handler of this type:
https://ourweblogicserver/apex/bnr/ace/students/course_grades/{stid}
The test for this handler succeeded both for JSON output and CSV output in the Workshop test environment.
However, when I try it from a Web Service Reference that I created for my application following what looked like the same approach used on the example video, I get NO data back. If I put a 'stid' directly into a URL of a web browser and do the basic authentication I get the data!!
This is what I have for the Web service reference:
https://ourweblogicserver/apex/bnr/ace/students/course_grades/{stid}
Basic auth set to Yes -- and this is working -- I am able to authenticate
HTTP method Get
output format Text
no response Xpath
no response namespace
defaults for new record and parameter delimiter
NO REST input parameters
Output set for all the fields in the data set queried (same set of data as in my rest service which does not have any http header)
REST HTTP Header : Name stid
I there something I am missing. I am not sure how to troubleshoot this further.
Pat

Hi,
I have posted a simple application with the RESTful reference:
http://apex.oracle.com/pls/apex/f?p=13758
I can give you full privileges on this so you can look at the WEB service reference. Shall I send to you separately for login user?
It is using the RESTful service: http://apex.oracle.com/pls/apex/nd_pat_miller/demo/employee/{deptno}
This RESTful service tests fine when I test from within the RESTful web service module of the Workspace.
I based this on the Video demo tutorial for RESTful web service that Oracle published for 4.2 release. The video seemed to exclude the {deptno} in the URL but when I try that, it doesn't work either.
This is the error I am getting when I run this on my Apex environment: (it, of course, will not run the web service in the apex.oracle.com environment)
class="statusMessage">Bad Request</span>
</h3>
</div>
</div>
<div id="xWhiteContentContainer" class="xContentWide">
<div class="xWhiteContent">
<div class="errorPage">
<p>
<ul class="reasons"><li class="badRequestReason"><span class="target" style="display:none;">uri</span><span class="reason">Request path contains unbound parameters: deptno</span></li>
</ul>Thanks,
Pat
Edited by: patfmnd on May 8, 2013 3:33 AM

Problem getting RESTful web service reference working with header value

Hi,
I posted this on Apex Listener forum but since I am not sure problem is with my Application RESTful web service reference or a Listener issue, I am posting here as well:
I am on Apex 4.2.2 and Listener 2.1 and the listener is on WEblogic.
I succeeded to get a RESTful web service working in an application with no header to obtain a full set of data. The data set is very large, so I am now just trying to set up a web service to get a set of data based on a student ID.
I followed the examples shown in the RESTful web service module of SQL Workshop and set up a handler of this type:
https://ourweblogicserver/apex/bnr/ace/students/course_grades/{stid}
The test for this handler succeeded both for JSON output and CSV output in the Workshop test environment.
However, when I try it from a Web Service Reference that I created for my application following what looked like the same approach used on the example video, I get NO data back. If I put a 'stid' directly into a URL of a web browser and do the basic authentication I get the data!!
This is what I have for the Web service reference:
https://ourweblogicserver/apex/bnr/ace/students/course_grades/{stid}
Basic auth set to Yes -- and this is working -- I am able to authenticate
HTTP method Get
output format Text
no response Xpath
no response namespace
defaults for new record and parameter delimiter
NO REST input parameters
Output set for all the fields in the data set queried (same set of data as in my rest service which does not have any http header)
REST HTTP Header : Name stid
I there something I am missing. I am not sure how to troubleshoot this further.
I also tried exactly following the example shown on the Oracle Video for RESTFul web services at
http://www.youtube.com/watch?v=gkCvd6P8_OU
and I can't get the 2nd example to work either-- where the header has the bind variable parameter.
Pat

I was able to resolve the problem -- in the latest version of the RESTful web service that I created, I had left out the creation of the Header Parameter bind variable. Once I did that everything works fine!! I was able to test in the application and got the record of an individual student.
Thanks,
PM

Problems with Community Bridge (MS REST-Web-Service)

Hello,
few days ago I started experiencing problems while connecting to Microsoft TechNet Forums
by using Community Bridge 3 (MSDN/Social/Partner) and "Forté
Agent" client. I get the error below from bridge debugger while retrieving headers from Windows Server General Forums
I subscribed:
Update threads since (null)
CreateRequest: https://forumsapi.contentservices.msdn.microsoft.com/threads/?forumId=0b3d1d0b-dfd6-4df9-a87a-80d34d658a5f&sort=createdDate&order=desc&page=1
WebException: JSON: {
"errors": [
"No results found."
RequestTime: 8348 ms
Note: The error also appears from any other forum.
So I sent bridge debugger collected information to Jochen Kalmbach (the developer).
The error seems to come from the MS REST-Web-Service.
Could you confirm the problem ?
Bye,
Luca
Disclaimer: This posting is provided AS IS with no warranties or guarantees, and confers no rights. Whenever you see a helpful reply, click on [Vote As Help] and click on [Mark As Answer] if a post answers your question.

You might also check on that over here.
http://communitybridge.codeplex.com/discussions
Regards, Dave Patrick ....
Microsoft Certified Professional
Microsoft MVP [Windows]
Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights.

Hello REST web service example deployment fails when using EJB

I was able to successfully deploy the hello REST web service example. But when I attempted to lookup an EJB via the following code I get an error message.
try {
ic = new InitialContext();
DirectoryBean db = (DirectoryBean)ic.lookup("java:comp/env/ejb/DirectoryBean");
} catch (NamingException ex) {
ex.printStackTrace();
Here is the error message in the NetBeans console window:
Deploying application in domain failed; Error loading deployment descriptors for module [hello] -- com.sun.enterprise.deployment.annotation.context.WebBundleContext cannot be cast to com.sun.enterprise.deployment.annotation.context.EjbContextat com.sun.enterprise.deployment.annotation.AnnotationInfo@15f1fa0
D:\java\Sun\swdp-tutorial-1.0\examples\rest\hello\nbproject\build-impl.xml:450: Deployment error:

I think the problem may be that the SimpleServlet example uses an apt feature to generate a web.xml which will replace any web.xml you already have in the project (and lose any references etc you might have in it). To work around this problem first copy the necessary lines from the web.xml in the generates .war file - they should look something like this:
<servlet>
<servlet-name>RESTBeans Application</servlet-name>
<servlet-class>com.sun.ws.rest.impl.container.servlet.ServletAdaptor</servlet-class>
<init-param>
<param-name>resourcebean</param-name>
<param-value>com.sun.ws.rest.samples.servlet.resources.RESTBeansResources</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>RESTBeans Application</servlet-name>
<url-pattern>/restbean/*</url-pattern>
</servlet-mapping>
Add these to your project web.xml, replacing any lines that look similar (the web.xml in the sample project has these lines that you'll need to replace:
<servlet>
<servlet-name>ServletAdaptor</servlet-name>
<servlet-class>com.sun.ws.rest.impl.servlet.ServletAdaptor</servlet-class>
<init-param>
<param-name>resources</param-name>
<param-value>test1</param-value>
</init-param>
</servlet>
<servlet-mapping>

<servlet-name>ServletAdaptor</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
Now you need to turn off automatic web.xml generation by adding <option key="noservlet"/> to the apt task option in build.xml (look for the apt child of the -pre-compile task in build.xml).
Clean and rebuild and make sure that the web.xml in the generated .war file now matches the project web.xml file.
Marc.

HTTP error when trying to access RESTful web service from application

Hi,
We are getting the following error when trying to access a RESTful web service coming from Apex workspace 4.2.1 and Apex listener 2.1:
ORA-29273: HTTP request failed ORA-06512: at "SYS.UTL_HTTP", line 1130 ORA-29024: Certificate validation failure
In the Debug report, besides the above I also see:
error_backtrace: ORA-06512: at "SYS.UTL_HTTP", line 1130 ORA-06512: at "APEX_040200.WWV_FLOW_WEB_SERVICES", line 543 ORA-06512: at "APEX_040200.WWV_FLOW_WEB_SERVICES", line 1164 ORA-06512: at "APEX_040200.WWV_FLOW_PROCESS", line 396
We get that error whether we use https or http in the URI pointing to the web service. When I test the Web Service in Workspace RESTful service GUI, I get the data back. When I go build an application with a report calling the RESTful Web Service I get that error. Both the Application and the Workspace RESTful services are on the same Apex environment and even the same workspace.
What is odd is that I can actually put the URL of the web service into a browser and I get the data: (using the demo hr data in sample RESTful services.)
IN browser-- https://weblogic-dev.edu/apex/ace/hr/empinfo/
yields:
7839,KING,PRESIDENT,,1981-11-17T05:00:00Z,5000,,10 7698,BLAKE,MANAGER,7839,1981-05-01T04:00:00Z,2850,,30 7782,CLARK,MANAGER,7839,1981-06-09T04:00:00Z,2450,,10 7566,JONES,MANAGER,7839,1981-04-02T05:00:00Z,2975,,20 7788,SCOTT,ANALYST,7566,1982-12-09T05:00:00Z,3000,,20 7902,FORD,ANALYST,7566,1981-12-03T05:00:00Z,3000,,20 7369,SMITH,CLERK,7902,1980-12-17T05:00:00Z,800,,20 7499,ALLEN,SALESMAN,7698,1981-02-20T05:00:00Z,1600,300,30 7521,WARD,SALESMAN,7698,1981-02-22T05:00:00Z,1250,500,30 7654,MARTIN,SALESMAN,7698,1981-09-28T04:00:00Z,1250,1400,30 7844,TURNER,SALESMAN,7698,1981-09-08T04:00:00Z,1500,0,30 7876,ADAMS,CLERK,7788,1983-01-12T05:00:00Z,1100,,20 7900,JAMES,CLERK,7698,1981-12-03T05:00:00Z,950,,30 7934,MILLER,CLERK,7782,1982-01-23T05:00:00Z,1300,,10
Any ideas on what would be causing the Error above in our application?
Thanks,
Pat
Edited by: patfmnd on Mar 11, 2013 3:25 PM
In reviewing the above error, I think we are realizing that we have to have the Weblogic layer SSL cert (actually the CERT from our BigIP load balancer which also does our SSL termination) imported into the Oracle server wallet where Apex is installed. Am I correct?
PM

We resolved our problem. The Apex Administrative Guide made us realize that we had to set up Wallet path in the Instance. This required working with DBAs to follow the Advanced networking guide to get the wallet set up on our server. We then added that path to the Instance configuration. (Manager Instance --> Instance settings). We ran into another other issue related to our implementation of CAS but were able to resolve that, and 'voila' were able to get the sample RESTful service consumed by our application!!
Now to the task of figuring out how to get Basic Auth working between client application and RESTful web service. If anyone has that working, let us know!!
It would be helpful if in the documentation of the Apex 2.x listener or Apex install/configuration there was clear reference to the above steps required for HTTPS access to RESTful web services.
Pat

Issue with Calling Rest Web Service using Designer workflow

Hello all
I am calling a Rest web service- HTTP Post (yammer API)-
http://www.yammer.com/api/v1/messages.json?data-app-id=myappid&group_id=groupid&body=MyPost in yammer using sharepoint 2013 designer workflow.(My Requirement is to create a yammer post when I approve an item in sharepoint).
but my header parameters are creating issue while executing workflow.
Currently I have these many parameters configured in request header
Accept -application/json; odata=verbose
Content Type -application/json; odata=verbose
content length header -255
Is there anything wrong or I need to additionally pass some values in call web service action?
Any help would be highly appreciated

Hi Mahesh,
One you are missing is authentication token or credentials.
Please refer to the following articles.
http://www.cleverworkarounds.com/2014/02/05/tips-for-using-spd-workflows-to-talk-to-3rd-party-web-services/
A Series of articles related to Web Service in SPD Workflow
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 1
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 2
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 3
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 4
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 5
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 6
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 7
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 8
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 9
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 10
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 11
Trials or tribulation?
Inside SharePoint 2013 workflows–Part 12
Please don't forget to mark it answered, if your problem resolved or helpful

Protecting a REST web service with Policy Agent

I have deployed a REST web service in Glassfish using Jersey Annotations. A UI in the same Glassfish instance is protected by a policy agent that forces users through a login page. I would like to protect the REST web service with BASIC Authentication using the same policy agent. Is this possible? Is there supporting documentation?

Hi Daniel,
When you publish a message through Rest, hope your Restful service will receive/process the posted message?
So
YourBizTalk -->(Post Message to)-->RestFulService
From the error message, "the published message could not be routed because no subscribers were found.", it seems like the this Restful service is a
wrapper (or service interface) for BizTalk at client end( where message has been posted thru Rest) and actual posted message is “processed” by BizTalk and the error "" is from BizTalk "after" Rest. This message says the message you posted
through rest is not found subscription at their end.
So
YourBizTalk -->(Post Message to)-->RestFulService -->Clients'BizTalk.
Here problem is at Clients'BizTalk as shown where the posted message to their BizTalk is not processed because no subscription has been found.
If this answers your question please mark it accordingly. If this post is helpful, please vote as helpful by clicking the upward arrow mark next to my reply.

REST web-service invocation gives error ORA-29266: end-of-body reached

We are trying to consume a REST web-service. We send county code and country name to the WS, it then inserts the data and sends us a response in XML.
I used this PL/SQL code to invoke the rest WS.
http://blog.warp11.nl/2011/07/calling-a-rest-webservice-with-plsql/
Problem is there is an error ORA-29266, when processing the utl_http.read_text(t_http_resp, t_respond);
The error means that there is no response. i.e. NULL response.
We can PING the service the WS is, so we are not using authentication. Could this be the problem?
Any help could be greatly appreciated.
Edited by: user12240205 on Aug 5, 2011 3:33 AM

We are trying to consume a REST web-service. We send county code and country name to the WS, it then inserts the data and sends us a response in XML.
I used this PL/SQL code to invoke the rest WS.
http://blog.warp11.nl/2011/07/calling-a-rest-webservice-with-plsql/
Problem is there is an error ORA-29266, when processing the utl_http.read_text(t_http_resp, t_respond);
The error means that there is no response. i.e. NULL response.
We can PING the service the WS is, so we are not using authentication. Could this be the problem?
Any help could be greatly appreciated.
Edited by: user12240205 on Aug 5, 2011 3:33 AM

Error in REST Web Service with Output Format as Text

Hi All,
I am referencing a REST web service, and can successfully connect to it and retrieve results with the Output Format set to XML.
I don't need the individual node values, I just want to capture the entire XML as a string, and populate a table column with it.
When I create a new Rest web service reference, with Output Format set to Text, and then create a form/report to run it, I get the following error when I click 'Submit':
ORA-06550: line 1, column 63: PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following: ( - + case mod new not null others avg count current exists max min prior sql stddev sum variance execute forall merge time timestamp interval date pipe
Error Error sending request.
There are control characters in the XML, but surely this is handled by Apex, so I'm not sure what the problem is here.
Any ideas most welcome.
Thanks,
Rhodri

Rhodri:
Application Express expects text response to actually be text response, delimited by other characters denoting a new value, and a new record set. You should leave the response as XML. The XML document will be stored in the xmltype01 column of the collection you specify. You can then convert that xmltype01 column to a clob if you like using .toClobVal().
Regards,
Jason

REST Web Service Output Parameter not working in POST Handler

I've created a RESTful Web Service in Oracle Apex, using a POST method as "handler". I've setup 11 input parameters which all work fine, it is my one output parameter that does not return successfully.
Here is detail on the Output Paramter
Name: returns
Bind Variable Name: :returns
Access Method: OUT
Source Type: Response
Parameter Type: String
The actual source is a call to a pl/sql package that returns a value that I set :returns equal to (eg :returns := v_result). I've tried this with Source Type Header and still the same result, 'no output'.
I see APEX is calling wwv_flow_api.create_restful_param to generate the parameters (for importing), is there any documentation on this procedure?
How can I get this output parameter to return something in the response?
The request accepts a Json payload.
Any help greatly appreciated
Thanks,
James

Solved my own problem :returns does not work needs to be returns
Does Not Work
Name: returns
Bind Variable Name: :returns
Access Method: OUT
Source Type: Response
Parameter Type: String
Does Work
Name: returns
Bind Variable Name: returns
Access Method: OUT
Source Type: Response
Parameter Type: String

REST Web Service References: Can't run Google APIS

Hello Everyone!
I am learning on how to integrate REST web service reference in APEX application. I found a tutorial video at YouTube on 'Creating and Using a RESTful Web Service in Application Express 4.2', which found to be very helpful and easy to do on my sample app. The REST Web Service URL:
http://maps.googleapis.com/maps/api/geocode/xml?address=san%20fancisco&sensor=false
But my application throws an error as below:
1 error has occurred
ORA-29273: HTTP request failed ORA-06512: at "SYS.UTL_HTTP", line 1130 ORA-24247: network access denied by access control list (ACL)
After going through some of the posts here at OTN, I have granted access as follows:
GRANT EXECUTE ON SYS.UTL_HTTP TO ETI;
GRANT EXECUTE ON SYS.UTL_INADDR TO ETI;
GRANT EXECUTE ON SYS.UTL_TCP TO ETI;
GRANT EXECUTE ON SYS.UTL_SMTP TO ETI;
GRANT EXECUTE ON SYS.UTL_URL to ETI;
GRANT EXECUTE ON SYS.UTL_XML to ETI;
Second thing I did was, created and assigned ACL:
begin
dbms_network_acl_admin.create_acl (
    acl         => 'googleapis.xml',
    description => 'Google Translate API',
    principal   => 'CONNECT',
    is_grant    => true,
    privilege   => 'connect',
    start_date => null,
    end_date    => null
dbms_network_acl_admin.add_privilege (
    acl       => 'googleapis.xml',
    principal => 'CONNECT',
    is_grant => true,
    privilege => 'connect'
dbms_network_acl_admin.assign_acl (
    acl => 'googleapis.xml',
    host => 'ajax.googleapis.com'
dbms_network_acl_admin.assign_acl (
    acl => 'googleapis.xml',
    host => 'maps.googleapis.com'
end;
All these statements were executed on my database with out any error, even though not helping my web service reference to work.
Any idea how can I get my Google API REST Web service working, what is the thing I'm missing here?

I apologize for the lack of information.
I thought I had included a list of schemas for you to try out.
At first, (due to the GRANT ___ TO ETI;) I thought you were writing your own Web Service parser in PL/SQL.
(If that was the case, than ETI would need be part with the ACL)
Then, I realized,you were using the built in APEX functionality.
In this case, try adding your APEX_{version} schema as part of the ACL.
I'm not sure if this will work (I haven't tried it).
However, I do know you need to add the APEX_{version} to the ACL if you use the LDAP Authentication.
finding APEX_{version}
select comp_id, version, status, schema
from dba_registry
where comp_id='APEX'
MK

REST web service using PL/SQL

Hello,
I am trying to learn how a REST web service can be created using PL/SQL and how it can be used.
I am using this as a starting point.
Also, I am using the pre-build "Oracle Developer Days" setup for this (which means I have 11.2 version of oracle database installed).
I have done all the steps mentioned in the above blog post but when I try to access the web service in browser, I get the
"404 Not found - The requested URL /devtest/rest-demo/departments was not found on this server" message.
Here is my DAD setup :
SQL> declare
l_name dbms_epg.varchar2_table;
l_value dbms_epg.varchar2_table;
begin
DBMS_EPG.GET_ALL_DAD_ATTRIBUTES (dad_name => 'devtest', attr_names => l_name, attr_values => l_value);
for i in l_name.first..l_name.last
loop
    dbms_output.put_line(l_name(i)||' => '||l_value(i));
end loop;
end;
2    3    4    5    6    7    8    9   10   11 database-username => HR1
path-alias => rest-demo
path-alias-procedure => rest_handler.handle_requestI have created the package and procedures as mentioned in that blog post
SQL> desc hr1.rest_handler
PROCEDURE HANDLE_REQUEST
Argument Name                  Type                    In/Out Default?
P_PATH                         VARCHAR2                INHave I missed something ?
Any help will be appreciated.
Thanks

Probably an security issue, I guess. The article (http://ora-00001.blogspot.com/2009/07/creating-rest-web-service-with-plsql.html) mentioned is a very good one (if not only I like what the site has become in recent years - much good tips and articles). As an alternative for your problems, have a look at the explaination of how Tim Hall has done it...
http://www.oracle-base.com/articles/misc/XMLOverHTTP.php
Edited by: Marco Gralike on Nov 21, 2011 11:31 AM

JSP page communicating with a MySQL db throw a Glassfih RESTful web service

Hello;
I am en newbie in servlet/JSP stuffs, and as I said in the subject, i'm looking for the best way to make my JSP pages communicate with my db. My application already consists in a RESTful web service that, just for the record, communicates with a JavaFX Client.
(>What i'm looking for is to write datas in my database through this JavaFX client, and it seems like this can only works by passing through a intermediate scripting language like JSP).
To get back on my issue, I don't really know about JSP. I read many tutorials but it still seems confusing to me. Can somebody show me, by a detailed example, how I can do that ? (Preferably by using jsp beans like "usebean", that i find very useful).
Thanks a lot.

don't make your JSP 'communicate' with a database. These tasks are for servlets and specific business logic classes which you can use in your servlets.
To connect to a database, use the JDBC API. Plenty of tutorials about that around the net.
I don't really know about JSPYeah well, you already identified your problem then. The solution is very simple: learn. To be able to learn, get a good resource, such as a book and not some vague tutorials that you find on the net. For example, I always recommend this free online book:
[core servlets 2nd edition|http://pdf.coreservlets.com]

Problem in tutorial "Integrating RESTFul Web Services"

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