Calling web service from forms..

Question

Forms Gurus,
I am using this demo to call the webservice in Forms.
http://www.oracle.com/technology/obe/obe_as_10g/deploy/callws_fromforms/forms_webservice.htm#r1
I am using a simple button to call get the conversion rate from the web service.
But my code is not doing anything. I used some insert statements to see where my code is failing and is as follows:
DECLARE
jo ora_java.jobject;
rv ora_java.jobject;
EX ora_java.jobject;
v_num NUMBER;
BEGIN
INSERT INTO XXIPAY_WEB_TMP VALUES (111,'before',20);
commit;
jo:= CurrencyExchangeServiceStub.new;
INSERT INTO XXIPAY_WEB_TMP VALUES (111,'between',20);
commit;
rv:= CurrencyExchangeServiceStub.getRate(jo,'USA','great britain');
INSERT INTO XXIPAY_WEB_TMP VALUES (111,'after',20);
commit;
EXCEPTION
WHEN ORA_JAVA.JAVA_ERROR then
fnd_message.set_string('Unable to call out to Java, '||ORA_JAVA.LAST_ERROR);
fnd_message.show;
     INSERT INTO XXIPAY_WEB_TMP VALUES (111,'java_error',20);
     commit;
WHEN ORA_JAVA.EXCEPTION_THROWN then
     EX:=ORA_JAVA.LAST_EXCEPTION;
     message(Exception_.toString(EX));
     INSERT INTO XXIPAY_WEB_TMP VALUES (111,'exception',20);
     commit;     
END;
After pushing the button I am getting the following values from the table:
111 before 20
111 java_error 20
I am importing currencyexchangestub.class, java.lang.Float.class and java.lang.Exception.class.
My code is failing before executing the new function.
Where am I doing wrong? Any help is highly appreciated.
Thanks in advance.
Fubu

Answer 1

Hey Francois,
Everything went fine according to demo until I clicked on the button to get the conversion rate. The button is inserting the "java_error" row in the table and giving out this error:
SoapException: faultCode=SOAP-ENV:Protocol;msg=Unsupported response content type "text/html;, must be: "text/xml". Response was: <! DOCTYPE HTM
I am attaching the PL/SQL package generated out of the java class. Hope this is correct:
PACKAGE BODY CurrencyExchangeServiceStub IS
-- DO NOT EDIT THIS FILE - it is machine generated!
cls ORA_JAVA.JCLASS;
fid ORA_JAVA.JFIELD;
mid ORA_JAVA.JMETHOD;
args JNI.ARGLIST;
-- Constructor for signature ()V
FUNCTION new RETURN ORA_JAVA.JOBJECT IS
BEGIN
cls := JNI.GET_CLASS('mypackage1/CurrencyExchangeServiceStub');
insert into xxipay_web_tmp values (222,'beforemethod',12);
commit;
mid := JNI.GET_METHOD(FALSE, cls, '<init>', '()V');
insert into xxipay_web_tmp values (222,'aftermethod',12);
commit;
args := NULL;
RETURN (JNI.NEW_OBJECT(cls, mid, args));
END;
PROCEDURE main(
a0 ORA_JAVA.JARRAY) IS
BEGIN
cls := JNI.GET_CLASS('mypackage1/CurrencyExchangeServiceStub');
mid := JNI.GET_METHOD(TRUE, cls, 'main', '([Ljava/lang/String;)V');
args := JNI.CREATE_ARG_LIST(1);
JNI.ADD_OBJECT_ARG(args, a0, JNI.GET_CLASS('[Ljava/lang/String;'));
JNI.CALL_VOID_METHOD(NULL, mid, args);
END;
FUNCTION getRate(
obj ORA_JAVA.JOBJECT,
a0 VARCHAR2,
a1 VARCHAR2) RETURN ORA_JAVA.JOBJECT IS
BEGIN
cls := JNI.GET_CLASS('mypackage1/CurrencyExchangeServiceStub');
mid := JNI.GET_METHOD(FALSE, cls, 'getRate', '(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/Float;');
args := JNI.CREATE_ARG_LIST(2);
JNI.ADD_STRING_ARG(args, a0);
JNI.ADD_STRING_ARG(args, a1);
RETURN JNI.CALL_OBJECT_METHOD(obj, mid, args);
END;
Please let me know where I am doing wrong.
One more thing I would like to mention is that my form builder is on UNIX server and JDeveloper is on my local machine. So I am ftp'ing the java class and the deployed JAR file into my home directory on UNIX server in "binary" mode. And in the CLASSPATH I am mentioning my home directory,So that the java class gets picked up when I import the Java class.
Thanks in advance,