Servlets and Beans
I am developing a website using JSP, beans and servlets.
The thing I need to know is can you access the variables stored in a session wide bean (those stored using set/get methods) from within a servlet?
Many Thanks
J-P
Hi well...
I put these in my jsp
<jsp:useBean id="varTmp" type="bean.VarTmp" class="bean.VarTmp" scope="session"></jsp:useBean>
<I></I>
<BR>
<jsp:setProperty name="varTmp" property="usrcod" value="<%= request.getRemoteUser() %>" />
<jsp:setProperty name="varTmp" property="empnom" value="<%= _prb %>" />
<jsp:setProperty name="varTmp" property="wstcod" value="<%= request.getRemoteAddr() %>" />
ok, but in my servlet in the doGet() I put this way...
HttpSession ses = req.getSession(true);
bean.VarTmp t = (bean.VarTmp)ses.getAttribute("varTmp");
wempcod = t.getEmpcod();
wusrcod = req.getRemoteUser();
and didn't work....
what's the problem?
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Two phase commit and bean managed transactions
To all the Transaction GURUS!
Hi guys (-and gals).
I've been doing J2EE for quite a while, but today was my first at
XA-Transactions and Bean Managed Transactions.
Why am I doing this?
====================
Well I have to be able to controll the transactionalbehaviour of my
bean
during runtime, since some bean calls would cause a transactional
overflow due to the stress they would cause to the system, whereas
smaller bean calls need to run in one transaction.
-> Therefore I need Bean Managed Transactions
Since the bean does a call on two Database Connections it has to use a
XA-Transaction.
-> Therefore I need XA-Transactions.
Abstract
========
- I just can't get a User TransAction into the right Status it stays
in 'STATUS_NO_TRANSACTION' all the time
- Therefore the SQL Commands can be comitted 'java.sql.SQLException:
Does not support SQL execution with no global transaction'
- Therefore I can't do a rollback 'java.lang.IllegalStateException:
Transaction does not exist'
- Therefore I wrote this mail.
I don't want to be a smart-"ass" writing such a detailed and indepth
mail. I just would like to show that I tried, and would like to have
some replies from you guys.
Below are my configurations, code and logfiles.
Thanx for taking your time and hope that the other people may learn
something as well.
cu
Stefan
Scenario
========
used Software
Bea Weblogic (WL) 6.0 SPx (not real sure which SP i have)
Oracle 8.1.6 using the API-Version 8
I configured the system as follows:
(ofcourse I 'xxx'ed out all of the confidential data, sorry guys;-))
excerpt from:
config.xml
<JDBCConnectionPool CapacityIncrement="5"
DriverName="oracle.jdbc.driver.OracleDriver" InitialCapacity="2"
LoginDelaySeconds="1" MaxCapacity="5" Name="oraclePool"
Properties="user=xxx;password=xxx;dll=ocijdbc8;protocol=thin"
RefreshMinutes="5" Targets="fbsserver" TestConnectionsOnRelease="true"
TestTableName="languages" URL="jdbc:oracle:thin:@xxx:1521:xxx "/>
<!-- Since this is our Main Datasource I would not like to use a XA
Transaction due to performance Issues
and the TxDataSource:
-->
<JDBCTxDataSource EnableTwoPhaseCommit="true"
JNDIName="finstral.datasource.fbs" Name="finstral Content Datasource"
PoolName="oraclePool" Targets="fbsserver"/>
<!-- no comment required -I hope.
Next comes the "special" Pool
-->
<JDBCConnectionPool CapacityIncrement="5"
DriverName="weblogic.jdbc.oci.xa.XADataSource" InitialCapacity="1"
LoginDelaySeconds="1" MaxCapacity="2" Name="oracleSecurityPool"
Properties="user=xxx;password=xxx;server=xxx.xxx.xxx"
RefreshMinutes="5" Targets="fbsserver" TestConnectionsOnRelease="true"
TestTableName="Users" SupportsLocalTransaction="true"/>
<!-- Well since there can only be one none XARessourceManager involved
in a 2PC
(keyword: Two Phase Commit) I will have to use a XACapable Driver for
the other
Datasource. Due to all the bugs in the oracle.xxx driver. I'll be
using the jdriver for oci.
I activated 'SupportsLocalTransaction' hoping it would solve my
problem - without effect. I just left in there now, since it made
sense me. Not?
Again the TxDataSource:
-->
<JDBCTxDataSource EnableTwoPhaseCommit="true"
JNDIName="finstral.datasource.fbssecurity" Name="finstral Security
Datasource" PoolName="oracleSecurityPool" Targets="fbsserver"/>
<!-- The System starts right up and can locate the test tables and
everything. So I think all of this stuff is working here -->
ejb-jar.xml
<ejb-jar>
<enterprise-beans>
<session>
<ejb-name>TPCTestBean</ejb-name>
<home>de.sitewaerts.futuna.common.test.tpcbean.TPCHome</home>
<remote>de.sitewaerts.futuna.common.test.tpcbean.TPC</remote>
<ejb-class>de.sitewaerts.futuna.common.test.tpcbean.TPCBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Bean</transaction-type>
</session>
</enterprise-beans>
<assembly-descriptor/>
</ejb-jar>
<!-- Originally I had the assembly-descriptor full of transaction
requirements. I thought since
the bean is handling all of the transaction stuff itself, it might get
confused by the 'container-transaction'
properties, and deleted them. Do I need them anyway?-->
weblogic-ejb-jar.xml
<weblogic-ejb-jar>
<weblogic-enterprise-bean>
<ejb-name>TPCTestBean</ejb-name>
<stateless-session-descriptor/>
<jndi-name>finstral/ejb/test_tpc</jndi-name>
</weblogic-enterprise-bean>
</weblogic-ejb-jar>
<!-- Nothing I have to explain here -->
BeanCode (from the implementingBeanClass:
'de.sitewaerts.futuna.common.test.tpcbean.TPCBean')
public void setupTables() throws RemoteException
UserTransaction tx = getTransaction();
//getTransaction calls: 'tx = sCtx.getUserTransaction()' and does
some errorhandling
log.info("Die Transaktion vor den Connections: "+tx.toString());
//Sorry bout the German. You should get the Message though.
log.info("Der Transaktionsstatus vor den Connections:
"+transactionStatus(tx));
Connection conSecurity = getConnection(DATASOURCE_SECURITY, tx);
//gets a Connection via a DataSourceName from the JNDI tree
Connection conContent = getConnection(DATASOURCE_CONTENT, tx);
log.info("Die frische Connection conSecurity: "+conSecurity);
log.info("Die frische Connection conContent: "+conContent);
tearDownTable(conSecurity);
//Does nothing special
tearDownTable(conContent);
log.info("Die Transaktion nach dem Teardown: "+tx.toString());
log.info("Der Transaktionsstatus nach dem Teardown:
"+transactionStatus(tx));
Statement stmt = null;
try
stmt = conSecurity.createStatement();
//Well its getting interesting now.....
log.info("Die Transaktion vor dem createtable: "+tx.toString());
log.info("Der Transaktionsstatus vor dem createtable:
"+transactionStatus(tx));
log.info("Die Connection conSecurity vor dem createtable:
"+conSecurity);
log.info("Die Connection conContent vor dem createtable:
"+conContent);
stmt.executeUpdate(CREATE_TABLE);
//above is the row 91 -> throws: 'java.sql.SQLException: Does
not support SQL execution with no global transaction'
stmt.close();
stmt = conContent.createStatement();
stmt.executeUpdate(CREATE_TABLE);
stmt.close();
commitTransaction(tx);
catch (SQLException sqle)
log.error("Konnte kein table init machen", sqle);
rollbackTransaction(tx);
//The Code for this method is below
throw new EJBException(sqle);
finally
closeConnection(conSecurity);
closeConnection(conContent);
protected void rollbackTransaction(UserTransaction tx)
log.info("Der Transaktionsstatus vor dem Rollback:
"+transactionStatus(tx));
log.info("Die Transaktion vor dem Rollback: "+tx.toString());
try
tx.rollback();
//above is row 200 -> throws: 'java.lang.IllegalStateException:
Transaction does not exist'
log.info("Der Transaktionsstatus nach dem Rollback:
"+transactionStatus(tx));
log.info("Die Transaktion nach dem Rollback: "+tx.toString());
catch (Exception e)
log.error("Konnte die Transaktion nicht backrollen.", e);
throw new EJBException(e);
Log Excerpt
===========
INFO setupTables() (66) - Die Transaktion vor den Connections:
[email protected]
INFO setupTables() (67) - Der Transaktionsstatus vor den Connections:
STATUS_NO_TRANSACTION
INFO setupTables() (72) - Die frische Connection conSecurity:
weblogic.jdbc.rmi.SerialConnection@7c6daa
INFO setupTables() (73) - Die frische Connection conContent:
weblogic.jdbc.rmi.SerialConnection@3b425
INFO setupTables() (78) - Die Transaktion nach dem Teardown:
[email protected]
INFO setupTables() (79) - Der Transaktionsstatus nach dem Teardown:
STATUS_NO_TRANSACTION
INFO setupTables() (86) - Die Transaktion vor dem createtable:
[email protected]
INFO setupTables() (87) - Der Transaktionsstatus vor dem createtable:
STATUS_NO_TRANSACTION
INFO setupTables() (88) - Die Connection conSecurity vor dem
createtable: weblogic.jdbc.rmi.SerialConnection@7c6daa
INFO setupTables() (89) - Die Connection conContent vor dem
createtable: weblogic.jdbc.rmi.SerialConnection@3b425
ERROR setupTables() (101) - Konnte kein table init machen
java.sql.SQLException: Does not support SQL execution with no global
transaction
at
weblogic.jdbc.oci.xa.XAConnection.beforeExecute(XAConnection.java:137)
at
weblogic.jdbc.oci.xa.Statement.executeUpdate(Statement.java:112)
at weblogic.jdbc.jta.Statement.executeUpdate(Statement.java:185)
at
weblogic.jdbc.rmi.internal.StatementImpl.executeUpdate(StatementImpl.jav
a:42)
at
weblogic.jdbc.rmi.SerialStatement.executeUpdate(SerialStatement.java:54)
at
de.sitewaerts.futuna.common.test.tpcbean.TPCBean.setupTables(TPCBean.jav
a:91)
at
de.sitewaerts.futuna.common.test.tpcbean.TPCBeanImpl.setupTables(TPCBean
Impl.java:130)
at
de.sitewaerts.futuna.common.test.tpcbean.TPCBeanEOImpl.setupTables(TPCBe
anEOImpl.java:64)
at
de.sitewaerts.futuna.common.test.TwoPhaseCommitUnitTest.setUp(TwoPhaseCo
mmitUnitTest.java:51)
at
org.apache.commons.cactus.AbstractTestCase.runBareServerTest(AbstractTes
tCase.java:297)
at
org.apache.commons.cactus.server.ServletTestCaller.callTestMethod(Servle
tTestCaller.java:148)
at
org.apache.commons.cactus.server.ServletTestCaller.doTest(ServletTestCal
ler.java:199)
at
org.apache.commons.cactus.server.ServletTestRedirector.doPost(ServletTes
tRedirector.java:149)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.
java:213)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServl
etContext.java:1265)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.
java:1631)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
INFO rollbackTransaction() (196) - Der Transaktionsstatus vor dem
Rollback: STATUS_NO_TRANSACTION
INFO rollbackTransaction() (197) - Die Transaktion vor dem Rollback:
[email protected]
ERROR rollbackTransaction() (206) - Konnte die Transaktion nicht
backrollen.
java.lang.IllegalStateException: Transaction does not exist
at
weblogic.transaction.internal.TransactionManagerImpl.rollback(Transactio
nManagerImpl.java:228)
at
weblogic.transaction.internal.TransactionManagerImpl.rollback(Transactio
nManagerImpl.java:222)
at
de.sitewaerts.futuna.common.test.tpcbean.TPCBean.rollbackTransaction(TPC
Bean.java:200)
at
de.sitewaerts.futuna.common.test.tpcbean.TPCBean.setupTables(TPCBean.jav
a:102)
at
de.sitewaerts.futuna.common.test.tpcbean.TPCBeanImpl.setupTables(TPCBean
Impl.java:130)
at
de.sitewaerts.futuna.common.test.tpcbean.TPCBeanEOImpl.setupTables(TPCBe
anEOImpl.java:64)
at
de.sitewaerts.futuna.common.test.TwoPhaseCommitUnitTest.setUp(TwoPhaseCo
mmitUnitTest.java:51)
at
org.apache.commons.cactus.AbstractTestCase.runBareServerTest(AbstractTes
tCase.java:297)
at
org.apache.commons.cactus.server.ServletTestCaller.callTestMethod(Servle
tTestCaller.java:148)
at
org.apache.commons.cactus.server.ServletTestCaller.doTest(ServletTestCal
ler.java:199)
at
org.apache.commons.cactus.server.ServletTestRedirector.doPost(ServletTes
tRedirector.java:149)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.
java:213)
at
weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServl
etContext.java:1265)
at
weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.
java:1631)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
CONCLUSION
==========
I'm going nuts.
I just don't get it.
The transaction is the same. I don't change the Connection. I start
the Transaction at the beginning before I do anything!
Please guys help me out.
Thx alot.
Stefan "it's three o'clock in the morning, my girlfriend left me, and
my only friend is that stupid linux pinguine" Siprell
Software-Development
<<<<<<<<<<<<<<<<<<<<<<<<<<<
<sitewaerts> GmbH
Hebelstraße 15
D-76131 Karlsruhe
Tel: +49 (721) 920 918 22
Fax: +49 (721) 920 918 29
http://www.sitewaerts.de
>>>>>>>>>>>>>>>>>>>>>>>>>>>
Hi Priscilla
(did you ever see the movie ? :-))
Well I moved away from the idea of using bean managed transaction. I'll
be using Container Managed Transactions. To modify the
transactionalbehaviour I'll write proxymethods which have certain
different containermanaged transaction properties, but which all call
the same private methods.
But it works! Here is my experience:
- I was doing a DDL statement: I was trying to create new Tables, which
is a definite "no-go"
- pay careful attention to:
http://edocs.bea.com/wls/docs60/jta/trxejb.html#1051405
and
http://edocs.bea.com/wls/docs60/jta/trxejb.html#1051741
and use these Settings for the Pool, don't ask me why, but it took me
hours to find it out by myself:
<JDBCConnectionPool CapacityIncrement="5"
DriverName="weblogic.jdbc.oci.xa.XADataSource" InitialCapacity="1"
LoginDelaySeconds="1" MaxCapacity="2" Name="oracleSecurityPool"
Properties="user=xxx; password=xxx; server=xxx.xxx.xxx"
RefreshMinutes="5" Targets="fbsserver" TestConnectionsOnRelease="true"
TestTableName="Users" SupportsLocalTransaction="true"/>
where as the server (shown as: xxx.xxx.xxx) is the TNS Name of the
Oracle Driver.
It works great.
Another thing you guys might want to do is write a simple StatelessSB
which does JDBC calls and two different database Connections.
Then write a UnitTest which calls this bean a couple hundred times (with
the same transaction). Have one test do clean writes, and another which
causes some SQL-Exception (too long Data Columns, or likewise).
Always count the entries and see if everything worked out. We're using
this SetupConstruction to test new combinations of AS(sorry Priscilla) /
Database / Db-Drivers to have a "standard test".
I know my two cents were uncalled for, but it might save you some
time.....
thanx for your help
Stefan
-----Ursprüngliche Nachricht-----
Von: Priscilla Fung [mailto:[email protected]]
Bereitgestellt: Donnerstag, 2. August 2001 21:42
Bereitgestellt in: transaction
Unterhaltung: Two phase commit and bean managed transactions
Betreff: Re: Two phase commit and bean managed transactions
Hi Stefan,
Looks like you have not actually begun a transaction by calling
UserTransaction.begin(),
so your setupTables method is really executing with no transaction
context.
Priscilla
Stefan Siprell <[email protected]> wrote:
>To all the Transaction GURUS!
>
>Hi guys (-and gals).
>I've been doing J2EE for quite a while, but today was my first at
>XA-Transactions and Bean Managed Transactions.
>
>Why am I doing this?
>====================
>Well I have to be able to controll the transactionalbehaviour of my
>bean
>during runtime, since some bean calls would cause a transactional
>overflow due to the stress they would cause to the system, whereas
>smaller bean calls need to run in one transaction.
>-> Therefore I need Bean Managed Transactions
>Since the bean does a call on two Database Connections it has to use
>a
>XA-Transaction.
>-> Therefore I need XA-Transactions.
>
>Abstract
>========
>- I just can't get a User TransAction into the right Status it stays
>in 'STATUS_NO_TRANSACTION' all the time
>- Therefore the SQL Commands can be comitted 'java.sql.SQLException:
>Does not support SQL execution with no global transaction'
>- Therefore I can't do a rollback 'java.lang.IllegalStateException:
>Transaction does not exist'
>- Therefore I wrote this mail.
>
>I don't want to be a smart-"ass" writing such a detailed and indepth
>mail. I just would like to show that I tried, and would like to have
>some replies from you guys.
>
>Below are my configurations, code and logfiles.
>
>Thanx for taking your time and hope that the other people may learn
>something as well.
>
>cu
>
>Stefan
>
>
>Scenario
>========
>
>used Software
>-------------
>Bea Weblogic (WL) 6.0 SPx (not real sure which SP i have)
>Oracle 8.1.6 using the API-Version 8
>
>
>I configured the system as follows:
>(ofcourse I 'xxx'ed out all of the confidential data, sorry guys;-))
>excerpt from:
>
>config.xml
>----------
><JDBCConnectionPool CapacityIncrement="5"
>DriverName="oracle.jdbc.driver.OracleDriver" InitialCapacity="2"
>LoginDelaySeconds="1" MaxCapacity="5" Name="oraclePool"
>Properties="user=xxx;password=xxx;dll=ocijdbc8;protocol=thin"
>RefreshMinutes="5" Targets="fbsserver" TestConnectionsOnRelease="true"
>TestTableName="languages" URL="jdbc:oracle:thin:@xxx:1521:xxx "/>
>
><!-- Since this is our Main Datasource I would not like to use a XA
>Transaction due to performance Issues
>and the TxDataSource:
>-->
>
><JDBCTxDataSource EnableTwoPhaseCommit="true"
>JNDIName="finstral.datasource.fbs" Name="finstral Content Datasource"
>PoolName="oraclePool" Targets="fbsserver"/>
>
><!-- no comment required -I hope.
>Next comes the "special" Pool
>-->
>
><JDBCConnectionPool CapacityIncrement="5"
>DriverName="weblogic.jdbc.oci.xa.XADataSource" InitialCapacity="1"
>LoginDelaySeconds="1" MaxCapacity="2" Name="oracleSecurityPool"
>Properties="user=xxx;password=xxx;server=xxx.xxx.xxx"
>RefreshMinutes="5" Targets="fbsserver" TestConnectionsOnRelease="true"
>TestTableName="Users" SupportsLocalTransaction="true"/>
>
><!-- Well since there can only be one none XARessourceManager involved
>in a 2PC
>(keyword: Two Phase Commit) I will have to use a XACapable Driver for
>the other
>Datasource. Due to all the bugs in the oracle.xxx driver. I'll be
>using the jdriver for oci.
>I activated 'SupportsLocalTransaction' hoping it would solve my
>problem - without effect. I just left in there now, since it made
>sense me. Not?
>Again the TxDataSource:
>-->
>
><JDBCTxDataSource EnableTwoPhaseCommit="true"
>JNDIName="finstral.datasource.fbssecurity" Name="finstral Security
>Datasource" PoolName="oracleSecurityPool" Targets="fbsserver"/>
>
><!-- The System starts right up and can locate the test tables and
>everything. So I think all of this stuff is working here -->
>
>
>
>ejb-jar.xml
>-----------
><ejb-jar>
> <enterprise-beans>
> <session>
> <ejb-name>TPCTestBean</ejb-name>
>
><home>de.sitewaerts.futuna.common.test.tpcbean.TPCHome</home>
>
><remote>de.sitewaerts.futuna.common.test.tpcbean.TPC</remote>
>
><ejb-class>de.sitewaerts.futuna.common.test.tpcbean.TPCBean</ejb-class>
> <session-type>Stateless</session-type>
> <transaction-type>Bean</transaction-type>
> </session>
> </enterprise-beans>
> <assembly-descriptor/>
></ejb-jar>
>
><!-- Originally I had the assembly-descriptor full of transaction
>requirements. I thought since
>the bean is handling all of the transaction stuff itself, it might get
>confused by the 'container-transaction'
>properties, and deleted them. Do I need them anyway?-->
>
>weblogic-ejb-jar.xml
>--------------------
><weblogic-ejb-jar>
> <weblogic-enterprise-bean>
> <ejb-name>TPCTestBean</ejb-name>
> <stateless-session-descriptor/>
> <jndi-name>finstral/ejb/test_tpc</jndi-name>
> </weblogic-enterprise-bean>
></weblogic-ejb-jar>
>
><!-- Nothing I have to explain here -->
>
>BeanCode (from the implementingBeanClass:
>'de.sitewaerts.futuna.common.test.tpcbean.TPCBean')
>-----------------------------------------------------------------------
>---------------------
>
> public void setupTables() throws RemoteException
> {
> UserTransaction tx = getTransaction();
> //getTransaction calls: 'tx = sCtx.getUserTransaction()' and does
>some errorhandling
>
> log.info("Die Transaktion vor den Connections: "+tx.toString());
> //Sorry bout the German. You should get the Message though.
> log.info("Der Transaktionsstatus vor den Connections:
>"+transactionStatus(tx));
>
> Connection conSecurity = getConnection(DATASOURCE_SECURITY, tx);
> //gets a Connection via a DataSourceName from the JNDI tree
> Connection conContent = getConnection(DATASOURCE_CONTENT, tx);
>
> log.info("Die frische Connection conSecurity: "+conSecurity);
> log.info("Die frische Connection conContent: "+conContent);
>
> tearDownTable(conSecurity);
> //Does nothing special
> tearDownTable(conContent);
>
> log.info("Die Transaktion nach dem Teardown: "+tx.toString());
> log.info("Der Transaktionsstatus nach dem Teardown:
>"+transactionStatus(tx));
>
> Statement stmt = null;
> try
> {
> stmt = conSecurity.createStatement();
> //Well its getting interesting now.....
>
> log.info("Die Transaktion vor dem createtable: "+tx.toString());
> log.info("Der Transaktionsstatus vor dem createtable:
>"+transactionStatus(tx));
> log.info("Die Connection conSecurity vor dem createtable:
>"+conSecurity);
> log.info("Die Connection conContent vor dem createtable:
>"+conContent);
>
> stmt.executeUpdate(CREATE_TABLE);
> //above is the row 91 -> throws: 'java.sql.SQLException: Does
>not support SQL execution with no global transaction'
>
> stmt.close();
>
> stmt = conContent.createStatement();
> stmt.executeUpdate(CREATE_TABLE);
> stmt.close();
> commitTransaction(tx);
> }
> catch (SQLException sqle)
> {
> log.error("Konnte kein table init machen", sqle);
> rollbackTransaction(tx);
> //The Code for this method is below
> throw new EJBException(sqle);
> }
> finally
> {
> closeConnection(conSecurity);
> closeConnection(conContent);
> }
> }
>
> protected void rollbackTransaction(UserTransaction tx)
> {
> log.info("Der Transaktionsstatus vor dem Rollback:
>"+transactionStatus(tx));
> log.info("Die Transaktion vor dem Rollback: "+tx.toString());
> try
> {
> tx.rollback();
> //above is row 200 -> throws: 'java.lang.IllegalStateException:
>Transaction does not exist'
> log.info("Der Transaktionsstatus nach dem Rollback:
>"+transactionStatus(tx));
> log.info("Die Transaktion nach dem Rollback: "+tx.toString());
> }
> catch (Exception e)
> {
> log.error("Konnte die Transaktion nicht backrollen.", e);
> throw new EJBException(e);
> }
> }
>
>Log Excerpt
>===========
>INFO setupTables() (66) - Die Transaktion vor den Connections:
>[email protected]
>INFO setupTables() (67) - Der Transaktionsstatus vor den Connections:
>STATUS_NO_TRANSACTION
>INFO setupTables() (72) - Die frische Connection conSecurity:
>weblogic.jdbc.rmi.SerialConnection@7c6daa
>INFO setupTables() (73) - Die frische Connection conContent:
>weblogic.jdbc.rmi.SerialConnection@3b425
>INFO setupTables() (78) - Die Transaktion nach dem Teardown:
>[email protected]
>INFO setupTables() (79) - Der Transaktionsstatus nach dem Teardown:
>STATUS_NO_TRANSACTION
>INFO setupTables() (86) - Die Transaktion vor dem createtable:
>[email protected]
>INFO setupTables() (87) - Der Transaktionsstatus vor dem createtable:
>STATUS_NO_TRANSACTION
>INFO setupTables() (88) - Die Connection conSecurity vor dem
>createtable: weblogic.jdbc.rmi.SerialConnection@7c6daa
>INFO setupTables() (89) - Die Connection conContent vor dem
>createtable: weblogic.jdbc.rmi.SerialConnection@3b425
>ERROR setupTables() (101) - Konnte kein table init machen
>java.sql.SQLException: Does not support SQL execution with no global
>transaction
> at
>weblogic.jdbc.oci.xa.XAConnection.beforeExecute(XAConnection.java:137)
> at
>weblogic.jdbc.oci.xa.Statement.executeUpdate(Statement.java:112)
> at weblogic.jdbc.jta.Statement.executeUpdate(Statement.java:185)
> at
>weblogic.jdbc.rmi.internal.StatementImpl.executeUpdate(StatementImpl.ja
v
>a:42)
> at
>weblogic.jdbc.rmi.SerialStatement.executeUpdate(SerialStatement.java:54
> at
>de.sitewaerts.futuna.common.test.tpcbean.TPCBean.setupTables(TPCBean.ja
v
>a:91)
> at
>de.sitewaerts.futuna.common.test.tpcbean.TPCBeanImpl.setupTables(TPCBea
n
>Impl.java:130)
> at
>de.sitewaerts.futuna.common.test.tpcbean.TPCBeanEOImpl.setupTables(TPCB
e
>anEOImpl.java:64)
> at
>de.sitewaerts.futuna.common.test.TwoPhaseCommitUnitTest.setUp(TwoPhaseC
o
>mmitUnitTest.java:51)
> at
>org.apache.commons.cactus.AbstractTestCase.runBareServerTest(AbstractTe
s
>tCase.java:297)
> at
>org.apache.commons.cactus.server.ServletTestCaller.callTestMethod(Servl
e
>tTestCaller.java:148)
> at
>org.apache.commons.cactus.server.ServletTestCaller.doTest(ServletTestCa
l
>ler.java:199)
> at
>org.apache.commons.cactus.server.ServletTestRedirector.doPost(ServletTe
s
>tRedirector.java:149)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl
>java:213)
> at
>weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServ
l
>etContext.java:1265)
> at
>weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl
>java:1631)
> at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
>INFO rollbackTransaction() (196) - Der Transaktionsstatus vor dem
>Rollback: STATUS_NO_TRANSACTION
>INFO rollbackTransaction() (197) - Die Transaktion vor dem Rollback:
>[email protected]
>ERROR rollbackTransaction() (206) - Konnte die Transaktion nicht
>backrollen.
>java.lang.IllegalStateException: Transaction does not exist
> at
>weblogic.transaction.internal.TransactionManagerImpl.rollback(Transacti
o
>nManagerImpl.java:228)
> at
>weblogic.transaction.internal.TransactionManagerImpl.rollback(Transacti
o
>nManagerImpl.java:222)
> at
>de.sitewaerts.futuna.common.test.tpcbean.TPCBean.rollbackTransaction(TP
C
>Bean.java:200)
> at
>de.sitewaerts.futuna.common.test.tpcbean.TPCBean.setupTables(TPCBean.ja
v
>a:102)
> at
>de.sitewaerts.futuna.common.test.tpcbean.TPCBeanImpl.setupTables(TPCBea
n
>Impl.java:130)
> at
>de.sitewaerts.futuna.common.test.tpcbean.TPCBeanEOImpl.setupTables(TPCB
e
>anEOImpl.java:64)
> at
>de.sitewaerts.futuna.common.test.TwoPhaseCommitUnitTest.setUp(TwoPhaseC
o
>mmitUnitTest.java:51)
> at
>org.apache.commons.cactus.AbstractTestCase.runBareServerTest(AbstractTe
s
>tCase.java:297)
> at
>org.apache.commons.cactus.server.ServletTestCaller.callTestMethod(Servl
e
>tTestCaller.java:148)
> at
>org.apache.commons.cactus.server.ServletTestCaller.doTest(ServletTestCa
l
>ler.java:199)
> at
>org.apache.commons.cactus.server.ServletTestRedirector.doPost(ServletTe
s
>tRedirector.java:149)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
> at
>weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl
>java:213)
> at
>weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServ
l
>etContext.java:1265)
> at
>weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl
>java:1631)
> at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
>
>
>CONCLUSION
>==========
>I'm going nuts.
>I just don't get it.
>The transaction is the same. I don't change the Connection. I start
>the Transaction at the beginning before I do anything!
>Please guys help me out.
>Thx alot.
>
>Stefan "it's three o'clock in the morning, my girlfriend left me, and
>my only friend is that stupid linux pinguine" Siprell
>Software-Development
><<<<<<<<<<<<<<<<<<<<<<<<<<<
><sitewaerts> GmbH
>Hebelstraße 15
>D-76131 Karlsruhe
>
>Tel: +49 (721) 920 918 22
>Fax: +49 (721) 920 918 29
>http://www.sitewaerts.de
>>>>>>>>>>>>>>>>>>>>>>>>>>>>
>
>
>
-
Problem importing classes and beans
Hey there. Im having one major fustrating problem! When I code supporting classes and beans for my JSPs I get a code 500 internal server error when trying to import (via <%@ page import="class" %> and <jsp:useBean/>) Im storing my classes and beans in the WEB-INF folder and the calling JSPs are located in /ROOT/tests/8/jsp.jsp. Im using the following to import a class or bean:
<%@ import="aClass" %>
Seen as tho its in the WEB-INF folder I won't have to explicitly refer to where the class is located, just the class name.
I never had this problem when I was using my hosting service. Its only on my localhost server in which I get the Internal Server error.
Help appreciated, thx.
PS: Im quite new to JSP/Java Servlet.import (via <%@ page import="class" %> and
<jsp:useBean/>) Im storing my classes and beans in the
WEB-INF folder try put your class file in WEB-INF/classes.
or first put bean in the package, like WEB-INF/classes/packagename/beanclass
in jsp page:
<jsp:useBean id="Mybean" class="packagename.beanclass" scope="request" />
Question: is /ROOT a context entry in your server.xml?
Which JSP Container (version) you use? Maybe your localhost server's set up is different with your hosting. -
Difference b/w Java Class and Bean class
hi,
can anybody please tell me the clear difference between ordinary java class and java Bean class. i know that bean is also a java class but i donno the exact difference between the both.
can anybody please do help me in understanding the concept behind the bean class.
Thank u in advance.
Regards,
FazlinaWhile researching this question, I came across this answer by Kim Fowler. I think it explains it better than any other answer I have seen in the forum.
Many thanks Kim
Hi
Luckily in the java world the definition of components is a little
less severe than when using COM (I also have, and still occasionaly
do, worked in the COM world)
Firstly there are two definitions that need to be clarified and
separated: JavaBean and EnterpriseJavaBean (EJB)
EJB are the high end, enterprise level, support for distributed
component architectures. They are roughly equivalent to the use of MTS
components in the COM/ COM+ world. They can only run within an EJB
server and provide support, via the server, for functionality such as
object pooling, scalability, security, transactions etc. In order to
hook into this ability EJB have sets of interfaces that they are
required to support
JavaBeans are standard Java Classes that follow a set of rules:
a) Hava a public, no argument constructor
b) follow a naming patterns such that all accessor and modifier
functions begin with set/ get or is, e.g.
public void setAge( int x)
public int getAge()
The system can then use a mechanism known as 'reflection/
introspection' to determine the properties of a JavaBean, literally
interacting with the class file to find its method and constructor
signatures, in the example above the JavaBean would end with a single
property named 'age' and of type 'int' The system simply drops the
'set' 'get' or 'is' prefix, switches the first letter to lower case
and deduces the property type via the method definition.
Event support is handled in a similar manner, the system looks for
methods similar to
addFredListener(...)
addXXXListener
means the JavaBean supports Fred and XXX events, this information is
particularly useful for Visual builder tools
In addition there is the abiliity to define a "BeanInfo' class that
explicitly defines the above information giving the capability to hide
methods, change names etc. this can also be used in the case where you
cannot, for one reason or another, use the naming patterns.
Finally the JavaBean can optionally - though usually does - support
the Serializable interface to allow persistence of state.
As well as standard application programming, JavaBeans are regularly
used in the interaction between Servlets and JSP giving the java
developer the ability to ceate ojbect using standard java whilst the
JSP developer can potentially use JSP markup tags to interact in a
more property based mechanism. EJB are heaviliy used in Enterprise
application to allow the robust distribution of process
HTH.
Kim -
JSP Compile Error when using dynamic ID in logic:iterate and bean:size
Hello,
I try to create a dynamic table with logic:iterate and bean:size tag. Dynamic means the attributes are written by scriptlet. Eg.:
<logic:iterate id="customerBean" name="<%= formName %>" property="<%= propertyName%>" length="<%= sRowSize%>">When I replace the id Attribute with propertyName I get compile errors, such as
the compiler doesn't know the value at runtime:
Unable to compile class for JSP An error occurred at line: 179 in the jsp file: /pages/formContent.jsp Generated servlet error: _newCustomer.java:1046: Missing term. java.lang.Object <%= propertyName %> = null; ^
Whats wrong ?
Thanks for your helpSolution: don't use a runtime expression for the id attribute.
The id attribute is used to declare
- an attribute in scope
- a scriptlet variable on the page
These are only available for the duration of the <logic:iterate> tag
The "id" is only used in your programming. You don't need to make it dynamic. -
Passing vectors into JSP from Servlet and passing data back to Servlet
I have been building an MVC application.
It has a controller which instantiates classes and evokes methods to
populate vectors. These vectors are then passed into a JSP. This part of the application works fine.
What I am having trouble with is a new JSP I have designed; this will
display the data that is actioned by the FORM action. This is actioned
based on the Search criteria entered by the user. Based on this a further vector is populated and brought back to the JSP as a vector
and this is rendered via the TABLE tag. Again this works fine.
Against each of the rows displayed, I have a print checkbox which can be checked by the user. On checking the records they want to print, they should then hint a Print button which should go back to the Servlet and print the data. THIS IS WHERE I HAVE THE PROBLEM. On going
back to the servlet the checkbox values are not displayed, rather
the values that initially populate the JSP. How do I get these new values back into the vector and hence accessible from the Servlet.
Any help with be very much appreciated.
ChrisThanks for this.
Just to clarify I am not using Struts.
What I am having difficulties with is the fact that:
I can't get the checked values back to the Servlet - they keep the values they have in the bean - so as part of instantiating the bean class I set the value of the item to 'off'. The user will then check
the checkbox which should presumbably set the value to 'on'. This isn't happening because the setter method of the bean is not evoked again
because I don't come into this JSP again - the Servlet has finished here
and now needs to print the records. It can't do this because as
far as it is concerned nothing has changed since it last passed through
the vector to the JSP.
Even when I do the following:
Enumeration paramNames = request.getParameterNames();
String param = null;
while (paramNames.hasMoreElements())
param=(String)paramNames.nextElement();
System.out.println("parameter " + param + " is " +
request.getParameter(param));
what comes back is the valus of 'off' as opposed to 'on'.
The other thing is that 'request.getParameterNames()' only works
with the first record in the vector, i.e. it doesn't fetch any other
records that are rendered in the <TABLE> tag.
In desperation is there anybody out there who can help me.
Thanks
Chris
I am going to assume you are using a MVC framework
like Struts or very similar (I am assuming that from
the language you are using).
When the servlet passes the vector back to the JSP
page and you render the HTML that is passed back the
client your Vector is gone. The Vector is not
available at the HTML level that is being viewed at
the browser.
When the user selects the checkboxes and submits the
page (by clicking the print button) the controller
servlet (called ActionServlet in Struts, yours maybe
called something else) forwards the request to the
appropriate JavaBean and Servlet to process the
request. Either the JavaBean has to recreate the
Vector (not recommended) or the processing Servlet can
(better). You can do this by recreating the Vector
from scratch for the HttpRequest parameters or, at the
time of the initial request, saving Vector to a
session and then updating with the data you get back
from the client (again from the HttpRequest
parameters).
Either way you have to work with
HttpRequest.getParameter(). -
The good old packages and beans problem
I have a JSP which uses a JavaBean whos class file is in the same directory as the JSP. Assuming the bean is called HelloBean, what should I do?
lets say this is HelloBean.java
package xxx; //what should xxx be?
public class HelloBean implements java.io.Serializeable {
public String sayIt () {
return "hello";
}and for the jsp,
<jsp:useBean id="hello" scope="session" class= />
what should the class be to fit in with the above code?first, you should not put the bean in the same directory as the JSP.
I use two source trees.
/src/...
/web/...
The src contains java sources and is compiled to /WEB-INF/classes, the second contains anything associated with HTML and JSP (images, etc) and is COPIED to the root of the webapp directory structure. I do this using ANT. Furthermore I have a etc (for web.xml) and a lib (for jars). ANT makes sure every goes where it needs to go.
Usually I use the rule that JSPs associated with a servlet or bean are in the same path, so:
/src/com/sun/myapp/Thing.java
and
/web/com/sun/myapp/Thing1.jsp
This works fine for me.
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