struts2 show question

2009-04-20 Thread red phoenix 
I have a table named mytable,it has two cols,col1 and col2,the data are
col1   col2
---
John   24
Kate   18

hibernate xml file is follows:
hibernate-mapping auto-import=false
 class name=mytable table=mytable 
  id name=col1 column=col1 type=java.lang.String
   generator class=assigned/
  /id
  property name=col2 type=java.lang.String
   column name=col2 /
  /property
   /class
/hibernate-mapping

Then I user struts2 to get the data by following statement: List
testList=this.getHibernateTemplate().find( from mytable);
request.setAttribute(testList,testList);
return SUCCESS;

the action dispatch to following jsp page

table
c:forEach var=test items=${testList}
   trtd
c:out value=${test.col1}/c:out
 c:out value=${test.col2}/c:out
   /td/tr
/c:forEach
/table

Above codes run well,it can show correct result
 John   24
Kate   18

then I modify struts action,like following:
 List testList=this.getHibernateTemplate().find( select col1,col2 from
mytable);
request.setAttribute(testList,testList);
return SUCCESS;

the action dispatch to the same jsp,but this time,the jsp show nothing!
Why? I don't understand what's wrong with my code? Anyone could help me to
solve above problem?

Thank

Re: struts2 show question

2009-04-20 Thread Jim Kiley 
Have you tried writing a unit test to ensure that testList is populated
after your action executes?  I'm pretty sure you'll find that it isn't.
It looks to me like you're declaring testList to be a local variable within
your action method (you're doing List testList =  instead of testList =
).  So your local testList goes out of scope as soon as the action method
is done executing.  You need testList to be a field of your action, not a
local variable.

jk

On Mon, Apr 20, 2009 at 12:01 PM, red phoenix rodphoe...@gmail.com wrote:

 I have a table named mytable,it has two cols,col1 and col2,the data are
 col1   col2
 ---
 John   24
 Kate   18

 hibernate xml file is follows:
 hibernate-mapping auto-import=false
  class name=mytable table=mytable 
  id name=col1 column=col1 type=java.lang.String
   generator class=assigned/
  /id
  property name=col2 type=java.lang.String
   column name=col2 /
  /property
   /class
 /hibernate-mapping

 Then I user struts2 to get the data by following statement: List
 testList=this.getHibernateTemplate().find( from mytable);
 request.setAttribute(testList,testList);
 return SUCCESS;

 the action dispatch to following jsp page

 table
 c:forEach var=test items=${testList}
   trtd
c:out value=${test.col1}/c:out
 c:out value=${test.col2}/c:out
   /td/tr
 /c:forEach
 /table

 Above codes run well,it can show correct result
  John   24
 Kate   18

 then I modify struts action,like following:
  List testList=this.getHibernateTemplate().find( select col1,col2 from
 mytable);
 request.setAttribute(testList,testList);
 return SUCCESS;

 the action dispatch to the same jsp,but this time,the jsp show nothing!
 Why? I don't understand what's wrong with my code? Anyone could help me to
 solve above problem?

 Thank




-- 
Jim Kiley
Senior Technical Consultant | Summa
[p] 412.258.3346
http://www.summa-tech.com

Re: struts2 show question

2009-04-20 Thread Jim Kiley 
Oh heck I misread your code there.  This is Struts 1 and not Struts 2, isn't
it?  Sorry about that.
jk

On Mon, Apr 20, 2009 at 12:08 PM, Jim Kiley jhki...@summa-tech.com wrote:

 Have you tried writing a unit test to ensure that testList is populated
 after your action executes?  I'm pretty sure you'll find that it isn't.
 It looks to me like you're declaring testList to be a local variable within
 your action method (you're doing List testList =  instead of testList =
 ).  So your local testList goes out of scope as soon as the action method
 is done executing.  You need testList to be a field of your action, not a
 local variable.

 jk


 On Mon, Apr 20, 2009 at 12:01 PM, red phoenix rodphoe...@gmail.comwrote:

 I have a table named mytable,it has two cols,col1 and col2,the data are
 col1   col2
 ---
 John   24
 Kate   18

 hibernate xml file is follows:
 hibernate-mapping auto-import=false
  class name=mytable table=mytable 
  id name=col1 column=col1 type=java.lang.String
   generator class=assigned/
  /id
  property name=col2 type=java.lang.String
   column name=col2 /
  /property
   /class
 /hibernate-mapping

 Then I user struts2 to get the data by following statement: List
 testList=this.getHibernateTemplate().find( from mytable);
 request.setAttribute(testList,testList);
 return SUCCESS;

 the action dispatch to following jsp page

 table
 c:forEach var=test items=${testList}
   trtd
c:out value=${test.col1}/c:out
 c:out value=${test.col2}/c:out
   /td/tr
 /c:forEach
 /table

 Above codes run well,it can show correct result
  John   24
 Kate   18

 then I modify struts action,like following:
  List testList=this.getHibernateTemplate().find( select col1,col2 from
 mytable);
 request.setAttribute(testList,testList);
 return SUCCESS;

 the action dispatch to the same jsp,but this time,the jsp show nothing!
 Why? I don't understand what's wrong with my code? Anyone could help me to
 solve above problem?

 Thank




 --
 Jim Kiley
 Senior Technical Consultant | Summa
 [p] 412.258.3346
 http://www.summa-tech.com




-- 
Jim Kiley
Senior Technical Consultant | Summa
[p] 412.258.3346
http://www.summa-tech.com

Re: struts2 show question

2009-04-20 Thread Dave Newton 

red phoenix wrote:

table
c:forEach var=test items=${testList}
   trtd
c:out value=${test.col1}/c:out
 c:out value=${test.col2}/c:out
   /td/tr
/c:forEach
/table

then I modify struts action,like following:
 List testList=this.getHibernateTemplate().find( select col1,col2 from
mytable);
request.setAttribute(testList,testList);
return SUCCESS;

the action dispatch to the same jsp,but this time,the jsp show nothing!
Why? I don't understand what's wrong with my code? Anyone could help me to
solve above problem?


This seems like a Hibernate question, no?

Dave


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