struts 1.3.8 trying to get the rendered output of a struts page from a plain servlet
Hi,
I have a plain vanilla servlet and I want to "include" via the
RequestDispatcher mechanism the rendered output of a struts page. Here's
the code I have:
ServletContext ctx = servletConfig.getServletContext();
RequestDispatcher rd =
ctx.getRequestDispatcher("/modules/foo/Home.do?myparam=value");
if (rd != null) {
StringWriter stringWriter = new StringWriter();
MyResponse myresponse = new MyResponse(response, stringWriter);
rd.include(request, myresponse);
System.err.println(stringWriter.toString());
}
I created MyResponse as a wrapper on ServletResponse that contains a
buffer so I can pull out the contents. However, I'm not getting anything
Has anyone done this before? Or is there some easy way to do this?
Thanks, Jason
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Displaying an image in JSP in struts+tiles project
Hi,
Am building an application in struts2 and tiles. My requirement is to
retrieve an image blob from mysql database and display the image in a jsp
using img tag as below..
img src=""
Part of my struts.xml is as below:
My MyBytesResult class is:
public class MyBytesResult implements Result {
private static final long serialVersionUID = 1L;
public void execute(ActionInvocation invocation) throws Exception {
MyAction action = (MyAction) invocation.getAction();
HttpServletResponse response =
ServletActionContext.getResponse();
response.setContentType("image/jpeg");
//response.setContentLength(action.getMyContentLength());
response.getOutputStream().write(action.getMyImageInBytes());
response.getOutputStream().flush();
}
}
And MyAction class is:
public class MyAction extends ActionSupport {
private static final long serialVersionUID = 1L;
Blob image = null;
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
byte[] imgData = null;
OutputStream o = null;
HttpServletResponse response = ServletActionContext.getResponse();
public String doDefault() {
System.out.println("doDefault()");
try {
Class.forName("com.mysql.jdbc.Driver");
con =
DriverManager.getConnection("jdbc:mysql://localhost:3306/project","root","pass");
stmt = con.createStatement();
rs = stmt.executeQuery("select * from books_tb where
category='General' order by publish_date desc");
while (rs.next()) {
image = rs.getBlob(11);
imgData =
image.getBytes(1,(int)image.length());
}
}
catch (Exception e) {
System.out.println(e.getMessage());
}
return "myImageResult";
}
public byte[] getMyImageInBytes() {
System.out.println("getMyImageInBytes()");
try{
}
catch (Exception e) {
System.out.println(e.getMessage());
}
return imgData;
}
// public String getMyContentType() { }
// public String getMyContentDisposition() {}
// public int getMyContentLength() { }
// public int getMyBufferSize() { }
}
when i run the code the image is not displayed and I get an error saying
No result defined for action com.action.MyAction and result success
In struts.xml is I provide reslut name="success" and the jsp, it does not
throw an error but not displaying the image. However in any case it is not
going to MyAction.java. What could i do to rectify this?
Could provide you with required code if necessary..
Thanks,
Aruna
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Re: Accessing Static Constants from JSP in Struts 2.0.14
I figured it out.
In myClass, I have an enum listing the different state values. My
AVAILABLE_STATES variable was placed inside the curly braces for the enum.
This inadvertently placed the AVAILABLE_STATES variable inside the enum and
caused Struts 2 to throw an error message.
DavidZaz wrote:
>
> I'm trying to access a static constant from a JSP page in Struts 2.0.14,
> but it is not working.
>
> My JSP page:
>
>
>
> Java code:
>
> package org.my.company;
>
> import java.util.ArrayList;
> import java.util.List;
>
> public Class myClass {
>
> public static final List AVAILABLE_STATES = getStates();
>
> public static final List getStates() {
> List states = new ArrayList();
> states.add("New York");
> return states;
> }
>
> When I try to access my jsp page, I receive the following error message:
>
> Caused by: tag 'select', field 'list': The requested list key
> '@org.my.company.mycl...@available_states' could not be resolved as a
> collection/array/map/enumeration/iterator type. Example: people or
> people.{name} - [unknown location]
>
> Does anyone have any suggestion about what needs to be changed?
>
> Thanks!
>
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Accessing Static Constants from JSP in Struts 2.0.14
I'm trying to access a static constant from a JSP page in Struts 2.0.14, but
it is not working.
My JSP page:
Java code:
package org.my.company;
import java.util.ArrayList;
import java.util.List;
public Class myClass {
public static final List AVAILABLE_STATES = getStates();
public static final List getStates() {
List states = new ArrayList();
states.add("New York");
return states;
}
When I try to access my jsp page, I receive the following error message:
Caused by: tag 'select', field 'list': The requested list key
'@org.my.company.mycl...@available_states' could not be resolved as a
collection/array/map/enumeration/iterator type. Example: people or
people.{name} - [unknown location]
Does anyone have any suggestion about what needs to be changed?
Thanks!
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Re: OT- Versioning in Struts
1 = Struts 1 2 = Struts 2 On Mon, Jan 4, 2010 at 10:06 AM, Balwinder Kumar wrote: > Hi Paul, > > Thanks for insight. > > 2 = Major release version. This is the architecture number. > > Can you please tell me how exactly this architecture number is decided, I > mean what kind of changes in architecture will actually call for a change in > this number? > > Regards, > Balwinder Kumar > > Paul Benedict wrote: >> >> The science is in the version format: 2.X.Y.Z >> >> 2 = Major release version. This is the architecture number. >> X = Minor release version. >> Y = Patch release version. >> Z = Emergency patch release version. Not always needed. >> >> Paul >> >> On Sat, Jan 2, 2010 at 10:09 AM, Balwinder Kumar >> wrote: >> >>> >>> Hi, >>> >>> I just wanted to know how the version of release in Struts is decided? Is >>> there a scientific way that you guys follow to determine the version? If >>> yes, what is the process? >>> >>> Regards, >>> Balwinder Kumar >>> >>> - >>> To unsubscribe, e-mail: dev-unsubscr...@struts.apache.org >>> For additional commands, e-mail: dev-h...@struts.apache.org >>> >>> >>> >> >> > > - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
RE: migration to tiles2 - put attribute into request scope?
I sent this tiles issue the wrong list. Sorry for crossposting to struts and tiles. BTW: Got it working with an additional import statement: Main.jsp main.jsp: navigation.jsp tiles2: main.jsp: navigation.jsp How can I place the content of activeTab (here "ba") into request scope to make it accessible by other frameworks? Currently the String "activeTab" is passed but I want to pass "ba". Thanks, Michael
Re: struts 2 validation error
Hi Rakesh, use preparable interface and in prepare method initialize anything that is necessary to show that page. Best greetings, Pawel Wielgus. 2010/1/4, Rakesh K nair : > > Hi > > In my struts2 jsp page there is a "selection list".I am populating the > "list" from action class before rendering the page.I have some validation in > the page.After submitting it calls the same page.If validation is successful > it enters the action class and initializes the "list" , but if it is failure > then it will go to "input" result from there to jsp page without entering > action class then raising an null pointer exception.I need that "list" even > if the validation fails. > > Please help me to get out of this problem > > expecting your kind interaction > > thanks in advance > > rakesh > -- > View this message in context: > http://old.nabble.com/struts-2-validation-error-tp27009670p27009670.html > Sent from the Struts - User mailing list archive at Nabble.com. > > > - > To unsubscribe, e-mail: user-unsubscr...@struts.apache.org > For additional commands, e-mail: user-h...@struts.apache.org > > - To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
