Hi
I need a form representing a two-dimensional array of input fields.
Can anybody tell me what the appropriate solution in Struts 1.0 looks like?
Despite numerous attempts to solve this with Struts, I did not succeed. My
attempted solution (in fact, one of them) looks like that
('account', 'amount' and 'remark' are indexed properties of the Bean
represented by 'report'):
...
<table>
<tr>
<th>Account</th><th>Amount</th><th>Remark</th>
</tr>
<bean:define id="report" type="ReportForm" toScope="session" name="select"
property="report" scope="session"/>
<html:form name="report" type="ReportForm" scope="session" action="log.do">
<logic:iterate name="report" property="entries" id="entry" indexId
="entryId">
<tr>
<td><html:text name="report" property="account[entryId]"/></td>
<td><html:text name="report" property="amount[entryId]"/></td>
<td><html:text name="report" property="remark[entryId]"/></td>
</tr>
</logic:iterate>
<tr><td colspan=3><center>
<html:submit>
<bean:message key="button.submit"/>
</html:submit>
</td></tr>
</html:form>
</table>
This causes the exception:
java.lang.IllegalArgumentException: Invalid indexed property
'account[entryId]'
at
org.apache.struts.util.PropertyUtils.getIndexedProperty(PropertyUtils.java:308)
at
org.apache.struts.util.PropertyUtils.getNestedProperty(PropertyUtils.java,
Compiled Code)
at
org.apache.struts.util.PropertyUtils.getProperty(PropertyUtils.java:453)
at
org.apache.struts.util.RequestUtils.lookup(RequestUtils.java:503)
at
org.apache.struts.taglib.html.BaseFieldTag.doStartTag(BaseFieldTag.java:188)
at _0002freport_0002ejspreport_jsp_38._jspService
(_0002freport_0002ejspreport_jsp_38.java, Compiled Code)
at
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.jasper.servlet.JspServlet$JspServletWrapper.service(JspServlet.java:177)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:318)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java,
Compiled Code)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.facade.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:194)
at
org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.java:1758)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1595)
at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:509)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
org.apache.tomcat.core.ServletWrapper.doService(ServletWrapper.java:404)
at org.apache.tomcat.core.Handler.service(Handler.java:286)
at
org.apache.tomcat.core.ServletWrapper.service(ServletWrapper.java:372)
at
org.apache.tomcat.core.ContextManager.internalService(ContextManager.java:797)
at
org.apache.tomcat.core.ContextManager.service(ContextManager.java:743)
at
org.apache.tomcat.service.connector.Ajp12ConnectionHandler.processConnection(Ajp12ConnectionHandler.java:166)
at
org.apache.tomcat.service.TcpWorkerThread.runIt(PoolTcpEndpoint.java,
Compiled Code)
at
org.apache.tomcat.util.ThreadPool$ControlRunnable.run(ThreadPool.java,
Compiled Code)
at java.lang.Thread.run(Thread.java:479)
If I replace the index variable 'entryId' by a literal number (see below),
this works so far (though it is not 'meaningful', ); thus the environment
(beans etc.) seems to be OK.
...
<table>
<tr>
<th>Account</th><th>Amount</th><th>Remark</th>
</tr>
<bean:define id="report" type="ReportForm" toScope="session" name="select"
property="report" scope="session"/>
<html:form name="report" type="ReportForm" scope="session" action="log.do">
<logic:iterate name="report" property="entries" id="entry" indexId
="entryId">
<tr>
<td><html:text name="report" property="account[2]"/></td>
<td><html:text name="report" property="amount[2]"/></td>
<td><html:text name="report" property="remark[2]"/></td>
</tr>
</logic:iterate>
<tr><td colspan=3><center>
<html:submit>
<bean:message key="button.submit"/>
</html:submit>
</td></tr>
</html:form>
</table>
I suppose there must be a solution in Struts for this standard problem. How
does it look like?
Thanks if you can bring me on the right track.
Guido
