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I’m trying to use org.apache.commons.beanutils.BeanUtils.copyProperties() to populate a transfer/value object from a formBean. The problem is that one of the fields, a date, is not getting copied. There is no exception thrown, the result is simply null. The other fields, which are Strings and Longs, copy just fine.
By reading what documentation I can find, it seems that this conversion, from String to java.sql.Date, is supposed to work out of the box. I wasn’t sure, though, so I registered a converter at startup using a ServletContextListener. This had no effect I could see.
Any ideas?
//////////////////////////////////////////////////////////////////////
public class FindAction extends Action {public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {FindForm findForm = (FindForm) form;
Worktypet worktypet = new Worktypet();List list = null;
try {
BeanUtils.copyProperties(worktypet,findForm);
} catch (IllegalAccessException e1) {
e1.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}try {
Context ctx = new InitialContext();
WorktypeHome worktypeHome =
(WorktypeHome) ctx.lookup(“ejb/Worktype”);
Worktype worktype = worktypeHome.create();
list = worktype.find(worktypet);} catch (RemoteException e) {
e.printStackTrace();
} catch (NamingException e) {
e.printStackTrace();
} catch (CreateException e) {
e.printStackTrace();
}
request.setAttribute(“list”,list);
return mapping.findForward(“success”);}
}
//////////////////////////////////////////////////////
<html>
<head>
<title>JSP for findForm form</title>
</head>
<body>
<html:form action=”/find”>
worktypeid : <html:text value=”17″ property=”worktypeid” />
<html:errors property=”worktypeid” />
<br />
description : <html:text value=”description” property=”description” />
<html:errors property=”description” />
<br />
dictsystname : <html:text value=”dictsystname” property=”dictsystname” />
<html:errors property=”dictsystname” />
<br />
flags : <html:text value=”4″ property=”flags” />
<html:errors property=”flags” />
<br />
lastchange : <html:text value=”2005-04-14″ property=”lastchange” />
<html:errors property=”lastchange” />
<br />
status : <html:select value=”1″ property=”status” >
<html:option value=”1″/>1
<html:option value=”2″/>2
</html:select>
<html:errors property=”status” />
<br />
<html:submit />
<html:cancel />
</html:form>
</body>
</html>///////////////////////////////////////////////////////////
public class Worktypet
implements Serializable
{ …
private java.lang.String worktypeid;
private java.lang.Long status;
private java.lang.String dictsystname;
private java.lang.String description;
private java.sql.Date lastchange;
private java.lang.Long flags;//setter and getters….
}
//////////////////////////////////////////////////////////
public class FindForm extends ActionForm {private String worktypeid;
private String dictsystname;
private String description;
private String flags;
private String lastchange;
private String status;//setter and getters….
}I figured out the problem. The signature of the getter for the date in the value object was incorrect (util.Date instead of sql.Date) , so copyProperties() just ignored it. Of course you could not have seen that , since I didn’t include all the source… 🙁
But thanks, and I’ll add that to my list of links on this general topic. I agree with the author that the subject is poorly documented.
