Dmitry Dmitry - 4 months ago 51
Java Question

Processing Date in Struts 1 ActionForm

I have problem on processing input request parameter (of course it's type String) to

java.util.Date
. I thought that following code added to my bean might solve this problem, but I was wrong:

public Date getDate() {
return date;
}

public void setDate(Date date) {
this.date = date;
}

public void setDate(String dateString) {
try {
date = DateFormat.getDateInstance().parse(dateString);
} catch (ParseException e) {
date = new Date();
}
}


It throws an exception after submiting form:


javax.servlet.ServletException: BeanUtils.populate
org.apache.struts.util.RequestUtils.populate(RequestUtils.java:469)
org.apache.struts.action.RequestProcessor.processPopulate(RequestProcessor.java:818)

java.lang.IllegalArgumentException: Cannot invoke com.epam.testapp.model.News.setDate - argument type mismatch
org.apache.commons.beanutils.PropertyUtilsBean.invokeMethod(PropertyUtilsBean.java:1778)
org.apache.commons.beanutils.PropertyUtilsBean.setSimpleProperty(PropertyUtilsBean.java:1759)
org.apache.commons.beanutils.PropertyUtilsBean.setNestedProperty(PropertyUtilsBean.java:1648)
org.apache.commons.beanutils.PropertyUtilsBean.setProperty(PropertyUtilsBean.java:1677)



Is this fundamental of struts 1 form that this code won't work because of mismatch of returning getter and accepting setter parameter types? How can I solve this problem ? I don't want at all to make method named like
setStringDate(String stringDate(){...}
and think on every page which method should I call :(

Answer

Date object cannot be a property in struts as date format can vary (depending on specification). Some may have dd-MM-yyyy, dd-MMMM-yy, etc.

I would suggest having a property:

private String date;

public String getDate() { return date; }

public void setDate(String date) { this.date = date; }

And in your action, convert the date string into Date object.

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