I have used ModelDriven
in my Action class, previously it was working fine, Now it has stopped working
when I used <s:debug>
tag of Struts in my jsp I found following result...
---------Updated Image-----------
I'm accessing values in my jsp page as :
<s:property value="categoryName"/>
<s:property value="categoryId"/> // I typed here
working fine, If I accessed them as :
<s:property value="category.categoryName"/>
<s:property value="category.categoryId"/>
My questions are :
- Why I'm getting properties 2 times ?
- How to avoid them getting multiple times ?
- I have saw many people suggesting to avoid ModelDriven, why ?
-------Update Question-------
Actually I'm getting properties 3 times, I forgot to highlight 3rd one , Plz look at my Action class
I have not defined separate properties of
Model class
In my action, highlighted by 1,
how to set these properties ?Is anything, I'm doing wrong when implementing
ModelDriven
?
Here is my model CategoryAction:
public class CategoryAction extends ActionSupport implements ModelDriven<Category>,
Preparable, SessionAware, ServletRequestAware, ServletContextAware {
private static final long serialVersionUID = 1L;
private Category category;
private Category [] categories;
private ServletContext servletContext;
private Map<String, Object> session;
private ServletRequest request;
@Override
public Category getModel() {
return this.category;
}
@Override
public void prepare() throws Exception {
this.category = new Category();
if( this.jmain == null )
this.jmain = new Jmain();
}
public void prepareCrudCategory() throws Exception {
this.categoryService = new CategoryService();
}
@Override
public String execute() throws Exception {
System.out.println("----------CategoryAction#execute()-----------");
if( this.category.getCategoryId() == 0)
this.category = this.jmain.getCategory( 1 ); //Get Main Category
else
this.category = this.jmain.getCategory( this.category.getCategoryId() );
System.out.println(this.category.toString());
return super.execute();
}
public Category getCategory() {
return category;
}
public void setCategory(Category category) {
this.category = category;
}
public Category[] getCategories() {
return categories;
}
public void setCategories(Category[] categories) {
this.categories = categories;
}
}
-------Update 2-------
this is my JSP code snippet
<form action="add-category" id="id-add-id-entry-form" name="addIdEntry" method="post">
<input type="hidden" id="opType" name="opType" value='<s:property value="opType"/>'>
<br /> <br />
<center>
<span id="id-message-span">
<s:if test="hasActionMessages()">
<h3 style="font-size: 22px; color: #FD0006; text-shadow: 2px 2px 3px rgba(255, 255, 255, 0.1); margin-left: 330px;">
<s:actionmessage />
</h3>
</s:if>
<s:if test="hasActionErrors()">
<h3 style="font-size: 16px; color: #FD0006; text-shadow: 2px 2px 3px rgba(255, 255, 255, 0.1); margin-left: 330px;">
<s:actionerror />
</h3>
</s:if>
</span>
<div id="id-id-entry-div" class="class-id-entry-div class-center">
<fieldset style="height: 100%; border-style: solid; border-width: 2px; border-color: #FEC458;"
>
<legend class="PageTitleUpperCase"> Add Category </legend>
<table cellspacing="5" cellpadding="2" border="0" width="65%" class="class-center">
<tr>
<td>
<span style="color: red">*</span>
<label class="Label_Green"> Patent Category Name :</label>
<s:if test=""></s:if>
</td>
<td>
<s:property value="opType"/><br>
<s:property value="categoryId"/>
<s:property value="categoryName"/>
<s:if test="%{opType == 0}">
<%-- <s:property value="categoryName"/> --%>
<input type="hidden" name="parentCategoryId" value='<s:property value="categoryId"/>' >
<label class="Label_Green">
<s:property value="categoryName"/>
</label>
</s:if>
<s:else>
<%-- <s:property value="parentCategoryName"/> --%>
<input type="hidden" name="parentCategoryId" value='<s:property value="parentCategoryId"/>' >
<label class="Label_Green">
<s:property value="parentCategoryName"/>
</label>
</s:else>
</td>
</tr>
<tr>
<td>
<span style="color: red">*</span>
<label class="Label_Green"> Category Name :</label>
<s:if test=""></s:if>
</td>
<td >
<input type="hidden" name="categoryId"
<s:if test="%{opType == 0}">value='0'</s:if>
<s:else>value='<s:property value="categoryId"/>'</s:else>
>
<input id="id-category-name-text" type="text" name="categoryName"
required="required" size="40" placeholder="Enter Category Name Here..."
<s:if test="%{opType == 1}">value='<s:property value="categoryName"/>'</s:if> >
</td>
</tr>
<tr>
<td></td>
<td align="left"><input type="submit" id="submit_img"
<s:if test="opType != 0"> value='Update'</s:if>
<s:else> value='Submit' </s:else> >
</td>
</tr>
</table>
</fieldset>
</div>
<s:debug/>
</center>
</form>
____Update Image for How I got Value Stack Contents Using Debug Tag_____
After using <s:debug/>
, I got [debug]
link on clicking it , following values are Shown :
<s:debug/>
for List Category Page, [debug]
link on clicking it , following values are Shown :