Struts2 CRUD删除不起作用

Question

I am trying to delete a selected row in a project where I'm using Hibernate and Struts.

<a href="DeletePublication?Id=<s:property value="Id"/>"><img
                    src="${pageContext.request.contextPath}/img/delete.png" width=20px
                    height=20px></a>

This is the Link I want to Click! In the struts.xml the Action is defined as:

    <action name="DeletePublication" class="de.nak.library.action.PublicationAction"
        method="delete">
        <result type="redirect">ShowPublicationList.action</result>
        <result type="chain" name="input">ShowPublicationList</result>
    </action>

The Action class looks like:

    public String delete() {
    publication = publicationService.loadPublication(publicationId);
    if (publication != null) {
        publicationService.deletePublication(publication);
    }
    return SUCCESS;

If I click the link, nothing is happening! I tried to set a breakpoint in the delete method, and I saw that it is not even called. Please help!

Answer 1

Change this in the struts.xml :

<constant name="struts.devMode" value="true" />

This will turn on a developer mode where you can see more log messages on the console. You might not have getter and setter for properties. Missing " in the attributes.

<s:a namespace="onthepackage" action="DeletePublication"><s:param name="Id" value="%{Id}"/><img
     src="<s:url value='/img/delete.png'/>" width="20px"
     height="20px">
</s:a>

Answer 2

instead of using <a href=""> directly, use <s:url> to get to the DeletePublication action. Then use that <s:url> 's reference to <a href='<s:property value="#ref"/>' .