struts 2 field error values not displaying
i have override validate method and added errors using
addFieldError("test", "test print");
and in jsp used
<s:fielderror />
but the errors are not displayed in input.jsp.
Also my jsp content type is
<%@ page contentType="text/html; charset=UTF-8"%>
My struts.xml is like
<action name="test" class="ListInfo">
<result>/input.jsp</result>
</action>
<action name="Proceed" class="Details">
<interceptor-ref name="defaultStack"/>
<interceptor-ref name="execAndWait">
<param name="delay">100</param>
</interceptor-ref>
<result name="wait">Wait.jsp</result>
<result name="success">/Summary.jsp</result>
<result name="input" type="chain">test</result>
<result name="failure" type="chain">test</result>
</action>
Answer
Turns out that errors (field and action are NOT maintained across a chain.
Following proves this (assumes struts2-conventions-plugin-VERSION):
Action foo always chains to action bar (so we only need a view for action bar)
Action foo
package com.quaternion.action;
import com.opensymphony.xwork2.ActionSupport;
import org.apache.struts2.convention.annotation.Result;
/** #1 SOMETHING WILL BE ADDED HERE TO FIX THE ISSUE**/
@Result(name="input", type="chain", location="bar")
public class Foo extends ActionSupport{
private String name;
@Override
public void validate(){
super.addActionError("Just an action error");
super.addFieldError("name", "Name is all ways wrong... for no good reason.");
}
public String getName(){
return name;
}
public void setName(String name){
this.name = name;
}
}
Action bar
package com.quaternion.action;
import com.opensymphony.xwork2.ActionSupport;
/** #2 SOMETHING WILL BE ADDED HERE TO FIX THE ISSUE**/
public class Bar extends ActionSupport{
}
view for bar: /WEB-INF/content/bar.jsp
<%@taglib prefix="s" uri="/struts-tags"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<body>
<h1>Action Bar</h1>
<s:actionerror/>
<s:fielderror name="name"/>
</body>
</html>
Testing the above we see nothing show up in the errors.
To fix the issue we use the store interceptor: http://struts.apache.org/2.0.14/struts2-core/apidocs/org/apache/struts2/interceptor/MessageStoreInterceptor.html
In the first action (#1) we will need to add annotations and the imports to support them:
import org.apache.struts2.convention.annotation.InterceptorRef;
import org.apache.struts2.convention.annotation.InterceptorRefs;
@InterceptorRefs({
@InterceptorRef(value = "store", params = {"operationMode","STORE"}),
@InterceptorRef("defaultStack"),
})
In the second action (#2) we will need to add annotations and the imports to support them:
import org.apache.struts2.convention.annotation.InterceptorRef;
import org.apache.struts2.convention.annotation.InterceptorRefs;
@InterceptorRefs({
@InterceptorRef(value = "store", params = {"operationMode","RETRIEVE"}),
@InterceptorRef("defaultStack"),
})
And now it works.