CODEWITHSUNDEEP
javastruts2
Shameer
Shameer

Reputation: 361

addFieldError on Struts2 not displaying error on the fields

Hi I m very new to struts2. from some books and websites I got this example. In action class it use validate method to check logic. The method is called bcoz from the print statements. But the error is not shown near to the fields. Jst help me

Index.jsp

 <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
 pageEncoding="ISO-8859-1"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Home</title>
</head>
<body>
<s:form action="LoginAction ">
<s:textfield name="username" label="Username" />
<s:textfield name="password" label="Password" />
<s:submit value="Login"></s:submit>
</s:form>
</body>
</html>

Struts.xml

<package name="default" extends="struts-default">
        <action name="LoginAction" class="org.shammu.struts2.actions.LoginAction">
                <result name="success">/welcome.jsp</result>
                <result name="input">/index.jsp</result>
        </action>
        <action name="emptypassthrough">
                <result>index.jsp</result>
        </action>


</package>

LoginAction.java

 package org.shammu.struts2.actions;

 import org.shammu.struts2.beans.LoginBean;

 import com.opensymphony.xwork2.ActionSupport;

 @SuppressWarnings("serial")
 public class LoginAction extends ActionSupport{

private String username;
private String password;
public String getUsername() {
    return username;
}
public void setUsername(String username) {
    this.username = username;
}
public String getPassword() {
    return password;
}
public void setPassword(String password) {
    this.password = password;
}
public String execute(){
    LoginBean login = new LoginBean();
    login.setPassword(password);
    login.setUsername(username);
    if (getUsername().equals("abcd")) {
        return "success";
    } else {
        return "input";
    }

}

@Override
public void validate() {
    if (username.length() < 3) {
        System.out.print("user err ok");
        this.addFieldError(username, "Username Empty Pls provide");

    }
    if (password.length() < 3) {
        System.out.print("Pass err ok");
        this.addFieldError(password, "Password Empoty provride one pkls");
    }

}
 }

I m not considering execute method. I want jst the error msg printed near to fields... Help

Upvotes: 1

Views: 19295

Answers (2)

Aleksandr M
Aleksandr M

Reputation: 24396

You are not correctly using addFieldError method. The first parameter in that method is a name of the field. In your case it should be "username".

addFieldError("username", "Username Empty Pls provide");

Upvotes: 4

Ankur Lathi
Ankur Lathi

Reputation: 7836

To display fielderror you need to add <s:fielderror /> in your jsp.

It Render field errors if they exists. Specific layout depends on the particular theme. The field error strings will be html escaped by default.

<%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Home</title>
</head>
<body>
<s:form action="LoginAction ">

<s:textfield name="username" label="Username" /><s:fielderror fieldName="username"/>
<s:textfield name="password" label="Password" /><s:fielderror fieldName="password"/>

<s:submit value="Login"></s:submit>
</s:form>
</body>
</html>

Upvotes: 4

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