没有属性的吸气剂方法……错误

Question

I am unable to find out what I am doing wrong.

I get this error:

javax.servlet.jsp.JspException: No getter method for property: "firstname" of bean: "org.apache.struts.validator.DynaValidatorForm"
    at org.apache.struts.taglib.TagUtils.lookup(TagUtils.java:915)
    at org.apache.struts.taglib.html.BaseFieldTag.prepareValue(BaseFieldTag.java:126)
    at org.apache.struts.taglib.html.BaseFieldTag.renderInputElement(BaseFieldTag.java:102)
    at org.apache.struts.taglib.html.BaseFieldTag.doStartTag(BaseFieldTag.java:80)
    at org.apache.jsp.login_jsp._jspx_meth_html_005ftext_005f1(login_jsp.java:1095)
    at org.apache.jsp.login_jsp._jspx_meth_html_005fform_005f1(login_jsp.java:1040)
    at org.apache.jsp.login_jsp._jspService(login_jsp.java:759)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

in the struts-config.xml file the tage is used:

<form-bean name="sendContactForm" type="org.apache.struts.validator.DynaValidatorForm">
            <form-property name="firstname" type="java.lang.String" initial="firstname"/>
            <form-property name="lastname" type="java.lang.String" initial="lastname"/>
            <form-property name="emailaddress" type="java.lang.String" initial="email"/>
            <form-property name="subject" type="java.lang.String" initial="subject"/>
            <form-property name="comments" type="java.lang.String" initial="comments"/>
        </form-bean>

and also:

<action path="/sendContactForm" attribute="sendContactForm" input="/login.jsp"
            name="sendContactForm" scope="request"  parameter="reqCode"
            type="org.springframework.web.struts.DelegatingActionProxy" validate="true">
            <forward name="sendcontacts" path="/login.jsp"/>
        </action>

in Actionform I have:

public class ContactAction extends DynaValidatorActionForm {

    private static Logger log = Logger.getLogger(ContactAction.class);


public ActionForward sendContactForm(ActionMapping mapping, ActionForm form,
            HttpServletRequest req, HttpServletResponse resp) throws Exception {
            log.debug("ContactForm--start");


DynaValidatorActionForm sendContactForm = (DynaValidatorActionForm) form;
ActionMessages messages = new ActionMessages();

String firstName = ((String) sendContactForm.get("firstname"));
String lastName = ((String) sendContactForm.get("lastname"));
String emailAddress = ((String) sendContactForm.get("emailaddress"));
String subject = ((String) sendContactForm.get("subject"));
String comments = ((String) sendContactForm.get("comments"));
return mapping.findForward("sendcontacts");

In the jsp file I have:

    <html:form action="/sendContactForm.do?ContactCd=sendContactForm" method="post" styleId="sendContactForm">
    <c:set var="sendContactForm" value="${sendContactForm}" />

    <html:errors/>           



        <label for="firstname">First Name  <span class="asterisk">*</span>
        </label>
            <html:text styleId="firstname" property="firstname" styleClass="form-control tip required"  name="sendContactForm" />



        <label for="lastname">Last Name  <span class="asterisk">*</span>
        </label>
        <html:text styleId="lastname" property="lastname" styleClass="form-control tip pplaceholder" name="sendContactForm"/>



        <label for="emailaddress">Email Address  <span class="asterisk">*</span>
        </label>
        <html:text styleId="emailaddress" property="emailaddress" styleClass="form-control tip pplaceholder"  name="sendContactForm" />


        <label for="subject">Subject  <span class="asterisk">*</span>
        </label>
        <html:text styleId="subject" property="subject" styleClass="form-control tip pplaceholder" name="sendContactForm"/>

             <label for="comments">Comments  <span class="asterisk">*</span>
        </label>
        <html:textarea styleId="comments" property="comments" styleClass="form-control tip pplaceholder" name="sendContactForm"></html:textarea>

</html:form>

I have researched a lot but wasn't success yet.

So, what's wrong? Thank you.

Answer 1

I am shooting in the dark here(don't have much idea of struts) but seems like you are calling getter function[((String) sendContactForm.get("firstname"));] from some bean and it is giving error no getter function. So have you created getter function for "firstname"?

Answer 2

Ok. Got your problem.

Try this.

Instead of using "String firstName = ((String) sendContactForm.get("firstname"));"

Use this

String firstName = req.getParameter("firstName"));

This will solve your issue. Try it.

Answer 3

Major UPDATE:

I tried out your code with the changes I mentioned here, and the login page with all those five fields are getting displayed with their default initial values that were given in form-bean definition. There are no errors in displaying the page.

Another thing to note here is that your login.jsp has no submit button and you are not all submitting the form, so the control never comes inside your action class.

This is the login.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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>Login Form</title>
</head>
<body>
<html:form action="/sendContactForm.do?ContactCd=sendContactForm"
        method="post" styleId="sendContactForm">
        <c:set var="sendContactForm" value="${sendContactForm}" />

        <html:errors />



        <label for="firstname">First Name <span class="asterisk">*</span>
        </label>
        <html:text styleId="firstname" property="firstname"
            styleClass="form-control tip required" name="sendContactForm" />



        <label for="lastname">Last Name <span class="asterisk">*</span>
        </label>
        <html:text styleId="lastname" property="lastname"
            styleClass="form-control tip pplaceholder" name="sendContactForm" />



        <label for="emailaddress">Email Address <span class="asterisk">*</span>
        </label>
        <html:text styleId="emailaddress" property="emailaddress"
            styleClass="form-control tip pplaceholder" name="sendContactForm" />


        <label for="subject">Subject <span class="asterisk">*</span>
        </label>
        <html:text styleId="subject" property="subject"
            styleClass="form-control tip pplaceholder" name="sendContactForm" />

        <label for="comments">Comments <span class="asterisk">*</span>
        </label>
        <html:textarea styleId="comments" property="comments"
            styleClass="form-control tip pplaceholder" name="sendContactForm"></html:textarea>

    </html:form>


</body>
</html>

The jars used are

struts-taglib-1.3.10.jar,struts-core-1.3.10.jar,jstl-1.2.jar,commons-validator-1.3.1.jar, commons-logging-1.0.4.jar,commons-digester-1.8.jar,commons-chain-1.2.jar,commons-beanutils-1.8.0.jar,antlr-2.7.2.jar

The following tld's are put inside my WEB-INF

struts-bean.tld, struts-html.tld,struts-logic.tld

If you have any validation, validation.xml may also be present in WEB-INF

ContactAction.java [in your current case, control does not come here]

public class ContactAction extends Action {

    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest req, HttpServletResponse resp) throws Exception {

        DynaValidatorForm sendContactForm = (DynaValidatorForm) form;
        ActionMessages messages = new ActionMessages();

        String firstName = ((String) sendContactForm.get("firstname"));
        String lastName = ((String) sendContactForm.get("lastname"));
        String emailAddress = ((String) sendContactForm.get("emailaddress"));
        String subject = ((String) sendContactForm.get("subject"));
        String comments = ((String) sendContactForm.get("comments"));
        return mapping.findForward("sendcontacts");
    }
}

Previous edits Usage of sendContactForm.get("firstname") is correct, as you are using DynaValidatorForm .

The error is that your action class is extending the wrong class.

public class ContactAction extends DynaValidatorActionForm

This is wrong. You need to extend the Action class ie:

public class ContactAction extends Action

Also, instead of

DynaValidatorActionForm sendContactForm = (DynaValidatorActionForm) form;

use

DynaValidatorForm sendContactForm = (DynaValidatorForm) form;

Update: In your action class,

what is this method name - sendContactForm ? Is there any reason for this?

public ActionForward sendContactForm 

Why don't you change it to public ActionForward execute

Answer 4

I am not very much used to DynaActionForms , always used ActionForm .

Just out of curiosity, does it work if you change firstname to firstName in form definition and all other places you are referring it?