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From Dave Newton <davelnew...@gmail.com>
Subject Re: Clear field error on submit
Date Fri, 27 Jul 2012 13:56:11 GMT
How are you creating your actions? Are you using Spring?

Dave

(pardon brevity, typos, and top-quoting; on cell)
On Jul 27, 2012 9:48 AM, <luca.zoffoli@maggioli.it> wrote:

>
> Hello.
>
> This is a Struts 2 example to show the use of custom result type to
> download file.
>
> I have in jsp :
> - 1 password textfield
> - 1 submit button
>
> If I push submit button without insert a password I correctly obtain a
> field error "Field required!".
> Then If I set "XYZ" password (correct password), I correctly download
> "downloadfile.txt" but
> field error remain.
>
> Why?
>
> Thanks
>
> DownloadAction.java
>
> package com.example.common.action;
>
> import java.io.File;
> import java.io.FileInputStream;
> import java.io.InputStream;
> import com.opensymphony.xwork2.ActionSupport;
>
> public class DownloadAction extends ActionSupport{
>
>         private InputStream fileInputStream;
>         private String password;
>
>         public InputStream getFileInputStream() {
>                 return fileInputStream;
>         }
>
>         public String getPassword() {
>                 return password;
>         }
>
>         public void setPassword(String password) {
>                 this.password = password;
>         }
>
>         public void validate() {
>                 if ( (password==null) || (password.trim().equals("")) ) {
>                         addFieldError("password", "Field required!");
>                 }
>                 if (!password.equals("XYZ") {
>                         addFieldError("password", "Wrong password!");
>                 }
>         }
>
>         public String execute() throws Exception {
>             fileInputStream = new FileInputStream(new File
> ("C:\\downloadfile.txt"));
>             return SUCCESS;
>         }
> }
>
> downloadPage.jsp
>
>
> <%@ taglib prefix="s" uri="/struts-tags" %>
> <html>
>
> <body>
> <h1>Struts 2 download file example</h1>
>         <s:form action="download" method="POST">
>                 <p><s:textfield name="password" /></p>
>                 <p><s:submit id="submitButton"/></p>
>         </s:form>
>
> </body>
> </html>
>
> struts.xml
>
> <?xml version="1.0" encoding="UTF-8" ?>
> <!DOCTYPE struts PUBLIC
> "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
> "http://struts.apache.org/dtds/struts-2.0.dtd">
>
> <struts>
>
> <constant name="struts.devMode" value="true" />
>
> <package name="default" namespace="/" extends="struts-default">
>    <action name="">
>         <result name="success">pages/downloadPage.jsp</result>
>    </action>
>
>    <action name="download"
> class="com.example.common.action.DownloadAction">
>         <interceptor-ref name="defaultStack" />
>         <result name="success" type="stream">
>           <param name="contentType">application/octet-stream</param>
>           <param name="inputName">fileInputStream</param>
>           <param
> name="contentDisposition">attachment;filename="fileABC.txt"</param>
>           <param name="bufferSize">1024</param>
>         </result>
>    </action>
> </package>
>
> </struts>
>
>
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