如何从inputtextarea下载包含内容的xml文件？

Question

I am trying to download a xml file using primefaces components. 我正在尝试使用primefaces组件下载xml文件。 This part is working but I have on my page a inputtextarea, and I would like to have the text that I write in the inputtextarea written in the xml file that is downloaded. 这部分正在工作，但是我的页面上有一个inputtextarea，我希望将在inputtextarea中编写的文本写入下载的xml文件中。 Could a developer help me ? 开发人员可以帮助我吗？ Thank you. 谢谢。

my view : 我的观点：

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:p="http://primefaces.org/ui">


<h:head>
    <title>File Download</title>      
</h:head>
<h:body>
    <p:dialog modal="true" widgetVar="statusDialog" header="Status" draggable="false" closable="false" resizable="false">
        <p:graphicImage value="/images/loading11.gif" />          
    </p:dialog>

    <p:inputTextarea id ="mytheinput"  value="#{fileDownloadView.mytext}" cols="115" autoResize="true" rows="20"  />  

    <h:form>
        <p:commandButton value="Download" ajax="false" onclick="PrimeFaces.monitorDownload(start, stop);" icon="ui-icon-arrowthick-1-s">
            <p:fileDownload value="#{fileDownloadView.file}" />
        </p:commandButton>
    </h:form>

<script type="text/javascript">
function start() {
PF('statusDialog').show();
}

function stop() {
PF('statusDialog').hide();
}
</script>


</h:body>
</html>

My bean : 我的豆：

@ManagedBean(name="fileDownloadView")
public class FileDownloadView {

private StreamedContent file;
private String mytext;

public FileDownloadView() {  
    InputStream stream = ((ServletContext)FacesContext.getCurrentInstance().getExternalContext().getContext()).getResourceAsStream(mytext);
    file = new DefaultStreamedContent(stream, "xml", "yourfile.xml");
}

public StreamedContent getFile() {
    return file;
}

public String getMytext() {
    return mytext;
}

}

Answer 1

Few remarks 几句话

Your p:inputTextarea should be inside the h:form element 您的p:inputTextarea应该位于h:form元素内
Your bean's mytext property must have a getter (ok) AND a setter (missing!) 您的bean的mytext属性必须具有一个getter （确定）和一个setter （丢失！）
Your InputStream code comes from a PF example that returns the content of a resource picture file. 您的InputStream代码来自PF示例，该示例返回资源图片文件的内容。 You just want to create a stream from a string! 您只想从字符串创建流！ Ask yourself How do I turn a String into a Stream in java? 问问自己如何在Java中将字符串转换为流？
The InputStream must be created on the fly because of the changing text (ie inside getFile instead of constructor) 由于文本的更改，必须动态创建InputStream （即在getFile而不是构造函数中）

A little help 一点帮助

public StreamedContent getFile() {
    InputStream stream = new ByteArrayInputStream( mytext.getBytes() );
    StreamedContent file = new DefaultStreamedContent(stream, "xml", "yourfile.xml");
    return file;
}

public String getMytext() {
    return mytext;
}

public void setMytext(String mytext) {
    this.mytext = mytext;
}

如何从inputtextarea下载包含内容的xml文件？

问题描述

1 个解决方案

解决方案1
1 已采纳 2014-11-12 17:47:21

如何从inputtextarea下载包含内容的xml文件？

问题描述

1 个解决方案

解决方案1 1 已采纳 2014-11-12 17:47:21

解决方案1
1 已采纳 2014-11-12 17:47:21