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我试图使用p动态显示primefaces图像:如下graphicImage的标签:流式动态资源出错。使用号码:graphicImage的使用Primefaces
<p:graphicImage value="#{submissionBean.contestImage}">
<f:param name="imageName"
value="#{contestBean.createContest.submissions[0].fileName}" />
</p:graphicImage>`
管理bean如下:
@ManagedProperty("#{param.imageName}")
private String imageName;
public String getImageName()
{
return imageName;
}
public void setImageName(String imageName)
{
this.imageName = imageName;
}
private StreamedContent contestImage;
public StreamedContent getContestImage()
{
FacesContext context = FacesContext.getCurrentInstance();
if (imageName == null)
imageName = Constants.SUBMISSION_FILE_DIR + "/" + "sacxzx_asdsdaas_icon.png";
if (context.getRenderResponse())
{
// So, we're rendering the view. Return a stub StreamedContent so
// that it will generate right URL.
return new DefaultStreamedContent();
}
else
{
return new DefaultStreamedContent(this.getClass().getResourceAsStream(Constants.SUBMISSION_FILE_DIR + "/" + imageName));
}
}
我总是得到“SEVERE:流式动态资源出错”的错误。
检查图像的URL似乎就好了:
http://localhost:8080/mashup/javax.faces.resource/dynamiccontent.xhtml?ln=primefaces&pfdrid=pfdrid_4290aa0c-8eef-45ea-a281-638e460e33bf&imageName=sacxzx_asdsdaas_icon.png
任何想法,这是为什么?
谢谢!
您的托管bean的范围是什么? – wrschneider 2012-08-17 18:55:13
请求作用域。 – Graeme 2012-08-17 20:09:18