我正在使用JSF,当我点击一个按钮时,我想在一个新的标签页中打开一个PDF文件。
XHTML
<p:commandButton onclick="this.form.target = '_blank'"
actionListener="#{managedBean.openFile(file)}"
ajax="false" />
Managed bean
public void openFile( File file ) {
FacesContext facesContext = FacesContext.getCurrentInstance();
ExternalContext externalContext = facesContext.getExternalContext();
HttpServletResponse response = (HttpServletResponse) externalContext.getResponse();
BufferedInputStream input = null;
BufferedOutputStream output = null;
try {
// Open file.
input = new BufferedInputStream(new FileInputStream(file), 10240);
// Init servlet response.
response.reset();
// lire un fichier pdf
response.setHeader("Content-type", "application/pdf");
response.setContentLength((int)file.length());
response.setHeader("Content-disposition", "attachment; filename=" + node.getNomRepertoire());
response.setHeader("pragma", "public");
output = new BufferedOutputStream(response.getOutputStream(), 10240);
// Write file contents to response.
byte[] buffer = new byte[10240];
int length;
while ((length = input.read(buffer)) > 0) {
output.write(buffer, 0, length);
}
// Finalize task.
output.flush();
} finally {
// Gently close streams.
output.close();
input.close();
}
}
问题在于我使用这个方法时只下载了文件。供您参考,我正在遵循这篇文章:http://balusc.omnifaces.org/2006/05/pdf-handling.html
onclick="this.form.target = '_blank'"
?! - user6788711this
是否有效,因为PF包装了onclick
。如果有效,请尝试document.getElementById('yourFormId').target = '_blank'
。 - Jasper de Vries