public void findPdf() throws IOException{
HttpServletResponse response = ServletActionContext.getResponse();
response.setContentType("application/pdf");
FileInputStream in = new FileInputStream(new File(“c:/測試.pdf”));
OutputStream out = response.getOutputStream();
byte[] b = new byte[512];
while ((in.read(b))!=-1) {
out.write(b);
}
out.flush();
in.close();
out.close();

}

經過測試，火狐和谷歌可以展示，會在整個頁面顯示，會將頁面替換成整個pdf的檢視頁面

所以用function方法開個一個新的視窗

 function finPdf(){
window.open(url, "_blank","top=200,left=200,height=600,width=800,status=yes,toolbar=1, menubar=no,location=no,scrollbars=yes");
}