富文本编辑器

**/
public String uploadFile(){
//获得客户端会调的函数
String callback=ServletActionContext.getRequest().getParameter("CKEditorFuncNum");
try{
String ext=uploadFileName.substring(uploadFileName.lastIndexOf("."));
String newName=UUID.randomUUID().toString().replace("-","")+ext;
//获得服务器上目录的绝对路径
String path=ServletActionContext.getServletContext().getRealPath("/upload");
//创建File对象
File file=new File(path,newName);
//将上传的文件保存到服务器的目录下
FileUtils.copyFile(upload,file);
String uri="upload/"+newName;

   StringBuffer sb=new StringBuffer();
   sb.append("<script type=\"text/javascript\">");
   sb.append("window.parent.CKEDITOR.tools.callFunction("+callback+",‘"+uri+"‘,‘‘);");
   sb.append("</script>");

   //this.inputStream=new ByteArrayInputStream(sb.toString().getBytes());
   ServletActionContext.getResponse().getWriter().write(sb.toString());

}catch(Exception ex){
ex.printStackTrace();
}
return null;
}
}

4.配置处理文件上传的URL