liferay 在控制层Java中获取当前网页URL后面跟着的参数

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当当前URL为http://xxx/web/guest/newsview? newsId =123时,
在后台需要获取newsId时,只需下面的代码

 
 
HttpServletRequest request = PortalUtil.getHttpServletRequest(renderRequest);
 String articleId = PortalUtil.getOriginalServletRequest(request).getParameter("newsId ");

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