学步园

ServletContext servletContext = (ServletContext)ActionContext.getContext().get(ServletActionContext.SERVLET_CONTEXT);

String rootPath = servletContext.getRealPath("/");

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//方法二：

String rootPath = ServletActionContext.getServletContext().getRealPath("/"); 

自：http://georgeinfo.blog.163.com/blog/static/1636833412011235525318/