response.sendRedirect("test2.jsp");

window.location.reload("test2.jsp");

location.href("test2.jsp");

Javascript刷新页面的几种方法：
1    history.go(0)
2    window.location.reload()

     window.location.reload(true) 
3    location=location
4    location.assign(location)
5    document.execCommand(‘‘Refresh‘‘)
6    window.navigate(location)
7    location.replace(location)
8    document.URL=location.href

jsp 调用其他jsp页面