BaseServlet的抽取：java.lang.NoSuchMethodException: cn.itcast.travel.web.servlet.UserServlet.add(javax.s

java.lang.NoSuchMethodException: cn.itcast.travel.web.servlet.UserServlet.add(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
BaseServlet的抽取：java.lang.NoSuchMethodException: cn.itcast.travel.web.servlet.UserServlet.add(javax.s

BASEServlet
BaseServlet的抽取：java.lang.NoSuchMethodException: cn.itcast.travel.web.servlet.UserServlet.add(javax.s

UserServlet
BaseServlet的抽取：java.lang.NoSuchMethodException: cn.itcast.travel.web.servlet.UserServlet.add(javax.s

CategoryServlet
BaseServlet的抽取：java.lang.NoSuchMethodException: cn.itcast.travel.web.servlet.UserServlet.add(javax.s

原因分析：
因为方法是被protected，应该忽略访问权限修饰符获取方法，获取方法时应该把获取的反射的方法换成getDeclaredMethod

BaseServlet的抽取：java.lang.NoSuchMethodException: cn.itcast.travel.web.servlet.UserServlet.add(javax.s

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