Servlet利用反射动态调用方法-蒲公英云

Servlet利用反射动态调用方法

亦凉 2023-06-02 10:38 99阅读 0赞

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
        //请求编码
        request.setCharacterEncoding("utf-8");
        //响应编码
        response.setContentType("text/html;charset=utf-8");
        //获取参数
        String method = request.getParameter("method");
         //利用反射动态调用方法
        try { 
            //获取一个类对象
            Class<?> clazz = Class.forName("Servlet.Servletcomplex");
            //获取当前类public、protected和private修饰的方法
            Method me = clazz.getDeclaredMethod(method, HttpServletRequest.class, HttpServletResponse.class);
            //修改java安全检查权限
            me.setAccessible(true);
            //执行方法
            me.invoke(clazz.newInstance(),request,response);
        } catch (ClassNotFoundException e) { 
            e.printStackTrace();
        } catch (NoSuchMethodException e) { 
            e.printStackTrace();
        } catch (IllegalAccessException e) { 
            e.printStackTrace();
        } catch (InstantiationException e) { 
            e.printStackTrace();
        } catch (InvocationTargetException e) { 
            e.printStackTrace();
        }
    }