抽取工具类BaseServlet
package cn.itcast.servlet; import java.io.IOException; import java.lang.reflect.Method; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class BaseServlet extends HttpServlet { @Override public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("service....."); //获取客户端提交到服务端的method对应的值 String md=request.getParameter("method"); //定义变量,存放功能执行完毕之后要转发的路径 String path=null; //获取到当前字节码对象(ServletDemo02.class在内存中对象) Class clazz = this.getClass(); try { //获取clazz上名称为md方法 Method method=clazz.getMethod(md, HttpServletRequest.class,HttpServletResponse.class); if(null!=method){ //调用找到的方法 path=(String)method.invoke(this, request,response); } if(null!=path){ //服务端的转发 request.getRequestDispatcher(path).forward(request, response); } } catch (Exception e) { e.printStackTrace(); } } } [点击并拖拽以移动]
