package www.test.web.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;

@SuppressWarnings("all")

public class BaseServlet extends HttpServlet {

    @Override

    protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        //解决乱码问题

        resp.setContentType("text/html;charset=UTF-8");

        try {

            // 1 获得请求的method方法

            String methodName = req.getParameter("method");

            // 2获得当前被访问的对象的字节码对象

            Class clazz = this.getClass(); //ProductServlet.class --- UserServlet.class

            // 3 获取当前字节码对象中指定的方法

            Method method = clazz.getMethod(methodName,HttpServletRequest.class,HttpServletResponse.class);

            // 4 执行相应的方法

            method.invoke(this,req,resp);

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}