简单的servlet小工具

请求Servlet的时候带一个参数，该参数决定要执行Servlet中的方法（以get方法为例）

@WebServlet("/BaseServlet")
public class BaseServlet extends HttpServlet {
    private static final long serialVersionUID = 1L;
    
    //重写service方法
    @Override
    public void service(HttpServletRequest request, HttpServletResponse response) {
        String param = request.getParameter("method");
        if(param!=null) {
                try {
                Method method = this.getClass().getMethod(param, HttpServletRequest.class,HttpServletResponse.class);
                method.invoke(this, request,response);
                }catch(Exception e) {
                    e.printStackTrace();
                }
        }
    }
    //测试方法
    public void test(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        response.getWriter().write("调用了此方法");
    }

}

测试：

image.png

结果：

image.png