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美妆网站开发背景,端州网站建设,中国国际室内设计师网,centos wordpress 优化查看全文#xff1a;https://www.longkui.site/program/java/idea2020servletconfigservletcontext/7055/ 前面文章参考#xff1a;
IDEA(2020版)实现Servlet程序 – 每天进步一点点
IDEA(2020版)实现Servlet的生命周期 – 每天进步一点点
本文主要介绍在IDEA中实现Servle…查看全文https://www.longkui.site/program/java/idea2020servletconfigservletcontext/7055/前面文章参考IDEA(2020版)实现Servlet程序 – 每天进步一点点IDEA(2020版)实现Servlet的生命周期 – 每天进步一点点本文主要介绍在IDEA中实现ServletConfig和ServletContext本文源代码(访问密码: 5382)https://url47.ctfile.com/f/64055047-1501893286-f5ff01?p53821.ServletConfig接口参考第一章代码右击src文件夹New—Create New Servlet名字为TestServlet4_4参考代码如下importjavax.servlet.ServletConfig;importjavax.servlet.ServletException;importjavax.servlet.annotation.WebInitParam;importjavax.servlet.annotation.WebServlet;importjavax.servlet.http.HttpServlet;importjavax.servlet.http.HttpServletRequest;importjavax.servlet.http.HttpServletResponse;importjava.io.IOException;importjava.io.PrintWriter;WebServlet(nameTestServlet4_4,value/test44, initParams{WebInitParam(nameencoding, valueUFT-8),})public class TestServlet4_4 extends HttpServlet{protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException{PrintWriter outresponse.getWriter();// 获得ServletConfig对象 ServletConfig configthis.getServletConfig();// 获得参数名为encoding对应的参数值 String paramconfig.getInitParameter(encoding);out.println(encoding param);}protected void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException{this.doGet(request, response);}}在浏览器中输入http://localhost:8080/Servlet01_war_exploded/test44请注意这个地址并不和课本上一致后面的test44是来自于代码中的value值前面的是Tomcat配置的地址。效果如下2.ServletContext接口当Servlet容器启动时会为每个Web应用创建一个唯一一个ServletContext对象代表当前Web应用。ServletContext对象不仅封装了当前Web应用的所有信息而且实现了多个Servlet之间数据的共享。后续请查看原文https://www.longkui.site/program/java/idea2020servletconfigservletcontext/7055/