ServletContext 被服务器共享
web应用关闭 tomcat关闭 web应用reload ServletContext被销毁
获取ServletContext对象
ServletContext servletContext = this.getServletContext();
ServletContext servletContext2 = this.getServletConfig().getServletContext();
设置ServletContext对象
servletContext2.setAttribute("name", "aaa");
读取ServletContext对象
Object attribute =servletContext2.getAttribute("name");
删除ServletContext对象
servletContext2.getAttribute("name");
ServletContext对象读取properties文件
db.properties放在webRoot目录下
InputStream inputStream = this.getServletContext().getResourceAsStream("db.properties");
//创建properties
Properties properties = new Properties();
properties.load(inputStream);
properties.getProperty("name");
ServletContext对象imgs下图片路径
String path=this.getServletContext().getRealPath("/imgs/s.jpg");
文件放在src目录
InputStream inputStream=Servlet5.class.getClassLoader().getResourceAsStream("dbinfo.prop");
