Wu Yuxiong--Natural JAVA development JSP-Servlet study notes: use config to obtain JSP parameters

<%-- 
    Document   : configTest2
    Created on : 2020-4-11, 21:49:46
    Author     : Administrator
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content= "text / html; charset = UTF-8" > 
        < title > Test config built-in object </ title > 
    </ head > 
    < body > 
        <!- output the configuration parameter named name of this JSP- > 
        name configuration parameter value: <% = config.getInitParameter ( " name " ) %> < br /> 
        <! - the output of the JSP configuration parameter named age -> 
        age configuration parameter values: <% = config.getInitParameter ( " age " ) %> 
    </ body >
</html>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
                      http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1"
         metadata-complete="true">
    <!-- 配置第一个参数：driver -->
    <context-param>
        <param-name>driver</param-name>
        <param-value>com.mysql.cj.jdbc.Driver </ param-value > 
    </ context-param > 
    <!- Configure the second parameter: url- > 
    < context-param > 
        < param-name > url </ param- name > 
        < param-value > jdbc: mysql: // localhost: 3306 / taobao </ param-value > 
    </ context-param > 
    <!- Configure the third parameter: user- > 
    < context-param > 
        < param-name > user </ param-name > 
        <param-value>root</param-value>
    </context-param>
    <!-- 配置第四个参数：pass -->
    <context-param>
        <param-name>pass</param-name>
        <param-value>admin</param-value>
    </context-param>
    
    <servlet>
        <!-- 指定Servlet名字 -->
        <servlet-name>config</servlet-name>
        <!>--Specify which JSP page is configured as a Servlet-
        < jsp-file > /configTest2.jsp </ jsp-file > 
        <!- Configure the parameter named name, the value is crazyit.org- > 
        < init-param > 
            < param-name > name </ param-name > 
            < param-value > crazyit.org </ param-value > 
        </ init-param > 
        <!- Configure a parameter named age with a value of 30- > 
        < init-param > 
            < param-name > age < / param-name > 
            <param-value>30</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <!-- 指定将config Servlet配置到/config URL-->
        <servlet-name>config</servlet-name>
        <url-pattern>/config</url-pattern>
    </servlet-mapping>
  
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

</web-app>

Wu Yuxiong--Natural JAVA development JSP-Servlet study notes: use config to obtain JSP parameters

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