JSP取得在WEB.XML中定义的参数_XML/RSS教程-查字典教程网

在WEB.XML文件中设置参数:

<?xmlversion="1.0"encoding="ISO-8859-1"?>

<!DOCTYPEweb-appPUBLIC"-//SunMicrosystems,Inc.//DTDWebApplication2.3//EN""http://java.sun.com/dtd/web-app_2_3.dtd">

<web-app>

<servlet-name>myjsp</servlet-name>

<jsp-file>/MyJsp.jsp</jsp-file>

<init-param>

<param-name>firstparam</param-name>

<param-value>firstparamvalue</param-value>

</init-param>

</servlet>

<servlet-mapping>

<servlet-name>myjsp</servlet-name>

<url-pattern>/myurl/*</url-pattern>

</servlet-mapping>

</web-app>

下面的程序无法取出在WEB.XML中定义的参数firstparam的值firstparamvalue

<html>

<HEAD><TITLE>myjsppage.jsp</TITLE></HEAD>

Myinitparameteris<%=application.getInitParameter("firstparam")%>

</html>

下面的程序就可以取出在WEB.XML中定义的参数firstparam的值firstparamvalue

StringStr1;

Str1=config.getInitParameter("firstparam");

Out.println(Str1);

因为config是类javax.servlet.ServletConfig的对象,而application是类javax.servlet.ServletContext的对象.

如果指定WebLogicSERVER的侦听端口为80，那么在IE中就不用输入端口

http://hostname/myfile.html取代http://hostname:portnumber/myfile.html.