jsp include两种调用形式详细

include有两种形式,分别是Include指令：和include动作：jsp教程:include page="" flush="true"/>

include调用文件

，是将被引入的JSP与原JSP融合到一起，而这个融合过程是在翻译阶段进行的

index.jsp

Flavors

Our most popular flavors are:

Try them all!

flavor_list.html

1. Chocolate


2. Strawberry


3. Vanilla

常当应用程序中所有的页面的某些部分（例如标题、页脚和导航栏）都相同的时候，我们就可以考虑用include。具体在哪些时候用，哪些时候用。这种形式

include一个页面的地址

Flavors

Our most popular flavors are:

Try them all!

根据用户提交的参数请求，我们调用不用的文件
实例

// Diameter of the earth in kilometers

int distance = 12756;
%>

Diameter of the Earth in SI (Metric) Units

Diameter of the Earth in U.S. Customary Units

ShowDiameter.jsp

String dist = request.getParameter("dist");
if (dist == null)
throw new ServletException
("No distance parameter specified");

int kilometers = Integer.parseInt(dist);
double miles = kilometers / 1.609344;

String units = request.getParameter("units");
if (units == null)
throw new ServletException
("No units parameter specified");

if (units.equals("SI")) {
%> Diameter = km }
else {
%> Diameter = miles }
%>